superrob1500
/
mirror-linux
mirror of https://github.com/torvalds/linux
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

iommufd/selftest: Add coverage for vdevice tombstone 

This tests the flow to tombstone vdevice when idevice is to be unbound
before vdevice destruction. The expected results of the tombstone are:

 - The vdevice ID can't be reused anymore (not tested in this patch).
 - Even ioctl(IOMMU_DESTROY) can't free the vdevice ID.
 - iommufd_fops_release() can still free everything.

Link: https://patch.msgid.link/r/20250716070349.1807226-8-yilun.xu@linux.intel.com
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
pull/1311/head
Xu Yilun 2025-07-16 15:03:48 +08:00 committed by Jason Gunthorpe
parent c4e496d413
commit 39a369c341
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
tools/testing/selftests/iommu/iommufd.c
View File

@ -3142,6 +3142,20 @@ TEST_F(iommufd_viommu, hw_queue)
test_ioctl_ioas_unmap(iova, PAGE_SIZE);
}
TEST_F(iommufd_viommu, vdevice_tombstone)
{
uint32_t viommu_id = self->viommu_id;
uint32_t dev_id = self->device_id;
uint32_t vdev_id = 0;
if (!dev_id)
SKIP(return, "Skipping test for variant no_viommu");
test_cmd_vdevice_alloc(viommu_id, dev_id, 0x99, &vdev_id);
test_ioctl_destroy(self->stdev_id);
EXPECT_ERRNO(ENOENT, _test_ioctl_destroy(self->fd, vdev_id));
}
FIXTURE(iommufd_device_pasid)
{
int fd;