averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-04-24 10:49:54 +02:00
Code Issues Packages Projects Releases Wiki Activity

vfio: selftests: Drop IOMMU mapping size assertions for VFIO_TYPE1_IOMMU

Browse Source 
Drop the assertions about IOMMU mappings sizes for VFIO_TYPE1_IOMMU
modes (both the VFIO mode and the iommufd compatibility mode). These
assertions fail when CONFIG_IOMMUFD_VFIO_CONTAINER is enabled, since
iommufd compatibility mode provides different huge page behavior than
VFIO for VFIO_TYPE1_IOMMU. VFIO_TYPE1_IOMMU is an old enough interface
that it's not worth changing the behavior of VFIO and iommufd to match
nor care about the IOMMU mapping sizes.

Cc: Jason Gunthorpe <jgg@ziepe.ca>
Link: https://lore.kernel.org/kvm/20260109143830.176dc279@shazbot.org/
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20260114211252.2581145-1-dmatlack@google.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
This commit is contained in:
David Matlack
2026-01-14 21:12:52 +00:00
committed by Alex Williamson
parent 080723f4d4
commit 1c588bca3b
1 changed files with 2 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/testing/selftests/vfio/vfio_dma_mapping_test.c
+2 -6
View File
@@ -161,12 +161,8 @@ TEST_F(vfio_dma_mapping_test, dma_map_unmap)
if (rc == -EOPNOTSUPP)
goto unmap;
/*
* IOMMUFD compatibility-mode does not support huge mappings when
* using VFIO_TYPE1_IOMMU.
*/
if (!strcmp(variant->iommu_mode, MODE_IOMMUFD_COMPAT_TYPE1))
mapping_size = SZ_4K;
if (self->iommu->mode->iommu_type == VFIO_TYPE1_IOMMU)
goto unmap;
ASSERT_EQ(0, rc);
printf("Found IOMMU mappings for IOVA 0x%lx:\n", region.iova);