* [PATCH V6 0/2] Virtio support for toolstack on Arm (Was "IOREQ feature (+ virtio-mmio) on Arm")
@ 2021-12-08 16:59 Oleksandr Tyshchenko
2021-12-08 16:59 ` [PATCH V6 1/2] libxl: Add support for Virtio disk configuration Oleksandr Tyshchenko
2021-12-08 16:59 ` [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm Oleksandr Tyshchenko
0 siblings, 2 replies; 20+ messages in thread
From: Oleksandr Tyshchenko @ 2021-12-08 16:59 UTC (permalink / raw)
To: xen-devel
Cc: Oleksandr Tyshchenko, Wei Liu, George Dunlap, Nick Rosbrook,
Anthony PERARD, Juergen Gross, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis, Wei Chen, Kaly Xin,
Jiamei Xie, Henry Wang, Alex Bennée
From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Hello all.
The purpose of this patch series is to add missing virtio-mmio bits to Xen toolstack on Arm.
The Virtio support for toolstack [1] was postponed as the main target was to upstream IOREQ/DM
support on Arm in the first place. Now, we already have IOREQ support in, so we can resume Virtio
enabling work. You can find previous discussions at [2].
Patch series [3] is based on recent "staging branch"
(608531a0cc34a5bc096ccf585e16f182b5ed83e1 MAINTAINERS: Resign from my maintainership roles)
and tested on Renesas Salvator-X board + H3 ES3.0 SoC (Arm64) with virtio-mmio disk backend [4]
running in Driver domain and unmodified Linux Guest running on existing virtio-blk driver (frontend).
No issues were observed. Guest domain 'reboot/destroy' use-cases work properly.
Any feedback/help would be highly appreciated.
[1]
https://lore.kernel.org/xen-devel/1610488352-18494-24-git-send-email-olekstysh@gmail.com/
https://lore.kernel.org/xen-devel/1610488352-18494-25-git-send-email-olekstysh@gmail.com/
[2]
https://lists.xenproject.org/archives/html/xen-devel/2021-01/msg02403.html
https://lists.xenproject.org/archives/html/xen-devel/2021-01/msg02536.html
https://lore.kernel.org/xen-devel/1621626361-29076-1-git-send-email-olekstysh@gmail.com/
[3] https://github.com/otyshchenko1/xen/commits/libxl_virtio1
[4] https://github.com/xen-troops/virtio-disk/commits/ioreq_ml3
Julien Grall (1):
libxl: Introduce basic virtio-mmio support on Arm
Oleksandr Tyshchenko (1):
libxl: Add support for Virtio disk configuration
docs/man/xl-disk-configuration.5.pod.in | 27 +
tools/golang/xenlight/helpers.gen.go | 6 +
tools/golang/xenlight/types.gen.go | 4 +
tools/include/libxl.h | 6 +
tools/libs/light/libxl_arm.c | 131 ++++-
tools/libs/light/libxl_device.c | 38 +-
tools/libs/light/libxl_disk.c | 99 +++-
tools/libs/light/libxl_types.idl | 4 +
tools/libs/light/libxl_types_internal.idl | 1 +
tools/libs/light/libxl_utils.c | 2 +
tools/libs/util/libxlu_disk_l.c | 881 +++++++++++++++---------------
tools/libs/util/libxlu_disk_l.h | 2 +-
tools/libs/util/libxlu_disk_l.l | 1 +
tools/xl/xl_block.c | 11 +
xen/include/public/arch-arm.h | 7 +
15 files changed, 772 insertions(+), 448 deletions(-)
--
2.7.4
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-08 16:59 [PATCH V6 0/2] Virtio support for toolstack on Arm (Was "IOREQ feature (+ virtio-mmio) on Arm") Oleksandr Tyshchenko
@ 2021-12-08 16:59 ` Oleksandr Tyshchenko
2021-12-09 6:50 ` Jiamei Xie
2021-12-14 16:03 ` Anthony PERARD
2021-12-08 16:59 ` [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm Oleksandr Tyshchenko
1 sibling, 2 replies; 20+ messages in thread
From: Oleksandr Tyshchenko @ 2021-12-08 16:59 UTC (permalink / raw)
To: xen-devel
Cc: Oleksandr Tyshchenko, Wei Liu, George Dunlap, Nick Rosbrook,
Anthony PERARD, Juergen Gross, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
This patch adds basic support for configuring and assisting virtio-disk
backend (emualator) which is intended to run out of Qemu and could be
run in any domain.
Although the Virtio block device is quite different from traditional
Xen PV block device (vbd) from the toolstack point of view:
- as the frontend is virtio-blk which is not a Xenbus driver, nothing
written to Xenstore are fetched by the frontend (the vdev is not
passed to the frontend)
- the ring-ref/event-channel are not used for the backend<->frontend
communication, the proposed IPC for Virtio is IOREQ/DM
it is still a "block device" and ought to be integrated in existing
"disk" handling. So, re-use (and adapt) "disk" parsing/configuration
logic to deal with Virtio devices as well.
Besides introducing new disk backend type (LIBXL_DISK_BACKEND_VIRTIO)
introduce new device kind (LIBXL__DEVICE_KIND_VIRTIO_DISK) as current
one (LIBXL__DEVICE_KIND_VBD) doesn't fit into Virtio disk model.
In order to inform the toolstack that Virtio disk needs to be used
extend "disk" configuration by introducing new "virtio" flag.
An example of domain configuration:
disk = [ 'backend=DomD, phy:/dev/mmcblk1p3, xvda1, rw, virtio' ]
Please note, this patch is not enough for virtio-disk to work
on Xen (Arm), as for every Virtio device (including disk) we need
to allocate Virtio MMIO params (IRQ and memory region) and pass
them to the backend, also update Guest device-tree. The subsequent
patch will add these missing bits. For the current patch,
the default "irq" and "base" are just written to the Xenstore.
Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
---
Changes RFC -> V1:
- no changes
Changes V1 -> V2:
- rebase according to the new location of libxl_virtio_disk.c
Changes V2 -> V3:
- no changes
Changes V3 -> V4:
- rebase according to the new argument for DEFINE_DEVICE_TYPE_STRUCT
Changes V4 -> V5:
- split the changes, change the order of the patches
- update patch description
- don't introduce new "vdisk" configuration option with own parsing logic,
re-use Xen PV block "disk" parsing/configuration logic for the virtio-disk
- introduce "virtio" flag and document it's usage
- add LIBXL_HAVE_DEVICE_DISK_VIRTIO
- update libxlu_disk_l.[ch]
- drop num_disks variable/MAX_VIRTIO_DISKS
- drop Wei's T-b
Changes V5 -> V6:
- rebase on current staging
- use "%"PRIu64 instead of %lu for disk->base in device_disk_add()
- update *.gen.go files
---
docs/man/xl-disk-configuration.5.pod.in | 27 +
tools/golang/xenlight/helpers.gen.go | 6 +
tools/golang/xenlight/types.gen.go | 4 +
tools/include/libxl.h | 6 +
tools/libs/light/libxl_device.c | 38 +-
tools/libs/light/libxl_disk.c | 99 +++-
tools/libs/light/libxl_types.idl | 4 +
tools/libs/light/libxl_types_internal.idl | 1 +
tools/libs/light/libxl_utils.c | 2 +
tools/libs/util/libxlu_disk_l.c | 881 +++++++++++++++---------------
tools/libs/util/libxlu_disk_l.h | 2 +-
tools/libs/util/libxlu_disk_l.l | 1 +
tools/xl/xl_block.c | 11 +
13 files changed, 636 insertions(+), 446 deletions(-)
diff --git a/docs/man/xl-disk-configuration.5.pod.in b/docs/man/xl-disk-configuration.5.pod.in
index 71d0e86..9cc189f 100644
--- a/docs/man/xl-disk-configuration.5.pod.in
+++ b/docs/man/xl-disk-configuration.5.pod.in
@@ -344,8 +344,35 @@ can be used to disable "hole punching" for file based backends which
were intentionally created non-sparse to avoid fragmentation of the
file.
+=item B<virtio>
+
+=over 4
+
+=item Description
+
+Enables experimental Virtio support for disk
+
+=item Supported values
+
+absent, present
+
+=item Mandatory
+
+No
+
+=item Default value
+
+absent
+
=back
+Besides forcing toolstack to use specific Xen Virtio backend implementation
+(for example, virtio-disk), this also affects the guest's view of the device
+and requires virtio-blk driver to be used.
+Please note, the virtual device (vdev) is not passed to the guest in that case,
+but it still must be specified for the internal purposes.
+
+=back
=head1 COLO Parameters
diff --git a/tools/golang/xenlight/helpers.gen.go b/tools/golang/xenlight/helpers.gen.go
index b746ff1..787e3ba 100644
--- a/tools/golang/xenlight/helpers.gen.go
+++ b/tools/golang/xenlight/helpers.gen.go
@@ -1751,6 +1751,9 @@ x.DirectIoSafe = bool(xc.direct_io_safe)
if err := x.DiscardEnable.fromC(&xc.discard_enable);err != nil {
return fmt.Errorf("converting field DiscardEnable: %v", err)
}
+x.Virtio = bool(xc.virtio)
+x.Irq = uint32(xc.irq)
+x.Base = uint64(xc.base)
if err := x.ColoEnable.fromC(&xc.colo_enable);err != nil {
return fmt.Errorf("converting field ColoEnable: %v", err)
}
@@ -1788,6 +1791,9 @@ xc.direct_io_safe = C.bool(x.DirectIoSafe)
if err := x.DiscardEnable.toC(&xc.discard_enable); err != nil {
return fmt.Errorf("converting field DiscardEnable: %v", err)
}
+xc.virtio = C.bool(x.Virtio)
+xc.irq = C.uint32_t(x.Irq)
+xc.base = C.uint64_t(x.Base)
if err := x.ColoEnable.toC(&xc.colo_enable); err != nil {
return fmt.Errorf("converting field ColoEnable: %v", err)
}
diff --git a/tools/golang/xenlight/types.gen.go b/tools/golang/xenlight/types.gen.go
index b1e84d5..1d6868a 100644
--- a/tools/golang/xenlight/types.gen.go
+++ b/tools/golang/xenlight/types.gen.go
@@ -99,6 +99,7 @@ DiskBackendUnknown DiskBackend = 0
DiskBackendPhy DiskBackend = 1
DiskBackendTap DiskBackend = 2
DiskBackendQdisk DiskBackend = 3
+DiskBackendVirtio DiskBackend = 4
)
type NicType int
@@ -643,6 +644,9 @@ Readwrite int
IsCdrom int
DirectIoSafe bool
DiscardEnable Defbool
+Virtio bool
+Irq uint32
+Base uint64
ColoEnable Defbool
ColoRestoreEnable Defbool
ColoHost string
diff --git a/tools/include/libxl.h b/tools/include/libxl.h
index 2bbbd21..1ea7475 100644
--- a/tools/include/libxl.h
+++ b/tools/include/libxl.h
@@ -528,6 +528,12 @@
#define LIBXL_HAVE_MAX_GRANT_VERSION 1
/*
+ * LIBXL_HAVE_DEVICE_DISK_VIRTIO indicates that a 'virtio' field
+ * (of boolean type) is present in libxl_device_disk.
+ */
+#define LIBXL_HAVE_DEVICE_DISK_VIRTIO 1
+
+/*
* libxl ABI compatibility
*
* The only guarantee which libxl makes regarding ABI compatibility
diff --git a/tools/libs/light/libxl_device.c b/tools/libs/light/libxl_device.c
index 36c4e41..7c8cb53 100644
--- a/tools/libs/light/libxl_device.c
+++ b/tools/libs/light/libxl_device.c
@@ -292,6 +292,9 @@ static int disk_try_backend(disk_try_backend_args *a,
/* returns 0 (ie, DISK_BACKEND_UNKNOWN) on failure, or
* backend on success */
+ if (a->disk->virtio && backend != LIBXL_DISK_BACKEND_VIRTIO)
+ goto bad_virtio;
+
switch (backend) {
case LIBXL_DISK_BACKEND_PHY:
if (a->disk->format != LIBXL_DISK_FORMAT_RAW) {
@@ -329,6 +332,29 @@ static int disk_try_backend(disk_try_backend_args *a,
if (a->disk->script) goto bad_script;
return backend;
+ case LIBXL_DISK_BACKEND_VIRTIO:
+ if (a->disk->format != LIBXL_DISK_FORMAT_RAW)
+ goto bad_format;
+
+ if (a->disk->script)
+ goto bad_script;
+
+ if (libxl_defbool_val(a->disk->colo_enable))
+ goto bad_colo;
+
+ if (a->disk->backend_domid != LIBXL_TOOLSTACK_DOMID) {
+ LOG(DEBUG, "Disk vdev=%s, is using a storage driver domain, "
+ "skipping physical device check", a->disk->vdev);
+ return backend;
+ }
+
+ if (libxl__try_phy_backend(a->stab.st_mode))
+ return backend;
+
+ LOG(DEBUG, "Disk vdev=%s, backend virtio unsuitable as phys path not a "
+ "block device", a->disk->vdev);
+ return 0;
+
default:
LOG(DEBUG, "Disk vdev=%s, backend %d unknown", a->disk->vdev, backend);
return 0;
@@ -352,6 +378,11 @@ static int disk_try_backend(disk_try_backend_args *a,
LOG(DEBUG, "Disk vdev=%s, backend %s not compatible with colo",
a->disk->vdev, libxl_disk_backend_to_string(backend));
return 0;
+
+ bad_virtio:
+ LOG(DEBUG, "Disk vdev=%s, backend %s not compatible with virtio",
+ a->disk->vdev, libxl_disk_backend_to_string(backend));
+ return 0;
}
int libxl__backendpath_parse_domid(libxl__gc *gc, const char *be_path,
@@ -392,7 +423,8 @@ int libxl__device_disk_set_backend(libxl__gc *gc, libxl_device_disk *disk) {
}
memset(&a.stab, 0, sizeof(a.stab));
} else if ((disk->backend == LIBXL_DISK_BACKEND_UNKNOWN ||
- disk->backend == LIBXL_DISK_BACKEND_PHY) &&
+ disk->backend == LIBXL_DISK_BACKEND_PHY ||
+ disk->backend == LIBXL_DISK_BACKEND_VIRTIO) &&
disk->backend_domid == LIBXL_TOOLSTACK_DOMID &&
!disk->script) {
if (stat(disk->pdev_path, &a.stab)) {
@@ -408,7 +440,8 @@ int libxl__device_disk_set_backend(libxl__gc *gc, libxl_device_disk *disk) {
ok=
disk_try_backend(&a, LIBXL_DISK_BACKEND_PHY) ?:
disk_try_backend(&a, LIBXL_DISK_BACKEND_QDISK) ?:
- disk_try_backend(&a, LIBXL_DISK_BACKEND_TAP);
+ disk_try_backend(&a, LIBXL_DISK_BACKEND_TAP) ?:
+ disk_try_backend(&a, LIBXL_DISK_BACKEND_VIRTIO);
if (ok)
LOG(DEBUG, "Disk vdev=%s, using backend %s",
disk->vdev,
@@ -441,6 +474,7 @@ char *libxl__device_disk_string_of_backend(libxl_disk_backend backend)
case LIBXL_DISK_BACKEND_QDISK: return "qdisk";
case LIBXL_DISK_BACKEND_TAP: return "phy";
case LIBXL_DISK_BACKEND_PHY: return "phy";
+ case LIBXL_DISK_BACKEND_VIRTIO: return "virtio_disk";
default: return NULL;
}
}
diff --git a/tools/libs/light/libxl_disk.c b/tools/libs/light/libxl_disk.c
index 93936d0..912b3f5 100644
--- a/tools/libs/light/libxl_disk.c
+++ b/tools/libs/light/libxl_disk.c
@@ -174,6 +174,16 @@ static int libxl__device_disk_setdefault(libxl__gc *gc, uint32_t domid,
disk->backend = LIBXL_DISK_BACKEND_QDISK;
}
+ /* Force virtio_disk backend for Virtio devices */
+ if (disk->virtio) {
+ if (!(disk->backend == LIBXL_DISK_BACKEND_VIRTIO ||
+ disk->backend == LIBXL_DISK_BACKEND_UNKNOWN)) {
+ LOGD(ERROR, domid, "Backend for Virtio devices on must be virtio_disk");
+ return ERROR_FAIL;
+ }
+ disk->backend = LIBXL_DISK_BACKEND_VIRTIO;
+ }
+
rc = libxl__device_disk_set_backend(gc, disk);
return rc;
}
@@ -204,6 +214,9 @@ static int libxl__device_from_disk(libxl__gc *gc, uint32_t domid,
case LIBXL_DISK_BACKEND_QDISK:
device->backend_kind = LIBXL__DEVICE_KIND_QDISK;
break;
+ case LIBXL_DISK_BACKEND_VIRTIO:
+ device->backend_kind = LIBXL__DEVICE_KIND_VIRTIO_DISK;
+ break;
default:
LOGD(ERROR, domid, "Unrecognized disk backend type: %d",
disk->backend);
@@ -212,7 +225,8 @@ static int libxl__device_from_disk(libxl__gc *gc, uint32_t domid,
device->domid = domid;
device->devid = devid;
- device->kind = LIBXL__DEVICE_KIND_VBD;
+ device->kind = disk->backend == LIBXL_DISK_BACKEND_VIRTIO ?
+ LIBXL__DEVICE_KIND_VIRTIO_DISK : LIBXL__DEVICE_KIND_VBD;
return 0;
}
@@ -330,7 +344,17 @@ static void device_disk_add(libxl__egc *egc, uint32_t domid,
assert(device->backend_kind == LIBXL__DEVICE_KIND_VBD);
break;
+ case LIBXL_DISK_BACKEND_VIRTIO:
+ dev = disk->pdev_path;
+
+ flexarray_append(back, "params");
+ flexarray_append(back, dev);
+ flexarray_append_pair(back, "base", GCSPRINTF("%"PRIu64, disk->base));
+ flexarray_append_pair(back, "irq", GCSPRINTF("%u", disk->irq));
+
+ assert(device->backend_kind == LIBXL__DEVICE_KIND_VIRTIO_DISK);
+ break;
case LIBXL_DISK_BACKEND_TAP:
LOG(ERROR, "blktap is not supported");
rc = ERROR_FAIL;
@@ -532,6 +556,26 @@ static int libxl__disk_from_xenstore(libxl__gc *gc, const char *libxl_path,
}
libxl_string_to_backend(ctx, tmp, &(disk->backend));
+ if (disk->backend == LIBXL_DISK_BACKEND_VIRTIO) {
+ disk->virtio = true;
+
+ tmp = libxl__xs_read(gc, XBT_NULL,
+ GCSPRINTF("%s/base", libxl_path));
+ if (!tmp) {
+ LOG(ERROR, "Missing xenstore node %s/base", libxl_path);
+ goto cleanup;
+ }
+ disk->base = strtoul(tmp, NULL, 10);
+
+ tmp = libxl__xs_read(gc, XBT_NULL,
+ GCSPRINTF("%s/irq", libxl_path));
+ if (!tmp) {
+ LOG(ERROR, "Missing xenstore node %s/irq", libxl_path);
+ goto cleanup;
+ }
+ disk->irq = strtoul(tmp, NULL, 10);
+ }
+
disk->vdev = xs_read(ctx->xsh, XBT_NULL,
GCSPRINTF("%s/dev", libxl_path), &len);
if (!disk->vdev) {
@@ -575,6 +619,41 @@ cleanup:
return rc;
}
+static int libxl_device_disk_get_path(libxl__gc *gc, uint32_t domid,
+ char **path)
+{
+ const char *dir;
+ int rc;
+
+ /*
+ * As we don't know exactly what device kind to be used here, guess it
+ * by checking the presence of the corresponding path in Xenstore.
+ * First, try to read path for vbd device (default) and if not exists
+ * read path for virtio_disk device. This will work as long as both Xen PV
+ * and Virtio disk devices are not assigned to the same guest.
+ */
+ *path = GCSPRINTF("%s/device/%s",
+ libxl__xs_libxl_path(gc, domid),
+ libxl__device_kind_to_string(LIBXL__DEVICE_KIND_VBD));
+
+ rc = libxl__xs_read_checked(gc, XBT_NULL, *path, &dir);
+ if (rc)
+ return rc;
+
+ if (dir)
+ return 0;
+
+ *path = GCSPRINTF("%s/device/%s",
+ libxl__xs_libxl_path(gc, domid),
+ libxl__device_kind_to_string(LIBXL__DEVICE_KIND_VIRTIO_DISK));
+
+ rc = libxl__xs_read_checked(gc, XBT_NULL, *path, &dir);
+ if (rc)
+ return rc;
+
+ return 0;
+}
+
int libxl_vdev_to_device_disk(libxl_ctx *ctx, uint32_t domid,
const char *vdev, libxl_device_disk *disk)
{
@@ -588,10 +667,12 @@ int libxl_vdev_to_device_disk(libxl_ctx *ctx, uint32_t domid,
libxl_device_disk_init(disk);
- libxl_path = libxl__domain_device_libxl_path(gc, domid, devid,
- LIBXL__DEVICE_KIND_VBD);
+ rc = libxl_device_disk_get_path(gc, domid, &libxl_path);
+ if (rc)
+ return rc;
- rc = libxl__disk_from_xenstore(gc, libxl_path, devid, disk);
+ rc = libxl__disk_from_xenstore(gc, GCSPRINTF("%s/%d", libxl_path, devid),
+ devid, disk);
GC_FREE;
return rc;
@@ -605,16 +686,19 @@ int libxl_device_disk_getinfo(libxl_ctx *ctx, uint32_t domid,
char *fe_path, *libxl_path;
char *val;
int rc;
+ libxl__device_kind kind;
diskinfo->backend = NULL;
diskinfo->devid = libxl__device_disk_dev_number(disk->vdev, NULL, NULL);
- /* tap devices entries in xenstore are written as vbd devices. */
+ /* tap devices entries in xenstore are written as vbd/virtio_disk devices. */
+ kind = disk->backend == LIBXL_DISK_BACKEND_VIRTIO ?
+ LIBXL__DEVICE_KIND_VIRTIO_DISK : LIBXL__DEVICE_KIND_VBD;
fe_path = libxl__domain_device_frontend_path(gc, domid, diskinfo->devid,
- LIBXL__DEVICE_KIND_VBD);
+ kind);
libxl_path = libxl__domain_device_libxl_path(gc, domid, diskinfo->devid,
- LIBXL__DEVICE_KIND_VBD);
+ kind);
diskinfo->backend = xs_read(ctx->xsh, XBT_NULL,
GCSPRINTF("%s/backend", libxl_path), NULL);
if (!diskinfo->backend) {
@@ -1418,6 +1502,7 @@ LIBXL_DEFINE_DEVICE_LIST(disk)
#define libxl__device_disk_update_devid NULL
DEFINE_DEVICE_TYPE_STRUCT(disk, VBD, disks,
+ .get_path = libxl_device_disk_get_path,
.merge = libxl_device_disk_merge,
.dm_needed = libxl_device_disk_dm_needed,
.from_xenstore = (device_from_xenstore_fn_t)libxl__disk_from_xenstore,
diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_types.idl
index 2a42da2..31e4a15 100644
--- a/tools/libs/light/libxl_types.idl
+++ b/tools/libs/light/libxl_types.idl
@@ -130,6 +130,7 @@ libxl_disk_backend = Enumeration("disk_backend", [
(1, "PHY"),
(2, "TAP"),
(3, "QDISK"),
+ (4, "VIRTIO"),
])
libxl_nic_type = Enumeration("nic_type", [
@@ -704,6 +705,9 @@ libxl_device_disk = Struct("device_disk", [
("is_cdrom", integer),
("direct_io_safe", bool),
("discard_enable", libxl_defbool),
+ ("virtio", bool),
+ ("irq", uint32),
+ ("base", uint64),
# Note that the COLO configuration settings should be considered unstable.
# They may change incompatibly in future versions of Xen.
("colo_enable", libxl_defbool),
diff --git a/tools/libs/light/libxl_types_internal.idl b/tools/libs/light/libxl_types_internal.idl
index 3593e21..8f71980 100644
--- a/tools/libs/light/libxl_types_internal.idl
+++ b/tools/libs/light/libxl_types_internal.idl
@@ -32,6 +32,7 @@ libxl__device_kind = Enumeration("device_kind", [
(14, "PVCALLS"),
(15, "VSND"),
(16, "VINPUT"),
+ (17, "VIRTIO_DISK"),
])
libxl__console_backend = Enumeration("console_backend", [
diff --git a/tools/libs/light/libxl_utils.c b/tools/libs/light/libxl_utils.c
index 4699c4a..fa406de 100644
--- a/tools/libs/light/libxl_utils.c
+++ b/tools/libs/light/libxl_utils.c
@@ -304,6 +304,8 @@ int libxl_string_to_backend(libxl_ctx *ctx, char *s, libxl_disk_backend *backend
*backend = LIBXL_DISK_BACKEND_TAP;
} else if (!strcmp(s, "qdisk")) {
*backend = LIBXL_DISK_BACKEND_QDISK;
+ } else if (!strcmp(s, "virtio_disk")) {
+ *backend = LIBXL_DISK_BACKEND_VIRTIO;
} else if (!strcmp(s, "tap")) {
p = strchr(s, ':');
if (!p) {
diff --git a/tools/libs/util/libxlu_disk_l.c b/tools/libs/util/libxlu_disk_l.c
index 32d4b74..7abc699 100644
--- a/tools/libs/util/libxlu_disk_l.c
+++ b/tools/libs/util/libxlu_disk_l.c
@@ -549,8 +549,8 @@ static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner );
yyg->yy_hold_char = *yy_cp; \
*yy_cp = '\0'; \
yyg->yy_c_buf_p = yy_cp;
-#define YY_NUM_RULES 36
-#define YY_END_OF_BUFFER 37
+#define YY_NUM_RULES 37
+#define YY_END_OF_BUFFER 38
/* This struct is not used in this scanner,
but its presence is necessary. */
struct yy_trans_info
@@ -558,74 +558,75 @@ struct yy_trans_info
flex_int32_t yy_verify;
flex_int32_t yy_nxt;
};
-static const flex_int16_t yy_acclist[575] =
+static const flex_int16_t yy_acclist[583] =
{ 0,
- 35, 35, 37, 33, 34, 36, 8193, 33, 34, 36,
- 16385, 8193, 33, 36,16385, 33, 34, 36, 34, 36,
- 33, 34, 36, 33, 34, 36, 33, 34, 36, 33,
- 34, 36, 33, 34, 36, 33, 34, 36, 33, 34,
- 36, 33, 34, 36, 33, 34, 36, 33, 34, 36,
- 33, 34, 36, 33, 34, 36, 33, 34, 36, 33,
- 34, 36, 33, 34, 36, 33, 34, 36, 35, 36,
- 36, 33, 33, 8193, 33, 8193, 33,16385, 8193, 33,
- 8193, 33, 33, 8224, 33,16416, 33, 33, 33, 33,
- 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
-
- 33, 33, 33, 33, 33, 33, 33, 33, 33, 35,
- 8193, 33, 8193, 33, 8193, 8224, 33, 8224, 33, 8224,
- 23, 33, 33, 33, 33, 33, 33, 33, 33, 33,
- 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
- 33, 33, 33, 33, 33, 8224, 33, 8224, 33, 8224,
- 23, 33, 33, 28, 8224, 33,16416, 33, 33, 15,
- 33, 33, 33, 33, 33, 33, 33, 33, 33, 8217,
- 8224, 33,16409,16416, 33, 33, 31, 8224, 33,16416,
- 33, 8216, 8224, 33,16408,16416, 33, 33, 8219, 8224,
- 33,16411,16416, 33, 33, 33, 33, 33, 28, 8224,
-
- 33, 28, 8224, 33, 28, 33, 28, 8224, 33, 3,
- 33, 15, 33, 33, 33, 33, 33, 30, 8224, 33,
- 16416, 33, 33, 33, 8217, 8224, 33, 8217, 8224, 33,
- 8217, 33, 8217, 8224, 33, 33, 31, 8224, 33, 31,
- 8224, 33, 31, 33, 31, 8224, 8216, 8224, 33, 8216,
- 8224, 33, 8216, 33, 8216, 8224, 33, 8219, 8224, 33,
- 8219, 8224, 33, 8219, 33, 8219, 8224, 33, 33, 10,
- 33, 33, 28, 8224, 33, 28, 8224, 33, 28, 8224,
- 28, 33, 28, 33, 3, 33, 33, 33, 33, 33,
- 33, 33, 30, 8224, 33, 30, 8224, 33, 30, 33,
-
- 30, 8224, 33, 33, 29, 8224, 33,16416, 8217, 8224,
- 33, 8217, 8224, 33, 8217, 8224, 8217, 33, 8217, 33,
- 33, 31, 8224, 33, 31, 8224, 33, 31, 8224, 31,
- 33, 31, 8216, 8224, 33, 8216, 8224, 33, 8216, 8224,
- 8216, 33, 8216, 33, 8219, 8224, 33, 8219, 8224, 33,
- 8219, 8224, 8219, 33, 8219, 33, 33, 10, 23, 10,
- 7, 33, 33, 33, 33, 33, 33, 33, 13, 33,
- 30, 8224, 33, 30, 8224, 33, 30, 8224, 30, 33,
- 30, 2, 33, 29, 8224, 33, 29, 8224, 33, 29,
- 33, 29, 8224, 16, 33, 33, 11, 33, 22, 10,
-
- 10, 23, 7, 23, 7, 33, 8, 33, 33, 33,
- 33, 6, 33, 13, 33, 2, 23, 2, 33, 29,
- 8224, 33, 29, 8224, 33, 29, 8224, 29, 33, 29,
- 16, 33, 33, 11, 23, 11, 26, 8224, 33,16416,
- 22, 23, 22, 7, 7, 23, 33, 8, 23, 8,
- 33, 33, 33, 33, 6, 23, 6, 6, 23, 6,
- 23, 33, 2, 2, 23, 33, 33, 11, 11, 23,
- 26, 8224, 33, 26, 8224, 33, 26, 33, 26, 8224,
- 22, 23, 33, 8, 8, 23, 33, 33, 17, 18,
- 6, 6, 23, 6, 6, 33, 33, 14, 33, 26,
-
- 8224, 33, 26, 8224, 33, 26, 8224, 26, 33, 26,
- 33, 33, 33, 17, 23, 17, 18, 23, 18, 6,
- 6, 33, 33, 14, 33, 20, 9, 19, 17, 17,
- 23, 18, 18, 23, 6, 5, 6, 33, 21, 20,
- 23, 20, 9, 23, 9, 19, 23, 19, 4, 6,
- 5, 6, 33, 21, 23, 21, 20, 20, 23, 9,
- 9, 23, 19, 19, 23, 4, 6, 12, 33, 21,
- 21, 23, 12, 33
+ 36, 36, 38, 34, 35, 37, 8193, 34, 35, 37,
+ 16385, 8193, 34, 37,16385, 34, 35, 37, 35, 37,
+ 34, 35, 37, 34, 35, 37, 34, 35, 37, 34,
+ 35, 37, 34, 35, 37, 34, 35, 37, 34, 35,
+ 37, 34, 35, 37, 34, 35, 37, 34, 35, 37,
+ 34, 35, 37, 34, 35, 37, 34, 35, 37, 34,
+ 35, 37, 34, 35, 37, 34, 35, 37, 36, 37,
+ 37, 34, 34, 8193, 34, 8193, 34,16385, 8193, 34,
+ 8193, 34, 34, 8225, 34,16417, 34, 34, 34, 34,
+ 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+
+ 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+ 36, 8193, 34, 8193, 34, 8193, 8225, 34, 8225, 34,
+ 8225, 24, 34, 34, 34, 34, 34, 34, 34, 34,
+ 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+ 34, 34, 34, 34, 34, 34, 34, 8225, 34, 8225,
+ 34, 8225, 24, 34, 34, 29, 8225, 34,16417, 34,
+ 34, 16, 34, 34, 34, 34, 34, 34, 34, 34,
+ 34, 8218, 8225, 34,16410,16417, 34, 34, 32, 8225,
+ 34,16417, 34, 8217, 8225, 34,16409,16417, 34, 34,
+ 8220, 8225, 34,16412,16417, 34, 34, 34, 34, 34,
+
+ 34, 29, 8225, 34, 29, 8225, 34, 29, 34, 29,
+ 8225, 34, 3, 34, 16, 34, 34, 34, 34, 34,
+ 31, 8225, 34,16417, 34, 34, 34, 8218, 8225, 34,
+ 8218, 8225, 34, 8218, 34, 8218, 8225, 34, 34, 32,
+ 8225, 34, 32, 8225, 34, 32, 34, 32, 8225, 8217,
+ 8225, 34, 8217, 8225, 34, 8217, 34, 8217, 8225, 34,
+ 8220, 8225, 34, 8220, 8225, 34, 8220, 34, 8220, 8225,
+ 34, 34, 10, 34, 34, 34, 29, 8225, 34, 29,
+ 8225, 34, 29, 8225, 29, 34, 29, 34, 3, 34,
+ 34, 34, 34, 34, 34, 34, 31, 8225, 34, 31,
+
+ 8225, 34, 31, 34, 31, 8225, 34, 34, 30, 8225,
+ 34,16417, 8218, 8225, 34, 8218, 8225, 34, 8218, 8225,
+ 8218, 34, 8218, 34, 34, 32, 8225, 34, 32, 8225,
+ 34, 32, 8225, 32, 34, 32, 8217, 8225, 34, 8217,
+ 8225, 34, 8217, 8225, 8217, 34, 8217, 34, 8220, 8225,
+ 34, 8220, 8225, 34, 8220, 8225, 8220, 34, 8220, 34,
+ 34, 10, 24, 10, 15, 34, 7, 34, 34, 34,
+ 34, 34, 34, 34, 13, 34, 31, 8225, 34, 31,
+ 8225, 34, 31, 8225, 31, 34, 31, 2, 34, 30,
+ 8225, 34, 30, 8225, 34, 30, 34, 30, 8225, 17,
+
+ 34, 34, 11, 34, 23, 10, 10, 24, 15, 34,
+ 7, 24, 7, 34, 8, 34, 34, 34, 34, 6,
+ 34, 13, 34, 2, 24, 2, 34, 30, 8225, 34,
+ 30, 8225, 34, 30, 8225, 30, 34, 30, 17, 34,
+ 34, 11, 24, 11, 27, 8225, 34,16417, 23, 24,
+ 23, 7, 7, 24, 34, 8, 24, 8, 34, 34,
+ 34, 34, 6, 24, 6, 6, 24, 6, 24, 34,
+ 2, 2, 24, 34, 34, 11, 11, 24, 27, 8225,
+ 34, 27, 8225, 34, 27, 34, 27, 8225, 23, 24,
+ 34, 8, 8, 24, 34, 34, 18, 19, 6, 6,
+
+ 24, 6, 6, 34, 34, 14, 34, 27, 8225, 34,
+ 27, 8225, 34, 27, 8225, 27, 34, 27, 34, 34,
+ 34, 18, 24, 18, 19, 24, 19, 6, 6, 34,
+ 34, 14, 34, 21, 9, 20, 18, 18, 24, 19,
+ 19, 24, 6, 5, 6, 34, 22, 21, 24, 21,
+ 9, 24, 9, 20, 24, 20, 4, 6, 5, 6,
+ 34, 22, 24, 22, 21, 21, 24, 9, 9, 24,
+ 20, 20, 24, 4, 6, 12, 34, 22, 22, 24,
+ 12, 34
} ;
-static const flex_int16_t yy_accept[356] =
+static const flex_int16_t yy_accept[362] =
{ 0,
1, 1, 1, 2, 3, 4, 7, 12, 16, 19,
21, 24, 27, 30, 33, 36, 39, 42, 45, 48,
@@ -633,39 +634,40 @@ static const flex_int16_t yy_accept[356] =
74, 76, 79, 81, 82, 83, 84, 87, 87, 88,
89, 90, 91, 92, 93, 94, 95, 96, 97, 98,
99, 100, 101, 102, 103, 104, 105, 106, 107, 108,
- 109, 110, 111, 113, 115, 116, 118, 120, 121, 122,
+ 109, 110, 111, 112, 114, 116, 117, 119, 121, 122,
123, 124, 125, 126, 127, 128, 129, 130, 131, 132,
133, 134, 135, 136, 137, 138, 139, 140, 141, 142,
- 143, 144, 145, 146, 148, 150, 151, 152, 153, 154,
-
- 158, 159, 160, 162, 163, 164, 165, 166, 167, 168,
- 169, 170, 175, 176, 177, 181, 182, 187, 188, 189,
- 194, 195, 196, 197, 198, 199, 202, 205, 207, 209,
- 210, 212, 214, 215, 216, 217, 218, 222, 223, 224,
- 225, 228, 231, 233, 235, 236, 237, 240, 243, 245,
- 247, 250, 253, 255, 257, 258, 261, 264, 266, 268,
- 269, 270, 271, 272, 273, 276, 279, 281, 283, 284,
- 285, 287, 288, 289, 290, 291, 292, 293, 296, 299,
- 301, 303, 304, 305, 309, 312, 315, 317, 319, 320,
- 321, 322, 325, 328, 330, 332, 333, 336, 339, 341,
-
- 343, 344, 345, 348, 351, 353, 355, 356, 357, 358,
- 360, 361, 362, 363, 364, 365, 366, 367, 368, 369,
- 371, 374, 377, 379, 381, 382, 383, 384, 387, 390,
- 392, 394, 396, 397, 398, 399, 400, 401, 403, 405,
- 406, 407, 408, 409, 410, 411, 412, 413, 414, 416,
- 418, 419, 420, 423, 426, 428, 430, 431, 433, 434,
- 436, 437, 441, 443, 444, 445, 447, 448, 450, 451,
- 452, 453, 454, 455, 457, 458, 460, 462, 463, 464,
- 466, 467, 468, 469, 471, 474, 477, 479, 481, 483,
- 484, 485, 487, 488, 489, 490, 491, 492, 494, 495,
-
- 496, 497, 498, 500, 503, 506, 508, 510, 511, 512,
- 513, 514, 516, 517, 519, 520, 521, 522, 523, 524,
- 526, 527, 528, 529, 530, 532, 533, 535, 536, 538,
- 539, 540, 542, 543, 545, 546, 548, 549, 551, 553,
- 554, 556, 557, 558, 560, 561, 563, 564, 566, 568,
- 570, 571, 573, 575, 575
+ 143, 144, 145, 146, 147, 148, 150, 152, 153, 154,
+
+ 155, 156, 160, 161, 162, 164, 165, 166, 167, 168,
+ 169, 170, 171, 172, 177, 178, 179, 183, 184, 189,
+ 190, 191, 196, 197, 198, 199, 200, 201, 202, 205,
+ 208, 210, 212, 213, 215, 217, 218, 219, 220, 221,
+ 225, 226, 227, 228, 231, 234, 236, 238, 239, 240,
+ 243, 246, 248, 250, 253, 256, 258, 260, 261, 264,
+ 267, 269, 271, 272, 273, 274, 275, 276, 277, 280,
+ 283, 285, 287, 288, 289, 291, 292, 293, 294, 295,
+ 296, 297, 300, 303, 305, 307, 308, 309, 313, 316,
+ 319, 321, 323, 324, 325, 326, 329, 332, 334, 336,
+
+ 337, 340, 343, 345, 347, 348, 349, 352, 355, 357,
+ 359, 360, 361, 362, 364, 365, 367, 368, 369, 370,
+ 371, 372, 373, 374, 375, 377, 380, 383, 385, 387,
+ 388, 389, 390, 393, 396, 398, 400, 402, 403, 404,
+ 405, 406, 407, 409, 411, 413, 414, 415, 416, 417,
+ 418, 419, 420, 421, 422, 424, 426, 427, 428, 431,
+ 434, 436, 438, 439, 441, 442, 444, 445, 449, 451,
+ 452, 453, 455, 456, 458, 459, 460, 461, 462, 463,
+ 465, 466, 468, 470, 471, 472, 474, 475, 476, 477,
+ 479, 482, 485, 487, 489, 491, 492, 493, 495, 496,
+
+ 497, 498, 499, 500, 502, 503, 504, 505, 506, 508,
+ 511, 514, 516, 518, 519, 520, 521, 522, 524, 525,
+ 527, 528, 529, 530, 531, 532, 534, 535, 536, 537,
+ 538, 540, 541, 543, 544, 546, 547, 548, 550, 551,
+ 553, 554, 556, 557, 559, 561, 562, 564, 565, 566,
+ 568, 569, 571, 572, 574, 576, 578, 579, 581, 583,
+ 583
} ;
static const YY_CHAR yy_ec[256] =
@@ -708,216 +710,217 @@ static const YY_CHAR yy_meta[35] =
1, 1, 1, 1
} ;
-static const flex_int16_t yy_base[424] =
+static const flex_int16_t yy_base[430] =
{ 0,
- 0, 0, 901, 900, 902, 897, 33, 36, 905, 905,
- 45, 63, 31, 42, 51, 52, 890, 33, 65, 67,
- 69, 70, 889, 71, 888, 75, 0, 905, 893, 905,
- 91, 94, 0, 0, 103, 886, 112, 0, 89, 98,
- 113, 92, 114, 99, 100, 48, 121, 116, 119, 74,
- 124, 129, 123, 135, 132, 133, 137, 134, 138, 139,
- 141, 0, 155, 0, 0, 164, 0, 0, 849, 142,
- 152, 164, 140, 161, 165, 166, 167, 168, 169, 173,
- 174, 178, 176, 180, 184, 208, 189, 183, 192, 195,
- 215, 191, 193, 223, 0, 0, 905, 208, 204, 236,
-
- 219, 209, 238, 196, 237, 831, 242, 815, 241, 224,
- 243, 261, 244, 259, 277, 266, 286, 250, 288, 298,
- 249, 283, 274, 282, 294, 308, 0, 310, 0, 295,
- 305, 905, 308, 306, 313, 314, 342, 319, 316, 320,
- 331, 0, 349, 0, 342, 344, 356, 0, 358, 0,
- 365, 0, 367, 0, 354, 375, 0, 377, 0, 363,
- 356, 809, 327, 322, 384, 0, 0, 0, 0, 379,
- 905, 382, 384, 386, 390, 372, 392, 403, 0, 410,
- 0, 407, 413, 423, 426, 0, 0, 0, 0, 409,
- 424, 435, 0, 0, 0, 0, 437, 0, 0, 0,
-
- 0, 433, 444, 0, 0, 0, 0, 391, 440, 781,
- 905, 769, 439, 445, 444, 447, 449, 454, 453, 399,
- 464, 0, 0, 0, 0, 757, 465, 476, 0, 478,
- 0, 479, 476, 753, 462, 490, 749, 905, 745, 905,
- 483, 737, 424, 485, 487, 490, 500, 493, 905, 729,
- 905, 502, 518, 0, 0, 0, 0, 905, 498, 721,
- 905, 527, 713, 0, 705, 905, 495, 697, 905, 365,
- 521, 528, 530, 685, 905, 534, 540, 540, 657, 905,
- 537, 542, 650, 905, 553, 0, 557, 0, 0, 551,
- 641, 905, 558, 557, 633, 614, 613, 905, 547, 555,
-
- 563, 565, 569, 584, 0, 0, 0, 0, 583, 570,
- 585, 612, 905, 601, 905, 522, 580, 589, 594, 905,
- 600, 585, 563, 520, 905, 514, 905, 586, 486, 597,
- 480, 441, 905, 416, 905, 345, 905, 334, 905, 601,
- 254, 905, 242, 905, 200, 905, 151, 905, 905, 607,
- 86, 905, 905, 905, 620, 624, 627, 631, 635, 639,
- 643, 647, 651, 655, 659, 663, 667, 671, 675, 679,
- 683, 687, 691, 695, 699, 703, 707, 711, 715, 719,
- 723, 727, 731, 735, 739, 743, 747, 751, 755, 759,
- 763, 767, 771, 775, 779, 783, 787, 791, 795, 799,
-
- 803, 807, 811, 815, 819, 823, 827, 831, 835, 839,
- 843, 847, 851, 855, 859, 863, 867, 871, 875, 879,
- 883, 887, 891
+ 0, 0, 912, 911, 913, 908, 33, 36, 916, 916,
+ 45, 63, 31, 42, 51, 52, 901, 33, 65, 67,
+ 69, 70, 900, 71, 899, 77, 0, 916, 904, 916,
+ 93, 96, 0, 0, 105, 897, 114, 0, 91, 100,
+ 115, 94, 116, 101, 102, 48, 74, 118, 121, 123,
+ 78, 128, 131, 137, 124, 125, 133, 135, 136, 140,
+ 142, 141, 0, 163, 0, 0, 166, 0, 0, 902,
+ 143, 146, 163, 164, 166, 167, 149, 169, 170, 175,
+ 179, 176, 182, 177, 184, 192, 212, 193, 186, 196,
+ 187, 219, 201, 150, 199, 227, 0, 0, 916, 209,
+
+ 212, 243, 224, 213, 245, 223, 198, 895, 231, 894,
+ 244, 230, 243, 261, 255, 259, 279, 266, 288, 275,
+ 291, 301, 268, 284, 298, 301, 285, 302, 311, 0,
+ 314, 0, 311, 318, 916, 312, 317, 246, 232, 342,
+ 320, 325, 323, 349, 0, 351, 0, 344, 349, 360,
+ 0, 363, 0, 367, 0, 370, 0, 330, 377, 0,
+ 379, 0, 365, 358, 899, 368, 329, 331, 381, 0,
+ 0, 0, 0, 381, 916, 383, 385, 387, 391, 397,
+ 393, 409, 0, 411, 0, 412, 414, 424, 427, 0,
+ 0, 0, 0, 422, 425, 436, 0, 0, 0, 0,
+
+ 438, 0, 0, 0, 0, 434, 445, 0, 0, 0,
+ 0, 440, 442, 898, 916, 400, 897, 443, 448, 449,
+ 451, 453, 458, 457, 413, 469, 0, 0, 0, 0,
+ 896, 469, 480, 0, 482, 0, 483, 480, 895, 489,
+ 497, 894, 916, 916, 851, 916, 490, 839, 478, 492,
+ 494, 497, 507, 501, 916, 823, 916, 509, 525, 0,
+ 0, 0, 0, 916, 505, 811, 916, 534, 783, 0,
+ 771, 916, 518, 759, 916, 523, 528, 538, 540, 755,
+ 916, 511, 540, 549, 751, 916, 544, 547, 747, 916,
+ 560, 0, 562, 0, 0, 555, 739, 916, 484, 561,
+
+ 731, 723, 715, 916, 449, 566, 564, 566, 576, 578,
+ 0, 0, 0, 0, 584, 574, 586, 707, 916, 699,
+ 916, 581, 587, 590, 597, 916, 687, 659, 652, 643,
+ 916, 635, 916, 597, 616, 599, 614, 604, 916, 600,
+ 916, 541, 916, 467, 916, 603, 455, 916, 404, 916,
+ 385, 916, 328, 916, 916, 609, 203, 916, 916, 916,
+ 622, 626, 629, 633, 637, 641, 645, 649, 653, 657,
+ 661, 665, 669, 673, 677, 681, 685, 689, 693, 697,
+ 701, 705, 709, 713, 717, 721, 725, 729, 733, 737,
+ 741, 745, 749, 753, 757, 761, 765, 769, 773, 777,
+
+ 781, 785, 789, 793, 797, 801, 805, 809, 813, 817,
+ 821, 825, 829, 833, 837, 841, 845, 849, 853, 857,
+ 861, 865, 869, 873, 877, 881, 885, 889, 893
} ;
-static const flex_int16_t yy_def[424] =
+static const flex_int16_t yy_def[430] =
{ 0,
- 354, 1, 355, 355, 354, 356, 357, 357, 354, 354,
- 358, 358, 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 359, 354, 356, 354,
- 360, 357, 361, 361, 362, 12, 356, 363, 12, 12,
+ 360, 1, 361, 361, 360, 362, 363, 363, 360, 360,
+ 364, 364, 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 365, 360, 362, 360,
+ 366, 363, 367, 367, 368, 12, 362, 369, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 359, 360, 361, 361, 364, 365, 365, 354, 12,
+ 12, 12, 365, 366, 367, 367, 370, 371, 371, 360,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 362, 12, 12, 12, 12,
- 12, 12, 12, 364, 365, 365, 354, 12, 12, 366,
-
- 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 367, 86, 86, 368, 12, 369, 12, 12, 370,
- 12, 12, 12, 12, 12, 371, 372, 366, 372, 12,
- 12, 354, 86, 12, 12, 12, 373, 12, 12, 12,
- 374, 375, 367, 375, 86, 86, 376, 377, 368, 377,
- 378, 379, 369, 379, 12, 380, 381, 370, 381, 12,
- 12, 382, 12, 12, 371, 372, 372, 383, 383, 12,
- 354, 86, 86, 86, 12, 12, 12, 384, 385, 373,
- 385, 12, 12, 386, 374, 375, 375, 387, 387, 86,
- 86, 376, 377, 377, 388, 388, 378, 379, 379, 389,
-
- 389, 12, 380, 381, 381, 390, 390, 12, 12, 391,
- 354, 392, 86, 12, 86, 86, 86, 12, 86, 12,
- 384, 385, 385, 393, 393, 394, 86, 395, 396, 386,
- 396, 86, 86, 397, 12, 398, 391, 354, 399, 354,
- 86, 400, 12, 86, 86, 86, 401, 86, 354, 402,
- 354, 86, 395, 396, 396, 403, 403, 354, 86, 404,
- 354, 405, 406, 406, 399, 354, 86, 407, 354, 12,
- 86, 86, 86, 408, 354, 408, 408, 86, 402, 354,
- 86, 86, 404, 354, 409, 410, 405, 410, 406, 86,
- 407, 354, 12, 86, 411, 412, 408, 354, 408, 408,
-
- 86, 86, 86, 409, 410, 410, 413, 413, 86, 12,
- 86, 414, 354, 415, 354, 408, 408, 86, 86, 354,
- 416, 417, 418, 414, 354, 415, 354, 408, 408, 86,
- 419, 420, 354, 421, 354, 422, 354, 408, 354, 86,
- 423, 354, 420, 354, 421, 354, 422, 354, 354, 86,
- 423, 354, 354, 0, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
-
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354
+ 12, 12, 12, 12, 12, 12, 368, 12, 12, 12,
+ 12, 12, 12, 12, 12, 370, 371, 371, 360, 12,
+
+ 12, 372, 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 373, 87, 87, 374, 12, 375, 12,
+ 12, 376, 12, 12, 12, 12, 12, 12, 377, 378,
+ 372, 378, 12, 12, 360, 87, 12, 12, 12, 379,
+ 12, 12, 12, 380, 381, 373, 381, 87, 87, 382,
+ 383, 374, 383, 384, 385, 375, 385, 12, 386, 387,
+ 376, 387, 12, 12, 388, 12, 12, 12, 377, 378,
+ 378, 389, 389, 12, 360, 87, 87, 87, 12, 12,
+ 12, 390, 391, 379, 391, 12, 12, 392, 380, 381,
+ 381, 393, 393, 87, 87, 382, 383, 383, 394, 394,
+
+ 384, 385, 385, 395, 395, 12, 386, 387, 387, 396,
+ 396, 12, 12, 397, 360, 12, 398, 87, 12, 87,
+ 87, 87, 12, 87, 12, 390, 391, 391, 399, 399,
+ 400, 87, 401, 402, 392, 402, 87, 87, 403, 12,
+ 404, 397, 360, 360, 405, 360, 87, 406, 12, 87,
+ 87, 87, 407, 87, 360, 408, 360, 87, 401, 402,
+ 402, 409, 409, 360, 87, 410, 360, 411, 412, 412,
+ 405, 360, 87, 413, 360, 12, 87, 87, 87, 414,
+ 360, 414, 414, 87, 408, 360, 87, 87, 410, 360,
+ 415, 416, 411, 416, 412, 87, 413, 360, 12, 87,
+
+ 417, 418, 414, 360, 414, 414, 87, 87, 87, 415,
+ 416, 416, 419, 419, 87, 12, 87, 420, 360, 421,
+ 360, 414, 414, 87, 87, 360, 422, 423, 424, 420,
+ 360, 421, 360, 414, 414, 87, 425, 426, 360, 427,
+ 360, 428, 360, 414, 360, 87, 429, 360, 426, 360,
+ 427, 360, 428, 360, 360, 87, 429, 360, 360, 0,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360
} ;
-static const flex_int16_t yy_nxt[940] =
+static const flex_int16_t yy_nxt[951] =
{ 0,
6, 7, 8, 9, 6, 6, 6, 6, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 17, 17,
17, 17, 20, 17, 21, 22, 23, 24, 25, 17,
26, 17, 17, 17, 32, 32, 33, 32, 32, 33,
36, 34, 36, 42, 34, 29, 29, 29, 30, 35,
- 50, 36, 37, 38, 43, 44, 39, 36, 79, 45,
+ 50, 36, 37, 38, 43, 44, 39, 36, 80, 45,
36, 36, 40, 29, 29, 29, 30, 35, 46, 48,
37, 38, 41, 47, 36, 49, 36, 53, 36, 36,
- 36, 56, 58, 36, 36, 55, 82, 60, 51, 342,
- 54, 61, 52, 29, 64, 32, 32, 33, 36, 65,
-
- 70, 36, 34, 29, 29, 29, 30, 36, 36, 36,
- 29, 38, 66, 66, 66, 67, 66, 71, 74, 66,
- 68, 72, 36, 36, 73, 36, 77, 78, 36, 76,
- 36, 53, 36, 36, 75, 85, 80, 83, 36, 86,
- 84, 36, 36, 36, 36, 81, 36, 36, 36, 36,
- 36, 36, 93, 89, 337, 98, 88, 29, 64, 101,
- 90, 36, 91, 65, 92, 87, 29, 95, 89, 99,
- 36, 100, 96, 36, 36, 36, 36, 36, 36, 106,
- 105, 85, 36, 36, 102, 36, 107, 36, 103, 36,
- 109, 112, 36, 36, 104, 108, 115, 110, 36, 117,
-
- 36, 36, 36, 335, 36, 36, 122, 111, 29, 29,
- 29, 30, 118, 36, 116, 29, 38, 36, 36, 113,
- 114, 119, 120, 123, 36, 29, 95, 121, 36, 134,
- 131, 96, 130, 36, 125, 124, 126, 126, 66, 127,
- 126, 132, 133, 126, 129, 333, 36, 36, 135, 137,
- 36, 36, 36, 140, 139, 35, 35, 352, 36, 36,
- 85, 141, 141, 66, 142, 141, 160, 145, 141, 144,
- 35, 35, 89, 117, 155, 36, 146, 147, 147, 66,
- 148, 147, 162, 36, 147, 150, 151, 151, 66, 152,
- 151, 36, 36, 151, 154, 120, 161, 36, 156, 156,
-
- 66, 157, 156, 36, 36, 156, 159, 164, 171, 163,
- 29, 166, 29, 168, 36, 36, 167, 170, 169, 35,
- 35, 172, 36, 36, 173, 36, 213, 184, 36, 36,
- 175, 36, 174, 29, 186, 212, 36, 349, 183, 187,
- 177, 176, 178, 178, 66, 179, 178, 182, 348, 178,
- 181, 29, 188, 35, 35, 35, 35, 189, 29, 193,
- 29, 195, 190, 36, 194, 36, 196, 29, 198, 29,
- 200, 191, 36, 199, 36, 201, 219, 29, 204, 29,
- 206, 36, 202, 205, 209, 207, 29, 166, 36, 293,
- 208, 214, 167, 35, 35, 35, 35, 35, 35, 36,
-
- 36, 36, 249, 218, 220, 29, 222, 216, 36, 217,
- 235, 223, 29, 224, 215, 226, 36, 227, 225, 346,
- 35, 35, 36, 228, 228, 66, 229, 228, 29, 186,
- 228, 231, 232, 36, 187, 233, 35, 29, 193, 29,
- 198, 234, 36, 194, 344, 199, 29, 204, 236, 36,
- 35, 241, 205, 242, 36, 35, 35, 270, 35, 35,
- 35, 35, 247, 36, 35, 35, 29, 222, 244, 262,
- 248, 36, 223, 243, 245, 246, 35, 252, 29, 254,
- 29, 256, 258, 342, 255, 259, 257, 35, 35, 339,
- 35, 35, 69, 264, 35, 35, 35, 35, 35, 35,
-
- 267, 35, 35, 275, 35, 35, 35, 35, 271, 35,
- 35, 276, 277, 35, 35, 272, 278, 315, 273, 281,
- 29, 254, 290, 313, 282, 275, 255, 285, 285, 66,
- 286, 285, 35, 35, 285, 288, 295, 298, 296, 35,
- 35, 35, 35, 298, 301, 328, 299, 294, 35, 35,
- 275, 35, 35, 35, 303, 29, 305, 300, 275, 29,
- 307, 306, 35, 35, 302, 308, 337, 36, 35, 35,
- 309, 310, 320, 316, 35, 35, 35, 35, 322, 36,
- 35, 35, 317, 275, 319, 311, 29, 305, 335, 275,
- 318, 321, 306, 323, 35, 35, 35, 35, 330, 329,
-
- 35, 35, 331, 333, 327, 35, 35, 338, 35, 35,
- 353, 340, 35, 35, 350, 325, 275, 315, 35, 35,
- 27, 27, 27, 27, 29, 29, 29, 31, 31, 31,
- 31, 36, 36, 36, 36, 62, 313, 62, 62, 63,
- 63, 63, 63, 65, 269, 65, 65, 35, 35, 35,
- 35, 69, 69, 261, 69, 94, 94, 94, 94, 96,
- 251, 96, 96, 128, 128, 128, 128, 143, 143, 143,
- 143, 149, 149, 149, 149, 153, 153, 153, 153, 158,
- 158, 158, 158, 165, 165, 165, 165, 167, 298, 167,
- 167, 180, 180, 180, 180, 185, 185, 185, 185, 187,
-
- 292, 187, 187, 192, 192, 192, 192, 194, 240, 194,
- 194, 197, 197, 197, 197, 199, 289, 199, 199, 203,
- 203, 203, 203, 205, 284, 205, 205, 210, 210, 210,
- 210, 169, 280, 169, 169, 221, 221, 221, 221, 223,
- 269, 223, 223, 230, 230, 230, 230, 189, 266, 189,
- 189, 196, 211, 196, 196, 201, 261, 201, 201, 207,
- 251, 207, 207, 237, 237, 237, 237, 239, 239, 239,
- 239, 225, 240, 225, 225, 250, 250, 250, 250, 253,
- 253, 253, 253, 255, 238, 255, 255, 260, 260, 260,
- 260, 263, 263, 263, 263, 265, 265, 265, 265, 268,
-
- 268, 268, 268, 274, 274, 274, 274, 279, 279, 279,
- 279, 257, 211, 257, 257, 283, 283, 283, 283, 287,
- 287, 287, 287, 264, 138, 264, 264, 291, 291, 291,
- 291, 297, 297, 297, 297, 304, 304, 304, 304, 306,
- 136, 306, 306, 312, 312, 312, 312, 314, 314, 314,
- 314, 308, 97, 308, 308, 324, 324, 324, 324, 326,
- 326, 326, 326, 332, 332, 332, 332, 334, 334, 334,
- 334, 336, 336, 336, 336, 341, 341, 341, 341, 343,
- 343, 343, 343, 345, 345, 345, 345, 347, 347, 347,
- 347, 351, 351, 351, 351, 36, 30, 59, 57, 36,
-
- 30, 354, 28, 28, 5, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354
+ 36, 56, 58, 36, 53, 55, 36, 36, 51, 60,
+ 54, 84, 52, 61, 62, 29, 65, 32, 32, 33,
+
+ 36, 66, 71, 36, 34, 29, 29, 29, 30, 36,
+ 36, 36, 29, 38, 67, 67, 67, 68, 67, 72,
+ 75, 67, 69, 73, 36, 36, 74, 36, 78, 79,
+ 36, 77, 36, 36, 36, 83, 76, 36, 81, 85,
+ 36, 87, 36, 86, 36, 36, 36, 82, 89, 36,
+ 36, 36, 36, 94, 90, 36, 100, 88, 36, 36,
+ 92, 91, 93, 101, 90, 29, 65, 95, 29, 97,
+ 102, 66, 36, 36, 98, 36, 36, 106, 36, 36,
+ 125, 108, 107, 103, 36, 36, 36, 86, 36, 104,
+ 105, 36, 109, 36, 111, 36, 36, 110, 112, 114,
+
+ 117, 36, 36, 119, 120, 36, 348, 36, 36, 138,
+ 36, 113, 29, 29, 29, 30, 124, 118, 36, 29,
+ 38, 36, 36, 115, 116, 121, 122, 126, 36, 29,
+ 97, 123, 36, 36, 134, 98, 127, 133, 140, 36,
+ 36, 36, 128, 129, 129, 67, 130, 129, 135, 136,
+ 129, 132, 36, 36, 36, 36, 137, 142, 181, 143,
+ 86, 144, 144, 67, 145, 144, 35, 35, 144, 147,
+ 35, 35, 90, 119, 180, 36, 149, 36, 148, 150,
+ 150, 67, 151, 150, 36, 163, 150, 153, 154, 154,
+ 67, 155, 154, 36, 36, 154, 157, 164, 122, 158,
+
+ 36, 159, 159, 67, 160, 159, 165, 36, 159, 162,
+ 36, 36, 167, 29, 170, 168, 29, 172, 166, 171,
+ 36, 175, 173, 35, 35, 176, 36, 36, 177, 36,
+ 188, 343, 36, 174, 36, 218, 178, 217, 36, 36,
+ 36, 179, 182, 182, 67, 183, 182, 187, 186, 182,
+ 185, 29, 190, 29, 192, 35, 35, 191, 206, 193,
+ 35, 35, 29, 197, 194, 29, 199, 36, 198, 29,
+ 202, 200, 29, 204, 36, 203, 195, 36, 205, 29,
+ 208, 29, 210, 29, 170, 209, 213, 211, 341, 171,
+ 36, 216, 212, 219, 35, 35, 35, 35, 35, 35,
+
+ 36, 224, 36, 244, 223, 225, 36, 339, 221, 36,
+ 222, 29, 227, 29, 229, 220, 255, 228, 232, 230,
+ 231, 36, 36, 36, 233, 233, 67, 234, 233, 29,
+ 190, 233, 236, 35, 35, 191, 238, 35, 29, 197,
+ 29, 202, 239, 36, 198, 237, 203, 29, 208, 36,
+ 241, 36, 281, 209, 35, 247, 248, 36, 358, 240,
+ 35, 35, 35, 35, 35, 35, 253, 36, 35, 35,
+ 355, 29, 227, 250, 254, 322, 249, 228, 251, 252,
+ 35, 258, 29, 260, 29, 262, 264, 36, 261, 265,
+ 263, 35, 35, 36, 35, 35, 268, 316, 36, 70,
+
+ 270, 35, 35, 35, 35, 35, 35, 273, 35, 35,
+ 281, 276, 35, 35, 304, 277, 35, 35, 282, 283,
+ 35, 35, 278, 305, 284, 279, 287, 29, 260, 35,
+ 35, 288, 36, 261, 291, 291, 67, 292, 291, 35,
+ 35, 291, 294, 304, 354, 296, 301, 299, 302, 35,
+ 35, 35, 35, 307, 300, 35, 35, 306, 35, 309,
+ 35, 35, 29, 311, 29, 313, 35, 35, 312, 281,
+ 314, 308, 35, 35, 315, 35, 35, 35, 35, 326,
+ 29, 311, 328, 36, 281, 325, 312, 35, 35, 317,
+ 281, 324, 327, 323, 329, 35, 35, 35, 35, 336,
+
+ 281, 35, 35, 352, 334, 337, 335, 350, 35, 35,
+ 35, 35, 359, 346, 35, 35, 356, 348, 344, 345,
+ 35, 35, 27, 27, 27, 27, 29, 29, 29, 31,
+ 31, 31, 31, 36, 36, 36, 36, 63, 321, 63,
+ 63, 64, 64, 64, 64, 66, 319, 66, 66, 35,
+ 35, 35, 35, 70, 70, 343, 70, 96, 96, 96,
+ 96, 98, 341, 98, 98, 131, 131, 131, 131, 146,
+ 146, 146, 146, 152, 152, 152, 152, 156, 156, 156,
+ 156, 161, 161, 161, 161, 169, 169, 169, 169, 171,
+ 339, 171, 171, 184, 184, 184, 184, 189, 189, 189,
+
+ 189, 191, 333, 191, 191, 196, 196, 196, 196, 198,
+ 331, 198, 198, 201, 201, 201, 201, 203, 281, 203,
+ 203, 207, 207, 207, 207, 209, 321, 209, 209, 214,
+ 214, 214, 214, 173, 319, 173, 173, 226, 226, 226,
+ 226, 228, 275, 228, 228, 235, 235, 235, 235, 193,
+ 267, 193, 193, 200, 257, 200, 200, 205, 304, 205,
+ 205, 211, 298, 211, 211, 242, 242, 242, 242, 245,
+ 245, 245, 245, 230, 246, 230, 230, 256, 256, 256,
+ 256, 259, 259, 259, 259, 261, 295, 261, 261, 266,
+ 266, 266, 266, 269, 269, 269, 269, 271, 271, 271,
+
+ 271, 274, 274, 274, 274, 280, 280, 280, 280, 285,
+ 285, 285, 285, 263, 290, 263, 263, 289, 289, 289,
+ 289, 293, 293, 293, 293, 270, 286, 270, 270, 297,
+ 297, 297, 297, 303, 303, 303, 303, 310, 310, 310,
+ 310, 312, 275, 312, 312, 318, 318, 318, 318, 320,
+ 320, 320, 320, 314, 272, 314, 314, 330, 330, 330,
+ 330, 332, 332, 332, 332, 338, 338, 338, 338, 340,
+ 340, 340, 340, 342, 342, 342, 342, 347, 347, 347,
+ 347, 349, 349, 349, 349, 351, 351, 351, 351, 353,
+ 353, 353, 353, 357, 357, 357, 357, 215, 267, 257,
+
+ 246, 243, 215, 141, 139, 99, 36, 30, 59, 57,
+ 36, 30, 360, 28, 28, 5, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360
} ;
-static const flex_int16_t yy_chk[940] =
+static const flex_int16_t yy_chk[951] =
{ 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
@@ -927,101 +930,102 @@ static const flex_int16_t yy_chk[940] =
18, 14, 11, 11, 13, 14, 11, 46, 46, 14,
15, 16, 11, 12, 12, 12, 12, 12, 14, 16,
12, 12, 12, 15, 19, 16, 20, 20, 21, 22,
- 24, 22, 24, 50, 26, 21, 50, 26, 19, 351,
- 20, 26, 19, 31, 31, 32, 32, 32, 39, 31,
-
- 39, 42, 32, 35, 35, 35, 35, 40, 44, 45,
- 35, 35, 37, 37, 37, 37, 37, 39, 42, 37,
- 37, 40, 41, 43, 41, 48, 45, 45, 49, 44,
- 47, 47, 53, 51, 43, 53, 48, 51, 52, 54,
- 52, 55, 56, 58, 54, 49, 57, 59, 60, 73,
- 61, 70, 60, 61, 347, 70, 56, 63, 63, 73,
- 58, 71, 59, 63, 59, 55, 66, 66, 57, 71,
- 74, 72, 66, 72, 75, 76, 77, 78, 79, 78,
- 77, 79, 80, 81, 74, 83, 80, 82, 75, 84,
- 82, 85, 88, 85, 76, 81, 87, 83, 87, 89,
-
- 92, 89, 93, 345, 90, 104, 92, 84, 86, 86,
- 86, 86, 90, 99, 88, 86, 86, 98, 102, 86,
- 86, 91, 91, 93, 91, 94, 94, 91, 101, 104,
- 102, 94, 101, 110, 99, 98, 100, 100, 100, 100,
- 100, 103, 103, 100, 100, 343, 105, 103, 105, 107,
- 109, 107, 111, 110, 109, 113, 113, 341, 121, 118,
- 111, 112, 112, 112, 112, 112, 121, 113, 112, 112,
- 114, 114, 116, 116, 118, 116, 114, 115, 115, 115,
- 115, 115, 123, 123, 115, 115, 117, 117, 117, 117,
- 117, 124, 122, 117, 117, 119, 122, 119, 120, 120,
-
- 120, 120, 120, 125, 130, 120, 120, 125, 131, 124,
- 126, 126, 128, 128, 131, 134, 126, 130, 128, 133,
- 133, 133, 135, 136, 133, 139, 164, 140, 138, 140,
- 134, 164, 133, 141, 141, 163, 163, 338, 139, 141,
- 136, 135, 137, 137, 137, 137, 137, 138, 336, 137,
- 137, 143, 143, 145, 145, 146, 146, 143, 147, 147,
- 149, 149, 145, 155, 147, 161, 149, 151, 151, 153,
- 153, 146, 160, 151, 270, 153, 176, 156, 156, 158,
- 158, 176, 155, 156, 161, 158, 165, 165, 170, 270,
- 160, 170, 165, 172, 172, 173, 173, 174, 174, 175,
-
- 208, 177, 220, 175, 177, 178, 178, 173, 220, 174,
- 208, 178, 180, 180, 172, 182, 182, 183, 180, 334,
- 190, 190, 183, 184, 184, 184, 184, 184, 185, 185,
- 184, 184, 190, 243, 185, 191, 191, 192, 192, 197,
- 197, 202, 202, 192, 332, 197, 203, 203, 209, 209,
- 213, 213, 203, 214, 214, 215, 215, 243, 216, 216,
- 217, 217, 218, 218, 219, 219, 221, 221, 215, 235,
- 219, 235, 221, 214, 216, 217, 227, 227, 228, 228,
- 230, 230, 232, 331, 228, 233, 230, 233, 233, 329,
- 232, 232, 236, 236, 241, 241, 244, 244, 245, 245,
-
- 241, 246, 246, 247, 248, 248, 267, 267, 244, 259,
- 259, 247, 247, 252, 252, 245, 248, 326, 246, 252,
- 253, 253, 267, 324, 259, 316, 253, 262, 262, 262,
- 262, 262, 271, 271, 262, 262, 272, 276, 273, 272,
- 272, 273, 273, 277, 278, 316, 276, 271, 281, 281,
- 299, 278, 278, 282, 282, 285, 285, 277, 300, 287,
- 287, 285, 290, 290, 281, 287, 323, 293, 294, 294,
- 290, 293, 303, 299, 301, 301, 302, 302, 310, 310,
- 303, 303, 300, 317, 302, 294, 304, 304, 322, 328,
- 301, 309, 304, 311, 309, 309, 311, 311, 318, 317,
-
- 318, 318, 319, 321, 314, 319, 319, 328, 330, 330,
- 350, 330, 340, 340, 340, 312, 297, 296, 350, 350,
- 355, 355, 355, 355, 356, 356, 356, 357, 357, 357,
- 357, 358, 358, 358, 358, 359, 295, 359, 359, 360,
- 360, 360, 360, 361, 291, 361, 361, 362, 362, 362,
- 362, 363, 363, 283, 363, 364, 364, 364, 364, 365,
- 279, 365, 365, 366, 366, 366, 366, 367, 367, 367,
- 367, 368, 368, 368, 368, 369, 369, 369, 369, 370,
- 370, 370, 370, 371, 371, 371, 371, 372, 274, 372,
- 372, 373, 373, 373, 373, 374, 374, 374, 374, 375,
-
- 268, 375, 375, 376, 376, 376, 376, 377, 265, 377,
- 377, 378, 378, 378, 378, 379, 263, 379, 379, 380,
- 380, 380, 380, 381, 260, 381, 381, 382, 382, 382,
- 382, 383, 250, 383, 383, 384, 384, 384, 384, 385,
- 242, 385, 385, 386, 386, 386, 386, 387, 239, 387,
- 387, 388, 237, 388, 388, 389, 234, 389, 389, 390,
- 226, 390, 390, 391, 391, 391, 391, 392, 392, 392,
- 392, 393, 212, 393, 393, 394, 394, 394, 394, 395,
- 395, 395, 395, 396, 210, 396, 396, 397, 397, 397,
- 397, 398, 398, 398, 398, 399, 399, 399, 399, 400,
-
- 400, 400, 400, 401, 401, 401, 401, 402, 402, 402,
- 402, 403, 162, 403, 403, 404, 404, 404, 404, 405,
- 405, 405, 405, 406, 108, 406, 406, 407, 407, 407,
- 407, 408, 408, 408, 408, 409, 409, 409, 409, 410,
- 106, 410, 410, 411, 411, 411, 411, 412, 412, 412,
- 412, 413, 69, 413, 413, 414, 414, 414, 414, 415,
- 415, 415, 415, 416, 416, 416, 416, 417, 417, 417,
- 417, 418, 418, 418, 418, 419, 419, 419, 419, 420,
- 420, 420, 420, 421, 421, 421, 421, 422, 422, 422,
- 422, 423, 423, 423, 423, 36, 29, 25, 23, 17,
-
- 6, 5, 4, 3, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
- 354, 354, 354, 354, 354, 354, 354, 354, 354
+ 24, 22, 24, 47, 47, 21, 26, 51, 19, 26,
+ 20, 51, 19, 26, 26, 31, 31, 32, 32, 32,
+
+ 39, 31, 39, 42, 32, 35, 35, 35, 35, 40,
+ 44, 45, 35, 35, 37, 37, 37, 37, 37, 39,
+ 42, 37, 37, 40, 41, 43, 41, 48, 45, 45,
+ 49, 44, 50, 55, 56, 50, 43, 52, 48, 52,
+ 53, 54, 57, 53, 58, 59, 54, 49, 56, 60,
+ 62, 61, 71, 60, 61, 72, 71, 55, 77, 94,
+ 59, 58, 59, 72, 57, 64, 64, 62, 67, 67,
+ 73, 64, 73, 74, 67, 75, 76, 77, 78, 79,
+ 94, 79, 78, 74, 80, 82, 84, 80, 81, 75,
+ 76, 83, 81, 85, 83, 89, 91, 82, 84, 86,
+
+ 88, 86, 88, 90, 91, 90, 357, 107, 95, 107,
+ 93, 85, 87, 87, 87, 87, 93, 89, 100, 87,
+ 87, 101, 104, 87, 87, 92, 92, 95, 92, 96,
+ 96, 92, 106, 103, 104, 96, 100, 103, 109, 112,
+ 109, 139, 101, 102, 102, 102, 102, 102, 105, 105,
+ 102, 102, 113, 111, 105, 138, 106, 111, 139, 112,
+ 113, 114, 114, 114, 114, 114, 115, 115, 114, 114,
+ 116, 116, 118, 118, 138, 118, 116, 123, 115, 117,
+ 117, 117, 117, 117, 120, 123, 117, 117, 119, 119,
+ 119, 119, 119, 124, 127, 119, 119, 124, 121, 120,
+
+ 121, 122, 122, 122, 122, 122, 125, 125, 122, 122,
+ 126, 128, 127, 129, 129, 128, 131, 131, 126, 129,
+ 133, 134, 131, 136, 136, 136, 137, 134, 136, 141,
+ 143, 353, 143, 133, 142, 168, 136, 167, 167, 158,
+ 168, 137, 140, 140, 140, 140, 140, 142, 141, 140,
+ 140, 144, 144, 146, 146, 148, 148, 144, 158, 146,
+ 149, 149, 150, 150, 148, 152, 152, 164, 150, 154,
+ 154, 152, 156, 156, 163, 154, 149, 166, 156, 159,
+ 159, 161, 161, 169, 169, 159, 164, 161, 351, 169,
+ 174, 166, 163, 174, 176, 176, 177, 177, 178, 178,
+
+ 179, 180, 181, 216, 179, 181, 180, 349, 177, 216,
+ 178, 182, 182, 184, 184, 176, 225, 182, 187, 184,
+ 186, 186, 225, 187, 188, 188, 188, 188, 188, 189,
+ 189, 188, 188, 194, 194, 189, 195, 195, 196, 196,
+ 201, 201, 206, 206, 196, 194, 201, 207, 207, 212,
+ 213, 213, 305, 207, 218, 218, 219, 219, 347, 212,
+ 220, 220, 221, 221, 222, 222, 223, 223, 224, 224,
+ 344, 226, 226, 220, 224, 305, 219, 226, 221, 222,
+ 232, 232, 233, 233, 235, 235, 237, 249, 233, 238,
+ 235, 238, 238, 299, 237, 237, 240, 299, 240, 241,
+
+ 241, 247, 247, 250, 250, 251, 251, 247, 252, 252,
+ 253, 249, 254, 254, 282, 250, 265, 265, 253, 253,
+ 258, 258, 251, 282, 254, 252, 258, 259, 259, 273,
+ 273, 265, 276, 259, 268, 268, 268, 268, 268, 277,
+ 277, 268, 268, 283, 342, 273, 278, 276, 279, 278,
+ 278, 279, 279, 284, 277, 287, 287, 283, 288, 288,
+ 284, 284, 291, 291, 293, 293, 296, 296, 291, 306,
+ 293, 287, 300, 300, 296, 307, 307, 308, 308, 309,
+ 310, 310, 316, 316, 322, 308, 310, 309, 309, 300,
+ 323, 307, 315, 306, 317, 315, 315, 317, 317, 324,
+
+ 334, 324, 324, 340, 322, 325, 323, 338, 325, 325,
+ 336, 336, 356, 336, 346, 346, 346, 337, 334, 335,
+ 356, 356, 361, 361, 361, 361, 362, 362, 362, 363,
+ 363, 363, 363, 364, 364, 364, 364, 365, 332, 365,
+ 365, 366, 366, 366, 366, 367, 330, 367, 367, 368,
+ 368, 368, 368, 369, 369, 329, 369, 370, 370, 370,
+ 370, 371, 328, 371, 371, 372, 372, 372, 372, 373,
+ 373, 373, 373, 374, 374, 374, 374, 375, 375, 375,
+ 375, 376, 376, 376, 376, 377, 377, 377, 377, 378,
+ 327, 378, 378, 379, 379, 379, 379, 380, 380, 380,
+
+ 380, 381, 320, 381, 381, 382, 382, 382, 382, 383,
+ 318, 383, 383, 384, 384, 384, 384, 385, 303, 385,
+ 385, 386, 386, 386, 386, 387, 302, 387, 387, 388,
+ 388, 388, 388, 389, 301, 389, 389, 390, 390, 390,
+ 390, 391, 297, 391, 391, 392, 392, 392, 392, 393,
+ 289, 393, 393, 394, 285, 394, 394, 395, 280, 395,
+ 395, 396, 274, 396, 396, 397, 397, 397, 397, 398,
+ 398, 398, 398, 399, 271, 399, 399, 400, 400, 400,
+ 400, 401, 401, 401, 401, 402, 269, 402, 402, 403,
+ 403, 403, 403, 404, 404, 404, 404, 405, 405, 405,
+
+ 405, 406, 406, 406, 406, 407, 407, 407, 407, 408,
+ 408, 408, 408, 409, 266, 409, 409, 410, 410, 410,
+ 410, 411, 411, 411, 411, 412, 256, 412, 412, 413,
+ 413, 413, 413, 414, 414, 414, 414, 415, 415, 415,
+ 415, 416, 248, 416, 416, 417, 417, 417, 417, 418,
+ 418, 418, 418, 419, 245, 419, 419, 420, 420, 420,
+ 420, 421, 421, 421, 421, 422, 422, 422, 422, 423,
+ 423, 423, 423, 424, 424, 424, 424, 425, 425, 425,
+ 425, 426, 426, 426, 426, 427, 427, 427, 427, 428,
+ 428, 428, 428, 429, 429, 429, 429, 242, 239, 231,
+
+ 217, 214, 165, 110, 108, 70, 36, 29, 25, 23,
+ 17, 6, 5, 4, 3, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
+ 360, 360, 360, 360, 360, 360, 360, 360, 360, 360
} ;
#define YY_TRAILING_MASK 0x2000
@@ -1199,9 +1203,9 @@ static int vdev_and_devtype(DiskParseContext *dpc, char *str) {
#undef DPC /* needs to be defined differently the actual lexer */
#define DPC ((DiskParseContext*)yyextra)
-#line 1202 "libxlu_disk_l.c"
+#line 1206 "libxlu_disk_l.c"
-#line 1204 "libxlu_disk_l.c"
+#line 1208 "libxlu_disk_l.c"
#define INITIAL 0
#define LEXERR 1
@@ -1483,7 +1487,7 @@ YY_DECL
#line 180 "libxlu_disk_l.l"
/*----- the scanner rules which do the parsing -----*/
-#line 1486 "libxlu_disk_l.c"
+#line 1490 "libxlu_disk_l.c"
while ( /*CONSTCOND*/1 ) /* loops until end-of-file is reached */
{
@@ -1515,14 +1519,14 @@ yy_match:
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 355 )
+ if ( yy_current_state >= 361 )
yy_c = yy_meta[yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
*yyg->yy_state_ptr++ = yy_current_state;
++yy_cp;
}
- while ( yy_current_state != 354 );
+ while ( yy_current_state != 360 );
yy_find_action:
yy_current_state = *--yyg->yy_state_ptr;
@@ -1648,76 +1652,81 @@ YY_RULE_SETUP
#line 201 "libxlu_disk_l.l"
{ libxl_defbool_set(&DPC->disk->discard_enable, false); }
YY_BREAK
-/* Note that the COLO configuration settings should be considered unstable.
- * They may change incompatibly in future versions of Xen. */
case 15:
YY_RULE_SETUP
-#line 204 "libxlu_disk_l.l"
-{ libxl_defbool_set(&DPC->disk->colo_enable, true); }
+#line 202 "libxlu_disk_l.l"
+{ DPC->disk->virtio = 1; }
YY_BREAK
+/* Note that the COLO configuration settings should be considered unstable.
+ * They may change incompatibly in future versions of Xen. */
case 16:
YY_RULE_SETUP
#line 205 "libxlu_disk_l.l"
-{ libxl_defbool_set(&DPC->disk->colo_enable, false); }
+{ libxl_defbool_set(&DPC->disk->colo_enable, true); }
YY_BREAK
case 17:
-/* rule 17 can match eol */
YY_RULE_SETUP
#line 206 "libxlu_disk_l.l"
-{ STRIP(','); SAVESTRING("colo-host", colo_host, FROMEQUALS); }
+{ libxl_defbool_set(&DPC->disk->colo_enable, false); }
YY_BREAK
case 18:
/* rule 18 can match eol */
YY_RULE_SETUP
#line 207 "libxlu_disk_l.l"
-{ STRIP(','); setcoloport(DPC, FROMEQUALS); }
+{ STRIP(','); SAVESTRING("colo-host", colo_host, FROMEQUALS); }
YY_BREAK
case 19:
/* rule 19 can match eol */
YY_RULE_SETUP
#line 208 "libxlu_disk_l.l"
-{ STRIP(','); SAVESTRING("colo-export", colo_export, FROMEQUALS); }
+{ STRIP(','); setcoloport(DPC, FROMEQUALS); }
YY_BREAK
case 20:
/* rule 20 can match eol */
YY_RULE_SETUP
#line 209 "libxlu_disk_l.l"
-{ STRIP(','); SAVESTRING("active-disk", active_disk, FROMEQUALS); }
+{ STRIP(','); SAVESTRING("colo-export", colo_export, FROMEQUALS); }
YY_BREAK
case 21:
/* rule 21 can match eol */
YY_RULE_SETUP
#line 210 "libxlu_disk_l.l"
+{ STRIP(','); SAVESTRING("active-disk", active_disk, FROMEQUALS); }
+ YY_BREAK
+case 22:
+/* rule 22 can match eol */
+YY_RULE_SETUP
+#line 211 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("hidden-disk", hidden_disk, FROMEQUALS); }
YY_BREAK
/* the target magic parameter, eats the rest of the string */
-case 22:
+case 23:
YY_RULE_SETUP
-#line 214 "libxlu_disk_l.l"
+#line 215 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("target", pdev_path, FROMEQUALS); }
YY_BREAK
/* unknown parameters */
-case 23:
-/* rule 23 can match eol */
+case 24:
+/* rule 24 can match eol */
YY_RULE_SETUP
-#line 218 "libxlu_disk_l.l"
+#line 219 "libxlu_disk_l.l"
{ xlu__disk_err(DPC,yytext,"unknown parameter"); }
YY_BREAK
/* deprecated prefixes */
/* the "/.*" in these patterns ensures that they count as if they
* matched the whole string, so these patterns take precedence */
-case 24:
+case 25:
YY_RULE_SETUP
-#line 225 "libxlu_disk_l.l"
+#line 226 "libxlu_disk_l.l"
{
STRIP(':');
DPC->had_depr_prefix=1; DEPRECATE("use `[format=]...,'");
setformat(DPC, yytext);
}
YY_BREAK
-case 25:
+case 26:
YY_RULE_SETUP
-#line 231 "libxlu_disk_l.l"
+#line 232 "libxlu_disk_l.l"
{
char *newscript;
STRIP(':');
@@ -1731,30 +1740,22 @@ YY_RULE_SETUP
free(newscript);
}
YY_BREAK
-case 26:
+case 27:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
yyg->yy_c_buf_p = yy_cp = yy_bp + 8;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 244 "libxlu_disk_l.l"
-{ DPC->had_depr_prefix=1; DEPRECATE(0); }
- YY_BREAK
-case 27:
-YY_RULE_SETUP
#line 245 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 28:
-*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
-yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
-YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 246 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 29:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
-yyg->yy_c_buf_p = yy_cp = yy_bp + 6;
+yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 247 "libxlu_disk_l.l"
@@ -1762,7 +1763,7 @@ YY_RULE_SETUP
YY_BREAK
case 30:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
-yyg->yy_c_buf_p = yy_cp = yy_bp + 5;
+yyg->yy_c_buf_p = yy_cp = yy_bp + 6;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 248 "libxlu_disk_l.l"
@@ -1770,26 +1771,34 @@ YY_RULE_SETUP
YY_BREAK
case 31:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
-yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
+yyg->yy_c_buf_p = yy_cp = yy_bp + 5;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 249 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 32:
-/* rule 32 can match eol */
+*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
+yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
+YY_DO_BEFORE_ACTION; /* set up yytext again */
+YY_RULE_SETUP
+#line 250 "libxlu_disk_l.l"
+{ DPC->had_depr_prefix=1; DEPRECATE(0); }
+ YY_BREAK
+case 33:
+/* rule 33 can match eol */
YY_RULE_SETUP
-#line 251 "libxlu_disk_l.l"
+#line 252 "libxlu_disk_l.l"
{
xlu__disk_err(DPC,yytext,"unknown deprecated disk prefix");
return 0;
}
YY_BREAK
/* positional parameters */
-case 33:
-/* rule 33 can match eol */
+case 34:
+/* rule 34 can match eol */
YY_RULE_SETUP
-#line 258 "libxlu_disk_l.l"
+#line 259 "libxlu_disk_l.l"
{
STRIP(',');
@@ -1816,27 +1825,27 @@ YY_RULE_SETUP
}
}
YY_BREAK
-case 34:
+case 35:
YY_RULE_SETUP
-#line 284 "libxlu_disk_l.l"
+#line 285 "libxlu_disk_l.l"
{
BEGIN(LEXERR);
yymore();
}
YY_BREAK
-case 35:
+case 36:
YY_RULE_SETUP
-#line 288 "libxlu_disk_l.l"
+#line 289 "libxlu_disk_l.l"
{
xlu__disk_err(DPC,yytext,"bad disk syntax"); return 0;
}
YY_BREAK
-case 36:
+case 37:
YY_RULE_SETUP
-#line 291 "libxlu_disk_l.l"
+#line 292 "libxlu_disk_l.l"
YY_FATAL_ERROR( "flex scanner jammed" );
YY_BREAK
-#line 1839 "libxlu_disk_l.c"
+#line 1848 "libxlu_disk_l.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(LEXERR):
yyterminate();
@@ -2104,7 +2113,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 355 )
+ if ( yy_current_state >= 361 )
yy_c = yy_meta[yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
@@ -2128,11 +2137,11 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 355 )
+ if ( yy_current_state >= 361 )
yy_c = yy_meta[yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
- yy_is_jam = (yy_current_state == 354);
+ yy_is_jam = (yy_current_state == 360);
if ( ! yy_is_jam )
*yyg->yy_state_ptr++ = yy_current_state;
@@ -2941,4 +2950,4 @@ void yyfree (void * ptr , yyscan_t yyscanner)
#define YYTABLES_NAME "yytables"
-#line 291 "libxlu_disk_l.l"
+#line 292 "libxlu_disk_l.l"
diff --git a/tools/libs/util/libxlu_disk_l.h b/tools/libs/util/libxlu_disk_l.h
index 6abeecf..df20fcc 100644
--- a/tools/libs/util/libxlu_disk_l.h
+++ b/tools/libs/util/libxlu_disk_l.h
@@ -694,7 +694,7 @@ extern int yylex (yyscan_t yyscanner);
#undef yyTABLES_NAME
#endif
-#line 291 "libxlu_disk_l.l"
+#line 292 "libxlu_disk_l.l"
#line 699 "libxlu_disk_l.h"
#undef xlu__disk_yyIN_HEADER
diff --git a/tools/libs/util/libxlu_disk_l.l b/tools/libs/util/libxlu_disk_l.l
index 3bd639a..d68a59c 100644
--- a/tools/libs/util/libxlu_disk_l.l
+++ b/tools/libs/util/libxlu_disk_l.l
@@ -198,6 +198,7 @@ script=[^,]*,? { STRIP(','); SAVESTRING("script", script, FROMEQUALS); }
direct-io-safe,? { DPC->disk->direct_io_safe = 1; }
discard,? { libxl_defbool_set(&DPC->disk->discard_enable, true); }
no-discard,? { libxl_defbool_set(&DPC->disk->discard_enable, false); }
+virtio,? { DPC->disk->virtio = 1; }
/* Note that the COLO configuration settings should be considered unstable.
* They may change incompatibly in future versions of Xen. */
colo,? { libxl_defbool_set(&DPC->disk->colo_enable, true); }
diff --git a/tools/xl/xl_block.c b/tools/xl/xl_block.c
index 70eed43..50a4d45 100644
--- a/tools/xl/xl_block.c
+++ b/tools/xl/xl_block.c
@@ -50,6 +50,11 @@ int main_blockattach(int argc, char **argv)
return 0;
}
+ if (disk.virtio) {
+ fprintf(stderr, "block-attach is not supported for Virtio device\n");
+ return 1;
+ }
+
if (libxl_device_disk_add(ctx, fe_domid, &disk, 0)) {
fprintf(stderr, "libxl_device_disk_add failed.\n");
return 1;
@@ -119,6 +124,12 @@ int main_blockdetach(int argc, char **argv)
fprintf(stderr, "Error: Device %s not connected.\n", argv[optind+1]);
return 1;
}
+
+ if (disk.virtio) {
+ fprintf(stderr, "block-detach is not supported for Virtio device\n");
+ return 1;
+ }
+
rc = !force ? libxl_device_disk_safe_remove(ctx, domid, &disk, 0) :
libxl_device_disk_destroy(ctx, domid, &disk, 0);
if (rc) {
--
2.7.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm
2021-12-08 16:59 [PATCH V6 0/2] Virtio support for toolstack on Arm (Was "IOREQ feature (+ virtio-mmio) on Arm") Oleksandr Tyshchenko
2021-12-08 16:59 ` [PATCH V6 1/2] libxl: Add support for Virtio disk configuration Oleksandr Tyshchenko
@ 2021-12-08 16:59 ` Oleksandr Tyshchenko
2021-12-09 6:03 ` Jiamei Xie
2021-12-09 6:34 ` Henry Wang
1 sibling, 2 replies; 20+ messages in thread
From: Oleksandr Tyshchenko @ 2021-12-08 16:59 UTC (permalink / raw)
To: xen-devel
Cc: Julien Grall, Wei Liu, Anthony PERARD, Juergen Gross,
Stefano Stabellini, Julien Grall, Volodymyr Babchuk,
Bertrand Marquis, Oleksandr Tyshchenko
From: Julien Grall <julien.grall@arm.com>
This patch introduces helpers to allocate Virtio MMIO params
(IRQ and memory region) and create specific device node in
the Guest device-tree with allocated params. In order to deal
with multiple Virtio devices, reserve corresponding ranges.
For now, we reserve 1MB for memory regions and 10 SPIs.
As these helpers should be used for every Virtio device attached
to the Guest, call them for Virtio disk(s).
Please note, with statically allocated Virtio IRQs there is
a risk of a clash with a physical IRQs of passthrough devices.
For the first version, it's fine, but we should consider allocating
the Virtio IRQs automatically. Thankfully, we know in advance which
IRQs will be used for passthrough to be able to choose non-clashed
ones.
Signed-off-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
---
Please note, this is a split/cleanup/hardening of Julien's PoC:
"Add support for Guest IO forwarding to a device emulator"
Changes RFC -> V1:
- was squashed with:
"[RFC PATCH V1 09/12] libxl: Handle virtio-mmio irq in more correct way"
"[RFC PATCH V1 11/12] libxl: Insert "dma-coherent" property into virtio-mmio device node"
"[RFC PATCH V1 12/12] libxl: Fix duplicate memory node in DT"
- move VirtIO MMIO #define-s to xen/include/public/arch-arm.h
Changes V1 -> V2:
- update the author of a patch
Changes V2 -> V3:
- no changes
Changes V3 -> V4:
- no changes
Changes V4 -> V5:
- split the changes, change the order of the patches
- drop an extra "virtio" configuration option
- update patch description
- use CONTAINER_OF instead of own implementation
- reserve ranges for Virtio MMIO params and put them
in correct location
- create helpers to allocate Virtio MMIO params, add
corresponding sanity-сhecks
- add comment why MMIO size 0x200 is chosen
- update debug print
- drop Wei's T-b
Changes V5 -> V6:
- rebase on current staging
---
tools/libs/light/libxl_arm.c | 131 +++++++++++++++++++++++++++++++++++++++++-
xen/include/public/arch-arm.h | 7 +++
2 files changed, 136 insertions(+), 2 deletions(-)
diff --git a/tools/libs/light/libxl_arm.c b/tools/libs/light/libxl_arm.c
index eef1de0..d475249 100644
--- a/tools/libs/light/libxl_arm.c
+++ b/tools/libs/light/libxl_arm.c
@@ -8,6 +8,56 @@
#include <assert.h>
#include <xen/device_tree_defs.h>
+/*
+ * There is no clear requirements for the total size of Virtio MMIO region.
+ * The size of control registers is 0x100 and device-specific configuration
+ * registers starts at the offset 0x100, however it's size depends on the device
+ * and the driver. Pick the biggest known size at the moment to cover most
+ * of the devices (also consider allowing the user to configure the size via
+ * config file for the one not conforming with the proposed value).
+ */
+#define VIRTIO_MMIO_DEV_SIZE xen_mk_ullong(0x200)
+
+static uint64_t virtio_mmio_base;
+static uint32_t virtio_mmio_irq;
+
+static void init_virtio_mmio_params(void)
+{
+ virtio_mmio_base = GUEST_VIRTIO_MMIO_BASE;
+ virtio_mmio_irq = GUEST_VIRTIO_MMIO_SPI_FIRST;
+}
+
+static uint64_t alloc_virtio_mmio_base(libxl__gc *gc)
+{
+ uint64_t base = virtio_mmio_base;
+
+ /* Make sure we have enough reserved resources */
+ if ((virtio_mmio_base + VIRTIO_MMIO_DEV_SIZE >
+ GUEST_VIRTIO_MMIO_BASE + GUEST_VIRTIO_MMIO_SIZE)) {
+ LOG(ERROR, "Ran out of reserved range for Virtio MMIO BASE 0x%"PRIx64"\n",
+ virtio_mmio_base);
+ return 0;
+ }
+ virtio_mmio_base += VIRTIO_MMIO_DEV_SIZE;
+
+ return base;
+}
+
+static uint32_t alloc_virtio_mmio_irq(libxl__gc *gc)
+{
+ uint32_t irq = virtio_mmio_irq;
+
+ /* Make sure we have enough reserved resources */
+ if (virtio_mmio_irq > GUEST_VIRTIO_MMIO_SPI_LAST) {
+ LOG(ERROR, "Ran out of reserved range for Virtio MMIO IRQ %u\n",
+ virtio_mmio_irq);
+ return 0;
+ }
+ virtio_mmio_irq++;
+
+ return irq;
+}
+
static const char *gicv_to_string(libxl_gic_version gic_version)
{
switch (gic_version) {
@@ -26,8 +76,8 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
{
uint32_t nr_spis = 0;
unsigned int i;
- uint32_t vuart_irq;
- bool vuart_enabled = false;
+ uint32_t vuart_irq, virtio_irq = 0;
+ bool vuart_enabled = false, virtio_enabled = false;
/*
* If pl011 vuart is enabled then increment the nr_spis to allow allocation
@@ -39,6 +89,35 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
vuart_enabled = true;
}
+ /*
+ * Virtio MMIO params are non-unique across the whole system and must be
+ * initialized for every new guest.
+ */
+ init_virtio_mmio_params();
+ for (i = 0; i < d_config->num_disks; i++) {
+ libxl_device_disk *disk = &d_config->disks[i];
+
+ if (disk->virtio) {
+ disk->base = alloc_virtio_mmio_base(gc);
+ if (!disk->base)
+ return ERROR_FAIL;
+
+ disk->irq = alloc_virtio_mmio_irq(gc);
+ if (!disk->irq)
+ return ERROR_FAIL;
+
+ if (virtio_irq < disk->irq)
+ virtio_irq = disk->irq;
+ virtio_enabled = true;
+
+ LOG(DEBUG, "Allocate Virtio MMIO params for Vdev %s: IRQ %u BASE 0x%"PRIx64,
+ disk->vdev, disk->irq, disk->base);
+ }
+ }
+
+ if (virtio_enabled)
+ nr_spis += (virtio_irq - 32) + 1;
+
for (i = 0; i < d_config->b_info.num_irqs; i++) {
uint32_t irq = d_config->b_info.irqs[i];
uint32_t spi;
@@ -58,6 +137,13 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
return ERROR_FAIL;
}
+ /* The same check as for vpl011 */
+ if (virtio_enabled &&
+ (irq >= GUEST_VIRTIO_MMIO_SPI_FIRST && irq <= virtio_irq)) {
+ LOG(ERROR, "Physical IRQ %u conflicting with Virtio MMIO IRQ range\n", irq);
+ return ERROR_FAIL;
+ }
+
if (irq < 32)
continue;
@@ -787,6 +873,39 @@ static int make_vpci_node(libxl__gc *gc, void *fdt,
return 0;
}
+
+static int make_virtio_mmio_node(libxl__gc *gc, void *fdt,
+ uint64_t base, uint32_t irq)
+{
+ int res;
+ gic_interrupt intr;
+ /* Placeholder for virtio@ + a 64-bit number + \0 */
+ char buf[24];
+
+ snprintf(buf, sizeof(buf), "virtio@%"PRIx64, base);
+ res = fdt_begin_node(fdt, buf);
+ if (res) return res;
+
+ res = fdt_property_compat(gc, fdt, 1, "virtio,mmio");
+ if (res) return res;
+
+ res = fdt_property_regs(gc, fdt, GUEST_ROOT_ADDRESS_CELLS, GUEST_ROOT_SIZE_CELLS,
+ 1, base, VIRTIO_MMIO_DEV_SIZE);
+ if (res) return res;
+
+ set_interrupt(intr, irq, 0xf, DT_IRQ_TYPE_EDGE_RISING);
+ res = fdt_property_interrupts(gc, fdt, &intr, 1);
+ if (res) return res;
+
+ res = fdt_property(fdt, "dma-coherent", NULL, 0);
+ if (res) return res;
+
+ res = fdt_end_node(fdt);
+ if (res) return res;
+
+ return 0;
+}
+
static const struct arch_info *get_arch_info(libxl__gc *gc,
const struct xc_dom_image *dom)
{
@@ -988,6 +1107,7 @@ static int libxl__prepare_dtb(libxl__gc *gc, libxl_domain_config *d_config,
size_t fdt_size = 0;
int pfdt_size = 0;
libxl_domain_build_info *const info = &d_config->b_info;
+ unsigned int i;
const libxl_version_info *vers;
const struct arch_info *ainfo;
@@ -1094,6 +1214,13 @@ next_resize:
if (d_config->num_pcidevs)
FDT( make_vpci_node(gc, fdt, ainfo, dom) );
+ for (i = 0; i < d_config->num_disks; i++) {
+ libxl_device_disk *disk = &d_config->disks[i];
+
+ if (disk->virtio)
+ FDT( make_virtio_mmio_node(gc, fdt, disk->base, disk->irq) );
+ }
+
if (pfdt)
FDT( copy_partial_fdt(gc, fdt, pfdt) );
diff --git a/xen/include/public/arch-arm.h b/xen/include/public/arch-arm.h
index 94b3151..6dc55df 100644
--- a/xen/include/public/arch-arm.h
+++ b/xen/include/public/arch-arm.h
@@ -398,6 +398,10 @@ typedef uint64_t xen_callback_t;
/* Physical Address Space */
+/* Virtio MMIO mappings */
+#define GUEST_VIRTIO_MMIO_BASE xen_mk_ullong(0x02000000)
+#define GUEST_VIRTIO_MMIO_SIZE xen_mk_ullong(0x00100000)
+
/*
* vGIC mappings: Only one set of mapping is used by the guest.
* Therefore they can overlap.
@@ -484,6 +488,9 @@ typedef uint64_t xen_callback_t;
#define GUEST_VPL011_SPI 32
+#define GUEST_VIRTIO_MMIO_SPI_FIRST 33
+#define GUEST_VIRTIO_MMIO_SPI_LAST 43
+
/* PSCI functions */
#define PSCI_cpu_suspend 0
#define PSCI_cpu_off 1
--
2.7.4
^ permalink raw reply related [flat|nested] 20+ messages in thread
* RE: [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm
2021-12-08 16:59 ` [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm Oleksandr Tyshchenko
@ 2021-12-09 6:03 ` Jiamei Xie
2021-12-09 6:34 ` Henry Wang
1 sibling, 0 replies; 20+ messages in thread
From: Jiamei Xie @ 2021-12-09 6:03 UTC (permalink / raw)
To: Oleksandr Tyshchenko, xen-devel
Cc: Julien Grall, Wei Liu, Anthony PERARD, Juergen Gross,
Stefano Stabellini, Julien Grall, Volodymyr Babchuk,
Bertrand Marquis, Oleksandr Tyshchenko
> -----Original Message-----
> From: Xen-devel <xen-devel-bounces@lists.xenproject.org> On Behalf Of
> Oleksandr Tyshchenko
> Sent: 2021年12月9日 1:00
> To: xen-devel@lists.xenproject.org
> Cc: Julien Grall <Julien.Grall@arm.com>; Wei Liu <wl@xen.org>; Anthony
> PERARD <anthony.perard@citrix.com>; Juergen Gross <jgross@suse.com>;
> Stefano Stabellini <sstabellini@kernel.org>; Julien Grall <julien@xen.org>;
> Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>; Bertrand Marquis
> <Bertrand.Marquis@arm.com>; Oleksandr Tyshchenko
> <oleksandr_tyshchenko@epam.com>
> Subject: [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm
>
> From: Julien Grall <julien.grall@arm.com>
>
> This patch introduces helpers to allocate Virtio MMIO params
> (IRQ and memory region) and create specific device node in
> the Guest device-tree with allocated params. In order to deal
> with multiple Virtio devices, reserve corresponding ranges.
> For now, we reserve 1MB for memory regions and 10 SPIs.
>
> As these helpers should be used for every Virtio device attached
> to the Guest, call them for Virtio disk(s).
>
> Please note, with statically allocated Virtio IRQs there is
> a risk of a clash with a physical IRQs of passthrough devices.
> For the first version, it's fine, but we should consider allocating
> the Virtio IRQs automatically. Thankfully, we know in advance which
> IRQs will be used for passthrough to be able to choose non-clashed
> ones.
>
> Signed-off-by: Julien Grall <julien.grall@arm.com>
> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
> ---
> Please note, this is a split/cleanup/hardening of Julien's PoC:
> "Add support for Guest IO forwarding to a device emulator"
>
> Changes RFC -> V1:
> - was squashed with:
> "[RFC PATCH V1 09/12] libxl: Handle virtio-mmio irq in more correct way"
> "[RFC PATCH V1 11/12] libxl: Insert "dma-coherent" property into virtio-
> mmio device node"
> "[RFC PATCH V1 12/12] libxl: Fix duplicate memory node in DT"
> - move VirtIO MMIO #define-s to xen/include/public/arch-arm.h
>
> Changes V1 -> V2:
> - update the author of a patch
>
> Changes V2 -> V3:
> - no changes
>
> Changes V3 -> V4:
> - no changes
>
> Changes V4 -> V5:
> - split the changes, change the order of the patches
> - drop an extra "virtio" configuration option
> - update patch description
> - use CONTAINER_OF instead of own implementation
> - reserve ranges for Virtio MMIO params and put them
> in correct location
> - create helpers to allocate Virtio MMIO params, add
> corresponding sanity-сhecks
> - add comment why MMIO size 0x200 is chosen
> - update debug print
> - drop Wei's T-b
>
> Changes V5 -> V6:
> - rebase on current staging
> ---
> tools/libs/light/libxl_arm.c | 131
> +++++++++++++++++++++++++++++++++++++++++-
> xen/include/public/arch-arm.h | 7 +++
> 2 files changed, 136 insertions(+), 2 deletions(-)
>
> diff --git a/tools/libs/light/libxl_arm.c b/tools/libs/light/libxl_arm.c
> index eef1de0..d475249 100644
> --- a/tools/libs/light/libxl_arm.c
> +++ b/tools/libs/light/libxl_arm.c
> @@ -8,6 +8,56 @@
> #include <assert.h>
> #include <xen/device_tree_defs.h>
>
> +/*
> + * There is no clear requirements for the total size of Virtio MMIO region.
> + * The size of control registers is 0x100 and device-specific configuration
> + * registers starts at the offset 0x100, however it's size depends on the
> device
> + * and the driver. Pick the biggest known size at the moment to cover most
> + * of the devices (also consider allowing the user to configure the size via
> + * config file for the one not conforming with the proposed value).
> + */
> +#define VIRTIO_MMIO_DEV_SIZE xen_mk_ullong(0x200)
> +
> +static uint64_t virtio_mmio_base;
> +static uint32_t virtio_mmio_irq;
> +
> +static void init_virtio_mmio_params(void)
> +{
> + virtio_mmio_base = GUEST_VIRTIO_MMIO_BASE;
> + virtio_mmio_irq = GUEST_VIRTIO_MMIO_SPI_FIRST;
> +}
> +
> +static uint64_t alloc_virtio_mmio_base(libxl__gc *gc)
> +{
> + uint64_t base = virtio_mmio_base;
> +
> + /* Make sure we have enough reserved resources */
> + if ((virtio_mmio_base + VIRTIO_MMIO_DEV_SIZE >
> + GUEST_VIRTIO_MMIO_BASE + GUEST_VIRTIO_MMIO_SIZE)) {
> + LOG(ERROR, "Ran out of reserved range for Virtio MMIO BASE
> 0x%"PRIx64"\n",
> + virtio_mmio_base);
> + return 0;
> + }
> + virtio_mmio_base += VIRTIO_MMIO_DEV_SIZE;
> +
> + return base;
> +}
> +
> +static uint32_t alloc_virtio_mmio_irq(libxl__gc *gc)
> +{
> + uint32_t irq = virtio_mmio_irq;
> +
> + /* Make sure we have enough reserved resources */
> + if (virtio_mmio_irq > GUEST_VIRTIO_MMIO_SPI_LAST) {
> + LOG(ERROR, "Ran out of reserved range for Virtio MMIO IRQ %u\n",
> + virtio_mmio_irq);
> + return 0;
> + }
> + virtio_mmio_irq++;
> +
> + return irq;
> +}
> +
> static const char *gicv_to_string(libxl_gic_version gic_version)
> {
> switch (gic_version) {
> @@ -26,8 +76,8 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
> {
> uint32_t nr_spis = 0;
> unsigned int i;
> - uint32_t vuart_irq;
> - bool vuart_enabled = false;
> + uint32_t vuart_irq, virtio_irq = 0;
> + bool vuart_enabled = false, virtio_enabled = false;
>
> /*
> * If pl011 vuart is enabled then increment the nr_spis to allow allocation
> @@ -39,6 +89,35 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
> vuart_enabled = true;
> }
>
> + /*
> + * Virtio MMIO params are non-unique across the whole system and
> must be
> + * initialized for every new guest.
> + */
> + init_virtio_mmio_params();
> + for (i = 0; i < d_config->num_disks; i++) {
> + libxl_device_disk *disk = &d_config->disks[i];
> +
> + if (disk->virtio) {
> + disk->base = alloc_virtio_mmio_base(gc);
> + if (!disk->base)
> + return ERROR_FAIL;
> +
> + disk->irq = alloc_virtio_mmio_irq(gc);
> + if (!disk->irq)
> + return ERROR_FAIL;
> +
> + if (virtio_irq < disk->irq)
> + virtio_irq = disk->irq;
> + virtio_enabled = true;
> +
> + LOG(DEBUG, "Allocate Virtio MMIO params for Vdev %s: IRQ %u
> BASE 0x%"PRIx64,
> + disk->vdev, disk->irq, disk->base);
> + }
> + }
> +
> + if (virtio_enabled)
> + nr_spis += (virtio_irq - 32) + 1;
> +
> for (i = 0; i < d_config->b_info.num_irqs; i++) {
> uint32_t irq = d_config->b_info.irqs[i];
> uint32_t spi;
> @@ -58,6 +137,13 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
> return ERROR_FAIL;
> }
>
> + /* The same check as for vpl011 */
> + if (virtio_enabled &&
> + (irq >= GUEST_VIRTIO_MMIO_SPI_FIRST && irq <= virtio_irq)) {
> + LOG(ERROR, "Physical IRQ %u conflicting with Virtio MMIO IRQ
> range\n", irq);
> + return ERROR_FAIL;
> + }
> +
> if (irq < 32)
> continue;
>
> @@ -787,6 +873,39 @@ static int make_vpci_node(libxl__gc *gc, void *fdt,
> return 0;
> }
>
> +
> +static int make_virtio_mmio_node(libxl__gc *gc, void *fdt,
> + uint64_t base, uint32_t irq)
> +{
> + int res;
> + gic_interrupt intr;
> + /* Placeholder for virtio@ + a 64-bit number + \0 */
> + char buf[24];
> +
> + snprintf(buf, sizeof(buf), "virtio@%"PRIx64, base);
> + res = fdt_begin_node(fdt, buf);
> + if (res) return res;
> +
> + res = fdt_property_compat(gc, fdt, 1, "virtio,mmio");
> + if (res) return res;
> +
> + res = fdt_property_regs(gc, fdt, GUEST_ROOT_ADDRESS_CELLS,
> GUEST_ROOT_SIZE_CELLS,
> + 1, base, VIRTIO_MMIO_DEV_SIZE);
> + if (res) return res;
> +
> + set_interrupt(intr, irq, 0xf, DT_IRQ_TYPE_EDGE_RISING);
> + res = fdt_property_interrupts(gc, fdt, &intr, 1);
> + if (res) return res;
> +
> + res = fdt_property(fdt, "dma-coherent", NULL, 0);
> + if (res) return res;
> +
> + res = fdt_end_node(fdt);
> + if (res) return res;
> +
> + return 0;
> +}
> +
> static const struct arch_info *get_arch_info(libxl__gc *gc,
> const struct xc_dom_image *dom)
> {
> @@ -988,6 +1107,7 @@ static int libxl__prepare_dtb(libxl__gc *gc,
> libxl_domain_config *d_config,
> size_t fdt_size = 0;
> int pfdt_size = 0;
> libxl_domain_build_info *const info = &d_config->b_info;
> + unsigned int i;
>
> const libxl_version_info *vers;
> const struct arch_info *ainfo;
> @@ -1094,6 +1214,13 @@ next_resize:
> if (d_config->num_pcidevs)
> FDT( make_vpci_node(gc, fdt, ainfo, dom) );
>
> + for (i = 0; i < d_config->num_disks; i++) {
> + libxl_device_disk *disk = &d_config->disks[i];
> +
> + if (disk->virtio)
> + FDT( make_virtio_mmio_node(gc, fdt, disk->base, disk->irq) );
> + }
> +
> if (pfdt)
> FDT( copy_partial_fdt(gc, fdt, pfdt) );
>
> diff --git a/xen/include/public/arch-arm.h b/xen/include/public/arch-arm.h
> index 94b3151..6dc55df 100644
> --- a/xen/include/public/arch-arm.h
> +++ b/xen/include/public/arch-arm.h
> @@ -398,6 +398,10 @@ typedef uint64_t xen_callback_t;
>
> /* Physical Address Space */
>
> +/* Virtio MMIO mappings */
> +#define GUEST_VIRTIO_MMIO_BASE xen_mk_ullong(0x02000000)
> +#define GUEST_VIRTIO_MMIO_SIZE xen_mk_ullong(0x00100000)
> +
> /*
> * vGIC mappings: Only one set of mapping is used by the guest.
> * Therefore they can overlap.
> @@ -484,6 +488,9 @@ typedef uint64_t xen_callback_t;
>
> #define GUEST_VPL011_SPI 32
>
> +#define GUEST_VIRTIO_MMIO_SPI_FIRST 33
> +#define GUEST_VIRTIO_MMIO_SPI_LAST 43
> +
> /* PSCI functions */
> #define PSCI_cpu_suspend 0
> #define PSCI_cpu_off 1
> --
> 2.7.4
>
[Jiamei Xie]
It works fine as before.
Tested-by: Jiamei Xie <Jiamei.xie@arm.com>
Best wishes
Jiamei Xie
^ permalink raw reply [flat|nested] 20+ messages in thread
* RE: [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm
2021-12-08 16:59 ` [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm Oleksandr Tyshchenko
2021-12-09 6:03 ` Jiamei Xie
@ 2021-12-09 6:34 ` Henry Wang
1 sibling, 0 replies; 20+ messages in thread
From: Henry Wang @ 2021-12-09 6:34 UTC (permalink / raw)
To: Oleksandr Tyshchenko, xen-devel
Cc: Julien Grall, Wei Liu, Anthony PERARD, Juergen Gross,
Stefano Stabellini, Julien Grall, Volodymyr Babchuk,
Bertrand Marquis, Oleksandr Tyshchenko
Hi Oleksandr,
> -----Original Message-----
> From: Xen-devel <xen-devel-bounces@lists.xenproject.org> On Behalf Of
> Oleksandr Tyshchenko
> Sent: Thursday, December 9, 2021 1:00 AM
> To: xen-devel@lists.xenproject.org
> Cc: Julien Grall <Julien.Grall@arm.com>; Wei Liu <wl@xen.org>; Anthony
> PERARD <anthony.perard@citrix.com>; Juergen Gross <jgross@suse.com>;
> Stefano Stabellini <sstabellini@kernel.org>; Julien Grall <julien@xen.org>;
> Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>; Bertrand Marquis
> <Bertrand.Marquis@arm.com>; Oleksandr Tyshchenko
> <oleksandr_tyshchenko@epam.com>
> Subject: [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm
>
> From: Julien Grall <julien.grall@arm.com>
>
> This patch introduces helpers to allocate Virtio MMIO params
> (IRQ and memory region) and create specific device node in
> the Guest device-tree with allocated params. In order to deal
> with multiple Virtio devices, reserve corresponding ranges.
> For now, we reserve 1MB for memory regions and 10 SPIs.
>
> As these helpers should be used for every Virtio device attached
> to the Guest, call them for Virtio disk(s).
>
> Please note, with statically allocated Virtio IRQs there is
> a risk of a clash with a physical IRQs of passthrough devices.
> For the first version, it's fine, but we should consider allocating
> the Virtio IRQs automatically. Thankfully, we know in advance which
> IRQs will be used for passthrough to be able to choose non-clashed
> ones.
>
> Signed-off-by: Julien Grall <julien.grall@arm.com>
> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
> ---
> Please note, this is a split/cleanup/hardening of Julien's PoC:
> "Add support for Guest IO forwarding to a device emulator"
>
> Changes RFC -> V1:
> - was squashed with:
> "[RFC PATCH V1 09/12] libxl: Handle virtio-mmio irq in more correct way"
> "[RFC PATCH V1 11/12] libxl: Insert "dma-coherent" property into virtio-
> mmio device node"
> "[RFC PATCH V1 12/12] libxl: Fix duplicate memory node in DT"
> - move VirtIO MMIO #define-s to xen/include/public/arch-arm.h
>
> Changes V1 -> V2:
> - update the author of a patch
>
> Changes V2 -> V3:
> - no changes
>
> Changes V3 -> V4:
> - no changes
>
> Changes V4 -> V5:
> - split the changes, change the order of the patches
> - drop an extra "virtio" configuration option
> - update patch description
> - use CONTAINER_OF instead of own implementation
> - reserve ranges for Virtio MMIO params and put them
> in correct location
> - create helpers to allocate Virtio MMIO params, add
> corresponding sanity-сhecks
> - add comment why MMIO size 0x200 is chosen
> - update debug print
> - drop Wei's T-b
>
> Changes V5 -> V6:
> - rebase on current staging
> ---
> tools/libs/light/libxl_arm.c | 131
> +++++++++++++++++++++++++++++++++++++++++-
> xen/include/public/arch-arm.h | 7 +++
> 2 files changed, 136 insertions(+), 2 deletions(-)
>
> diff --git a/tools/libs/light/libxl_arm.c b/tools/libs/light/libxl_arm.c
> index eef1de0..d475249 100644
> --- a/tools/libs/light/libxl_arm.c
> +++ b/tools/libs/light/libxl_arm.c
> @@ -8,6 +8,56 @@
> #include <assert.h>
> #include <xen/device_tree_defs.h>
>
> +/*
> + * There is no clear requirements for the total size of Virtio MMIO region.
> + * The size of control registers is 0x100 and device-specific configuration
> + * registers starts at the offset 0x100, however it's size depends on the
> device
> + * and the driver. Pick the biggest known size at the moment to cover most
> + * of the devices (also consider allowing the user to configure the size via
> + * config file for the one not conforming with the proposed value).
> + */
> +#define VIRTIO_MMIO_DEV_SIZE xen_mk_ullong(0x200)
> +
> +static uint64_t virtio_mmio_base;
> +static uint32_t virtio_mmio_irq;
> +
> +static void init_virtio_mmio_params(void)
> +{
> + virtio_mmio_base = GUEST_VIRTIO_MMIO_BASE;
> + virtio_mmio_irq = GUEST_VIRTIO_MMIO_SPI_FIRST;
> +}
> +
> +static uint64_t alloc_virtio_mmio_base(libxl__gc *gc)
> +{
> + uint64_t base = virtio_mmio_base;
> +
> + /* Make sure we have enough reserved resources */
> + if ((virtio_mmio_base + VIRTIO_MMIO_DEV_SIZE >
> + GUEST_VIRTIO_MMIO_BASE + GUEST_VIRTIO_MMIO_SIZE)) {
> + LOG(ERROR, "Ran out of reserved range for Virtio MMIO BASE
> 0x%"PRIx64"\n",
> + virtio_mmio_base);
> + return 0;
> + }
> + virtio_mmio_base += VIRTIO_MMIO_DEV_SIZE;
> +
> + return base;
> +}
> +
> +static uint32_t alloc_virtio_mmio_irq(libxl__gc *gc)
> +{
> + uint32_t irq = virtio_mmio_irq;
> +
> + /* Make sure we have enough reserved resources */
> + if (virtio_mmio_irq > GUEST_VIRTIO_MMIO_SPI_LAST) {
> + LOG(ERROR, "Ran out of reserved range for Virtio MMIO IRQ %u\n",
> + virtio_mmio_irq);
> + return 0;
> + }
> + virtio_mmio_irq++;
> +
> + return irq;
> +}
> +
> static const char *gicv_to_string(libxl_gic_version gic_version)
> {
> switch (gic_version) {
> @@ -26,8 +76,8 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
> {
> uint32_t nr_spis = 0;
> unsigned int i;
> - uint32_t vuart_irq;
> - bool vuart_enabled = false;
> + uint32_t vuart_irq, virtio_irq = 0;
> + bool vuart_enabled = false, virtio_enabled = false;
>
> /*
> * If pl011 vuart is enabled then increment the nr_spis to allow allocation
> @@ -39,6 +89,35 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
> vuart_enabled = true;
> }
>
> + /*
> + * Virtio MMIO params are non-unique across the whole system and
> must be
> + * initialized for every new guest.
> + */
> + init_virtio_mmio_params();
> + for (i = 0; i < d_config->num_disks; i++) {
> + libxl_device_disk *disk = &d_config->disks[i];
> +
> + if (disk->virtio) {
> + disk->base = alloc_virtio_mmio_base(gc);
> + if (!disk->base)
> + return ERROR_FAIL;
> +
> + disk->irq = alloc_virtio_mmio_irq(gc);
> + if (!disk->irq)
> + return ERROR_FAIL;
> +
> + if (virtio_irq < disk->irq)
> + virtio_irq = disk->irq;
> + virtio_enabled = true;
> +
> + LOG(DEBUG, "Allocate Virtio MMIO params for Vdev %s: IRQ %u
> BASE 0x%"PRIx64,
> + disk->vdev, disk->irq, disk->base);
> + }
> + }
> +
> + if (virtio_enabled)
> + nr_spis += (virtio_irq - 32) + 1;
> +
> for (i = 0; i < d_config->b_info.num_irqs; i++) {
> uint32_t irq = d_config->b_info.irqs[i];
> uint32_t spi;
> @@ -58,6 +137,13 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc,
> return ERROR_FAIL;
> }
>
> + /* The same check as for vpl011 */
> + if (virtio_enabled &&
> + (irq >= GUEST_VIRTIO_MMIO_SPI_FIRST && irq <= virtio_irq)) {
> + LOG(ERROR, "Physical IRQ %u conflicting with Virtio MMIO IRQ
> range\n", irq);
> + return ERROR_FAIL;
> + }
> +
> if (irq < 32)
> continue;
>
> @@ -787,6 +873,39 @@ static int make_vpci_node(libxl__gc *gc, void *fdt,
> return 0;
> }
>
> +
> +static int make_virtio_mmio_node(libxl__gc *gc, void *fdt,
> + uint64_t base, uint32_t irq)
> +{
> + int res;
> + gic_interrupt intr;
> + /* Placeholder for virtio@ + a 64-bit number + \0 */
> + char buf[24];
> +
> + snprintf(buf, sizeof(buf), "virtio@%"PRIx64, base);
> + res = fdt_begin_node(fdt, buf);
> + if (res) return res;
> +
> + res = fdt_property_compat(gc, fdt, 1, "virtio,mmio");
> + if (res) return res;
> +
> + res = fdt_property_regs(gc, fdt, GUEST_ROOT_ADDRESS_CELLS,
> GUEST_ROOT_SIZE_CELLS,
> + 1, base, VIRTIO_MMIO_DEV_SIZE);
> + if (res) return res;
> +
> + set_interrupt(intr, irq, 0xf, DT_IRQ_TYPE_EDGE_RISING);
> + res = fdt_property_interrupts(gc, fdt, &intr, 1);
> + if (res) return res;
> +
> + res = fdt_property(fdt, "dma-coherent", NULL, 0);
> + if (res) return res;
> +
> + res = fdt_end_node(fdt);
> + if (res) return res;
> +
> + return 0;
> +}
> +
> static const struct arch_info *get_arch_info(libxl__gc *gc,
> const struct xc_dom_image *dom)
> {
> @@ -988,6 +1107,7 @@ static int libxl__prepare_dtb(libxl__gc *gc,
> libxl_domain_config *d_config,
> size_t fdt_size = 0;
> int pfdt_size = 0;
> libxl_domain_build_info *const info = &d_config->b_info;
> + unsigned int i;
>
> const libxl_version_info *vers;
> const struct arch_info *ainfo;
> @@ -1094,6 +1214,13 @@ next_resize:
> if (d_config->num_pcidevs)
> FDT( make_vpci_node(gc, fdt, ainfo, dom) );
>
> + for (i = 0; i < d_config->num_disks; i++) {
> + libxl_device_disk *disk = &d_config->disks[i];
> +
> + if (disk->virtio)
> + FDT( make_virtio_mmio_node(gc, fdt, disk->base, disk->irq) );
> + }
> +
> if (pfdt)
> FDT( copy_partial_fdt(gc, fdt, pfdt) );
>
> diff --git a/xen/include/public/arch-arm.h b/xen/include/public/arch-arm.h
> index 94b3151..6dc55df 100644
> --- a/xen/include/public/arch-arm.h
> +++ b/xen/include/public/arch-arm.h
> @@ -398,6 +398,10 @@ typedef uint64_t xen_callback_t;
>
> /* Physical Address Space */
>
> +/* Virtio MMIO mappings */
> +#define GUEST_VIRTIO_MMIO_BASE xen_mk_ullong(0x02000000)
> +#define GUEST_VIRTIO_MMIO_SIZE xen_mk_ullong(0x00100000)
> +
> /*
> * vGIC mappings: Only one set of mapping is used by the guest.
> * Therefore they can overlap.
> @@ -484,6 +488,9 @@ typedef uint64_t xen_callback_t;
>
> #define GUEST_VPL011_SPI 32
>
> +#define GUEST_VIRTIO_MMIO_SPI_FIRST 33
> +#define GUEST_VIRTIO_MMIO_SPI_LAST 43
> +
> /* PSCI functions */
> #define PSCI_cpu_suspend 0
> #define PSCI_cpu_off 1
> --
> 2.7.4
>
Reviewed-by: Henry Wang <Henry.Wang@arm.com>
Kind regards,
Henry
^ permalink raw reply [flat|nested] 20+ messages in thread
* RE: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-08 16:59 ` [PATCH V6 1/2] libxl: Add support for Virtio disk configuration Oleksandr Tyshchenko
@ 2021-12-09 6:50 ` Jiamei Xie
2021-12-14 16:03 ` Anthony PERARD
1 sibling, 0 replies; 20+ messages in thread
From: Jiamei Xie @ 2021-12-09 6:50 UTC (permalink / raw)
To: Oleksandr Tyshchenko, xen-devel
Cc: Oleksandr Tyshchenko, Wei Liu, George Dunlap, Nick Rosbrook,
Anthony PERARD, Juergen Gross, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
> -----Original Message-----
> From: Xen-devel <xen-devel-bounces@lists.xenproject.org> On Behalf Of
> Oleksandr Tyshchenko
> Sent: 2021年12月9日 1:00
> To: xen-devel@lists.xenproject.org
> Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>; Wei Liu
> <wl@xen.org>; George Dunlap <george.dunlap@citrix.com>; Nick Rosbrook
> <rosbrookn@ainfosec.com>; Anthony PERARD <anthony.perard@citrix.com>;
> Juergen Gross <jgross@suse.com>; Stefano Stabellini
> <sstabellini@kernel.org>; Julien Grall <julien@xen.org>; Volodymyr Babchuk
> <Volodymyr_Babchuk@epam.com>; Bertrand Marquis
> <Bertrand.Marquis@arm.com>
> Subject: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
>
> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>
> This patch adds basic support for configuring and assisting virtio-disk
> backend (emualator) which is intended to run out of Qemu and could be
> run in any domain.
> Although the Virtio block device is quite different from traditional
> Xen PV block device (vbd) from the toolstack point of view:
> - as the frontend is virtio-blk which is not a Xenbus driver, nothing
> written to Xenstore are fetched by the frontend (the vdev is not
> passed to the frontend)
> - the ring-ref/event-channel are not used for the backend<->frontend
> communication, the proposed IPC for Virtio is IOREQ/DM
> it is still a "block device" and ought to be integrated in existing
> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
> logic to deal with Virtio devices as well.
>
> Besides introducing new disk backend type (LIBXL_DISK_BACKEND_VIRTIO)
> introduce new device kind (LIBXL__DEVICE_KIND_VIRTIO_DISK) as current
> one (LIBXL__DEVICE_KIND_VBD) doesn't fit into Virtio disk model.
>
> In order to inform the toolstack that Virtio disk needs to be used
> extend "disk" configuration by introducing new "virtio" flag.
> An example of domain configuration:
> disk = [ 'backend=DomD, phy:/dev/mmcblk1p3, xvda1, rw, virtio' ]
>
> Please note, this patch is not enough for virtio-disk to work
> on Xen (Arm), as for every Virtio device (including disk) we need
> to allocate Virtio MMIO params (IRQ and memory region) and pass
> them to the backend, also update Guest device-tree. The subsequent
> patch will add these missing bits. For the current patch,
> the default "irq" and "base" are just written to the Xenstore.
>
> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>
> ---
> Changes RFC -> V1:
> - no changes
>
> Changes V1 -> V2:
> - rebase according to the new location of libxl_virtio_disk.c
>
> Changes V2 -> V3:
> - no changes
>
> Changes V3 -> V4:
> - rebase according to the new argument for DEFINE_DEVICE_TYPE_STRUCT
>
> Changes V4 -> V5:
> - split the changes, change the order of the patches
> - update patch description
> - don't introduce new "vdisk" configuration option with own parsing logic,
> re-use Xen PV block "disk" parsing/configuration logic for the virtio-disk
> - introduce "virtio" flag and document it's usage
> - add LIBXL_HAVE_DEVICE_DISK_VIRTIO
> - update libxlu_disk_l.[ch]
> - drop num_disks variable/MAX_VIRTIO_DISKS
> - drop Wei's T-b
>
> Changes V5 -> V6:
> - rebase on current staging
> - use "%"PRIu64 instead of %lu for disk->base in device_disk_add()
> - update *.gen.go files
> ---
> docs/man/xl-disk-configuration.5.pod.in | 27 +
> tools/golang/xenlight/helpers.gen.go | 6 +
> tools/golang/xenlight/types.gen.go | 4 +
> tools/include/libxl.h | 6 +
> tools/libs/light/libxl_device.c | 38 +-
> tools/libs/light/libxl_disk.c | 99 +++-
> tools/libs/light/libxl_types.idl | 4 +
> tools/libs/light/libxl_types_internal.idl | 1 +
> tools/libs/light/libxl_utils.c | 2 +
> tools/libs/util/libxlu_disk_l.c | 881 +++++++++++++++---------------
> tools/libs/util/libxlu_disk_l.h | 2 +-
> tools/libs/util/libxlu_disk_l.l | 1 +
> tools/xl/xl_block.c | 11 +
> 13 files changed, 636 insertions(+), 446 deletions(-)
>
> diff --git a/docs/man/xl-disk-configuration.5.pod.in b/docs/man/xl-disk-
> configuration.5.pod.in
> index 71d0e86..9cc189f 100644
> --- a/docs/man/xl-disk-configuration.5.pod.in
> +++ b/docs/man/xl-disk-configuration.5.pod.in
> @@ -344,8 +344,35 @@ can be used to disable "hole punching" for file
> based backends which
> were intentionally created non-sparse to avoid fragmentation of the
> file.
>
> +=item B<virtio>
> +
> +=over 4
> +
> +=item Description
> +
> +Enables experimental Virtio support for disk
> +
> +=item Supported values
> +
> +absent, present
> +
> +=item Mandatory
> +
> +No
> +
> +=item Default value
> +
> +absent
> +
> =back
>
> +Besides forcing toolstack to use specific Xen Virtio backend implementation
> +(for example, virtio-disk), this also affects the guest's view of the device
> +and requires virtio-blk driver to be used.
> +Please note, the virtual device (vdev) is not passed to the guest in that case,
> +but it still must be specified for the internal purposes.
> +
> +=back
>
> =head1 COLO Parameters
>
> diff --git a/tools/golang/xenlight/helpers.gen.go
> b/tools/golang/xenlight/helpers.gen.go
> index b746ff1..787e3ba 100644
> --- a/tools/golang/xenlight/helpers.gen.go
> +++ b/tools/golang/xenlight/helpers.gen.go
> @@ -1751,6 +1751,9 @@ x.DirectIoSafe = bool(xc.direct_io_safe)
> if err := x.DiscardEnable.fromC(&xc.discard_enable);err != nil {
> return fmt.Errorf("converting field DiscardEnable: %v", err)
> }
> +x.Virtio = bool(xc.virtio)
> +x.Irq = uint32(xc.irq)
> +x.Base = uint64(xc.base)
> if err := x.ColoEnable.fromC(&xc.colo_enable);err != nil {
> return fmt.Errorf("converting field ColoEnable: %v", err)
> }
> @@ -1788,6 +1791,9 @@ xc.direct_io_safe = C.bool(x.DirectIoSafe)
> if err := x.DiscardEnable.toC(&xc.discard_enable); err != nil {
> return fmt.Errorf("converting field DiscardEnable: %v", err)
> }
> +xc.virtio = C.bool(x.Virtio)
> +xc.irq = C.uint32_t(x.Irq)
> +xc.base = C.uint64_t(x.Base)
> if err := x.ColoEnable.toC(&xc.colo_enable); err != nil {
> return fmt.Errorf("converting field ColoEnable: %v", err)
> }
> diff --git a/tools/golang/xenlight/types.gen.go
> b/tools/golang/xenlight/types.gen.go
> index b1e84d5..1d6868a 100644
> --- a/tools/golang/xenlight/types.gen.go
> +++ b/tools/golang/xenlight/types.gen.go
> @@ -99,6 +99,7 @@ DiskBackendUnknown DiskBackend = 0
> DiskBackendPhy DiskBackend = 1
> DiskBackendTap DiskBackend = 2
> DiskBackendQdisk DiskBackend = 3
> +DiskBackendVirtio DiskBackend = 4
> )
>
> type NicType int
> @@ -643,6 +644,9 @@ Readwrite int
> IsCdrom int
> DirectIoSafe bool
> DiscardEnable Defbool
> +Virtio bool
> +Irq uint32
> +Base uint64
> ColoEnable Defbool
> ColoRestoreEnable Defbool
> ColoHost string
> diff --git a/tools/include/libxl.h b/tools/include/libxl.h
> index 2bbbd21..1ea7475 100644
> --- a/tools/include/libxl.h
> +++ b/tools/include/libxl.h
> @@ -528,6 +528,12 @@
> #define LIBXL_HAVE_MAX_GRANT_VERSION 1
>
> /*
> + * LIBXL_HAVE_DEVICE_DISK_VIRTIO indicates that a 'virtio' field
> + * (of boolean type) is present in libxl_device_disk.
> + */
> +#define LIBXL_HAVE_DEVICE_DISK_VIRTIO 1
> +
> +/*
> * libxl ABI compatibility
> *
> * The only guarantee which libxl makes regarding ABI compatibility
> diff --git a/tools/libs/light/libxl_device.c b/tools/libs/light/libxl_device.c
> index 36c4e41..7c8cb53 100644
> --- a/tools/libs/light/libxl_device.c
> +++ b/tools/libs/light/libxl_device.c
> @@ -292,6 +292,9 @@ static int disk_try_backend(disk_try_backend_args *a,
> /* returns 0 (ie, DISK_BACKEND_UNKNOWN) on failure, or
> * backend on success */
>
> + if (a->disk->virtio && backend != LIBXL_DISK_BACKEND_VIRTIO)
> + goto bad_virtio;
> +
> switch (backend) {
> case LIBXL_DISK_BACKEND_PHY:
> if (a->disk->format != LIBXL_DISK_FORMAT_RAW) {
> @@ -329,6 +332,29 @@ static int disk_try_backend(disk_try_backend_args
> *a,
> if (a->disk->script) goto bad_script;
> return backend;
>
> + case LIBXL_DISK_BACKEND_VIRTIO:
> + if (a->disk->format != LIBXL_DISK_FORMAT_RAW)
> + goto bad_format;
> +
> + if (a->disk->script)
> + goto bad_script;
> +
> + if (libxl_defbool_val(a->disk->colo_enable))
> + goto bad_colo;
> +
> + if (a->disk->backend_domid != LIBXL_TOOLSTACK_DOMID) {
> + LOG(DEBUG, "Disk vdev=%s, is using a storage driver domain, "
> + "skipping physical device check", a->disk->vdev);
> + return backend;
> + }
> +
> + if (libxl__try_phy_backend(a->stab.st_mode))
> + return backend;
> +
> + LOG(DEBUG, "Disk vdev=%s, backend virtio unsuitable as phys path not
> a "
> + "block device", a->disk->vdev);
> + return 0;
> +
> default:
> LOG(DEBUG, "Disk vdev=%s, backend %d unknown", a->disk->vdev,
> backend);
> return 0;
> @@ -352,6 +378,11 @@ static int disk_try_backend(disk_try_backend_args
> *a,
> LOG(DEBUG, "Disk vdev=%s, backend %s not compatible with colo",
> a->disk->vdev, libxl_disk_backend_to_string(backend));
> return 0;
> +
> + bad_virtio:
> + LOG(DEBUG, "Disk vdev=%s, backend %s not compatible with virtio",
> + a->disk->vdev, libxl_disk_backend_to_string(backend));
> + return 0;
> }
>
> int libxl__backendpath_parse_domid(libxl__gc *gc, const char *be_path,
> @@ -392,7 +423,8 @@ int libxl__device_disk_set_backend(libxl__gc *gc,
> libxl_device_disk *disk) {
> }
> memset(&a.stab, 0, sizeof(a.stab));
> } else if ((disk->backend == LIBXL_DISK_BACKEND_UNKNOWN ||
> - disk->backend == LIBXL_DISK_BACKEND_PHY) &&
> + disk->backend == LIBXL_DISK_BACKEND_PHY ||
> + disk->backend == LIBXL_DISK_BACKEND_VIRTIO) &&
> disk->backend_domid == LIBXL_TOOLSTACK_DOMID &&
> !disk->script) {
> if (stat(disk->pdev_path, &a.stab)) {
> @@ -408,7 +440,8 @@ int libxl__device_disk_set_backend(libxl__gc *gc,
> libxl_device_disk *disk) {
> ok=
> disk_try_backend(&a, LIBXL_DISK_BACKEND_PHY) ?:
> disk_try_backend(&a, LIBXL_DISK_BACKEND_QDISK) ?:
> - disk_try_backend(&a, LIBXL_DISK_BACKEND_TAP);
> + disk_try_backend(&a, LIBXL_DISK_BACKEND_TAP) ?:
> + disk_try_backend(&a, LIBXL_DISK_BACKEND_VIRTIO);
> if (ok)
> LOG(DEBUG, "Disk vdev=%s, using backend %s",
> disk->vdev,
> @@ -441,6 +474,7 @@ char
> *libxl__device_disk_string_of_backend(libxl_disk_backend backend)
> case LIBXL_DISK_BACKEND_QDISK: return "qdisk";
> case LIBXL_DISK_BACKEND_TAP: return "phy";
> case LIBXL_DISK_BACKEND_PHY: return "phy";
> + case LIBXL_DISK_BACKEND_VIRTIO: return "virtio_disk";
> default: return NULL;
> }
> }
> diff --git a/tools/libs/light/libxl_disk.c b/tools/libs/light/libxl_disk.c
> index 93936d0..912b3f5 100644
> --- a/tools/libs/light/libxl_disk.c
> +++ b/tools/libs/light/libxl_disk.c
> @@ -174,6 +174,16 @@ static int libxl__device_disk_setdefault(libxl__gc *gc,
> uint32_t domid,
> disk->backend = LIBXL_DISK_BACKEND_QDISK;
> }
>
> + /* Force virtio_disk backend for Virtio devices */
> + if (disk->virtio) {
> + if (!(disk->backend == LIBXL_DISK_BACKEND_VIRTIO ||
> + disk->backend == LIBXL_DISK_BACKEND_UNKNOWN)) {
> + LOGD(ERROR, domid, "Backend for Virtio devices on must be
> virtio_disk");
> + return ERROR_FAIL;
> + }
> + disk->backend = LIBXL_DISK_BACKEND_VIRTIO;
> + }
> +
> rc = libxl__device_disk_set_backend(gc, disk);
> return rc;
> }
> @@ -204,6 +214,9 @@ static int libxl__device_from_disk(libxl__gc *gc,
> uint32_t domid,
> case LIBXL_DISK_BACKEND_QDISK:
> device->backend_kind = LIBXL__DEVICE_KIND_QDISK;
> break;
> + case LIBXL_DISK_BACKEND_VIRTIO:
> + device->backend_kind = LIBXL__DEVICE_KIND_VIRTIO_DISK;
> + break;
> default:
> LOGD(ERROR, domid, "Unrecognized disk backend type: %d",
> disk->backend);
> @@ -212,7 +225,8 @@ static int libxl__device_from_disk(libxl__gc *gc,
> uint32_t domid,
>
> device->domid = domid;
> device->devid = devid;
> - device->kind = LIBXL__DEVICE_KIND_VBD;
> + device->kind = disk->backend == LIBXL_DISK_BACKEND_VIRTIO ?
> + LIBXL__DEVICE_KIND_VIRTIO_DISK : LIBXL__DEVICE_KIND_VBD;
>
> return 0;
> }
> @@ -330,7 +344,17 @@ static void device_disk_add(libxl__egc *egc,
> uint32_t domid,
>
> assert(device->backend_kind == LIBXL__DEVICE_KIND_VBD);
> break;
> + case LIBXL_DISK_BACKEND_VIRTIO:
> + dev = disk->pdev_path;
> +
> + flexarray_append(back, "params");
> + flexarray_append(back, dev);
>
> + flexarray_append_pair(back, "base", GCSPRINTF("%"PRIu64, disk-
> >base));
> + flexarray_append_pair(back, "irq", GCSPRINTF("%u", disk->irq));
> +
> + assert(device->backend_kind ==
> LIBXL__DEVICE_KIND_VIRTIO_DISK);
> + break;
> case LIBXL_DISK_BACKEND_TAP:
> LOG(ERROR, "blktap is not supported");
> rc = ERROR_FAIL;
> @@ -532,6 +556,26 @@ static int libxl__disk_from_xenstore(libxl__gc *gc,
> const char *libxl_path,
> }
> libxl_string_to_backend(ctx, tmp, &(disk->backend));
>
> + if (disk->backend == LIBXL_DISK_BACKEND_VIRTIO) {
> + disk->virtio = true;
> +
> + tmp = libxl__xs_read(gc, XBT_NULL,
> + GCSPRINTF("%s/base", libxl_path));
> + if (!tmp) {
> + LOG(ERROR, "Missing xenstore node %s/base", libxl_path);
> + goto cleanup;
> + }
> + disk->base = strtoul(tmp, NULL, 10);
> +
> + tmp = libxl__xs_read(gc, XBT_NULL,
> + GCSPRINTF("%s/irq", libxl_path));
> + if (!tmp) {
> + LOG(ERROR, "Missing xenstore node %s/irq", libxl_path);
> + goto cleanup;
> + }
> + disk->irq = strtoul(tmp, NULL, 10);
> + }
> +
> disk->vdev = xs_read(ctx->xsh, XBT_NULL,
> GCSPRINTF("%s/dev", libxl_path), &len);
> if (!disk->vdev) {
> @@ -575,6 +619,41 @@ cleanup:
> return rc;
> }
>
> +static int libxl_device_disk_get_path(libxl__gc *gc, uint32_t domid,
> + char **path)
> +{
> + const char *dir;
> + int rc;
> +
> + /*
> + * As we don't know exactly what device kind to be used here, guess it
> + * by checking the presence of the corresponding path in Xenstore.
> + * First, try to read path for vbd device (default) and if not exists
> + * read path for virtio_disk device. This will work as long as both Xen PV
> + * and Virtio disk devices are not assigned to the same guest.
> + */
> + *path = GCSPRINTF("%s/device/%s",
> + libxl__xs_libxl_path(gc, domid),
> + libxl__device_kind_to_string(LIBXL__DEVICE_KIND_VBD));
> +
> + rc = libxl__xs_read_checked(gc, XBT_NULL, *path, &dir);
> + if (rc)
> + return rc;
> +
> + if (dir)
> + return 0;
> +
> + *path = GCSPRINTF("%s/device/%s",
> + libxl__xs_libxl_path(gc, domid),
> +
> libxl__device_kind_to_string(LIBXL__DEVICE_KIND_VIRTIO_DISK));
> +
> + rc = libxl__xs_read_checked(gc, XBT_NULL, *path, &dir);
> + if (rc)
> + return rc;
> +
> + return 0;
> +}
> +
> int libxl_vdev_to_device_disk(libxl_ctx *ctx, uint32_t domid,
> const char *vdev, libxl_device_disk *disk)
> {
> @@ -588,10 +667,12 @@ int libxl_vdev_to_device_disk(libxl_ctx *ctx,
> uint32_t domid,
>
> libxl_device_disk_init(disk);
>
> - libxl_path = libxl__domain_device_libxl_path(gc, domid, devid,
> - LIBXL__DEVICE_KIND_VBD);
> + rc = libxl_device_disk_get_path(gc, domid, &libxl_path);
> + if (rc)
> + return rc;
>
> - rc = libxl__disk_from_xenstore(gc, libxl_path, devid, disk);
> + rc = libxl__disk_from_xenstore(gc, GCSPRINTF("%s/%d", libxl_path, devid),
> + devid, disk);
>
> GC_FREE;
> return rc;
> @@ -605,16 +686,19 @@ int libxl_device_disk_getinfo(libxl_ctx *ctx,
> uint32_t domid,
> char *fe_path, *libxl_path;
> char *val;
> int rc;
> + libxl__device_kind kind;
>
> diskinfo->backend = NULL;
>
> diskinfo->devid = libxl__device_disk_dev_number(disk->vdev, NULL, NULL);
>
> - /* tap devices entries in xenstore are written as vbd devices. */
> + /* tap devices entries in xenstore are written as vbd/virtio_disk devices.
> */
> + kind = disk->backend == LIBXL_DISK_BACKEND_VIRTIO ?
> + LIBXL__DEVICE_KIND_VIRTIO_DISK : LIBXL__DEVICE_KIND_VBD;
> fe_path = libxl__domain_device_frontend_path(gc, domid, diskinfo-
> >devid,
> - LIBXL__DEVICE_KIND_VBD);
> + kind);
> libxl_path = libxl__domain_device_libxl_path(gc, domid, diskinfo->devid,
> - LIBXL__DEVICE_KIND_VBD);
> + kind);
> diskinfo->backend = xs_read(ctx->xsh, XBT_NULL,
> GCSPRINTF("%s/backend", libxl_path), NULL);
> if (!diskinfo->backend) {
> @@ -1418,6 +1502,7 @@ LIBXL_DEFINE_DEVICE_LIST(disk)
> #define libxl__device_disk_update_devid NULL
>
> DEFINE_DEVICE_TYPE_STRUCT(disk, VBD, disks,
> + .get_path = libxl_device_disk_get_path,
> .merge = libxl_device_disk_merge,
> .dm_needed = libxl_device_disk_dm_needed,
> .from_xenstore = (device_from_xenstore_fn_t)libxl__disk_from_xenstore,
> diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_types.idl
> index 2a42da2..31e4a15 100644
> --- a/tools/libs/light/libxl_types.idl
> +++ b/tools/libs/light/libxl_types.idl
> @@ -130,6 +130,7 @@ libxl_disk_backend = Enumeration("disk_backend", [
> (1, "PHY"),
> (2, "TAP"),
> (3, "QDISK"),
> + (4, "VIRTIO"),
> ])
>
> libxl_nic_type = Enumeration("nic_type", [
> @@ -704,6 +705,9 @@ libxl_device_disk = Struct("device_disk", [
> ("is_cdrom", integer),
> ("direct_io_safe", bool),
> ("discard_enable", libxl_defbool),
> + ("virtio", bool),
> + ("irq", uint32),
> + ("base", uint64),
> # Note that the COLO configuration settings should be considered unstable.
> # They may change incompatibly in future versions of Xen.
> ("colo_enable", libxl_defbool),
> diff --git a/tools/libs/light/libxl_types_internal.idl
> b/tools/libs/light/libxl_types_internal.idl
> index 3593e21..8f71980 100644
> --- a/tools/libs/light/libxl_types_internal.idl
> +++ b/tools/libs/light/libxl_types_internal.idl
> @@ -32,6 +32,7 @@ libxl__device_kind = Enumeration("device_kind", [
> (14, "PVCALLS"),
> (15, "VSND"),
> (16, "VINPUT"),
> + (17, "VIRTIO_DISK"),
> ])
>
> libxl__console_backend = Enumeration("console_backend", [
> diff --git a/tools/libs/light/libxl_utils.c b/tools/libs/light/libxl_utils.c
> index 4699c4a..fa406de 100644
> --- a/tools/libs/light/libxl_utils.c
> +++ b/tools/libs/light/libxl_utils.c
> @@ -304,6 +304,8 @@ int libxl_string_to_backend(libxl_ctx *ctx, char *s,
> libxl_disk_backend *backend
> *backend = LIBXL_DISK_BACKEND_TAP;
> } else if (!strcmp(s, "qdisk")) {
> *backend = LIBXL_DISK_BACKEND_QDISK;
> + } else if (!strcmp(s, "virtio_disk")) {
> + *backend = LIBXL_DISK_BACKEND_VIRTIO;
> } else if (!strcmp(s, "tap")) {
> p = strchr(s, ':');
> if (!p) {
> diff --git a/tools/libs/util/libxlu_disk_l.c b/tools/libs/util/libxlu_disk_l.c
> index 32d4b74..7abc699 100644
> --- a/tools/libs/util/libxlu_disk_l.c
> +++ b/tools/libs/util/libxlu_disk_l.c
> @@ -549,8 +549,8 @@ static void yynoreturn yy_fatal_error ( const char*
> msg , yyscan_t yyscanner );
> yyg->yy_hold_char = *yy_cp; \
> *yy_cp = '\0'; \
> yyg->yy_c_buf_p = yy_cp;
> -#define YY_NUM_RULES 36
> -#define YY_END_OF_BUFFER 37
> +#define YY_NUM_RULES 37
> +#define YY_END_OF_BUFFER 38
> /* This struct is not used in this scanner,
> but its presence is necessary. */
> struct yy_trans_info
> @@ -558,74 +558,75 @@ struct yy_trans_info
> flex_int32_t yy_verify;
> flex_int32_t yy_nxt;
> };
> -static const flex_int16_t yy_acclist[575] =
> +static const flex_int16_t yy_acclist[583] =
> { 0,
> - 35, 35, 37, 33, 34, 36, 8193, 33, 34, 36,
> - 16385, 8193, 33, 36,16385, 33, 34, 36, 34, 36,
> - 33, 34, 36, 33, 34, 36, 33, 34, 36, 33,
> - 34, 36, 33, 34, 36, 33, 34, 36, 33, 34,
> - 36, 33, 34, 36, 33, 34, 36, 33, 34, 36,
> - 33, 34, 36, 33, 34, 36, 33, 34, 36, 33,
> - 34, 36, 33, 34, 36, 33, 34, 36, 35, 36,
> - 36, 33, 33, 8193, 33, 8193, 33,16385, 8193, 33,
> - 8193, 33, 33, 8224, 33,16416, 33, 33, 33, 33,
> - 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
> -
> - 33, 33, 33, 33, 33, 33, 33, 33, 33, 35,
> - 8193, 33, 8193, 33, 8193, 8224, 33, 8224, 33, 8224,
> - 23, 33, 33, 33, 33, 33, 33, 33, 33, 33,
> - 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
> - 33, 33, 33, 33, 33, 8224, 33, 8224, 33, 8224,
> - 23, 33, 33, 28, 8224, 33,16416, 33, 33, 15,
> - 33, 33, 33, 33, 33, 33, 33, 33, 33, 8217,
> - 8224, 33,16409,16416, 33, 33, 31, 8224, 33,16416,
> - 33, 8216, 8224, 33,16408,16416, 33, 33, 8219, 8224,
> - 33,16411,16416, 33, 33, 33, 33, 33, 28, 8224,
> -
> - 33, 28, 8224, 33, 28, 33, 28, 8224, 33, 3,
> - 33, 15, 33, 33, 33, 33, 33, 30, 8224, 33,
> - 16416, 33, 33, 33, 8217, 8224, 33, 8217, 8224, 33,
> - 8217, 33, 8217, 8224, 33, 33, 31, 8224, 33, 31,
> - 8224, 33, 31, 33, 31, 8224, 8216, 8224, 33, 8216,
> - 8224, 33, 8216, 33, 8216, 8224, 33, 8219, 8224, 33,
> - 8219, 8224, 33, 8219, 33, 8219, 8224, 33, 33, 10,
> - 33, 33, 28, 8224, 33, 28, 8224, 33, 28, 8224,
> - 28, 33, 28, 33, 3, 33, 33, 33, 33, 33,
> - 33, 33, 30, 8224, 33, 30, 8224, 33, 30, 33,
> -
> - 30, 8224, 33, 33, 29, 8224, 33,16416, 8217, 8224,
> - 33, 8217, 8224, 33, 8217, 8224, 8217, 33, 8217, 33,
> - 33, 31, 8224, 33, 31, 8224, 33, 31, 8224, 31,
> - 33, 31, 8216, 8224, 33, 8216, 8224, 33, 8216, 8224,
> - 8216, 33, 8216, 33, 8219, 8224, 33, 8219, 8224, 33,
> - 8219, 8224, 8219, 33, 8219, 33, 33, 10, 23, 10,
> - 7, 33, 33, 33, 33, 33, 33, 33, 13, 33,
> - 30, 8224, 33, 30, 8224, 33, 30, 8224, 30, 33,
> - 30, 2, 33, 29, 8224, 33, 29, 8224, 33, 29,
> - 33, 29, 8224, 16, 33, 33, 11, 33, 22, 10,
> -
> - 10, 23, 7, 23, 7, 33, 8, 33, 33, 33,
> - 33, 6, 33, 13, 33, 2, 23, 2, 33, 29,
> - 8224, 33, 29, 8224, 33, 29, 8224, 29, 33, 29,
> - 16, 33, 33, 11, 23, 11, 26, 8224, 33,16416,
> - 22, 23, 22, 7, 7, 23, 33, 8, 23, 8,
> - 33, 33, 33, 33, 6, 23, 6, 6, 23, 6,
> - 23, 33, 2, 2, 23, 33, 33, 11, 11, 23,
> - 26, 8224, 33, 26, 8224, 33, 26, 33, 26, 8224,
> - 22, 23, 33, 8, 8, 23, 33, 33, 17, 18,
> - 6, 6, 23, 6, 6, 33, 33, 14, 33, 26,
> -
> - 8224, 33, 26, 8224, 33, 26, 8224, 26, 33, 26,
> - 33, 33, 33, 17, 23, 17, 18, 23, 18, 6,
> - 6, 33, 33, 14, 33, 20, 9, 19, 17, 17,
> - 23, 18, 18, 23, 6, 5, 6, 33, 21, 20,
> - 23, 20, 9, 23, 9, 19, 23, 19, 4, 6,
> - 5, 6, 33, 21, 23, 21, 20, 20, 23, 9,
> - 9, 23, 19, 19, 23, 4, 6, 12, 33, 21,
> - 21, 23, 12, 33
> + 36, 36, 38, 34, 35, 37, 8193, 34, 35, 37,
> + 16385, 8193, 34, 37,16385, 34, 35, 37, 35, 37,
> + 34, 35, 37, 34, 35, 37, 34, 35, 37, 34,
> + 35, 37, 34, 35, 37, 34, 35, 37, 34, 35,
> + 37, 34, 35, 37, 34, 35, 37, 34, 35, 37,
> + 34, 35, 37, 34, 35, 37, 34, 35, 37, 34,
> + 35, 37, 34, 35, 37, 34, 35, 37, 36, 37,
> + 37, 34, 34, 8193, 34, 8193, 34,16385, 8193, 34,
> + 8193, 34, 34, 8225, 34,16417, 34, 34, 34, 34,
> + 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
> +
> + 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
> + 36, 8193, 34, 8193, 34, 8193, 8225, 34, 8225, 34,
> + 8225, 24, 34, 34, 34, 34, 34, 34, 34, 34,
> + 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
> + 34, 34, 34, 34, 34, 34, 34, 8225, 34, 8225,
> + 34, 8225, 24, 34, 34, 29, 8225, 34,16417, 34,
> + 34, 16, 34, 34, 34, 34, 34, 34, 34, 34,
> + 34, 8218, 8225, 34,16410,16417, 34, 34, 32, 8225,
> + 34,16417, 34, 8217, 8225, 34,16409,16417, 34, 34,
> + 8220, 8225, 34,16412,16417, 34, 34, 34, 34, 34,
> +
> + 34, 29, 8225, 34, 29, 8225, 34, 29, 34, 29,
> + 8225, 34, 3, 34, 16, 34, 34, 34, 34, 34,
> + 31, 8225, 34,16417, 34, 34, 34, 8218, 8225, 34,
> + 8218, 8225, 34, 8218, 34, 8218, 8225, 34, 34, 32,
> + 8225, 34, 32, 8225, 34, 32, 34, 32, 8225, 8217,
> + 8225, 34, 8217, 8225, 34, 8217, 34, 8217, 8225, 34,
> + 8220, 8225, 34, 8220, 8225, 34, 8220, 34, 8220, 8225,
> + 34, 34, 10, 34, 34, 34, 29, 8225, 34, 29,
> + 8225, 34, 29, 8225, 29, 34, 29, 34, 3, 34,
> + 34, 34, 34, 34, 34, 34, 31, 8225, 34, 31,
> +
> + 8225, 34, 31, 34, 31, 8225, 34, 34, 30, 8225,
> + 34,16417, 8218, 8225, 34, 8218, 8225, 34, 8218, 8225,
> + 8218, 34, 8218, 34, 34, 32, 8225, 34, 32, 8225,
> + 34, 32, 8225, 32, 34, 32, 8217, 8225, 34, 8217,
> + 8225, 34, 8217, 8225, 8217, 34, 8217, 34, 8220, 8225,
> + 34, 8220, 8225, 34, 8220, 8225, 8220, 34, 8220, 34,
> + 34, 10, 24, 10, 15, 34, 7, 34, 34, 34,
> + 34, 34, 34, 34, 13, 34, 31, 8225, 34, 31,
> + 8225, 34, 31, 8225, 31, 34, 31, 2, 34, 30,
> + 8225, 34, 30, 8225, 34, 30, 34, 30, 8225, 17,
> +
> + 34, 34, 11, 34, 23, 10, 10, 24, 15, 34,
> + 7, 24, 7, 34, 8, 34, 34, 34, 34, 6,
> + 34, 13, 34, 2, 24, 2, 34, 30, 8225, 34,
> + 30, 8225, 34, 30, 8225, 30, 34, 30, 17, 34,
> + 34, 11, 24, 11, 27, 8225, 34,16417, 23, 24,
> + 23, 7, 7, 24, 34, 8, 24, 8, 34, 34,
> + 34, 34, 6, 24, 6, 6, 24, 6, 24, 34,
> + 2, 2, 24, 34, 34, 11, 11, 24, 27, 8225,
> + 34, 27, 8225, 34, 27, 34, 27, 8225, 23, 24,
> + 34, 8, 8, 24, 34, 34, 18, 19, 6, 6,
> +
> + 24, 6, 6, 34, 34, 14, 34, 27, 8225, 34,
> + 27, 8225, 34, 27, 8225, 27, 34, 27, 34, 34,
> + 34, 18, 24, 18, 19, 24, 19, 6, 6, 34,
> + 34, 14, 34, 21, 9, 20, 18, 18, 24, 19,
> + 19, 24, 6, 5, 6, 34, 22, 21, 24, 21,
> + 9, 24, 9, 20, 24, 20, 4, 6, 5, 6,
> + 34, 22, 24, 22, 21, 21, 24, 9, 9, 24,
> + 20, 20, 24, 4, 6, 12, 34, 22, 22, 24,
> + 12, 34
> } ;
>
> -static const flex_int16_t yy_accept[356] =
> +static const flex_int16_t yy_accept[362] =
> { 0,
> 1, 1, 1, 2, 3, 4, 7, 12, 16, 19,
> 21, 24, 27, 30, 33, 36, 39, 42, 45, 48,
> @@ -633,39 +634,40 @@ static const flex_int16_t yy_accept[356] =
> 74, 76, 79, 81, 82, 83, 84, 87, 87, 88,
> 89, 90, 91, 92, 93, 94, 95, 96, 97, 98,
> 99, 100, 101, 102, 103, 104, 105, 106, 107, 108,
> - 109, 110, 111, 113, 115, 116, 118, 120, 121, 122,
> + 109, 110, 111, 112, 114, 116, 117, 119, 121, 122,
> 123, 124, 125, 126, 127, 128, 129, 130, 131, 132,
> 133, 134, 135, 136, 137, 138, 139, 140, 141, 142,
> - 143, 144, 145, 146, 148, 150, 151, 152, 153, 154,
> -
> - 158, 159, 160, 162, 163, 164, 165, 166, 167, 168,
> - 169, 170, 175, 176, 177, 181, 182, 187, 188, 189,
> - 194, 195, 196, 197, 198, 199, 202, 205, 207, 209,
> - 210, 212, 214, 215, 216, 217, 218, 222, 223, 224,
> - 225, 228, 231, 233, 235, 236, 237, 240, 243, 245,
> - 247, 250, 253, 255, 257, 258, 261, 264, 266, 268,
> - 269, 270, 271, 272, 273, 276, 279, 281, 283, 284,
> - 285, 287, 288, 289, 290, 291, 292, 293, 296, 299,
> - 301, 303, 304, 305, 309, 312, 315, 317, 319, 320,
> - 321, 322, 325, 328, 330, 332, 333, 336, 339, 341,
> -
> - 343, 344, 345, 348, 351, 353, 355, 356, 357, 358,
> - 360, 361, 362, 363, 364, 365, 366, 367, 368, 369,
> - 371, 374, 377, 379, 381, 382, 383, 384, 387, 390,
> - 392, 394, 396, 397, 398, 399, 400, 401, 403, 405,
> - 406, 407, 408, 409, 410, 411, 412, 413, 414, 416,
> - 418, 419, 420, 423, 426, 428, 430, 431, 433, 434,
> - 436, 437, 441, 443, 444, 445, 447, 448, 450, 451,
> - 452, 453, 454, 455, 457, 458, 460, 462, 463, 464,
> - 466, 467, 468, 469, 471, 474, 477, 479, 481, 483,
> - 484, 485, 487, 488, 489, 490, 491, 492, 494, 495,
> -
> - 496, 497, 498, 500, 503, 506, 508, 510, 511, 512,
> - 513, 514, 516, 517, 519, 520, 521, 522, 523, 524,
> - 526, 527, 528, 529, 530, 532, 533, 535, 536, 538,
> - 539, 540, 542, 543, 545, 546, 548, 549, 551, 553,
> - 554, 556, 557, 558, 560, 561, 563, 564, 566, 568,
> - 570, 571, 573, 575, 575
> + 143, 144, 145, 146, 147, 148, 150, 152, 153, 154,
> +
> + 155, 156, 160, 161, 162, 164, 165, 166, 167, 168,
> + 169, 170, 171, 172, 177, 178, 179, 183, 184, 189,
> + 190, 191, 196, 197, 198, 199, 200, 201, 202, 205,
> + 208, 210, 212, 213, 215, 217, 218, 219, 220, 221,
> + 225, 226, 227, 228, 231, 234, 236, 238, 239, 240,
> + 243, 246, 248, 250, 253, 256, 258, 260, 261, 264,
> + 267, 269, 271, 272, 273, 274, 275, 276, 277, 280,
> + 283, 285, 287, 288, 289, 291, 292, 293, 294, 295,
> + 296, 297, 300, 303, 305, 307, 308, 309, 313, 316,
> + 319, 321, 323, 324, 325, 326, 329, 332, 334, 336,
> +
> + 337, 340, 343, 345, 347, 348, 349, 352, 355, 357,
> + 359, 360, 361, 362, 364, 365, 367, 368, 369, 370,
> + 371, 372, 373, 374, 375, 377, 380, 383, 385, 387,
> + 388, 389, 390, 393, 396, 398, 400, 402, 403, 404,
> + 405, 406, 407, 409, 411, 413, 414, 415, 416, 417,
> + 418, 419, 420, 421, 422, 424, 426, 427, 428, 431,
> + 434, 436, 438, 439, 441, 442, 444, 445, 449, 451,
> + 452, 453, 455, 456, 458, 459, 460, 461, 462, 463,
> + 465, 466, 468, 470, 471, 472, 474, 475, 476, 477,
> + 479, 482, 485, 487, 489, 491, 492, 493, 495, 496,
> +
> + 497, 498, 499, 500, 502, 503, 504, 505, 506, 508,
> + 511, 514, 516, 518, 519, 520, 521, 522, 524, 525,
> + 527, 528, 529, 530, 531, 532, 534, 535, 536, 537,
> + 538, 540, 541, 543, 544, 546, 547, 548, 550, 551,
> + 553, 554, 556, 557, 559, 561, 562, 564, 565, 566,
> + 568, 569, 571, 572, 574, 576, 578, 579, 581, 583,
> + 583
> } ;
>
> static const YY_CHAR yy_ec[256] =
> @@ -708,216 +710,217 @@ static const YY_CHAR yy_meta[35] =
> 1, 1, 1, 1
> } ;
>
> -static const flex_int16_t yy_base[424] =
> +static const flex_int16_t yy_base[430] =
> { 0,
> - 0, 0, 901, 900, 902, 897, 33, 36, 905, 905,
> - 45, 63, 31, 42, 51, 52, 890, 33, 65, 67,
> - 69, 70, 889, 71, 888, 75, 0, 905, 893, 905,
> - 91, 94, 0, 0, 103, 886, 112, 0, 89, 98,
> - 113, 92, 114, 99, 100, 48, 121, 116, 119, 74,
> - 124, 129, 123, 135, 132, 133, 137, 134, 138, 139,
> - 141, 0, 155, 0, 0, 164, 0, 0, 849, 142,
> - 152, 164, 140, 161, 165, 166, 167, 168, 169, 173,
> - 174, 178, 176, 180, 184, 208, 189, 183, 192, 195,
> - 215, 191, 193, 223, 0, 0, 905, 208, 204, 236,
> -
> - 219, 209, 238, 196, 237, 831, 242, 815, 241, 224,
> - 243, 261, 244, 259, 277, 266, 286, 250, 288, 298,
> - 249, 283, 274, 282, 294, 308, 0, 310, 0, 295,
> - 305, 905, 308, 306, 313, 314, 342, 319, 316, 320,
> - 331, 0, 349, 0, 342, 344, 356, 0, 358, 0,
> - 365, 0, 367, 0, 354, 375, 0, 377, 0, 363,
> - 356, 809, 327, 322, 384, 0, 0, 0, 0, 379,
> - 905, 382, 384, 386, 390, 372, 392, 403, 0, 410,
> - 0, 407, 413, 423, 426, 0, 0, 0, 0, 409,
> - 424, 435, 0, 0, 0, 0, 437, 0, 0, 0,
> -
> - 0, 433, 444, 0, 0, 0, 0, 391, 440, 781,
> - 905, 769, 439, 445, 444, 447, 449, 454, 453, 399,
> - 464, 0, 0, 0, 0, 757, 465, 476, 0, 478,
> - 0, 479, 476, 753, 462, 490, 749, 905, 745, 905,
> - 483, 737, 424, 485, 487, 490, 500, 493, 905, 729,
> - 905, 502, 518, 0, 0, 0, 0, 905, 498, 721,
> - 905, 527, 713, 0, 705, 905, 495, 697, 905, 365,
> - 521, 528, 530, 685, 905, 534, 540, 540, 657, 905,
> - 537, 542, 650, 905, 553, 0, 557, 0, 0, 551,
> - 641, 905, 558, 557, 633, 614, 613, 905, 547, 555,
> -
> - 563, 565, 569, 584, 0, 0, 0, 0, 583, 570,
> - 585, 612, 905, 601, 905, 522, 580, 589, 594, 905,
> - 600, 585, 563, 520, 905, 514, 905, 586, 486, 597,
> - 480, 441, 905, 416, 905, 345, 905, 334, 905, 601,
> - 254, 905, 242, 905, 200, 905, 151, 905, 905, 607,
> - 86, 905, 905, 905, 620, 624, 627, 631, 635, 639,
> - 643, 647, 651, 655, 659, 663, 667, 671, 675, 679,
> - 683, 687, 691, 695, 699, 703, 707, 711, 715, 719,
> - 723, 727, 731, 735, 739, 743, 747, 751, 755, 759,
> - 763, 767, 771, 775, 779, 783, 787, 791, 795, 799,
> -
> - 803, 807, 811, 815, 819, 823, 827, 831, 835, 839,
> - 843, 847, 851, 855, 859, 863, 867, 871, 875, 879,
> - 883, 887, 891
> + 0, 0, 912, 911, 913, 908, 33, 36, 916, 916,
> + 45, 63, 31, 42, 51, 52, 901, 33, 65, 67,
> + 69, 70, 900, 71, 899, 77, 0, 916, 904, 916,
> + 93, 96, 0, 0, 105, 897, 114, 0, 91, 100,
> + 115, 94, 116, 101, 102, 48, 74, 118, 121, 123,
> + 78, 128, 131, 137, 124, 125, 133, 135, 136, 140,
> + 142, 141, 0, 163, 0, 0, 166, 0, 0, 902,
> + 143, 146, 163, 164, 166, 167, 149, 169, 170, 175,
> + 179, 176, 182, 177, 184, 192, 212, 193, 186, 196,
> + 187, 219, 201, 150, 199, 227, 0, 0, 916, 209,
> +
> + 212, 243, 224, 213, 245, 223, 198, 895, 231, 894,
> + 244, 230, 243, 261, 255, 259, 279, 266, 288, 275,
> + 291, 301, 268, 284, 298, 301, 285, 302, 311, 0,
> + 314, 0, 311, 318, 916, 312, 317, 246, 232, 342,
> + 320, 325, 323, 349, 0, 351, 0, 344, 349, 360,
> + 0, 363, 0, 367, 0, 370, 0, 330, 377, 0,
> + 379, 0, 365, 358, 899, 368, 329, 331, 381, 0,
> + 0, 0, 0, 381, 916, 383, 385, 387, 391, 397,
> + 393, 409, 0, 411, 0, 412, 414, 424, 427, 0,
> + 0, 0, 0, 422, 425, 436, 0, 0, 0, 0,
> +
> + 438, 0, 0, 0, 0, 434, 445, 0, 0, 0,
> + 0, 440, 442, 898, 916, 400, 897, 443, 448, 449,
> + 451, 453, 458, 457, 413, 469, 0, 0, 0, 0,
> + 896, 469, 480, 0, 482, 0, 483, 480, 895, 489,
> + 497, 894, 916, 916, 851, 916, 490, 839, 478, 492,
> + 494, 497, 507, 501, 916, 823, 916, 509, 525, 0,
> + 0, 0, 0, 916, 505, 811, 916, 534, 783, 0,
> + 771, 916, 518, 759, 916, 523, 528, 538, 540, 755,
> + 916, 511, 540, 549, 751, 916, 544, 547, 747, 916,
> + 560, 0, 562, 0, 0, 555, 739, 916, 484, 561,
> +
> + 731, 723, 715, 916, 449, 566, 564, 566, 576, 578,
> + 0, 0, 0, 0, 584, 574, 586, 707, 916, 699,
> + 916, 581, 587, 590, 597, 916, 687, 659, 652, 643,
> + 916, 635, 916, 597, 616, 599, 614, 604, 916, 600,
> + 916, 541, 916, 467, 916, 603, 455, 916, 404, 916,
> + 385, 916, 328, 916, 916, 609, 203, 916, 916, 916,
> + 622, 626, 629, 633, 637, 641, 645, 649, 653, 657,
> + 661, 665, 669, 673, 677, 681, 685, 689, 693, 697,
> + 701, 705, 709, 713, 717, 721, 725, 729, 733, 737,
> + 741, 745, 749, 753, 757, 761, 765, 769, 773, 777,
> +
> + 781, 785, 789, 793, 797, 801, 805, 809, 813, 817,
> + 821, 825, 829, 833, 837, 841, 845, 849, 853, 857,
> + 861, 865, 869, 873, 877, 881, 885, 889, 893
> } ;
>
> -static const flex_int16_t yy_def[424] =
> +static const flex_int16_t yy_def[430] =
> { 0,
> - 354, 1, 355, 355, 354, 356, 357, 357, 354, 354,
> - 358, 358, 12, 12, 12, 12, 12, 12, 12, 12,
> - 12, 12, 12, 12, 12, 12, 359, 354, 356, 354,
> - 360, 357, 361, 361, 362, 12, 356, 363, 12, 12,
> + 360, 1, 361, 361, 360, 362, 363, 363, 360, 360,
> + 364, 364, 12, 12, 12, 12, 12, 12, 12, 12,
> + 12, 12, 12, 12, 12, 12, 365, 360, 362, 360,
> + 366, 363, 367, 367, 368, 12, 362, 369, 12, 12,
> 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
> 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
> - 12, 359, 360, 361, 361, 364, 365, 365, 354, 12,
> + 12, 12, 365, 366, 367, 367, 370, 371, 371, 360,
> 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
> - 12, 12, 12, 12, 12, 362, 12, 12, 12, 12,
> - 12, 12, 12, 364, 365, 365, 354, 12, 12, 366,
> -
> - 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
> - 12, 367, 86, 86, 368, 12, 369, 12, 12, 370,
> - 12, 12, 12, 12, 12, 371, 372, 366, 372, 12,
> - 12, 354, 86, 12, 12, 12, 373, 12, 12, 12,
> - 374, 375, 367, 375, 86, 86, 376, 377, 368, 377,
> - 378, 379, 369, 379, 12, 380, 381, 370, 381, 12,
> - 12, 382, 12, 12, 371, 372, 372, 383, 383, 12,
> - 354, 86, 86, 86, 12, 12, 12, 384, 385, 373,
> - 385, 12, 12, 386, 374, 375, 375, 387, 387, 86,
> - 86, 376, 377, 377, 388, 388, 378, 379, 379, 389,
> -
> - 389, 12, 380, 381, 381, 390, 390, 12, 12, 391,
> - 354, 392, 86, 12, 86, 86, 86, 12, 86, 12,
> - 384, 385, 385, 393, 393, 394, 86, 395, 396, 386,
> - 396, 86, 86, 397, 12, 398, 391, 354, 399, 354,
> - 86, 400, 12, 86, 86, 86, 401, 86, 354, 402,
> - 354, 86, 395, 396, 396, 403, 403, 354, 86, 404,
> - 354, 405, 406, 406, 399, 354, 86, 407, 354, 12,
> - 86, 86, 86, 408, 354, 408, 408, 86, 402, 354,
> - 86, 86, 404, 354, 409, 410, 405, 410, 406, 86,
> - 407, 354, 12, 86, 411, 412, 408, 354, 408, 408,
> -
> - 86, 86, 86, 409, 410, 410, 413, 413, 86, 12,
> - 86, 414, 354, 415, 354, 408, 408, 86, 86, 354,
> - 416, 417, 418, 414, 354, 415, 354, 408, 408, 86,
> - 419, 420, 354, 421, 354, 422, 354, 408, 354, 86,
> - 423, 354, 420, 354, 421, 354, 422, 354, 354, 86,
> - 423, 354, 354, 0, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> -
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354
> + 12, 12, 12, 12, 12, 12, 368, 12, 12, 12,
> + 12, 12, 12, 12, 12, 370, 371, 371, 360, 12,
> +
> + 12, 372, 12, 12, 12, 12, 12, 12, 12, 12,
> + 12, 12, 12, 373, 87, 87, 374, 12, 375, 12,
> + 12, 376, 12, 12, 12, 12, 12, 12, 377, 378,
> + 372, 378, 12, 12, 360, 87, 12, 12, 12, 379,
> + 12, 12, 12, 380, 381, 373, 381, 87, 87, 382,
> + 383, 374, 383, 384, 385, 375, 385, 12, 386, 387,
> + 376, 387, 12, 12, 388, 12, 12, 12, 377, 378,
> + 378, 389, 389, 12, 360, 87, 87, 87, 12, 12,
> + 12, 390, 391, 379, 391, 12, 12, 392, 380, 381,
> + 381, 393, 393, 87, 87, 382, 383, 383, 394, 394,
> +
> + 384, 385, 385, 395, 395, 12, 386, 387, 387, 396,
> + 396, 12, 12, 397, 360, 12, 398, 87, 12, 87,
> + 87, 87, 12, 87, 12, 390, 391, 391, 399, 399,
> + 400, 87, 401, 402, 392, 402, 87, 87, 403, 12,
> + 404, 397, 360, 360, 405, 360, 87, 406, 12, 87,
> + 87, 87, 407, 87, 360, 408, 360, 87, 401, 402,
> + 402, 409, 409, 360, 87, 410, 360, 411, 412, 412,
> + 405, 360, 87, 413, 360, 12, 87, 87, 87, 414,
> + 360, 414, 414, 87, 408, 360, 87, 87, 410, 360,
> + 415, 416, 411, 416, 412, 87, 413, 360, 12, 87,
> +
> + 417, 418, 414, 360, 414, 414, 87, 87, 87, 415,
> + 416, 416, 419, 419, 87, 12, 87, 420, 360, 421,
> + 360, 414, 414, 87, 87, 360, 422, 423, 424, 420,
> + 360, 421, 360, 414, 414, 87, 425, 426, 360, 427,
> + 360, 428, 360, 414, 360, 87, 429, 360, 426, 360,
> + 427, 360, 428, 360, 360, 87, 429, 360, 360, 0,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> +
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360
> } ;
>
> -static const flex_int16_t yy_nxt[940] =
> +static const flex_int16_t yy_nxt[951] =
> { 0,
> 6, 7, 8, 9, 6, 6, 6, 6, 10, 11,
> 12, 13, 14, 15, 16, 17, 18, 19, 17, 17,
> 17, 17, 20, 17, 21, 22, 23, 24, 25, 17,
> 26, 17, 17, 17, 32, 32, 33, 32, 32, 33,
> 36, 34, 36, 42, 34, 29, 29, 29, 30, 35,
> - 50, 36, 37, 38, 43, 44, 39, 36, 79, 45,
> + 50, 36, 37, 38, 43, 44, 39, 36, 80, 45,
> 36, 36, 40, 29, 29, 29, 30, 35, 46, 48,
> 37, 38, 41, 47, 36, 49, 36, 53, 36, 36,
> - 36, 56, 58, 36, 36, 55, 82, 60, 51, 342,
> - 54, 61, 52, 29, 64, 32, 32, 33, 36, 65,
> -
> - 70, 36, 34, 29, 29, 29, 30, 36, 36, 36,
> - 29, 38, 66, 66, 66, 67, 66, 71, 74, 66,
> - 68, 72, 36, 36, 73, 36, 77, 78, 36, 76,
> - 36, 53, 36, 36, 75, 85, 80, 83, 36, 86,
> - 84, 36, 36, 36, 36, 81, 36, 36, 36, 36,
> - 36, 36, 93, 89, 337, 98, 88, 29, 64, 101,
> - 90, 36, 91, 65, 92, 87, 29, 95, 89, 99,
> - 36, 100, 96, 36, 36, 36, 36, 36, 36, 106,
> - 105, 85, 36, 36, 102, 36, 107, 36, 103, 36,
> - 109, 112, 36, 36, 104, 108, 115, 110, 36, 117,
> -
> - 36, 36, 36, 335, 36, 36, 122, 111, 29, 29,
> - 29, 30, 118, 36, 116, 29, 38, 36, 36, 113,
> - 114, 119, 120, 123, 36, 29, 95, 121, 36, 134,
> - 131, 96, 130, 36, 125, 124, 126, 126, 66, 127,
> - 126, 132, 133, 126, 129, 333, 36, 36, 135, 137,
> - 36, 36, 36, 140, 139, 35, 35, 352, 36, 36,
> - 85, 141, 141, 66, 142, 141, 160, 145, 141, 144,
> - 35, 35, 89, 117, 155, 36, 146, 147, 147, 66,
> - 148, 147, 162, 36, 147, 150, 151, 151, 66, 152,
> - 151, 36, 36, 151, 154, 120, 161, 36, 156, 156,
> -
> - 66, 157, 156, 36, 36, 156, 159, 164, 171, 163,
> - 29, 166, 29, 168, 36, 36, 167, 170, 169, 35,
> - 35, 172, 36, 36, 173, 36, 213, 184, 36, 36,
> - 175, 36, 174, 29, 186, 212, 36, 349, 183, 187,
> - 177, 176, 178, 178, 66, 179, 178, 182, 348, 178,
> - 181, 29, 188, 35, 35, 35, 35, 189, 29, 193,
> - 29, 195, 190, 36, 194, 36, 196, 29, 198, 29,
> - 200, 191, 36, 199, 36, 201, 219, 29, 204, 29,
> - 206, 36, 202, 205, 209, 207, 29, 166, 36, 293,
> - 208, 214, 167, 35, 35, 35, 35, 35, 35, 36,
> -
> - 36, 36, 249, 218, 220, 29, 222, 216, 36, 217,
> - 235, 223, 29, 224, 215, 226, 36, 227, 225, 346,
> - 35, 35, 36, 228, 228, 66, 229, 228, 29, 186,
> - 228, 231, 232, 36, 187, 233, 35, 29, 193, 29,
> - 198, 234, 36, 194, 344, 199, 29, 204, 236, 36,
> - 35, 241, 205, 242, 36, 35, 35, 270, 35, 35,
> - 35, 35, 247, 36, 35, 35, 29, 222, 244, 262,
> - 248, 36, 223, 243, 245, 246, 35, 252, 29, 254,
> - 29, 256, 258, 342, 255, 259, 257, 35, 35, 339,
> - 35, 35, 69, 264, 35, 35, 35, 35, 35, 35,
> -
> - 267, 35, 35, 275, 35, 35, 35, 35, 271, 35,
> - 35, 276, 277, 35, 35, 272, 278, 315, 273, 281,
> - 29, 254, 290, 313, 282, 275, 255, 285, 285, 66,
> - 286, 285, 35, 35, 285, 288, 295, 298, 296, 35,
> - 35, 35, 35, 298, 301, 328, 299, 294, 35, 35,
> - 275, 35, 35, 35, 303, 29, 305, 300, 275, 29,
> - 307, 306, 35, 35, 302, 308, 337, 36, 35, 35,
> - 309, 310, 320, 316, 35, 35, 35, 35, 322, 36,
> - 35, 35, 317, 275, 319, 311, 29, 305, 335, 275,
> - 318, 321, 306, 323, 35, 35, 35, 35, 330, 329,
> -
> - 35, 35, 331, 333, 327, 35, 35, 338, 35, 35,
> - 353, 340, 35, 35, 350, 325, 275, 315, 35, 35,
> - 27, 27, 27, 27, 29, 29, 29, 31, 31, 31,
> - 31, 36, 36, 36, 36, 62, 313, 62, 62, 63,
> - 63, 63, 63, 65, 269, 65, 65, 35, 35, 35,
> - 35, 69, 69, 261, 69, 94, 94, 94, 94, 96,
> - 251, 96, 96, 128, 128, 128, 128, 143, 143, 143,
> - 143, 149, 149, 149, 149, 153, 153, 153, 153, 158,
> - 158, 158, 158, 165, 165, 165, 165, 167, 298, 167,
> - 167, 180, 180, 180, 180, 185, 185, 185, 185, 187,
> -
> - 292, 187, 187, 192, 192, 192, 192, 194, 240, 194,
> - 194, 197, 197, 197, 197, 199, 289, 199, 199, 203,
> - 203, 203, 203, 205, 284, 205, 205, 210, 210, 210,
> - 210, 169, 280, 169, 169, 221, 221, 221, 221, 223,
> - 269, 223, 223, 230, 230, 230, 230, 189, 266, 189,
> - 189, 196, 211, 196, 196, 201, 261, 201, 201, 207,
> - 251, 207, 207, 237, 237, 237, 237, 239, 239, 239,
> - 239, 225, 240, 225, 225, 250, 250, 250, 250, 253,
> - 253, 253, 253, 255, 238, 255, 255, 260, 260, 260,
> - 260, 263, 263, 263, 263, 265, 265, 265, 265, 268,
> -
> - 268, 268, 268, 274, 274, 274, 274, 279, 279, 279,
> - 279, 257, 211, 257, 257, 283, 283, 283, 283, 287,
> - 287, 287, 287, 264, 138, 264, 264, 291, 291, 291,
> - 291, 297, 297, 297, 297, 304, 304, 304, 304, 306,
> - 136, 306, 306, 312, 312, 312, 312, 314, 314, 314,
> - 314, 308, 97, 308, 308, 324, 324, 324, 324, 326,
> - 326, 326, 326, 332, 332, 332, 332, 334, 334, 334,
> - 334, 336, 336, 336, 336, 341, 341, 341, 341, 343,
> - 343, 343, 343, 345, 345, 345, 345, 347, 347, 347,
> - 347, 351, 351, 351, 351, 36, 30, 59, 57, 36,
> -
> - 30, 354, 28, 28, 5, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354
> + 36, 56, 58, 36, 53, 55, 36, 36, 51, 60,
> + 54, 84, 52, 61, 62, 29, 65, 32, 32, 33,
> +
> + 36, 66, 71, 36, 34, 29, 29, 29, 30, 36,
> + 36, 36, 29, 38, 67, 67, 67, 68, 67, 72,
> + 75, 67, 69, 73, 36, 36, 74, 36, 78, 79,
> + 36, 77, 36, 36, 36, 83, 76, 36, 81, 85,
> + 36, 87, 36, 86, 36, 36, 36, 82, 89, 36,
> + 36, 36, 36, 94, 90, 36, 100, 88, 36, 36,
> + 92, 91, 93, 101, 90, 29, 65, 95, 29, 97,
> + 102, 66, 36, 36, 98, 36, 36, 106, 36, 36,
> + 125, 108, 107, 103, 36, 36, 36, 86, 36, 104,
> + 105, 36, 109, 36, 111, 36, 36, 110, 112, 114,
> +
> + 117, 36, 36, 119, 120, 36, 348, 36, 36, 138,
> + 36, 113, 29, 29, 29, 30, 124, 118, 36, 29,
> + 38, 36, 36, 115, 116, 121, 122, 126, 36, 29,
> + 97, 123, 36, 36, 134, 98, 127, 133, 140, 36,
> + 36, 36, 128, 129, 129, 67, 130, 129, 135, 136,
> + 129, 132, 36, 36, 36, 36, 137, 142, 181, 143,
> + 86, 144, 144, 67, 145, 144, 35, 35, 144, 147,
> + 35, 35, 90, 119, 180, 36, 149, 36, 148, 150,
> + 150, 67, 151, 150, 36, 163, 150, 153, 154, 154,
> + 67, 155, 154, 36, 36, 154, 157, 164, 122, 158,
> +
> + 36, 159, 159, 67, 160, 159, 165, 36, 159, 162,
> + 36, 36, 167, 29, 170, 168, 29, 172, 166, 171,
> + 36, 175, 173, 35, 35, 176, 36, 36, 177, 36,
> + 188, 343, 36, 174, 36, 218, 178, 217, 36, 36,
> + 36, 179, 182, 182, 67, 183, 182, 187, 186, 182,
> + 185, 29, 190, 29, 192, 35, 35, 191, 206, 193,
> + 35, 35, 29, 197, 194, 29, 199, 36, 198, 29,
> + 202, 200, 29, 204, 36, 203, 195, 36, 205, 29,
> + 208, 29, 210, 29, 170, 209, 213, 211, 341, 171,
> + 36, 216, 212, 219, 35, 35, 35, 35, 35, 35,
> +
> + 36, 224, 36, 244, 223, 225, 36, 339, 221, 36,
> + 222, 29, 227, 29, 229, 220, 255, 228, 232, 230,
> + 231, 36, 36, 36, 233, 233, 67, 234, 233, 29,
> + 190, 233, 236, 35, 35, 191, 238, 35, 29, 197,
> + 29, 202, 239, 36, 198, 237, 203, 29, 208, 36,
> + 241, 36, 281, 209, 35, 247, 248, 36, 358, 240,
> + 35, 35, 35, 35, 35, 35, 253, 36, 35, 35,
> + 355, 29, 227, 250, 254, 322, 249, 228, 251, 252,
> + 35, 258, 29, 260, 29, 262, 264, 36, 261, 265,
> + 263, 35, 35, 36, 35, 35, 268, 316, 36, 70,
> +
> + 270, 35, 35, 35, 35, 35, 35, 273, 35, 35,
> + 281, 276, 35, 35, 304, 277, 35, 35, 282, 283,
> + 35, 35, 278, 305, 284, 279, 287, 29, 260, 35,
> + 35, 288, 36, 261, 291, 291, 67, 292, 291, 35,
> + 35, 291, 294, 304, 354, 296, 301, 299, 302, 35,
> + 35, 35, 35, 307, 300, 35, 35, 306, 35, 309,
> + 35, 35, 29, 311, 29, 313, 35, 35, 312, 281,
> + 314, 308, 35, 35, 315, 35, 35, 35, 35, 326,
> + 29, 311, 328, 36, 281, 325, 312, 35, 35, 317,
> + 281, 324, 327, 323, 329, 35, 35, 35, 35, 336,
> +
> + 281, 35, 35, 352, 334, 337, 335, 350, 35, 35,
> + 35, 35, 359, 346, 35, 35, 356, 348, 344, 345,
> + 35, 35, 27, 27, 27, 27, 29, 29, 29, 31,
> + 31, 31, 31, 36, 36, 36, 36, 63, 321, 63,
> + 63, 64, 64, 64, 64, 66, 319, 66, 66, 35,
> + 35, 35, 35, 70, 70, 343, 70, 96, 96, 96,
> + 96, 98, 341, 98, 98, 131, 131, 131, 131, 146,
> + 146, 146, 146, 152, 152, 152, 152, 156, 156, 156,
> + 156, 161, 161, 161, 161, 169, 169, 169, 169, 171,
> + 339, 171, 171, 184, 184, 184, 184, 189, 189, 189,
> +
> + 189, 191, 333, 191, 191, 196, 196, 196, 196, 198,
> + 331, 198, 198, 201, 201, 201, 201, 203, 281, 203,
> + 203, 207, 207, 207, 207, 209, 321, 209, 209, 214,
> + 214, 214, 214, 173, 319, 173, 173, 226, 226, 226,
> + 226, 228, 275, 228, 228, 235, 235, 235, 235, 193,
> + 267, 193, 193, 200, 257, 200, 200, 205, 304, 205,
> + 205, 211, 298, 211, 211, 242, 242, 242, 242, 245,
> + 245, 245, 245, 230, 246, 230, 230, 256, 256, 256,
> + 256, 259, 259, 259, 259, 261, 295, 261, 261, 266,
> + 266, 266, 266, 269, 269, 269, 269, 271, 271, 271,
> +
> + 271, 274, 274, 274, 274, 280, 280, 280, 280, 285,
> + 285, 285, 285, 263, 290, 263, 263, 289, 289, 289,
> + 289, 293, 293, 293, 293, 270, 286, 270, 270, 297,
> + 297, 297, 297, 303, 303, 303, 303, 310, 310, 310,
> + 310, 312, 275, 312, 312, 318, 318, 318, 318, 320,
> + 320, 320, 320, 314, 272, 314, 314, 330, 330, 330,
> + 330, 332, 332, 332, 332, 338, 338, 338, 338, 340,
> + 340, 340, 340, 342, 342, 342, 342, 347, 347, 347,
> + 347, 349, 349, 349, 349, 351, 351, 351, 351, 353,
> + 353, 353, 353, 357, 357, 357, 357, 215, 267, 257,
> +
> + 246, 243, 215, 141, 139, 99, 36, 30, 59, 57,
> + 36, 30, 360, 28, 28, 5, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360
> } ;
>
> -static const flex_int16_t yy_chk[940] =
> +static const flex_int16_t yy_chk[951] =
> { 0,
> 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
> 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
> @@ -927,101 +930,102 @@ static const flex_int16_t yy_chk[940] =
> 18, 14, 11, 11, 13, 14, 11, 46, 46, 14,
> 15, 16, 11, 12, 12, 12, 12, 12, 14, 16,
> 12, 12, 12, 15, 19, 16, 20, 20, 21, 22,
> - 24, 22, 24, 50, 26, 21, 50, 26, 19, 351,
> - 20, 26, 19, 31, 31, 32, 32, 32, 39, 31,
> -
> - 39, 42, 32, 35, 35, 35, 35, 40, 44, 45,
> - 35, 35, 37, 37, 37, 37, 37, 39, 42, 37,
> - 37, 40, 41, 43, 41, 48, 45, 45, 49, 44,
> - 47, 47, 53, 51, 43, 53, 48, 51, 52, 54,
> - 52, 55, 56, 58, 54, 49, 57, 59, 60, 73,
> - 61, 70, 60, 61, 347, 70, 56, 63, 63, 73,
> - 58, 71, 59, 63, 59, 55, 66, 66, 57, 71,
> - 74, 72, 66, 72, 75, 76, 77, 78, 79, 78,
> - 77, 79, 80, 81, 74, 83, 80, 82, 75, 84,
> - 82, 85, 88, 85, 76, 81, 87, 83, 87, 89,
> -
> - 92, 89, 93, 345, 90, 104, 92, 84, 86, 86,
> - 86, 86, 90, 99, 88, 86, 86, 98, 102, 86,
> - 86, 91, 91, 93, 91, 94, 94, 91, 101, 104,
> - 102, 94, 101, 110, 99, 98, 100, 100, 100, 100,
> - 100, 103, 103, 100, 100, 343, 105, 103, 105, 107,
> - 109, 107, 111, 110, 109, 113, 113, 341, 121, 118,
> - 111, 112, 112, 112, 112, 112, 121, 113, 112, 112,
> - 114, 114, 116, 116, 118, 116, 114, 115, 115, 115,
> - 115, 115, 123, 123, 115, 115, 117, 117, 117, 117,
> - 117, 124, 122, 117, 117, 119, 122, 119, 120, 120,
> -
> - 120, 120, 120, 125, 130, 120, 120, 125, 131, 124,
> - 126, 126, 128, 128, 131, 134, 126, 130, 128, 133,
> - 133, 133, 135, 136, 133, 139, 164, 140, 138, 140,
> - 134, 164, 133, 141, 141, 163, 163, 338, 139, 141,
> - 136, 135, 137, 137, 137, 137, 137, 138, 336, 137,
> - 137, 143, 143, 145, 145, 146, 146, 143, 147, 147,
> - 149, 149, 145, 155, 147, 161, 149, 151, 151, 153,
> - 153, 146, 160, 151, 270, 153, 176, 156, 156, 158,
> - 158, 176, 155, 156, 161, 158, 165, 165, 170, 270,
> - 160, 170, 165, 172, 172, 173, 173, 174, 174, 175,
> -
> - 208, 177, 220, 175, 177, 178, 178, 173, 220, 174,
> - 208, 178, 180, 180, 172, 182, 182, 183, 180, 334,
> - 190, 190, 183, 184, 184, 184, 184, 184, 185, 185,
> - 184, 184, 190, 243, 185, 191, 191, 192, 192, 197,
> - 197, 202, 202, 192, 332, 197, 203, 203, 209, 209,
> - 213, 213, 203, 214, 214, 215, 215, 243, 216, 216,
> - 217, 217, 218, 218, 219, 219, 221, 221, 215, 235,
> - 219, 235, 221, 214, 216, 217, 227, 227, 228, 228,
> - 230, 230, 232, 331, 228, 233, 230, 233, 233, 329,
> - 232, 232, 236, 236, 241, 241, 244, 244, 245, 245,
> -
> - 241, 246, 246, 247, 248, 248, 267, 267, 244, 259,
> - 259, 247, 247, 252, 252, 245, 248, 326, 246, 252,
> - 253, 253, 267, 324, 259, 316, 253, 262, 262, 262,
> - 262, 262, 271, 271, 262, 262, 272, 276, 273, 272,
> - 272, 273, 273, 277, 278, 316, 276, 271, 281, 281,
> - 299, 278, 278, 282, 282, 285, 285, 277, 300, 287,
> - 287, 285, 290, 290, 281, 287, 323, 293, 294, 294,
> - 290, 293, 303, 299, 301, 301, 302, 302, 310, 310,
> - 303, 303, 300, 317, 302, 294, 304, 304, 322, 328,
> - 301, 309, 304, 311, 309, 309, 311, 311, 318, 317,
> -
> - 318, 318, 319, 321, 314, 319, 319, 328, 330, 330,
> - 350, 330, 340, 340, 340, 312, 297, 296, 350, 350,
> - 355, 355, 355, 355, 356, 356, 356, 357, 357, 357,
> - 357, 358, 358, 358, 358, 359, 295, 359, 359, 360,
> - 360, 360, 360, 361, 291, 361, 361, 362, 362, 362,
> - 362, 363, 363, 283, 363, 364, 364, 364, 364, 365,
> - 279, 365, 365, 366, 366, 366, 366, 367, 367, 367,
> - 367, 368, 368, 368, 368, 369, 369, 369, 369, 370,
> - 370, 370, 370, 371, 371, 371, 371, 372, 274, 372,
> - 372, 373, 373, 373, 373, 374, 374, 374, 374, 375,
> -
> - 268, 375, 375, 376, 376, 376, 376, 377, 265, 377,
> - 377, 378, 378, 378, 378, 379, 263, 379, 379, 380,
> - 380, 380, 380, 381, 260, 381, 381, 382, 382, 382,
> - 382, 383, 250, 383, 383, 384, 384, 384, 384, 385,
> - 242, 385, 385, 386, 386, 386, 386, 387, 239, 387,
> - 387, 388, 237, 388, 388, 389, 234, 389, 389, 390,
> - 226, 390, 390, 391, 391, 391, 391, 392, 392, 392,
> - 392, 393, 212, 393, 393, 394, 394, 394, 394, 395,
> - 395, 395, 395, 396, 210, 396, 396, 397, 397, 397,
> - 397, 398, 398, 398, 398, 399, 399, 399, 399, 400,
> -
> - 400, 400, 400, 401, 401, 401, 401, 402, 402, 402,
> - 402, 403, 162, 403, 403, 404, 404, 404, 404, 405,
> - 405, 405, 405, 406, 108, 406, 406, 407, 407, 407,
> - 407, 408, 408, 408, 408, 409, 409, 409, 409, 410,
> - 106, 410, 410, 411, 411, 411, 411, 412, 412, 412,
> - 412, 413, 69, 413, 413, 414, 414, 414, 414, 415,
> - 415, 415, 415, 416, 416, 416, 416, 417, 417, 417,
> - 417, 418, 418, 418, 418, 419, 419, 419, 419, 420,
> - 420, 420, 420, 421, 421, 421, 421, 422, 422, 422,
> - 422, 423, 423, 423, 423, 36, 29, 25, 23, 17,
> -
> - 6, 5, 4, 3, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354, 354,
> - 354, 354, 354, 354, 354, 354, 354, 354, 354
> + 24, 22, 24, 47, 47, 21, 26, 51, 19, 26,
> + 20, 51, 19, 26, 26, 31, 31, 32, 32, 32,
> +
> + 39, 31, 39, 42, 32, 35, 35, 35, 35, 40,
> + 44, 45, 35, 35, 37, 37, 37, 37, 37, 39,
> + 42, 37, 37, 40, 41, 43, 41, 48, 45, 45,
> + 49, 44, 50, 55, 56, 50, 43, 52, 48, 52,
> + 53, 54, 57, 53, 58, 59, 54, 49, 56, 60,
> + 62, 61, 71, 60, 61, 72, 71, 55, 77, 94,
> + 59, 58, 59, 72, 57, 64, 64, 62, 67, 67,
> + 73, 64, 73, 74, 67, 75, 76, 77, 78, 79,
> + 94, 79, 78, 74, 80, 82, 84, 80, 81, 75,
> + 76, 83, 81, 85, 83, 89, 91, 82, 84, 86,
> +
> + 88, 86, 88, 90, 91, 90, 357, 107, 95, 107,
> + 93, 85, 87, 87, 87, 87, 93, 89, 100, 87,
> + 87, 101, 104, 87, 87, 92, 92, 95, 92, 96,
> + 96, 92, 106, 103, 104, 96, 100, 103, 109, 112,
> + 109, 139, 101, 102, 102, 102, 102, 102, 105, 105,
> + 102, 102, 113, 111, 105, 138, 106, 111, 139, 112,
> + 113, 114, 114, 114, 114, 114, 115, 115, 114, 114,
> + 116, 116, 118, 118, 138, 118, 116, 123, 115, 117,
> + 117, 117, 117, 117, 120, 123, 117, 117, 119, 119,
> + 119, 119, 119, 124, 127, 119, 119, 124, 121, 120,
> +
> + 121, 122, 122, 122, 122, 122, 125, 125, 122, 122,
> + 126, 128, 127, 129, 129, 128, 131, 131, 126, 129,
> + 133, 134, 131, 136, 136, 136, 137, 134, 136, 141,
> + 143, 353, 143, 133, 142, 168, 136, 167, 167, 158,
> + 168, 137, 140, 140, 140, 140, 140, 142, 141, 140,
> + 140, 144, 144, 146, 146, 148, 148, 144, 158, 146,
> + 149, 149, 150, 150, 148, 152, 152, 164, 150, 154,
> + 154, 152, 156, 156, 163, 154, 149, 166, 156, 159,
> + 159, 161, 161, 169, 169, 159, 164, 161, 351, 169,
> + 174, 166, 163, 174, 176, 176, 177, 177, 178, 178,
> +
> + 179, 180, 181, 216, 179, 181, 180, 349, 177, 216,
> + 178, 182, 182, 184, 184, 176, 225, 182, 187, 184,
> + 186, 186, 225, 187, 188, 188, 188, 188, 188, 189,
> + 189, 188, 188, 194, 194, 189, 195, 195, 196, 196,
> + 201, 201, 206, 206, 196, 194, 201, 207, 207, 212,
> + 213, 213, 305, 207, 218, 218, 219, 219, 347, 212,
> + 220, 220, 221, 221, 222, 222, 223, 223, 224, 224,
> + 344, 226, 226, 220, 224, 305, 219, 226, 221, 222,
> + 232, 232, 233, 233, 235, 235, 237, 249, 233, 238,
> + 235, 238, 238, 299, 237, 237, 240, 299, 240, 241,
> +
> + 241, 247, 247, 250, 250, 251, 251, 247, 252, 252,
> + 253, 249, 254, 254, 282, 250, 265, 265, 253, 253,
> + 258, 258, 251, 282, 254, 252, 258, 259, 259, 273,
> + 273, 265, 276, 259, 268, 268, 268, 268, 268, 277,
> + 277, 268, 268, 283, 342, 273, 278, 276, 279, 278,
> + 278, 279, 279, 284, 277, 287, 287, 283, 288, 288,
> + 284, 284, 291, 291, 293, 293, 296, 296, 291, 306,
> + 293, 287, 300, 300, 296, 307, 307, 308, 308, 309,
> + 310, 310, 316, 316, 322, 308, 310, 309, 309, 300,
> + 323, 307, 315, 306, 317, 315, 315, 317, 317, 324,
> +
> + 334, 324, 324, 340, 322, 325, 323, 338, 325, 325,
> + 336, 336, 356, 336, 346, 346, 346, 337, 334, 335,
> + 356, 356, 361, 361, 361, 361, 362, 362, 362, 363,
> + 363, 363, 363, 364, 364, 364, 364, 365, 332, 365,
> + 365, 366, 366, 366, 366, 367, 330, 367, 367, 368,
> + 368, 368, 368, 369, 369, 329, 369, 370, 370, 370,
> + 370, 371, 328, 371, 371, 372, 372, 372, 372, 373,
> + 373, 373, 373, 374, 374, 374, 374, 375, 375, 375,
> + 375, 376, 376, 376, 376, 377, 377, 377, 377, 378,
> + 327, 378, 378, 379, 379, 379, 379, 380, 380, 380,
> +
> + 380, 381, 320, 381, 381, 382, 382, 382, 382, 383,
> + 318, 383, 383, 384, 384, 384, 384, 385, 303, 385,
> + 385, 386, 386, 386, 386, 387, 302, 387, 387, 388,
> + 388, 388, 388, 389, 301, 389, 389, 390, 390, 390,
> + 390, 391, 297, 391, 391, 392, 392, 392, 392, 393,
> + 289, 393, 393, 394, 285, 394, 394, 395, 280, 395,
> + 395, 396, 274, 396, 396, 397, 397, 397, 397, 398,
> + 398, 398, 398, 399, 271, 399, 399, 400, 400, 400,
> + 400, 401, 401, 401, 401, 402, 269, 402, 402, 403,
> + 403, 403, 403, 404, 404, 404, 404, 405, 405, 405,
> +
> + 405, 406, 406, 406, 406, 407, 407, 407, 407, 408,
> + 408, 408, 408, 409, 266, 409, 409, 410, 410, 410,
> + 410, 411, 411, 411, 411, 412, 256, 412, 412, 413,
> + 413, 413, 413, 414, 414, 414, 414, 415, 415, 415,
> + 415, 416, 248, 416, 416, 417, 417, 417, 417, 418,
> + 418, 418, 418, 419, 245, 419, 419, 420, 420, 420,
> + 420, 421, 421, 421, 421, 422, 422, 422, 422, 423,
> + 423, 423, 423, 424, 424, 424, 424, 425, 425, 425,
> + 425, 426, 426, 426, 426, 427, 427, 427, 427, 428,
> + 428, 428, 428, 429, 429, 429, 429, 242, 239, 231,
> +
> + 217, 214, 165, 110, 108, 70, 36, 29, 25, 23,
> + 17, 6, 5, 4, 3, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360,
> + 360, 360, 360, 360, 360, 360, 360, 360, 360, 360
> } ;
>
> #define YY_TRAILING_MASK 0x2000
> @@ -1199,9 +1203,9 @@ static int vdev_and_devtype(DiskParseContext
> *dpc, char *str) {
> #undef DPC /* needs to be defined differently the actual lexer */
> #define DPC ((DiskParseContext*)yyextra)
>
> -#line 1202 "libxlu_disk_l.c"
> +#line 1206 "libxlu_disk_l.c"
>
> -#line 1204 "libxlu_disk_l.c"
> +#line 1208 "libxlu_disk_l.c"
>
> #define INITIAL 0
> #define LEXERR 1
> @@ -1483,7 +1487,7 @@ YY_DECL
> #line 180 "libxlu_disk_l.l"
> /*----- the scanner rules which do the parsing -----*/
>
> -#line 1486 "libxlu_disk_l.c"
> +#line 1490 "libxlu_disk_l.c"
>
> while ( /*CONSTCOND*/1 ) /* loops until end-of-file is
> reached */
> {
> @@ -1515,14 +1519,14 @@ yy_match:
> while ( yy_chk[yy_base[yy_current_state] + yy_c] !=
> yy_current_state )
> {
> yy_current_state = (int)
> yy_def[yy_current_state];
> - if ( yy_current_state >= 355 )
> + if ( yy_current_state >= 361 )
> yy_c = yy_meta[yy_c];
> }
> yy_current_state = yy_nxt[yy_base[yy_current_state]
> + yy_c];
> *yyg->yy_state_ptr++ = yy_current_state;
> ++yy_cp;
> }
> - while ( yy_current_state != 354 );
> + while ( yy_current_state != 360 );
>
> yy_find_action:
> yy_current_state = *--yyg->yy_state_ptr;
> @@ -1648,76 +1652,81 @@ YY_RULE_SETUP
> #line 201 "libxlu_disk_l.l"
> { libxl_defbool_set(&DPC->disk->discard_enable, false); }
> YY_BREAK
> -/* Note that the COLO configuration settings should be considered unstable.
> - * They may change incompatibly in future versions of Xen. */
> case 15:
> YY_RULE_SETUP
> -#line 204 "libxlu_disk_l.l"
> -{ libxl_defbool_set(&DPC->disk->colo_enable, true); }
> +#line 202 "libxlu_disk_l.l"
> +{ DPC->disk->virtio = 1; }
> YY_BREAK
> +/* Note that the COLO configuration settings should be considered unstable.
> + * They may change incompatibly in future versions of Xen. */
> case 16:
> YY_RULE_SETUP
> #line 205 "libxlu_disk_l.l"
> -{ libxl_defbool_set(&DPC->disk->colo_enable, false); }
> +{ libxl_defbool_set(&DPC->disk->colo_enable, true); }
> YY_BREAK
> case 17:
> -/* rule 17 can match eol */
> YY_RULE_SETUP
> #line 206 "libxlu_disk_l.l"
> -{ STRIP(','); SAVESTRING("colo-host", colo_host, FROMEQUALS); }
> +{ libxl_defbool_set(&DPC->disk->colo_enable, false); }
> YY_BREAK
> case 18:
> /* rule 18 can match eol */
> YY_RULE_SETUP
> #line 207 "libxlu_disk_l.l"
> -{ STRIP(','); setcoloport(DPC, FROMEQUALS); }
> +{ STRIP(','); SAVESTRING("colo-host", colo_host, FROMEQUALS); }
> YY_BREAK
> case 19:
> /* rule 19 can match eol */
> YY_RULE_SETUP
> #line 208 "libxlu_disk_l.l"
> -{ STRIP(','); SAVESTRING("colo-export", colo_export, FROMEQUALS); }
> +{ STRIP(','); setcoloport(DPC, FROMEQUALS); }
> YY_BREAK
> case 20:
> /* rule 20 can match eol */
> YY_RULE_SETUP
> #line 209 "libxlu_disk_l.l"
> -{ STRIP(','); SAVESTRING("active-disk", active_disk, FROMEQUALS); }
> +{ STRIP(','); SAVESTRING("colo-export", colo_export, FROMEQUALS); }
> YY_BREAK
> case 21:
> /* rule 21 can match eol */
> YY_RULE_SETUP
> #line 210 "libxlu_disk_l.l"
> +{ STRIP(','); SAVESTRING("active-disk", active_disk, FROMEQUALS); }
> + YY_BREAK
> +case 22:
> +/* rule 22 can match eol */
> +YY_RULE_SETUP
> +#line 211 "libxlu_disk_l.l"
> { STRIP(','); SAVESTRING("hidden-disk", hidden_disk, FROMEQUALS); }
> YY_BREAK
> /* the target magic parameter, eats the rest of the string */
> -case 22:
> +case 23:
> YY_RULE_SETUP
> -#line 214 "libxlu_disk_l.l"
> +#line 215 "libxlu_disk_l.l"
> { STRIP(','); SAVESTRING("target", pdev_path, FROMEQUALS); }
> YY_BREAK
> /* unknown parameters */
> -case 23:
> -/* rule 23 can match eol */
> +case 24:
> +/* rule 24 can match eol */
> YY_RULE_SETUP
> -#line 218 "libxlu_disk_l.l"
> +#line 219 "libxlu_disk_l.l"
> { xlu__disk_err(DPC,yytext,"unknown parameter"); }
> YY_BREAK
> /* deprecated prefixes */
> /* the "/.*" in these patterns ensures that they count as if they
> * matched the whole string, so these patterns take precedence */
> -case 24:
> +case 25:
> YY_RULE_SETUP
> -#line 225 "libxlu_disk_l.l"
> +#line 226 "libxlu_disk_l.l"
> {
> STRIP(':');
> DPC->had_depr_prefix=1; DEPRECATE("use `[format=]...,'");
> setformat(DPC, yytext);
> }
> YY_BREAK
> -case 25:
> +case 26:
> YY_RULE_SETUP
> -#line 231 "libxlu_disk_l.l"
> +#line 232 "libxlu_disk_l.l"
> {
> char *newscript;
> STRIP(':');
> @@ -1731,30 +1740,22 @@ YY_RULE_SETUP
> free(newscript);
> }
> YY_BREAK
> -case 26:
> +case 27:
> *yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
> yyg->yy_c_buf_p = yy_cp = yy_bp + 8;
> YY_DO_BEFORE_ACTION; /* set up yytext again */
> YY_RULE_SETUP
> -#line 244 "libxlu_disk_l.l"
> -{ DPC->had_depr_prefix=1; DEPRECATE(0); }
> - YY_BREAK
> -case 27:
> -YY_RULE_SETUP
> #line 245 "libxlu_disk_l.l"
> { DPC->had_depr_prefix=1; DEPRECATE(0); }
> YY_BREAK
> case 28:
> -*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
> -yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
> -YY_DO_BEFORE_ACTION; /* set up yytext again */
> YY_RULE_SETUP
> #line 246 "libxlu_disk_l.l"
> { DPC->had_depr_prefix=1; DEPRECATE(0); }
> YY_BREAK
> case 29:
> *yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
> -yyg->yy_c_buf_p = yy_cp = yy_bp + 6;
> +yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
> YY_DO_BEFORE_ACTION; /* set up yytext again */
> YY_RULE_SETUP
> #line 247 "libxlu_disk_l.l"
> @@ -1762,7 +1763,7 @@ YY_RULE_SETUP
> YY_BREAK
> case 30:
> *yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
> -yyg->yy_c_buf_p = yy_cp = yy_bp + 5;
> +yyg->yy_c_buf_p = yy_cp = yy_bp + 6;
> YY_DO_BEFORE_ACTION; /* set up yytext again */
> YY_RULE_SETUP
> #line 248 "libxlu_disk_l.l"
> @@ -1770,26 +1771,34 @@ YY_RULE_SETUP
> YY_BREAK
> case 31:
> *yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
> -yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
> +yyg->yy_c_buf_p = yy_cp = yy_bp + 5;
> YY_DO_BEFORE_ACTION; /* set up yytext again */
> YY_RULE_SETUP
> #line 249 "libxlu_disk_l.l"
> { DPC->had_depr_prefix=1; DEPRECATE(0); }
> YY_BREAK
> case 32:
> -/* rule 32 can match eol */
> +*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
> +yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
> +YY_DO_BEFORE_ACTION; /* set up yytext again */
> +YY_RULE_SETUP
> +#line 250 "libxlu_disk_l.l"
> +{ DPC->had_depr_prefix=1; DEPRECATE(0); }
> + YY_BREAK
> +case 33:
> +/* rule 33 can match eol */
> YY_RULE_SETUP
> -#line 251 "libxlu_disk_l.l"
> +#line 252 "libxlu_disk_l.l"
> {
> xlu__disk_err(DPC,yytext,"unknown deprecated disk
> prefix");
> return 0;
> }
> YY_BREAK
> /* positional parameters */
> -case 33:
> -/* rule 33 can match eol */
> +case 34:
> +/* rule 34 can match eol */
> YY_RULE_SETUP
> -#line 258 "libxlu_disk_l.l"
> +#line 259 "libxlu_disk_l.l"
> {
> STRIP(',');
>
> @@ -1816,27 +1825,27 @@ YY_RULE_SETUP
> }
> }
> YY_BREAK
> -case 34:
> +case 35:
> YY_RULE_SETUP
> -#line 284 "libxlu_disk_l.l"
> +#line 285 "libxlu_disk_l.l"
> {
> BEGIN(LEXERR);
> yymore();
> }
> YY_BREAK
> -case 35:
> +case 36:
> YY_RULE_SETUP
> -#line 288 "libxlu_disk_l.l"
> +#line 289 "libxlu_disk_l.l"
> {
> xlu__disk_err(DPC,yytext,"bad disk syntax"); return 0;
> }
> YY_BREAK
> -case 36:
> +case 37:
> YY_RULE_SETUP
> -#line 291 "libxlu_disk_l.l"
> +#line 292 "libxlu_disk_l.l"
> YY_FATAL_ERROR( "flex scanner jammed" );
> YY_BREAK
> -#line 1839 "libxlu_disk_l.c"
> +#line 1848 "libxlu_disk_l.c"
> case YY_STATE_EOF(INITIAL):
> case YY_STATE_EOF(LEXERR):
> yyterminate();
> @@ -2104,7 +2113,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
> while ( yy_chk[yy_base[yy_current_state] + yy_c] !=
> yy_current_state )
> {
> yy_current_state = (int) yy_def[yy_current_state];
> - if ( yy_current_state >= 355 )
> + if ( yy_current_state >= 361 )
> yy_c = yy_meta[yy_c];
> }
> yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
> @@ -2128,11 +2137,11 @@ static int yy_get_next_buffer (yyscan_t
> yyscanner)
> while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
> {
> yy_current_state = (int) yy_def[yy_current_state];
> - if ( yy_current_state >= 355 )
> + if ( yy_current_state >= 361 )
> yy_c = yy_meta[yy_c];
> }
> yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
> - yy_is_jam = (yy_current_state == 354);
> + yy_is_jam = (yy_current_state == 360);
> if ( ! yy_is_jam )
> *yyg->yy_state_ptr++ = yy_current_state;
>
> @@ -2941,4 +2950,4 @@ void yyfree (void * ptr , yyscan_t yyscanner)
>
> #define YYTABLES_NAME "yytables"
>
> -#line 291 "libxlu_disk_l.l"
> +#line 292 "libxlu_disk_l.l"
> diff --git a/tools/libs/util/libxlu_disk_l.h b/tools/libs/util/libxlu_disk_l.h
> index 6abeecf..df20fcc 100644
> --- a/tools/libs/util/libxlu_disk_l.h
> +++ b/tools/libs/util/libxlu_disk_l.h
> @@ -694,7 +694,7 @@ extern int yylex (yyscan_t yyscanner);
> #undef yyTABLES_NAME
> #endif
>
> -#line 291 "libxlu_disk_l.l"
> +#line 292 "libxlu_disk_l.l"
>
> #line 699 "libxlu_disk_l.h"
> #undef xlu__disk_yyIN_HEADER
> diff --git a/tools/libs/util/libxlu_disk_l.l b/tools/libs/util/libxlu_disk_l.l
> index 3bd639a..d68a59c 100644
> --- a/tools/libs/util/libxlu_disk_l.l
> +++ b/tools/libs/util/libxlu_disk_l.l
> @@ -198,6 +198,7 @@ script=[^,]*,? { STRIP(','); SAVESTRING("script",
> script, FROMEQUALS); }
> direct-io-safe,? { DPC->disk->direct_io_safe = 1; }
> discard,? { libxl_defbool_set(&DPC->disk->discard_enable, true); }
> no-discard,? { libxl_defbool_set(&DPC->disk->discard_enable, false); }
> +virtio,? { DPC->disk->virtio = 1; }
> /* Note that the COLO configuration settings should be considered unstable.
> * They may change incompatibly in future versions of Xen. */
> colo,? { libxl_defbool_set(&DPC->disk->colo_enable, true); }
> diff --git a/tools/xl/xl_block.c b/tools/xl/xl_block.c
> index 70eed43..50a4d45 100644
> --- a/tools/xl/xl_block.c
> +++ b/tools/xl/xl_block.c
> @@ -50,6 +50,11 @@ int main_blockattach(int argc, char **argv)
> return 0;
> }
>
> + if (disk.virtio) {
> + fprintf(stderr, "block-attach is not supported for Virtio device\n");
> + return 1;
> + }
> +
> if (libxl_device_disk_add(ctx, fe_domid, &disk, 0)) {
> fprintf(stderr, "libxl_device_disk_add failed.\n");
> return 1;
> @@ -119,6 +124,12 @@ int main_blockdetach(int argc, char **argv)
> fprintf(stderr, "Error: Device %s not connected.\n", argv[optind+1]);
> return 1;
> }
> +
> + if (disk.virtio) {
> + fprintf(stderr, "block-detach is not supported for Virtio device\n");
> + return 1;
> + }
> +
> rc = !force ? libxl_device_disk_safe_remove(ctx, domid, &disk, 0) :
> libxl_device_disk_destroy(ctx, domid, &disk, 0);
> if (rc) {
> --
> 2.7.4
>
[Jiamei Xie]
Tested-by: Jiamei Xie <Jiamei.xie@arm.com>
Best wishes
Jiamei Xie
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-08 16:59 ` [PATCH V6 1/2] libxl: Add support for Virtio disk configuration Oleksandr Tyshchenko
2021-12-09 6:50 ` Jiamei Xie
@ 2021-12-14 16:03 ` Anthony PERARD
2021-12-14 17:44 ` Oleksandr
1 sibling, 1 reply; 20+ messages in thread
From: Anthony PERARD @ 2021-12-14 16:03 UTC (permalink / raw)
To: Oleksandr Tyshchenko
Cc: xen-devel, Oleksandr Tyshchenko, Wei Liu, George Dunlap,
Nick Rosbrook, Juergen Gross, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko wrote:
> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>
> This patch adds basic support for configuring and assisting virtio-disk
> backend (emualator) which is intended to run out of Qemu and could be
> run in any domain.
> Although the Virtio block device is quite different from traditional
> Xen PV block device (vbd) from the toolstack point of view:
> - as the frontend is virtio-blk which is not a Xenbus driver, nothing
> written to Xenstore are fetched by the frontend (the vdev is not
> passed to the frontend)
> - the ring-ref/event-channel are not used for the backend<->frontend
> communication, the proposed IPC for Virtio is IOREQ/DM
> it is still a "block device" and ought to be integrated in existing
> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
> logic to deal with Virtio devices as well.
How backend are intended to be created? Is there something listening on
xenstore?
You mention QEMU as been the backend, do you intend to have QEMU
listening on xenstore to create a virtio backend? Or maybe it is on the
command line? There is QMP as well, but it's probably a lot more
complicated as I think libxl needs refactoring for that.
> Besides introducing new disk backend type (LIBXL_DISK_BACKEND_VIRTIO)
> introduce new device kind (LIBXL__DEVICE_KIND_VIRTIO_DISK) as current
> one (LIBXL__DEVICE_KIND_VBD) doesn't fit into Virtio disk model.
>
> In order to inform the toolstack that Virtio disk needs to be used
> extend "disk" configuration by introducing new "virtio" flag.
> An example of domain configuration:
> disk = [ 'backend=DomD, phy:/dev/mmcblk1p3, xvda1, rw, virtio' ]
This new "virtio" flags feels strange. Would having something like
"backendtype=virtio" works?
> Please note, this patch is not enough for virtio-disk to work
> on Xen (Arm), as for every Virtio device (including disk) we need
> to allocate Virtio MMIO params (IRQ and memory region) and pass
> them to the backend, also update Guest device-tree. The subsequent
> patch will add these missing bits. For the current patch,
> the default "irq" and "base" are just written to the Xenstore.
This feels like the patches are in the wrong order. I don't think it is
a good idea to allow to create broken configuration until a follow-up
patch fixes things.
> diff --git a/tools/xl/xl_block.c b/tools/xl/xl_block.c
> index 70eed43..50a4d45 100644
> --- a/tools/xl/xl_block.c
> +++ b/tools/xl/xl_block.c
> @@ -50,6 +50,11 @@ int main_blockattach(int argc, char **argv)
> return 0;
> }
>
> + if (disk.virtio) {
> + fprintf(stderr, "block-attach is not supported for Virtio device\n");
> + return 1;
> + }
This might not be the right place. libxl might want to prevent hotplug
instead.
Thanks,
--
Anthony PERARD
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-14 16:03 ` Anthony PERARD
@ 2021-12-14 17:44 ` Oleksandr
2021-12-15 6:08 ` Juergen Gross
2021-12-15 13:02 ` Oleksandr
0 siblings, 2 replies; 20+ messages in thread
From: Oleksandr @ 2021-12-14 17:44 UTC (permalink / raw)
To: Anthony PERARD
Cc: xen-devel, Oleksandr Tyshchenko, Wei Liu, George Dunlap,
Nick Rosbrook, Juergen Gross, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
On 14.12.21 18:03, Anthony PERARD wrote:
Hi Anthony
> On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko wrote:
>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>>
>> This patch adds basic support for configuring and assisting virtio-disk
>> backend (emualator) which is intended to run out of Qemu and could be
>> run in any domain.
>> Although the Virtio block device is quite different from traditional
>> Xen PV block device (vbd) from the toolstack point of view:
>> - as the frontend is virtio-blk which is not a Xenbus driver, nothing
>> written to Xenstore are fetched by the frontend (the vdev is not
>> passed to the frontend)
>> - the ring-ref/event-channel are not used for the backend<->frontend
>> communication, the proposed IPC for Virtio is IOREQ/DM
>> it is still a "block device" and ought to be integrated in existing
>> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
>> logic to deal with Virtio devices as well.
> How backend are intended to be created? Is there something listening on
> xenstore?
>
> You mention QEMU as been the backend, do you intend to have QEMU
> listening on xenstore to create a virtio backend? Or maybe it is on the
> command line? There is QMP as well, but it's probably a lot more
> complicated as I think libxl needs refactoring for that.
No, QEMU is not involved there. The backend is a standalone application,
it is launched from the command line. The backend reads the Xenstore to get
the configuration and to detect when guest with the frontend is
created/destroyed.
>
>> Besides introducing new disk backend type (LIBXL_DISK_BACKEND_VIRTIO)
>> introduce new device kind (LIBXL__DEVICE_KIND_VIRTIO_DISK) as current
>> one (LIBXL__DEVICE_KIND_VBD) doesn't fit into Virtio disk model.
>>
>> In order to inform the toolstack that Virtio disk needs to be used
>> extend "disk" configuration by introducing new "virtio" flag.
>> An example of domain configuration:
>> disk = [ 'backend=DomD, phy:/dev/mmcblk1p3, xvda1, rw, virtio' ]
> This new "virtio" flags feels strange. Would having something like
> "backendtype=virtio" works?
IIRC I considered "backendtype=virtio" option, but decided to go "an
extra virtio flag" route, however I don't remember what exactly affected
my decision.
But, I see your point and agree, I will analyze whether we can use
"backendtype=virtio", I hope that we can, but need to make sure.
>
>> Please note, this patch is not enough for virtio-disk to work
>> on Xen (Arm), as for every Virtio device (including disk) we need
>> to allocate Virtio MMIO params (IRQ and memory region) and pass
>> them to the backend, also update Guest device-tree. The subsequent
>> patch will add these missing bits. For the current patch,
>> the default "irq" and "base" are just written to the Xenstore.
> This feels like the patches are in the wrong order. I don't think it is
> a good idea to allow to create broken configuration until a follow-up
> patch fixes things.
Yes, I also think this is not an ideal splitting, so I decided to write
a few sentences to draw reviewer's attention to this.
The problem is that second patch adds Arm bits which are local to
libs/light/libxl_arm.c and if I put it before the current one I will
break the bisectability
as there will be no callers yet.
>
>> diff --git a/tools/xl/xl_block.c b/tools/xl/xl_block.c
>> index 70eed43..50a4d45 100644
>> --- a/tools/xl/xl_block.c
>> +++ b/tools/xl/xl_block.c
>> @@ -50,6 +50,11 @@ int main_blockattach(int argc, char **argv)
>> return 0;
>> }
>>
>> + if (disk.virtio) {
>> + fprintf(stderr, "block-attach is not supported for Virtio device\n");
>> + return 1;
>> + }
> This might not be the right place. libxl might want to prevent hotplug
> instead.
Could you please point me the right place where to prevent hotplug?
Thank you.
>
> Thanks,
>
--
Regards,
Oleksandr Tyshchenko
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-14 17:44 ` Oleksandr
@ 2021-12-15 6:08 ` Juergen Gross
2021-12-15 15:02 ` Oleksandr
2021-12-15 13:02 ` Oleksandr
1 sibling, 1 reply; 20+ messages in thread
From: Juergen Gross @ 2021-12-15 6:08 UTC (permalink / raw)
To: Oleksandr, Anthony PERARD
Cc: xen-devel, Oleksandr Tyshchenko, Wei Liu, George Dunlap,
Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
[-- Attachment #1.1.1: Type: text/plain, Size: 2158 bytes --]
On 14.12.21 18:44, Oleksandr wrote:
>
> On 14.12.21 18:03, Anthony PERARD wrote:
>
> Hi Anthony
>
>
>> On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko wrote:
>>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>>>
>>> This patch adds basic support for configuring and assisting virtio-disk
>>> backend (emualator) which is intended to run out of Qemu and could be
>>> run in any domain.
>>> Although the Virtio block device is quite different from traditional
>>> Xen PV block device (vbd) from the toolstack point of view:
>>> - as the frontend is virtio-blk which is not a Xenbus driver, nothing
>>> written to Xenstore are fetched by the frontend (the vdev is not
>>> passed to the frontend)
>>> - the ring-ref/event-channel are not used for the backend<->frontend
>>> communication, the proposed IPC for Virtio is IOREQ/DM
>>> it is still a "block device" and ought to be integrated in existing
>>> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
>>> logic to deal with Virtio devices as well.
>> How backend are intended to be created? Is there something listening on
>> xenstore?
>>
>> You mention QEMU as been the backend, do you intend to have QEMU
>> listening on xenstore to create a virtio backend? Or maybe it is on the
>> command line? There is QMP as well, but it's probably a lot more
>> complicated as I think libxl needs refactoring for that.
>
>
> No, QEMU is not involved there. The backend is a standalone application,
> it is launched from the command line. The backend reads the Xenstore to get
> the configuration and to detect when guest with the frontend is
> created/destroyed.
I think this should be reflected somehow in the configuration, as I
expect qemu might gain this functionality in the future.
I'm wondering whether we shouldn't split the backend from the protocol
(or specification?). Something like "protocol=virtio" (default would be
e.g. "xen") and then you could add "backend=external" for your use case?
We could later expand that to "backend=qemu" or "backend=<script-path>".
Juergen
[-- Attachment #1.1.2: OpenPGP public key --]
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-14 17:44 ` Oleksandr
2021-12-15 6:08 ` Juergen Gross
@ 2021-12-15 13:02 ` Oleksandr
1 sibling, 0 replies; 20+ messages in thread
From: Oleksandr @ 2021-12-15 13:02 UTC (permalink / raw)
To: Anthony PERARD
Cc: xen-devel, Oleksandr Tyshchenko, Wei Liu, George Dunlap,
Nick Rosbrook, Juergen Gross, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
On 14.12.21 19:44, Oleksandr wrote:
Hi Anthony
>
> On 14.12.21 18:03, Anthony PERARD wrote:
>
> Hi Anthony
>
>
>> On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko wrote:
>>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>>>
>>> This patch adds basic support for configuring and assisting virtio-disk
>>> backend (emualator) which is intended to run out of Qemu and could be
>>> run in any domain.
>>> Although the Virtio block device is quite different from traditional
>>> Xen PV block device (vbd) from the toolstack point of view:
>>> - as the frontend is virtio-blk which is not a Xenbus driver, nothing
>>> written to Xenstore are fetched by the frontend (the vdev is not
>>> passed to the frontend)
>>> - the ring-ref/event-channel are not used for the backend<->frontend
>>> communication, the proposed IPC for Virtio is IOREQ/DM
>>> it is still a "block device" and ought to be integrated in existing
>>> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
>>> logic to deal with Virtio devices as well.
>> How backend are intended to be created? Is there something listening on
>> xenstore?
>>
>> You mention QEMU as been the backend, do you intend to have QEMU
>> listening on xenstore to create a virtio backend? Or maybe it is on the
>> command line? There is QMP as well, but it's probably a lot more
>> complicated as I think libxl needs refactoring for that.
>
>
> No, QEMU is not involved there. The backend is a standalone application,
> it is launched from the command line. The backend reads the Xenstore
> to get
> the configuration and to detect when guest with the frontend is
> created/destroyed.
>
>
>>
>>> Besides introducing new disk backend type (LIBXL_DISK_BACKEND_VIRTIO)
>>> introduce new device kind (LIBXL__DEVICE_KIND_VIRTIO_DISK) as current
>>> one (LIBXL__DEVICE_KIND_VBD) doesn't fit into Virtio disk model.
>>>
>>> In order to inform the toolstack that Virtio disk needs to be used
>>> extend "disk" configuration by introducing new "virtio" flag.
>>> An example of domain configuration:
>>> disk = [ 'backend=DomD, phy:/dev/mmcblk1p3, xvda1, rw, virtio' ]
>> This new "virtio" flags feels strange. Would having something like
>> "backendtype=virtio" works?
>
>
> IIRC I considered "backendtype=virtio" option, but decided to go "an
> extra virtio flag" route, however I don't remember what exactly
> affected my decision.
> But, I see your point and agree, I will analyze whether we can use
> "backendtype=virtio", I hope that we can, but need to make sure.
I have just rechecked/experimented, we can use "backendtype=virtio"
instead of an extra "virtio" flags.
disk = [ 'backend=DomD, phy:/dev/mmcblk0p3, xvda1, backendtype=virtio' ]
Also backendtype section in xl-disk-configuration.5.pod.in really wants
updating as
at least the first sentence is not true for virtio backend:
"This does not affect the guest's view of the device. It controls
which software implementation of the Xen backend driver is used."
So shall I go this direction?
>
>
>>
>>> Please note, this patch is not enough for virtio-disk to work
>>> on Xen (Arm), as for every Virtio device (including disk) we need
>>> to allocate Virtio MMIO params (IRQ and memory region) and pass
>>> them to the backend, also update Guest device-tree. The subsequent
>>> patch will add these missing bits. For the current patch,
>>> the default "irq" and "base" are just written to the Xenstore.
>> This feels like the patches are in the wrong order. I don't think it is
>> a good idea to allow to create broken configuration until a follow-up
>> patch fixes things.
>
> Yes, I also think this is not an ideal splitting, so I decided to
> write a few sentences to draw reviewer's attention to this.
> The problem is that second patch adds Arm bits which are local to
> libs/light/libxl_arm.c and if I put it before the current one I will
> break the bisectability
> as there will be no callers yet.
>
>
>>
>>> diff --git a/tools/xl/xl_block.c b/tools/xl/xl_block.c
>>> index 70eed43..50a4d45 100644
>>> --- a/tools/xl/xl_block.c
>>> +++ b/tools/xl/xl_block.c
>>> @@ -50,6 +50,11 @@ int main_blockattach(int argc, char **argv)
>>> return 0;
>>> }
>>> + if (disk.virtio) {
>>> + fprintf(stderr, "block-attach is not supported for Virtio
>>> device\n");
>>> + return 1;
>>> + }
>> This might not be the right place. libxl might want to prevent hotplug
>> instead.
>
> Could you please point me the right place where to prevent hotplug?
>
>
> Thank you.
>
>
>>
>> Thanks,
>>
--
Regards,
Oleksandr Tyshchenko
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-15 6:08 ` Juergen Gross
@ 2021-12-15 15:02 ` Oleksandr
2021-12-15 15:58 ` Juergen Gross
0 siblings, 1 reply; 20+ messages in thread
From: Oleksandr @ 2021-12-15 15:02 UTC (permalink / raw)
To: Juergen Gross
Cc: Anthony PERARD, xen-devel, Oleksandr Tyshchenko, Wei Liu,
George Dunlap, Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
On 15.12.21 08:08, Juergen Gross wrote:
Hi Juergen
> On 14.12.21 18:44, Oleksandr wrote:
>>
>> On 14.12.21 18:03, Anthony PERARD wrote:
>>
>> Hi Anthony
>>
>>
>>> On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko wrote:
>>>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>>>>
>>>> This patch adds basic support for configuring and assisting
>>>> virtio-disk
>>>> backend (emualator) which is intended to run out of Qemu and could be
>>>> run in any domain.
>>>> Although the Virtio block device is quite different from traditional
>>>> Xen PV block device (vbd) from the toolstack point of view:
>>>> - as the frontend is virtio-blk which is not a Xenbus driver,
>>>> nothing
>>>> written to Xenstore are fetched by the frontend (the vdev is not
>>>> passed to the frontend)
>>>> - the ring-ref/event-channel are not used for the backend<->frontend
>>>> communication, the proposed IPC for Virtio is IOREQ/DM
>>>> it is still a "block device" and ought to be integrated in existing
>>>> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
>>>> logic to deal with Virtio devices as well.
>>> How backend are intended to be created? Is there something listening on
>>> xenstore?
>>>
>>> You mention QEMU as been the backend, do you intend to have QEMU
>>> listening on xenstore to create a virtio backend? Or maybe it is on the
>>> command line? There is QMP as well, but it's probably a lot more
>>> complicated as I think libxl needs refactoring for that.
>>
>>
>> No, QEMU is not involved there. The backend is a standalone application,
>> it is launched from the command line. The backend reads the Xenstore
>> to get
>> the configuration and to detect when guest with the frontend is
>> created/destroyed.
>
> I think this should be reflected somehow in the configuration, as I
> expect qemu might gain this functionality in the future.
I understand this and agree in general (however I am wondering whether
this can be postponed until it is actually needed), but ...
>
>
> I'm wondering whether we shouldn't split the backend from the protocol
> (or specification?). Something like "protocol=virtio" (default would be
> e.g. "xen") and then you could add "backend=external" for your use case?
... I am afraid, I didn't get the idea. Are we speaking about the (new?)
disk configuration options
here or these are not disk specific things at all and to be applicable
for all possible backends?
If the former, then could the new backendtype simply do the job? For
example, "backendtype=virtio_external" for our current use-case and
"backendtype=virtio_qemu"
for the possible future use-cases? Could you please clarify the idea.
Thank you.
> We could later expand that to "backend=qemu" or "backend=<script-path>".
>
>
> Juergen
--
Regards,
Oleksandr Tyshchenko
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-15 15:02 ` Oleksandr
@ 2021-12-15 15:58 ` Juergen Gross
2021-12-15 21:36 ` Oleksandr
2022-06-24 12:45 ` George Dunlap
0 siblings, 2 replies; 20+ messages in thread
From: Juergen Gross @ 2021-12-15 15:58 UTC (permalink / raw)
To: Oleksandr
Cc: Anthony PERARD, xen-devel, Oleksandr Tyshchenko, Wei Liu,
George Dunlap, Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
[-- Attachment #1.1.1: Type: text/plain, Size: 4424 bytes --]
On 15.12.21 16:02, Oleksandr wrote:
>
> On 15.12.21 08:08, Juergen Gross wrote:
>
> Hi Juergen
>
>> On 14.12.21 18:44, Oleksandr wrote:
>>>
>>> On 14.12.21 18:03, Anthony PERARD wrote:
>>>
>>> Hi Anthony
>>>
>>>
>>>> On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko wrote:
>>>>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>>>>>
>>>>> This patch adds basic support for configuring and assisting
>>>>> virtio-disk
>>>>> backend (emualator) which is intended to run out of Qemu and could be
>>>>> run in any domain.
>>>>> Although the Virtio block device is quite different from traditional
>>>>> Xen PV block device (vbd) from the toolstack point of view:
>>>>> - as the frontend is virtio-blk which is not a Xenbus driver,
>>>>> nothing
>>>>> written to Xenstore are fetched by the frontend (the vdev is not
>>>>> passed to the frontend)
>>>>> - the ring-ref/event-channel are not used for the backend<->frontend
>>>>> communication, the proposed IPC for Virtio is IOREQ/DM
>>>>> it is still a "block device" and ought to be integrated in existing
>>>>> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
>>>>> logic to deal with Virtio devices as well.
>>>> How backend are intended to be created? Is there something listening on
>>>> xenstore?
>>>>
>>>> You mention QEMU as been the backend, do you intend to have QEMU
>>>> listening on xenstore to create a virtio backend? Or maybe it is on the
>>>> command line? There is QMP as well, but it's probably a lot more
>>>> complicated as I think libxl needs refactoring for that.
>>>
>>>
>>> No, QEMU is not involved there. The backend is a standalone application,
>>> it is launched from the command line. The backend reads the Xenstore
>>> to get
>>> the configuration and to detect when guest with the frontend is
>>> created/destroyed.
>>
>> I think this should be reflected somehow in the configuration, as I
>> expect qemu might gain this functionality in the future.
>
> I understand this and agree in general (however I am wondering whether
> this can be postponed until it is actually needed), but ...
This might lead to the need to support some "legacy" options in future.
I think we should at least think whether these scheme will cover (or
prohibit) extensions which are already on the horizon.
>> I'm wondering whether we shouldn't split the backend from the protocol
>> (or specification?). Something like "protocol=virtio" (default would be
>> e.g. "xen") and then you could add "backend=external" for your use case?
>
> ... I am afraid, I didn't get the idea. Are we speaking about the (new?)
> disk configuration options
> here or these are not disk specific things at all and to be applicable
> for all possible backends?
I was talking of a general approach using the disk as an example. For
disks it is just rather obvious.
> If the former, then could the new backendtype simply do the job? For
> example, "backendtype=virtio_external" for our current use-case and
> "backendtype=virtio_qemu"
> for the possible future use-cases? Could you please clarify the idea.
I want to avoid overloading the backendtype with information which is
in general not really related by the backend. You can have a qemu based
qdisk backend serving a Xen PV-disk (like today) or a virtio disk.
A similar approach has been chosen for the disk format: it is not part
of the backend, but a parameter of its own. This way e.g. the qdisk
backend can use the original qdisk format, or the qcow format.
In practice we are having something like the "protocol" already today:
the disk device name is encoding that ("xvd*" is a Xen PV disk, while
"sd*" is an emulated SCSI disk, which happens to be presented to the
guest as "xvd*", too). And this is an additional information not
related to the backendtype.
So we have basically the following configuration items, which are
orthogonal to each other (some combinations might not make sense,
but in theory most would be possible):
1. protocol: emulated (not PV), Xen (like today), virtio
2. backendtype: phy (blkback), qdisk (qemu), other (e.g. a daemon)
3. format: raw, qcow, qcow2, vhd, qed
The combination virtio+phy would be equivalent to vhost, BTW. And
virtio+other might even use vhost-user, depending on the daemon.
Juergen
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-15 15:58 ` Juergen Gross
@ 2021-12-15 21:36 ` Oleksandr
2021-12-17 15:26 ` Juergen Gross
2022-06-24 12:45 ` George Dunlap
1 sibling, 1 reply; 20+ messages in thread
From: Oleksandr @ 2021-12-15 21:36 UTC (permalink / raw)
To: Juergen Gross
Cc: Anthony PERARD, xen-devel, Oleksandr Tyshchenko, Wei Liu,
George Dunlap, Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
On 15.12.21 17:58, Juergen Gross wrote:
Hi Juergen
> On 15.12.21 16:02, Oleksandr wrote:
>>
>> On 15.12.21 08:08, Juergen Gross wrote:
>>
>> Hi Juergen
>>
>>> On 14.12.21 18:44, Oleksandr wrote:
>>>>
>>>> On 14.12.21 18:03, Anthony PERARD wrote:
>>>>
>>>> Hi Anthony
>>>>
>>>>
>>>>> On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko wrote:
>>>>>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>>>>>>
>>>>>> This patch adds basic support for configuring and assisting
>>>>>> virtio-disk
>>>>>> backend (emualator) which is intended to run out of Qemu and
>>>>>> could be
>>>>>> run in any domain.
>>>>>> Although the Virtio block device is quite different from traditional
>>>>>> Xen PV block device (vbd) from the toolstack point of view:
>>>>>> - as the frontend is virtio-blk which is not a Xenbus driver,
>>>>>> nothing
>>>>>> written to Xenstore are fetched by the frontend (the vdev is not
>>>>>> passed to the frontend)
>>>>>> - the ring-ref/event-channel are not used for the
>>>>>> backend<->frontend
>>>>>> communication, the proposed IPC for Virtio is IOREQ/DM
>>>>>> it is still a "block device" and ought to be integrated in existing
>>>>>> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
>>>>>> logic to deal with Virtio devices as well.
>>>>> How backend are intended to be created? Is there something
>>>>> listening on
>>>>> xenstore?
>>>>>
>>>>> You mention QEMU as been the backend, do you intend to have QEMU
>>>>> listening on xenstore to create a virtio backend? Or maybe it is
>>>>> on the
>>>>> command line? There is QMP as well, but it's probably a lot more
>>>>> complicated as I think libxl needs refactoring for that.
>>>>
>>>>
>>>> No, QEMU is not involved there. The backend is a standalone
>>>> application,
>>>> it is launched from the command line. The backend reads the
>>>> Xenstore to get
>>>> the configuration and to detect when guest with the frontend is
>>>> created/destroyed.
>>>
>>> I think this should be reflected somehow in the configuration, as I
>>> expect qemu might gain this functionality in the future.
>>
>> I understand this and agree in general (however I am wondering
>> whether this can be postponed until it is actually needed), but ...
>
> This might lead to the need to support some "legacy" options in future.
> I think we should at least think whether these scheme will cover (or
> prohibit) extensions which are already on the horizon.
ok
>
>
>>> I'm wondering whether we shouldn't split the backend from the protocol
>>> (or specification?). Something like "protocol=virtio" (default would be
>>> e.g. "xen") and then you could add "backend=external" for your use
>>> case?
>>
>> ... I am afraid, I didn't get the idea. Are we speaking about the
>> (new?) disk configuration options
>> here or these are not disk specific things at all and to be
>> applicable for all possible backends?
>
> I was talking of a general approach using the disk as an example. For
> disks it is just rather obvious.
>
>> If the former, then could the new backendtype simply do the job? For
>> example, "backendtype=virtio_external" for our current use-case and
>> "backendtype=virtio_qemu"
>> for the possible future use-cases? Could you please clarify the idea.
>
> I want to avoid overloading the backendtype with information which is
> in general not really related by the backend. You can have a qemu based
> qdisk backend serving a Xen PV-disk (like today) or a virtio disk.
>
> A similar approach has been chosen for the disk format: it is not part
> of the backend, but a parameter of its own. This way e.g. the qdisk
> backend can use the original qdisk format, or the qcow format.
>
> In practice we are having something like the "protocol" already today:
> the disk device name is encoding that ("xvd*" is a Xen PV disk, while
> "sd*" is an emulated SCSI disk, which happens to be presented to the
> guest as "xvd*", too). And this is an additional information not
> related to the backendtype.
>
> So we have basically the following configuration items, which are
> orthogonal to each other (some combinations might not make sense,
> but in theory most would be possible):
>
> 1. protocol: emulated (not PV), Xen (like today), virtio
>
> 2. backendtype: phy (blkback), qdisk (qemu), other (e.g. a daemon)
>
> 3. format: raw, qcow, qcow2, vhd, qed
>
> The combination virtio+phy would be equivalent to vhost, BTW. And
> virtio+other might even use vhost-user, depending on the daemon.
yes, BTW the combination virtio+other is close to our use-case.
Thank you for the detailed explanation, now I see your point why using
backendtype=virtio is not flexible option in the long term
and why we would want/need to an extra configuration option such as
protocol, etc. I think, it makes sense and would be correct.
If we take a disk as an example, then from the configuration PoV we will
need to:
- add an optional "protocol" option
- add new backendtype: external/other/daemon/etc.
This seems to cover all possible combinations describe above (although I
agree that some of them might not make sense). Is my understanding correct?
Unfortunately, disk configuration/management code is spread over
multiple sources (including auto-generated) in the toolstack which is
not so easy to follow (at least to me
who is not familiar enough with all this stuff), but anyway may I please
clarify what is the minimum required amount of things that I need to do
in order to get this basic virtio-mmio
support series accepted?
>
>
>
> Juergen
--
Regards,
Oleksandr Tyshchenko
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-15 21:36 ` Oleksandr
@ 2021-12-17 15:26 ` Juergen Gross
2021-12-17 16:50 ` Oleksandr
0 siblings, 1 reply; 20+ messages in thread
From: Juergen Gross @ 2021-12-17 15:26 UTC (permalink / raw)
To: Oleksandr
Cc: Anthony PERARD, xen-devel, Oleksandr Tyshchenko, Wei Liu,
George Dunlap, Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
[-- Attachment #1.1.1: Type: text/plain, Size: 6490 bytes --]
On 15.12.21 22:36, Oleksandr wrote:
>
> On 15.12.21 17:58, Juergen Gross wrote:
>
>
> Hi Juergen
>
>
>> On 15.12.21 16:02, Oleksandr wrote:
>>>
>>> On 15.12.21 08:08, Juergen Gross wrote:
>>>
>>> Hi Juergen
>>>
>>>> On 14.12.21 18:44, Oleksandr wrote:
>>>>>
>>>>> On 14.12.21 18:03, Anthony PERARD wrote:
>>>>>
>>>>> Hi Anthony
>>>>>
>>>>>
>>>>>> On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko wrote:
>>>>>>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>>>>>>>
>>>>>>> This patch adds basic support for configuring and assisting
>>>>>>> virtio-disk
>>>>>>> backend (emualator) which is intended to run out of Qemu and
>>>>>>> could be
>>>>>>> run in any domain.
>>>>>>> Although the Virtio block device is quite different from traditional
>>>>>>> Xen PV block device (vbd) from the toolstack point of view:
>>>>>>> - as the frontend is virtio-blk which is not a Xenbus driver,
>>>>>>> nothing
>>>>>>> written to Xenstore are fetched by the frontend (the vdev is not
>>>>>>> passed to the frontend)
>>>>>>> - the ring-ref/event-channel are not used for the
>>>>>>> backend<->frontend
>>>>>>> communication, the proposed IPC for Virtio is IOREQ/DM
>>>>>>> it is still a "block device" and ought to be integrated in existing
>>>>>>> "disk" handling. So, re-use (and adapt) "disk" parsing/configuration
>>>>>>> logic to deal with Virtio devices as well.
>>>>>> How backend are intended to be created? Is there something
>>>>>> listening on
>>>>>> xenstore?
>>>>>>
>>>>>> You mention QEMU as been the backend, do you intend to have QEMU
>>>>>> listening on xenstore to create a virtio backend? Or maybe it is
>>>>>> on the
>>>>>> command line? There is QMP as well, but it's probably a lot more
>>>>>> complicated as I think libxl needs refactoring for that.
>>>>>
>>>>>
>>>>> No, QEMU is not involved there. The backend is a standalone
>>>>> application,
>>>>> it is launched from the command line. The backend reads the
>>>>> Xenstore to get
>>>>> the configuration and to detect when guest with the frontend is
>>>>> created/destroyed.
>>>>
>>>> I think this should be reflected somehow in the configuration, as I
>>>> expect qemu might gain this functionality in the future.
>>>
>>> I understand this and agree in general (however I am wondering
>>> whether this can be postponed until it is actually needed), but ...
>>
>> This might lead to the need to support some "legacy" options in future.
>> I think we should at least think whether these scheme will cover (or
>> prohibit) extensions which are already on the horizon.
>
> ok
>
>
>>
>>
>>>> I'm wondering whether we shouldn't split the backend from the protocol
>>>> (or specification?). Something like "protocol=virtio" (default would be
>>>> e.g. "xen") and then you could add "backend=external" for your use
>>>> case?
>>>
>>> ... I am afraid, I didn't get the idea. Are we speaking about the
>>> (new?) disk configuration options
>>> here or these are not disk specific things at all and to be
>>> applicable for all possible backends?
>>
>> I was talking of a general approach using the disk as an example. For
>> disks it is just rather obvious.
>>
>>> If the former, then could the new backendtype simply do the job? For
>>> example, "backendtype=virtio_external" for our current use-case and
>>> "backendtype=virtio_qemu"
>>> for the possible future use-cases? Could you please clarify the idea.
>>
>> I want to avoid overloading the backendtype with information which is
>> in general not really related by the backend. You can have a qemu based
>> qdisk backend serving a Xen PV-disk (like today) or a virtio disk.
>>
>> A similar approach has been chosen for the disk format: it is not part
>> of the backend, but a parameter of its own. This way e.g. the qdisk
>> backend can use the original qdisk format, or the qcow format.
>>
>> In practice we are having something like the "protocol" already today:
>> the disk device name is encoding that ("xvd*" is a Xen PV disk, while
>> "sd*" is an emulated SCSI disk, which happens to be presented to the
>> guest as "xvd*", too). And this is an additional information not
>> related to the backendtype.
>>
>> So we have basically the following configuration items, which are
>> orthogonal to each other (some combinations might not make sense,
>> but in theory most would be possible):
>>
>> 1. protocol: emulated (not PV), Xen (like today), virtio
>>
>> 2. backendtype: phy (blkback), qdisk (qemu), other (e.g. a daemon)
>>
>> 3. format: raw, qcow, qcow2, vhd, qed
>>
>> The combination virtio+phy would be equivalent to vhost, BTW. And
>> virtio+other might even use vhost-user, depending on the daemon.
> yes, BTW the combination virtio+other is close to our use-case.
>
>
> Thank you for the detailed explanation, now I see your point why using
> backendtype=virtio is not flexible option in the long term
> and why we would want/need to an extra configuration option such as
> protocol, etc. I think, it makes sense and would be correct.
>
> If we take a disk as an example, then from the configuration PoV we will
> need to:
> - add an optional "protocol" option
I'm not sure regarding the name of the option. "protocol" was just a
suggestion by me.
> - add new backendtype: external/other/daemon/etc.
> This seems to cover all possible combinations describe above (although I
> agree that some of them might not make sense). Is my understanding correct?
Yes.
> Unfortunately, disk configuration/management code is spread over
> multiple sources (including auto-generated) in the toolstack which is
> not so easy to follow (at least to me
> who is not familiar enough with all this stuff), but anyway may I please
> clarify what is the minimum required amount of things that I need to do
> in order to get this basic virtio-mmio
> support series accepted?
I'd say we should first get consensus that others agree with my
suggestion. If so, I guess adding a general "protocol" (or whatever
the name will be) attribute to struct libxl_device_disk (and maybe
to other devices, too?) should be the first step.
It might even be a godd idea to use "virtio-mmio" as the protocol string
for differentiating it from e.g. "virtio-pci".
The rest should be rather straight forward similar to your current
approach.
Juergen
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-17 15:26 ` Juergen Gross
@ 2021-12-17 16:50 ` Oleksandr
2021-12-21 16:46 ` Anthony PERARD
0 siblings, 1 reply; 20+ messages in thread
From: Oleksandr @ 2021-12-17 16:50 UTC (permalink / raw)
To: Juergen Gross, xen-devel
Cc: Anthony PERARD, Oleksandr Tyshchenko, Wei Liu, George Dunlap,
Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
On 17.12.21 17:26, Juergen Gross wrote:
Hi Juergen, all.
> On 15.12.21 22:36, Oleksandr wrote:
>>
>> On 15.12.21 17:58, Juergen Gross wrote:
>>
>>
>> Hi Juergen
>>
>>
>>> On 15.12.21 16:02, Oleksandr wrote:
>>>>
>>>> On 15.12.21 08:08, Juergen Gross wrote:
>>>>
>>>> Hi Juergen
>>>>
>>>>> On 14.12.21 18:44, Oleksandr wrote:
>>>>>>
>>>>>> On 14.12.21 18:03, Anthony PERARD wrote:
>>>>>>
>>>>>> Hi Anthony
>>>>>>
>>>>>>
>>>>>>> On Wed, Dec 08, 2021 at 06:59:43PM +0200, Oleksandr Tyshchenko
>>>>>>> wrote:
>>>>>>>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>>>>>>>>
>>>>>>>> This patch adds basic support for configuring and assisting
>>>>>>>> virtio-disk
>>>>>>>> backend (emualator) which is intended to run out of Qemu and
>>>>>>>> could be
>>>>>>>> run in any domain.
>>>>>>>> Although the Virtio block device is quite different from
>>>>>>>> traditional
>>>>>>>> Xen PV block device (vbd) from the toolstack point of view:
>>>>>>>> - as the frontend is virtio-blk which is not a Xenbus driver,
>>>>>>>> nothing
>>>>>>>> written to Xenstore are fetched by the frontend (the vdev
>>>>>>>> is not
>>>>>>>> passed to the frontend)
>>>>>>>> - the ring-ref/event-channel are not used for the
>>>>>>>> backend<->frontend
>>>>>>>> communication, the proposed IPC for Virtio is IOREQ/DM
>>>>>>>> it is still a "block device" and ought to be integrated in
>>>>>>>> existing
>>>>>>>> "disk" handling. So, re-use (and adapt) "disk"
>>>>>>>> parsing/configuration
>>>>>>>> logic to deal with Virtio devices as well.
>>>>>>> How backend are intended to be created? Is there something
>>>>>>> listening on
>>>>>>> xenstore?
>>>>>>>
>>>>>>> You mention QEMU as been the backend, do you intend to have QEMU
>>>>>>> listening on xenstore to create a virtio backend? Or maybe it is
>>>>>>> on the
>>>>>>> command line? There is QMP as well, but it's probably a lot more
>>>>>>> complicated as I think libxl needs refactoring for that.
>>>>>>
>>>>>>
>>>>>> No, QEMU is not involved there. The backend is a standalone
>>>>>> application,
>>>>>> it is launched from the command line. The backend reads the
>>>>>> Xenstore to get
>>>>>> the configuration and to detect when guest with the frontend is
>>>>>> created/destroyed.
>>>>>
>>>>> I think this should be reflected somehow in the configuration, as I
>>>>> expect qemu might gain this functionality in the future.
>>>>
>>>> I understand this and agree in general (however I am wondering
>>>> whether this can be postponed until it is actually needed), but ...
>>>
>>> This might lead to the need to support some "legacy" options in future.
>>> I think we should at least think whether these scheme will cover (or
>>> prohibit) extensions which are already on the horizon.
>>
>> ok
>>
>>
>>>
>>>
>>>>> I'm wondering whether we shouldn't split the backend from the
>>>>> protocol
>>>>> (or specification?). Something like "protocol=virtio" (default
>>>>> would be
>>>>> e.g. "xen") and then you could add "backend=external" for your use
>>>>> case?
>>>>
>>>> ... I am afraid, I didn't get the idea. Are we speaking about the
>>>> (new?) disk configuration options
>>>> here or these are not disk specific things at all and to be
>>>> applicable for all possible backends?
>>>
>>> I was talking of a general approach using the disk as an example. For
>>> disks it is just rather obvious.
>>>
>>>> If the former, then could the new backendtype simply do the job?
>>>> For example, "backendtype=virtio_external" for our current use-case
>>>> and "backendtype=virtio_qemu"
>>>> for the possible future use-cases? Could you please clarify the idea.
>>>
>>> I want to avoid overloading the backendtype with information which is
>>> in general not really related by the backend. You can have a qemu based
>>> qdisk backend serving a Xen PV-disk (like today) or a virtio disk.
>>>
>>> A similar approach has been chosen for the disk format: it is not part
>>> of the backend, but a parameter of its own. This way e.g. the qdisk
>>> backend can use the original qdisk format, or the qcow format.
>>>
>>> In practice we are having something like the "protocol" already today:
>>> the disk device name is encoding that ("xvd*" is a Xen PV disk, while
>>> "sd*" is an emulated SCSI disk, which happens to be presented to the
>>> guest as "xvd*", too). And this is an additional information not
>>> related to the backendtype.
>>>
>>> So we have basically the following configuration items, which are
>>> orthogonal to each other (some combinations might not make sense,
>>> but in theory most would be possible):
>>>
>>> 1. protocol: emulated (not PV), Xen (like today), virtio
>>>
>>> 2. backendtype: phy (blkback), qdisk (qemu), other (e.g. a daemon)
>>>
>>> 3. format: raw, qcow, qcow2, vhd, qed
>>>
>>> The combination virtio+phy would be equivalent to vhost, BTW. And
>>> virtio+other might even use vhost-user, depending on the daemon.
>> yes, BTW the combination virtio+other is close to our use-case.
>>
>>
>> Thank you for the detailed explanation, now I see your point why
>> using backendtype=virtio is not flexible option in the long term
>> and why we would want/need to an extra configuration option such as
>> protocol, etc. I think, it makes sense and would be correct.
>>
>> If we take a disk as an example, then from the configuration PoV we
>> will need to:
>> - add an optional "protocol" option
>
> I'm not sure regarding the name of the option. "protocol" was just a
> suggestion by me.
Yes, personally I would be fine with either "protocol" or
"specification", with a little preference for the former. What other
people think of the name?
>
>> - add new backendtype: external/other/daemon/etc.
>> This seems to cover all possible combinations describe above
>> (although I agree that some of them might not make sense). Is my
>> understanding correct?
>
> Yes.
ok, thank you for confirming.
>
>> Unfortunately, disk configuration/management code is spread over
>> multiple sources (including auto-generated) in the toolstack which is
>> not so easy to follow (at least to me
>> who is not familiar enough with all this stuff), but anyway may I
>> please clarify what is the minimum required amount of things that I
>> need to do in order to get this basic virtio-mmio
>> support series accepted?
>
> I'd say we should first get consensus that others agree with my
> suggestion.
This is fair. Personally I share your opinion (what you propose sounds
reasonable to me in general). Are there any other opinions? Any feedback
would be highly appreciated.
> If so, I guess adding a general "protocol" (or whatever
> the name will be) attribute to struct libxl_device_disk (and maybe
> to other devices, too?) should be the first step.
Agree, I would start with the disk and see how it would look like.
>
> It might even be a godd idea to use "virtio-mmio" as the protocol string
> for differentiating it from e.g. "virtio-pci".
Makes sense, I thought the same.
>
> The rest should be rather straight forward similar to your current
> approach.
Good.
Thank you.
>
>
> Juergen
--
Regards,
Oleksandr Tyshchenko
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-17 16:50 ` Oleksandr
@ 2021-12-21 16:46 ` Anthony PERARD
2021-12-22 9:45 ` Oleksandr
2022-01-06 8:06 ` Juergen Gross
0 siblings, 2 replies; 20+ messages in thread
From: Anthony PERARD @ 2021-12-21 16:46 UTC (permalink / raw)
To: Oleksandr
Cc: Juergen Gross, xen-devel, Oleksandr Tyshchenko, Wei Liu,
George Dunlap, Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
On Fri, Dec 17, 2021 at 06:50:02PM +0200, Oleksandr wrote:
> On 17.12.21 17:26, Juergen Gross wrote:
> > On 15.12.21 22:36, Oleksandr wrote:
> > > On 15.12.21 17:58, Juergen Gross wrote:
> > > > In practice we are having something like the "protocol" already today:
> > > > the disk device name is encoding that ("xvd*" is a Xen PV disk, while
> > > > "sd*" is an emulated SCSI disk, which happens to be presented to the
> > > > guest as "xvd*", too). And this is an additional information not
> > > > related to the backendtype.
You mean in theory? ;-) In practice, xvd* is the same as hd* (or sd*?).
I tried once to have xvd* mean PV disk only, but the patch was rejected.
So at the moment, we always get an emulated disk, we can't have PV disk
alone, at least on x86.
> > > >
> > > > So we have basically the following configuration items, which are
> > > > orthogonal to each other (some combinations might not make sense,
> > > > but in theory most would be possible):
> > > >
> > > > 1. protocol: emulated (not PV), Xen (like today), virtio
> > > >
> > > > 2. backendtype: phy (blkback), qdisk (qemu), other (e.g. a daemon)
> > > >
> > > > 3. format: raw, qcow, qcow2, vhd, qed
> > > >
> > > > The combination virtio+phy would be equivalent to vhost, BTW. And
> > > > virtio+other might even use vhost-user, depending on the daemon.
> > > yes, BTW the combination virtio+other is close to our use-case.
> > >
> > >
> > > Thank you for the detailed explanation, now I see your point why
> > > using backendtype=virtio is not flexible option in the long term
> > > and why we would want/need to an extra configuration option such as
> > > protocol, etc. I think, it makes sense and would be correct.
> > >
> > > If we take a disk as an example, then from the configuration PoV we
> > > will need to:
> > > - add an optional "protocol" option
> >
> > I'm not sure regarding the name of the option. "protocol" was just a
> > suggestion by me.
>
> Yes, personally I would be fine with either "protocol" or "specification",
> with a little preference for the former. What other people think of the
> name?
I don't have a better idea. "protocol" sound fine, as long as the description of
this new field is about how a guest kernel will communicate with the
backend.
We could start with "default" and "virtio-mmio" as options. "default" is
what we have now and usually mean emulated+xen-pv.
> >
> > > - add new backendtype: external/other/daemon/etc.
> > > This seems to cover all possible combinations describe above
> > > (although I agree that some of them might not make sense). Is my
> > > understanding correct?
> >
> > Yes.
>
> ok, thank you for confirming.
>
> > > Unfortunately, disk configuration/management code is spread over
> > > multiple sources (including auto-generated) in the toolstack which
> > > is not so easy to follow (at least to me
> > > who is not familiar enough with all this stuff), but anyway may I
> > > please clarify what is the minimum required amount of things that I
> > > need to do in order to get this basic virtio-mmio
> > > support series accepted?
> >
> > I'd say we should first get consensus that others agree with my
> > suggestion.
> This is fair. Personally I share your opinion (what you propose sounds
> reasonable to me in general). Are there any other opinions? Any feedback
> would be highly appreciated.
The new proposed property sound good to me as well.
Thanks,
--
Anthony PERARD
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-21 16:46 ` Anthony PERARD
@ 2021-12-22 9:45 ` Oleksandr
2022-01-06 8:06 ` Juergen Gross
1 sibling, 0 replies; 20+ messages in thread
From: Oleksandr @ 2021-12-22 9:45 UTC (permalink / raw)
To: Anthony PERARD, Juergen Gross
Cc: xen-devel, Oleksandr Tyshchenko, Wei Liu, George Dunlap,
Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
On 21.12.21 18:46, Anthony PERARD wrote:
Hi Anthony, Juergen
> On Fri, Dec 17, 2021 at 06:50:02PM +0200, Oleksandr wrote:
>> On 17.12.21 17:26, Juergen Gross wrote:
>>> On 15.12.21 22:36, Oleksandr wrote:
>>>> On 15.12.21 17:58, Juergen Gross wrote:
>>>>> In practice we are having something like the "protocol" already today:
>>>>> the disk device name is encoding that ("xvd*" is a Xen PV disk, while
>>>>> "sd*" is an emulated SCSI disk, which happens to be presented to the
>>>>> guest as "xvd*", too). And this is an additional information not
>>>>> related to the backendtype.
> You mean in theory? ;-) In practice, xvd* is the same as hd* (or sd*?).
> I tried once to have xvd* mean PV disk only, but the patch was rejected.
> So at the moment, we always get an emulated disk, we can't have PV disk
> alone, at least on x86.
I guess this a question to Juergen?
>
>>>>> So we have basically the following configuration items, which are
>>>>> orthogonal to each other (some combinations might not make sense,
>>>>> but in theory most would be possible):
>>>>>
>>>>> 1. protocol: emulated (not PV), Xen (like today), virtio
>>>>>
>>>>> 2. backendtype: phy (blkback), qdisk (qemu), other (e.g. a daemon)
>>>>>
>>>>> 3. format: raw, qcow, qcow2, vhd, qed
>>>>>
>>>>> The combination virtio+phy would be equivalent to vhost, BTW. And
>>>>> virtio+other might even use vhost-user, depending on the daemon.
>>>> yes, BTW the combination virtio+other is close to our use-case.
>>>>
>>>>
>>>> Thank you for the detailed explanation, now I see your point why
>>>> using backendtype=virtio is not flexible option in the long term
>>>> and why we would want/need to an extra configuration option such as
>>>> protocol, etc. I think, it makes sense and would be correct.
>>>>
>>>> If we take a disk as an example, then from the configuration PoV we
>>>> will need to:
>>>> - add an optional "protocol" option
>>> I'm not sure regarding the name of the option. "protocol" was just a
>>> suggestion by me.
>> Yes, personally I would be fine with either "protocol" or "specification",
>> with a little preference for the former. What other people think of the
>> name?
> I don't have a better idea. "protocol" sound fine, as long as the description of
> this new field is about how a guest kernel will communicate with the
> backend.
yes, sure.
>
> We could start with "default" and "virtio-mmio" as options. "default" is
> what we have now and usually mean emulated+xen-pv.
ok, sounds good to me.
>
>>>> - add new backendtype: external/other/daemon/etc.
>>>> This seems to cover all possible combinations describe above
>>>> (although I agree that some of them might not make sense). Is my
>>>> understanding correct?
>>> Yes.
>> ok, thank you for confirming.
>>
>>>> Unfortunately, disk configuration/management code is spread over
>>>> multiple sources (including auto-generated) in the toolstack which
>>>> is not so easy to follow (at least to me
>>>> who is not familiar enough with all this stuff), but anyway may I
>>>> please clarify what is the minimum required amount of things that I
>>>> need to do in order to get this basic virtio-mmio
>>>> support series accepted?
>>> I'd say we should first get consensus that others agree with my
>>> suggestion.
>> This is fair. Personally I share your opinion (what you propose sounds
>> reasonable to me in general). Are there any other opinions? Any feedback
>> would be highly appreciated.
> The new proposed property sound good to me as well.
Great, thank you for the feedback.
>
> Thanks,
>
--
Regards,
Oleksandr Tyshchenko
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-21 16:46 ` Anthony PERARD
2021-12-22 9:45 ` Oleksandr
@ 2022-01-06 8:06 ` Juergen Gross
1 sibling, 0 replies; 20+ messages in thread
From: Juergen Gross @ 2022-01-06 8:06 UTC (permalink / raw)
To: Anthony PERARD, Oleksandr
Cc: xen-devel, Oleksandr Tyshchenko, Wei Liu, George Dunlap,
Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis
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On 21.12.21 17:46, Anthony PERARD wrote:
> On Fri, Dec 17, 2021 at 06:50:02PM +0200, Oleksandr wrote:
>> On 17.12.21 17:26, Juergen Gross wrote:
>>> On 15.12.21 22:36, Oleksandr wrote:
>>>> On 15.12.21 17:58, Juergen Gross wrote:
>>>>> In practice we are having something like the "protocol" already today:
>>>>> the disk device name is encoding that ("xvd*" is a Xen PV disk, while
>>>>> "sd*" is an emulated SCSI disk, which happens to be presented to the
>>>>> guest as "xvd*", too). And this is an additional information not
>>>>> related to the backendtype.
>
> You mean in theory? ;-) In practice, xvd* is the same as hd* (or sd*?).
> I tried once to have xvd* mean PV disk only, but the patch was rejected.
> So at the moment, we always get an emulated disk, we can't have PV disk
> alone, at least on x86.
What?
Of course we can. Take any PV or PVH guest excluding dom0, and you'll
see that.
Juergen
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2021-12-15 15:58 ` Juergen Gross
2021-12-15 21:36 ` Oleksandr
@ 2022-06-24 12:45 ` George Dunlap
2022-06-24 13:12 ` Juergen Gross
1 sibling, 1 reply; 20+ messages in thread
From: George Dunlap @ 2022-06-24 12:45 UTC (permalink / raw)
To: Juergen Gross
Cc: Oleksandr, Anthony PERARD, xen-devel, Oleksandr Tyshchenko,
Wei Liu, Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis, George Dunlap
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On Wed, Dec 15, 2021 at 3:58 PM Juergen Gross <jgross@suse.com> wrote:
> On 15.12.21 16:02, Oleksandr wrote:
> In practice we are having something like the "protocol" already today:
> the disk device name is encoding that ("xvd*" is a Xen PV disk, while
> "sd*" is an emulated SCSI disk, which happens to be presented to the
> guest as "xvd*", too). And this is an additional information not
> related to the backendtype.
>
> So we have basically the following configuration items, which are
> orthogonal to each other (some combinations might not make sense,
> but in theory most would be possible):
>
> 1. protocol: emulated (not PV), Xen (like today), virtio
>
> 2. backendtype: phy (blkback), qdisk (qemu), other (e.g. a daemon)
>
> 3. format: raw, qcow, qcow2, vhd, qed
>
> The combination virtio+phy would be equivalent to vhost, BTW. And
> virtio+other might even use vhost-user, depending on the daemon.
>
Sorry to fly in here 7 months after the fact to quibble about something,
but since we're baking something into an external interface, I think it's
worth making sure we get it exactly right.
It seems to me that the current way that "backendtype" is used is to tell
libxl how to set up the connection. For "phy", it talks to the dom0
blkback driver, and hands it a file or some other physical device. For
qdisk, it talks to the QEMU which is already associated with the domain:
either the qdisk process started up when the PV/H domain was created, or
the emulator started up when the HVM guest was created. (Correct me if
I've made a mistake here.)
Given that, "other" is just wrong. The toolstack needs to know
*specifically* how to drive the thing that's going to be providing the
protocol. I'm not sure what you're expecting to use in this case, but
presumably if we're adding a third thing (in addition to blkback and QEMU),
then at some point we're going to be adding a fourth thing, and a fifth
thing as well. What do we call them? "Other other" and "other other
other"?
If we're planning on having a general interface for these daemons that are
going to be be virtio providers, we should come up with a specific name for
them as a class, and use that for the name.
Furthermore, "virtio+phy == vhost" is just wrong: phy means that libxl is
using blkback, and blkback can't speak the virtio protocol. If we want to
use vhost (or something like it), then it will need its own separate
backendtype.
-George
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH V6 1/2] libxl: Add support for Virtio disk configuration
2022-06-24 12:45 ` George Dunlap
@ 2022-06-24 13:12 ` Juergen Gross
0 siblings, 0 replies; 20+ messages in thread
From: Juergen Gross @ 2022-06-24 13:12 UTC (permalink / raw)
To: George Dunlap
Cc: Oleksandr, Anthony PERARD, xen-devel, Oleksandr Tyshchenko,
Wei Liu, Nick Rosbrook, Stefano Stabellini, Julien Grall,
Volodymyr Babchuk, Bertrand Marquis, George Dunlap
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On 24.06.22 14:45, George Dunlap wrote:
> On Wed, Dec 15, 2021 at 3:58 PM Juergen Gross <jgross@suse.com
> <mailto:jgross@suse.com>> wrote:
>
> On 15.12.21 16:02, Oleksandr wrote:
>
>
> In practice we are having something like the "protocol" already today:
> the disk device name is encoding that ("xvd*" is a Xen PV disk, while
> "sd*" is an emulated SCSI disk, which happens to be presented to the
> guest as "xvd*", too). And this is an additional information not
> related to the backendtype.
>
> So we have basically the following configuration items, which are
> orthogonal to each other (some combinations might not make sense,
> but in theory most would be possible):
>
> 1. protocol: emulated (not PV), Xen (like today), virtio
>
> 2. backendtype: phy (blkback), qdisk (qemu), other (e.g. a daemon)
>
> 3. format: raw, qcow, qcow2, vhd, qed
>
> The combination virtio+phy would be equivalent to vhost, BTW. And
> virtio+other might even use vhost-user, depending on the daemon.
>
>
> Sorry to fly in here 7 months after the fact to quibble about something, but
> since we're baking something into an external interface, I think it's worth
> making sure we get it exactly right.
>
> It seems to me that the current way that "backendtype" is used is to tell libxl
> how to set up the connection. For "phy", it talks to the dom0 blkback driver,
> and hands it a file or some other physical device. For qdisk, it talks to the
> QEMU which is already associated with the domain: either the qdisk process
> started up when the PV/H domain was created, or the emulator started up when the
> HVM guest was created. (Correct me if I've made a mistake here.)
>
> Given that, "other" is just wrong. The toolstack needs to know *specifically*
> how to drive the thing that's going to be providing the protocol. I'm not sure
> what you're expecting to use in this case, but presumably if we're adding a
> third thing (in addition to blkback and QEMU), then at some point we're going to
> be adding a fourth thing, and a fifth thing as well. What do we call them?
> "Other other" and "other other other"?
The idea was to allow an unspecified external component to be used. It
would only need information available in Xenstore and "do the right thing".
This allows to have custom backends without having to modify (lib)xl or
the config syntax in case a new one is being added.
In case Xenstore isn't enough for the needed information of a new backend,
a more specific backendtype would be needed.
> If we're planning on having a general interface for these daemons that are going
> to be be virtio providers, we should come up with a specific name for them as a
> class, and use that for the name.
>
> Furthermore, "virtio+phy == vhost" is just wrong: phy means that libxl is using
> blkback, and blkback can't speak the virtio protocol. If we want to use vhost
> (or something like it), then it will need its own separate backendtype.
Really? Today "virtio" + "phy" isn't used anywhere, as it currently makes no
sense. Just because "phy" has been used for blkback, it doesn't mean that
this needs to stay this way. With the new scheme, "xen+phy" means blkback,
while "virtio+phy" is yet undefined. Identifying "phy" with a "physical device",
it would make sense to use "virtio+phy" for vhost, as vhost-block is the
equivalent to blkback in the virtio world.
Juergen
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^ permalink raw reply [flat|nested] 20+ messages in thread
end of thread, other threads:[~2022-06-24 13:12 UTC | newest]
Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-12-08 16:59 [PATCH V6 0/2] Virtio support for toolstack on Arm (Was "IOREQ feature (+ virtio-mmio) on Arm") Oleksandr Tyshchenko
2021-12-08 16:59 ` [PATCH V6 1/2] libxl: Add support for Virtio disk configuration Oleksandr Tyshchenko
2021-12-09 6:50 ` Jiamei Xie
2021-12-14 16:03 ` Anthony PERARD
2021-12-14 17:44 ` Oleksandr
2021-12-15 6:08 ` Juergen Gross
2021-12-15 15:02 ` Oleksandr
2021-12-15 15:58 ` Juergen Gross
2021-12-15 21:36 ` Oleksandr
2021-12-17 15:26 ` Juergen Gross
2021-12-17 16:50 ` Oleksandr
2021-12-21 16:46 ` Anthony PERARD
2021-12-22 9:45 ` Oleksandr
2022-01-06 8:06 ` Juergen Gross
2022-06-24 12:45 ` George Dunlap
2022-06-24 13:12 ` Juergen Gross
2021-12-15 13:02 ` Oleksandr
2021-12-08 16:59 ` [PATCH V6 2/2] libxl: Introduce basic virtio-mmio support on Arm Oleksandr Tyshchenko
2021-12-09 6:03 ` Jiamei Xie
2021-12-09 6:34 ` Henry Wang
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