From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xen.org
Cc: Juergen Gross <jgross@suse.com>,
wei.liu2@citrix.com, stefano.stabellini@eu.citrix.com,
George.Dunlap@eu.citrix.com, ian.jackson@eu.citrix.com,
cyliu@suse.com
Subject: [PATCH v5 5/5] libxl: check for dynamic device model start required
Date: Wed, 30 Mar 2016 14:05:58 +0200 [thread overview]
Message-ID: <1459339558-29183-6-git-send-email-jgross@suse.com> (raw)
In-Reply-To: <1459339558-29183-1-git-send-email-jgross@suse.com>
Add a service routine checking whether a device model must be started
after adding a device to a domain.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
tools/libxl/libxl.c | 12 ++++++++++++
tools/libxl/libxl_dm.c | 22 ++++++++++++++++++++++
tools/libxl/libxl_internal.h | 3 +++
tools/libxl/libxl_pci.c | 3 +++
tools/libxl/libxl_pvusb.c | 6 ++++++
5 files changed, 46 insertions(+)
diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index bb6a689..6d4b5b4 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2084,6 +2084,9 @@ void libxl__device_vtpm_add(libxl__egc *egc, uint32_t domid,
if (rc) goto out;
DEVICE_ADD(vtpm, vtpms, domid, &vtpm_saved, COMPARE_DEVID, &d_config);
+
+ rc = libxl__dm_check_start(gc, &d_config, domid);
+ if (rc) goto out;
}
for (;;) {
@@ -2388,6 +2391,9 @@ static void device_disk_add(libxl__egc *egc, uint32_t domid,
if (rc) goto out;
DEVICE_ADD(disk, disks, domid, &disk_saved, COMPARE_DISK, &d_config);
+
+ rc = libxl__dm_check_start(gc, &d_config, domid);
+ if (rc) goto out;
}
for (;;) {
@@ -2928,6 +2934,9 @@ int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *disk,
DEVICE_ADD(disk, disks, domid, &disk_saved, COMPARE_DISK, &d_config);
+ rc = libxl__dm_check_start(gc, &d_config, domid);
+ if (rc) goto out;
+
if (dm_ver == LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN) {
rc = libxl__qmp_insert_cdrom(gc, domid, disk);
if (rc) goto out;
@@ -3354,6 +3363,9 @@ void libxl__device_nic_add(libxl__egc *egc, uint32_t domid,
if (rc) goto out;
DEVICE_ADD(nic, nics, domid, &nic_saved, COMPARE_DEVID, &d_config);
+
+ rc = libxl__dm_check_start(gc, &d_config, domid);
+ if (rc) goto out;
}
for (;;) {
diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index e60e125..0eb8ddd 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -2188,6 +2188,28 @@ int libxl__dm_active(libxl__gc *gc, uint32_t domid)
return pid != NULL;
}
+int libxl__dm_check_start(libxl__gc *gc, libxl_domain_config *d_config,
+ uint32_t domid)
+{
+ int rc;
+
+ if (libxl__dm_active(gc, domid))
+ return 0;
+
+ rc = libxl__need_xenpv_qemu(gc, d_config);
+ if (rc < 0)
+ goto out;
+
+ if (!rc)
+ return 0;
+
+ LOG(ERROR, "device model required but not running");
+ rc = ERROR_FAIL;
+
+out:
+ return rc;
+}
+
/*
* Local variables:
* mode: C
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 144c715..f61eaf0 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -1624,6 +1624,9 @@ _hidden bool libxl__query_qemu_backend(libxl__gc *gc,
const char *type,
bool def);
_hidden int libxl__dm_active(libxl__gc *gc, uint32_t domid);
+_hidden int libxl__dm_check_start(libxl__gc *gc,
+ libxl_domain_config *d_config,
+ uint32_t domid);
/*
* This function will fix reserved device memory conflict
diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
index dc10cb7..300fd4d 100644
--- a/tools/libxl/libxl_pci.c
+++ b/tools/libxl/libxl_pci.c
@@ -169,6 +169,9 @@ static int libxl__device_pci_add_xenstore(libxl__gc *gc, uint32_t domid, libxl_d
DEVICE_ADD(pci, pcidevs, domid, &pcidev_saved, COMPARE_PCI, &d_config);
+ rc = libxl__dm_check_start(gc, &d_config, domid);
+ if (rc) goto out;
+
for (;;) {
rc = libxl__xs_transaction_start(gc, &t);
if (rc) goto out;
diff --git a/tools/libxl/libxl_pvusb.c b/tools/libxl/libxl_pvusb.c
index 68e5673..c9b7c4a 100644
--- a/tools/libxl/libxl_pvusb.c
+++ b/tools/libxl/libxl_pvusb.c
@@ -145,6 +145,9 @@ static int libxl__device_usbctrl_add_xenstore(libxl__gc *gc, uint32_t domid,
DEVICE_ADD(usbctrl, usbctrls, domid, &usbctrl_saved,
COMPARE_USBCTRL, &d_config);
+ rc = libxl__dm_check_start(gc, &d_config, domid);
+ if (rc) goto out;
+
if (usbctrl->type == LIBXL_USBCTRL_TYPE_QUSB) {
if (!libxl__query_qemu_backend(gc, domid, usbctrl->backend_domid,
"qusb", false)) {
@@ -969,6 +972,9 @@ static int libxl__device_usbdev_add_xenstore(libxl__gc *gc, uint32_t domid,
DEVICE_ADD(usbdev, usbdevs, domid, &usbdev_saved,
COMPARE_USB, &d_config);
+
+ rc = libxl__dm_check_start(gc, &d_config, domid);
+ if (rc) goto out;
}
for (;;) {
--
2.6.2
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prev parent reply other threads:[~2016-03-30 12:05 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-30 12:05 [PATCH v5 0/5] libxl: add support for qemu base pvusb backend Juergen Gross
2016-03-30 12:05 ` [PATCH v5 1/5] libxl: make libxl__need_xenpv_qemu() operate on domain config Juergen Gross
2016-03-30 13:38 ` Wei Liu
2016-03-30 14:02 ` Juergen Gross
2016-03-30 12:05 ` [PATCH v5 2/5] libxl: add query function for backend support by device model Juergen Gross
2016-03-30 13:44 ` George Dunlap
2016-03-30 13:59 ` Juergen Gross
2016-03-30 13:53 ` Wei Liu
2016-03-30 14:02 ` Juergen Gross
2016-03-30 14:09 ` Wei Liu
2016-03-30 14:11 ` Juergen Gross
2016-03-30 14:26 ` Wei Liu
2016-03-30 15:55 ` Anthony PERARD
2016-03-30 15:59 ` Wei Liu
2016-03-30 16:07 ` Anthony PERARD
2016-03-30 14:10 ` George Dunlap
2016-03-30 14:27 ` Wei Liu
2016-03-30 12:05 ` [PATCH v5 3/5] libxl: add new pvusb backend "qusb" provided by qemu Juergen Gross
2016-03-30 14:19 ` Wei Liu
2016-03-30 14:34 ` Juergen Gross
2016-03-30 14:38 ` Wei Liu
2016-03-30 16:16 ` Wei Liu
2016-03-30 17:09 ` Juergen Gross
2016-03-30 12:05 ` [PATCH v5 4/5] libxl: add service function to check whether device model is running Juergen Gross
2016-03-30 12:05 ` Juergen Gross [this message]
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