From: Yi Liu <yi.l.liu@intel.com>
To: alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com
Cc: cohuck@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com,
kvm@vger.kernel.org, mjrosato@linux.ibm.com,
chao.p.peng@linux.intel.com, yi.l.liu@intel.com,
yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com,
shameerali.kolothum.thodi@huawei.com, lulu@redhat.com,
suravee.suthikulpanit@amd.com,
intel-gvt-dev@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
linux-s390@vger.kernel.org
Subject: [PATCH v2 05/14] kvm/vfio: Accept vfio device file from userspace
Date: Mon, 6 Feb 2023 01:05:23 -0800 [thread overview]
Message-ID: <20230206090532.95598-6-yi.l.liu@intel.com> (raw)
In-Reply-To: <20230206090532.95598-1-yi.l.liu@intel.com>
This defines KVM_DEV_VFIO_FILE* and make alias with KVM_DEV_VFIO_GROUP*.
Old userspace uses KVM_DEV_VFIO_GROUP* works as well.
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
---
Documentation/virt/kvm/devices/vfio.rst | 40 ++++++++++++++-----------
include/uapi/linux/kvm.h | 16 +++++++---
virt/kvm/vfio.c | 16 +++++-----
3 files changed, 42 insertions(+), 30 deletions(-)
diff --git a/Documentation/virt/kvm/devices/vfio.rst b/Documentation/virt/kvm/devices/vfio.rst
index 2d20dc561069..7f84ec26ca4a 100644
--- a/Documentation/virt/kvm/devices/vfio.rst
+++ b/Documentation/virt/kvm/devices/vfio.rst
@@ -9,23 +9,26 @@ Device types supported:
- KVM_DEV_TYPE_VFIO
Only one VFIO instance may be created per VM. The created device
-tracks VFIO groups in use by the VM and features of those groups
-important to the correctness and acceleration of the VM. As groups
-are enabled and disabled for use by the VM, KVM should be updated
-about their presence. When registered with KVM, a reference to the
-VFIO-group is held by KVM.
+tracks VFIO files (group or device) in use by the VM and features
+of those groups/devices important to the correctness and acceleration
+of the VM. As groups/devices are enabled and disabled for use by the
+VM, KVM should be updated about their presence. When registered with
+KVM, a reference to the VFIO file is held by KVM.
Groups:
- KVM_DEV_VFIO_GROUP
-
-KVM_DEV_VFIO_GROUP attributes:
- KVM_DEV_VFIO_GROUP_ADD: Add a VFIO group to VFIO-KVM device tracking
- kvm_device_attr.addr points to an int32_t file descriptor
- for the VFIO group.
- KVM_DEV_VFIO_GROUP_DEL: Remove a VFIO group from VFIO-KVM device tracking
- kvm_device_attr.addr points to an int32_t file descriptor
- for the VFIO group.
- KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE: attaches a guest visible TCE table
+ KVM_DEV_VFIO_FILE
+ - alias: KVM_DEV_VFIO_GROUP
+
+KVM_DEV_VFIO_FILE attributes:
+ KVM_DEV_VFIO_FILE_ADD: Add a VFIO file (group/device) to VFIO-KVM device
+ tracking kvm_device_attr.addr points to an int32_t file descriptor
+ for the VFIO file.
+ - alias: KVM_DEV_VFIO_GROUP_ADD
+ KVM_DEV_VFIO_FILE_DEL: Remove a VFIO file (group/device) from VFIO-KVM
+ device tracking kvm_device_attr.addr points to an int32_t file
+ descriptor for the VFIO file.
+ - alias: KVM_DEV_VFIO_GROUP_DEL
+ KVM_DEV_VFIO_FILE_SET_SPAPR_TCE: attaches a guest visible TCE table
allocated by sPAPR KVM.
kvm_device_attr.addr points to a struct::
@@ -36,6 +39,7 @@ KVM_DEV_VFIO_GROUP attributes:
where:
- - @groupfd is a file descriptor for a VFIO group;
- - @tablefd is a file descriptor for a TCE table allocated via
- KVM_CREATE_SPAPR_TCE.
+ *) @groupfd is a file descriptor for a VFIO group;
+ *) @tablefd is a file descriptor for a TCE table allocated via
+ KVM_CREATE_SPAPR_TCE.
+ - alias: KVM_DEV_VFIO_FILE_SET_SPAPR_TCE
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 55155e262646..484a8133bc69 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1401,10 +1401,18 @@ struct kvm_device_attr {
__u64 addr; /* userspace address of attr data */
};
-#define KVM_DEV_VFIO_GROUP 1
-#define KVM_DEV_VFIO_GROUP_ADD 1
-#define KVM_DEV_VFIO_GROUP_DEL 2
-#define KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE 3
+#define KVM_DEV_VFIO_FILE 1
+
+#define KVM_DEV_VFIO_FILE_ADD 1
+#define KVM_DEV_VFIO_FILE_DEL 2
+#define KVM_DEV_VFIO_FILE_SET_SPAPR_TCE 3
+
+/* KVM_DEV_VFIO_GROUP aliases are for compile time uapi compatibility */
+#define KVM_DEV_VFIO_GROUP KVM_DEV_VFIO_FILE
+
+#define KVM_DEV_VFIO_GROUP_ADD KVM_DEV_VFIO_FILE_ADD
+#define KVM_DEV_VFIO_GROUP_DEL KVM_DEV_VFIO_FILE_DEL
+#define KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE KVM_DEV_VFIO_FILE_SET_SPAPR_TCE
enum kvm_device_type {
KVM_DEV_TYPE_FSL_MPIC_20 = 1,
diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c
index 857d6ba349e1..d869913baafd 100644
--- a/virt/kvm/vfio.c
+++ b/virt/kvm/vfio.c
@@ -286,18 +286,18 @@ static int kvm_vfio_set_file(struct kvm_device *dev, long attr,
int32_t fd;
switch (attr) {
- case KVM_DEV_VFIO_GROUP_ADD:
+ case KVM_DEV_VFIO_FILE_ADD:
if (get_user(fd, argp))
return -EFAULT;
return kvm_vfio_file_add(dev, fd);
- case KVM_DEV_VFIO_GROUP_DEL:
+ case KVM_DEV_VFIO_FILE_DEL:
if (get_user(fd, argp))
return -EFAULT;
return kvm_vfio_file_del(dev, fd);
#ifdef CONFIG_SPAPR_TCE_IOMMU
- case KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE:
+ case KVM_DEV_VFIO_FILE_SET_SPAPR_TCE:
return kvm_vfio_file_set_spapr_tce(dev, arg);
#endif
}
@@ -309,7 +309,7 @@ static int kvm_vfio_set_attr(struct kvm_device *dev,
struct kvm_device_attr *attr)
{
switch (attr->group) {
- case KVM_DEV_VFIO_GROUP:
+ case KVM_DEV_VFIO_FILE:
return kvm_vfio_set_file(dev, attr->attr,
u64_to_user_ptr(attr->addr));
}
@@ -321,12 +321,12 @@ static int kvm_vfio_has_attr(struct kvm_device *dev,
struct kvm_device_attr *attr)
{
switch (attr->group) {
- case KVM_DEV_VFIO_GROUP:
+ case KVM_DEV_VFIO_FILE:
switch (attr->attr) {
- case KVM_DEV_VFIO_GROUP_ADD:
- case KVM_DEV_VFIO_GROUP_DEL:
+ case KVM_DEV_VFIO_FILE_ADD:
+ case KVM_DEV_VFIO_FILE_DEL:
#ifdef CONFIG_SPAPR_TCE_IOMMU
- case KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE:
+ case KVM_DEV_VFIO_FILE_SET_SPAPR_TCE:
#endif
return 0;
}
--
2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Yi Liu <yi.l.liu@intel.com>
To: alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com
Cc: linux-s390@vger.kernel.org, yi.l.liu@intel.com,
yi.y.sun@linux.intel.com, kvm@vger.kernel.org,
mjrosato@linux.ibm.com, jasowang@redhat.com, cohuck@redhat.com,
linux-kernel@vger.kernel.org, peterx@redhat.com,
eric.auger@redhat.com, nicolinc@nvidia.com,
shameerali.kolothum.thodi@huawei.com,
suravee.suthikulpanit@amd.com, chao.p.peng@linux.intel.com,
lulu@redhat.com, intel-gvt-dev@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH v2 05/14] kvm/vfio: Accept vfio device file from userspace
Date: Mon, 6 Feb 2023 01:05:23 -0800 [thread overview]
Message-ID: <20230206090532.95598-6-yi.l.liu@intel.com> (raw)
In-Reply-To: <20230206090532.95598-1-yi.l.liu@intel.com>
This defines KVM_DEV_VFIO_FILE* and make alias with KVM_DEV_VFIO_GROUP*.
Old userspace uses KVM_DEV_VFIO_GROUP* works as well.
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
---
Documentation/virt/kvm/devices/vfio.rst | 40 ++++++++++++++-----------
include/uapi/linux/kvm.h | 16 +++++++---
virt/kvm/vfio.c | 16 +++++-----
3 files changed, 42 insertions(+), 30 deletions(-)
diff --git a/Documentation/virt/kvm/devices/vfio.rst b/Documentation/virt/kvm/devices/vfio.rst
index 2d20dc561069..7f84ec26ca4a 100644
--- a/Documentation/virt/kvm/devices/vfio.rst
+++ b/Documentation/virt/kvm/devices/vfio.rst
@@ -9,23 +9,26 @@ Device types supported:
- KVM_DEV_TYPE_VFIO
Only one VFIO instance may be created per VM. The created device
-tracks VFIO groups in use by the VM and features of those groups
-important to the correctness and acceleration of the VM. As groups
-are enabled and disabled for use by the VM, KVM should be updated
-about their presence. When registered with KVM, a reference to the
-VFIO-group is held by KVM.
+tracks VFIO files (group or device) in use by the VM and features
+of those groups/devices important to the correctness and acceleration
+of the VM. As groups/devices are enabled and disabled for use by the
+VM, KVM should be updated about their presence. When registered with
+KVM, a reference to the VFIO file is held by KVM.
Groups:
- KVM_DEV_VFIO_GROUP
-
-KVM_DEV_VFIO_GROUP attributes:
- KVM_DEV_VFIO_GROUP_ADD: Add a VFIO group to VFIO-KVM device tracking
- kvm_device_attr.addr points to an int32_t file descriptor
- for the VFIO group.
- KVM_DEV_VFIO_GROUP_DEL: Remove a VFIO group from VFIO-KVM device tracking
- kvm_device_attr.addr points to an int32_t file descriptor
- for the VFIO group.
- KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE: attaches a guest visible TCE table
+ KVM_DEV_VFIO_FILE
+ - alias: KVM_DEV_VFIO_GROUP
+
+KVM_DEV_VFIO_FILE attributes:
+ KVM_DEV_VFIO_FILE_ADD: Add a VFIO file (group/device) to VFIO-KVM device
+ tracking kvm_device_attr.addr points to an int32_t file descriptor
+ for the VFIO file.
+ - alias: KVM_DEV_VFIO_GROUP_ADD
+ KVM_DEV_VFIO_FILE_DEL: Remove a VFIO file (group/device) from VFIO-KVM
+ device tracking kvm_device_attr.addr points to an int32_t file
+ descriptor for the VFIO file.
+ - alias: KVM_DEV_VFIO_GROUP_DEL
+ KVM_DEV_VFIO_FILE_SET_SPAPR_TCE: attaches a guest visible TCE table
allocated by sPAPR KVM.
kvm_device_attr.addr points to a struct::
@@ -36,6 +39,7 @@ KVM_DEV_VFIO_GROUP attributes:
where:
- - @groupfd is a file descriptor for a VFIO group;
- - @tablefd is a file descriptor for a TCE table allocated via
- KVM_CREATE_SPAPR_TCE.
+ *) @groupfd is a file descriptor for a VFIO group;
+ *) @tablefd is a file descriptor for a TCE table allocated via
+ KVM_CREATE_SPAPR_TCE.
+ - alias: KVM_DEV_VFIO_FILE_SET_SPAPR_TCE
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 55155e262646..484a8133bc69 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1401,10 +1401,18 @@ struct kvm_device_attr {
__u64 addr; /* userspace address of attr data */
};
-#define KVM_DEV_VFIO_GROUP 1
-#define KVM_DEV_VFIO_GROUP_ADD 1
-#define KVM_DEV_VFIO_GROUP_DEL 2
-#define KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE 3
+#define KVM_DEV_VFIO_FILE 1
+
+#define KVM_DEV_VFIO_FILE_ADD 1
+#define KVM_DEV_VFIO_FILE_DEL 2
+#define KVM_DEV_VFIO_FILE_SET_SPAPR_TCE 3
+
+/* KVM_DEV_VFIO_GROUP aliases are for compile time uapi compatibility */
+#define KVM_DEV_VFIO_GROUP KVM_DEV_VFIO_FILE
+
+#define KVM_DEV_VFIO_GROUP_ADD KVM_DEV_VFIO_FILE_ADD
+#define KVM_DEV_VFIO_GROUP_DEL KVM_DEV_VFIO_FILE_DEL
+#define KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE KVM_DEV_VFIO_FILE_SET_SPAPR_TCE
enum kvm_device_type {
KVM_DEV_TYPE_FSL_MPIC_20 = 1,
diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c
index 857d6ba349e1..d869913baafd 100644
--- a/virt/kvm/vfio.c
+++ b/virt/kvm/vfio.c
@@ -286,18 +286,18 @@ static int kvm_vfio_set_file(struct kvm_device *dev, long attr,
int32_t fd;
switch (attr) {
- case KVM_DEV_VFIO_GROUP_ADD:
+ case KVM_DEV_VFIO_FILE_ADD:
if (get_user(fd, argp))
return -EFAULT;
return kvm_vfio_file_add(dev, fd);
- case KVM_DEV_VFIO_GROUP_DEL:
+ case KVM_DEV_VFIO_FILE_DEL:
if (get_user(fd, argp))
return -EFAULT;
return kvm_vfio_file_del(dev, fd);
#ifdef CONFIG_SPAPR_TCE_IOMMU
- case KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE:
+ case KVM_DEV_VFIO_FILE_SET_SPAPR_TCE:
return kvm_vfio_file_set_spapr_tce(dev, arg);
#endif
}
@@ -309,7 +309,7 @@ static int kvm_vfio_set_attr(struct kvm_device *dev,
struct kvm_device_attr *attr)
{
switch (attr->group) {
- case KVM_DEV_VFIO_GROUP:
+ case KVM_DEV_VFIO_FILE:
return kvm_vfio_set_file(dev, attr->attr,
u64_to_user_ptr(attr->addr));
}
@@ -321,12 +321,12 @@ static int kvm_vfio_has_attr(struct kvm_device *dev,
struct kvm_device_attr *attr)
{
switch (attr->group) {
- case KVM_DEV_VFIO_GROUP:
+ case KVM_DEV_VFIO_FILE:
switch (attr->attr) {
- case KVM_DEV_VFIO_GROUP_ADD:
- case KVM_DEV_VFIO_GROUP_DEL:
+ case KVM_DEV_VFIO_FILE_ADD:
+ case KVM_DEV_VFIO_FILE_DEL:
#ifdef CONFIG_SPAPR_TCE_IOMMU
- case KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE:
+ case KVM_DEV_VFIO_FILE_SET_SPAPR_TCE:
#endif
return 0;
}
--
2.34.1
next prev parent reply other threads:[~2023-02-06 9:06 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-06 9:05 [PATCH v2 00/14] Add vfio_device cdev for iommufd support Yi Liu
2023-02-06 9:05 ` [Intel-gfx] " Yi Liu
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 01/14] vfio: Allocate per device file structure Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 02/14] vfio: Refine vfio file kAPIs Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-06 9:05 ` [PATCH v2 03/14] vfio: Accept vfio device file in the driver facing kAPI Yi Liu
2023-02-06 9:05 ` [Intel-gfx] " Yi Liu
2023-02-07 3:25 ` Tian, Kevin
2023-02-07 3:25 ` [Intel-gfx] " Tian, Kevin
2023-02-06 9:05 ` [PATCH v2 04/14] kvm/vfio: Rename kvm_vfio_group to prepare for accepting vfio device fd Yi Liu
2023-02-06 9:05 ` [Intel-gfx] " Yi Liu
2023-02-06 9:05 ` Yi Liu [this message]
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 05/14] kvm/vfio: Accept vfio device file from userspace Yi Liu
2023-02-07 3:36 ` Tian, Kevin
2023-02-07 3:36 ` [Intel-gfx] " Tian, Kevin
2023-02-07 8:39 ` Liu, Yi L
2023-02-07 8:39 ` [Intel-gfx] " Liu, Yi L
2023-02-06 9:05 ` [PATCH v2 06/14] vfio: Pass struct vfio_device_file * to vfio_device_open/close() Yi Liu
2023-02-06 9:05 ` [Intel-gfx] " Yi Liu
2023-02-07 3:42 ` Tian, Kevin
2023-02-07 3:42 ` [Intel-gfx] " Tian, Kevin
2023-02-06 9:05 ` [PATCH v2 07/14] vfio: Block device access via device fd until device is opened Yi Liu
2023-02-06 9:05 ` [Intel-gfx] " Yi Liu
2023-02-07 3:52 ` Tian, Kevin
2023-02-07 3:52 ` [Intel-gfx] " Tian, Kevin
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 08/14] vfio: Add infrastructure for bind_iommufd from userspace Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-07 3:56 ` [Intel-gfx] " Tian, Kevin
2023-02-07 3:56 ` Tian, Kevin
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 09/14] vfio-iommufd: Add detach_ioas support for physical VFIO devices Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-07 6:06 ` Tian, Kevin
2023-02-07 6:06 ` [Intel-gfx] " Tian, Kevin
2023-02-07 8:56 ` Liu, Yi L
2023-02-07 8:56 ` [Intel-gfx] " Liu, Yi L
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 10/14] vfio-iommufd: Add detach_ioas for emulated " Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-07 6:08 ` Tian, Kevin
2023-02-07 6:08 ` [Intel-gfx] " Tian, Kevin
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 11/14] vfio: Make vfio_device_open() exclusive between group path and device cdev path Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-07 6:24 ` Tian, Kevin
2023-02-07 6:24 ` [Intel-gfx] " Tian, Kevin
2023-02-07 8:54 ` Liu, Yi L
2023-02-07 8:54 ` [Intel-gfx] " Liu, Yi L
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 12/14] vfio: Add cdev for vfio_device Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-07 7:54 ` Tian, Kevin
2023-02-07 7:54 ` [Intel-gfx] " Tian, Kevin
2023-02-10 11:31 ` Joao Martins
2023-02-10 11:31 ` [Intel-gfx] " Joao Martins
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 13/14] vfio: Add ioctls for device cdev using iommufd Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-07 3:41 ` Yan Zhao
2023-02-07 3:41 ` [Intel-gfx] " Yan Zhao
2023-02-07 7:50 ` Liu, Yi L
2023-02-07 7:50 ` Liu, Yi L
2023-02-07 9:17 ` Tian, Kevin
2023-02-07 9:17 ` [Intel-gfx] " Tian, Kevin
2023-02-06 9:05 ` [Intel-gfx] [PATCH v2 14/14] vfio: Compile group optionally Yi Liu
2023-02-06 9:05 ` Yi Liu
2023-02-06 11:55 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for Add vfio_device cdev for iommufd support Patchwork
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