TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

iommufd/selftest: Add IOMMU_TEST_OP_TRIGGER_VEVENT for vEVENTQ coverage

Browse Source 
The handler will get vDEVICE object from the given mdev and convert it to
its per-vIOMMU virtual ID to mimic a real IOMMU driver.

Link: https://patch.msgid.link/r/1ea874d20e56d65e7cfd6e0e8e01bd3dbd038761.1741719725.git.nicolinc@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Nicolin Chen
2025-03-11 12:44:27 -07:00
committed by Jason Gunthorpe
parent 941d0719aa
commit b3cc0b7599
2 changed files with 40 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/iommu/iommufd/iommufd_test.h
+10
View File
@@ -24,6 +24,7 @@ enum {
IOMMU_TEST_OP_MD_CHECK_IOTLB,
IOMMU_TEST_OP_TRIGGER_IOPF,
IOMMU_TEST_OP_DEV_CHECK_CACHE,
IOMMU_TEST_OP_TRIGGER_VEVENT,
};
enum {
@@ -145,6 +146,9 @@ struct iommu_test_cmd {
__u32 id;
__u32 cache;
} check_dev_cache;
struct {
__u32 dev_id;
} trigger_vevent;
};
__u32 last;
};
@@ -212,4 +216,10 @@ struct iommu_viommu_invalidate_selftest {
__u32 cache_id;
};
#define IOMMU_VEVENTQ_TYPE_SELFTEST 0xbeefbeef
struct iommu_viommu_event_selftest {
__u32 virt_id;
};
#endif
drivers/iommu/iommufd/selftest.c
+30
View File
@@ -1621,6 +1621,34 @@ static int iommufd_test_trigger_iopf(struct iommufd_ucmd *ucmd,
return 0;
}
static int iommufd_test_trigger_vevent(struct iommufd_ucmd *ucmd,
struct iommu_test_cmd *cmd)
{
struct iommu_viommu_event_selftest test = {};
struct iommufd_device *idev;
struct mock_dev *mdev;
int rc = -ENOENT;
idev = iommufd_get_device(ucmd, cmd->trigger_vevent.dev_id);
if (IS_ERR(idev))
return PTR_ERR(idev);
mdev = to_mock_dev(idev->dev);
down_read(&mdev->viommu_rwsem);
if (!mdev->viommu || !mdev->vdev_id)
goto out_unlock;
test.virt_id = mdev->vdev_id;
rc = iommufd_viommu_report_event(&mdev->viommu->core,
IOMMU_VEVENTQ_TYPE_SELFTEST, &test,
sizeof(test));
out_unlock:
up_read(&mdev->viommu_rwsem);
iommufd_put_object(ucmd->ictx, &idev->obj);
return rc;
}
void iommufd_selftest_destroy(struct iommufd_object *obj)
{
struct selftest_obj *sobj = to_selftest_obj(obj);
@@ -1702,6 +1730,8 @@ int iommufd_test(struct iommufd_ucmd *ucmd)
cmd->dirty.flags);
case IOMMU_TEST_OP_TRIGGER_IOPF:
return iommufd_test_trigger_iopf(ucmd, cmd);
case IOMMU_TEST_OP_TRIGGER_VEVENT:
return iommufd_test_trigger_vevent(ucmd, cmd);
default:
return -EOPNOTSUPP;
}