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| author | Joao Martins <joao.m.martins@oracle.com> | 2023-10-24 14:51:09 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-10-24 11:58:44 -0300 |
| commit | 0795b305da8902e7d092f90bf9a1a2c98f34b1db (patch) | |
| tree | 9508c979de0fceae0062c16a06895e50df87675b /drivers/iommu/iommufd | |
| parent | ae36fe70cea4d7c177452ab41e6734fa3cbd4ad8 (diff) | |
| download | linux-0795b305da8902e7d092f90bf9a1a2c98f34b1db.tar.gz linux-0795b305da8902e7d092f90bf9a1a2c98f34b1db.tar.bz2 linux-0795b305da8902e7d092f90bf9a1a2c98f34b1db.zip | |
iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP_NO_CLEAR flag
Change test_mock_dirty_bitmaps() to pass a flag where it specifies the flag
under test. The test does the same thing as the GET_DIRTY_BITMAP regular
test. Except that it tests whether the dirtied bits are fetched all the
same a second time, as opposed to observing them cleared.
Link: https://lore.kernel.org/r/20231024135109.73787-19-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/iommu/iommufd')
| -rw-r--r-- | drivers/iommu/iommufd/selftest.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 0eb01d1f9df8..d8551c9d5b6c 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -193,13 +193,16 @@ static int mock_domain_read_and_clear_dirty(struct iommu_domain *domain, ent = xa_load(&mock->pfns, cur / MOCK_IO_PAGE_SIZE); if (ent && (xa_to_value(ent) & MOCK_PFN_DIRTY_IOVA)) { - unsigned long val; - /* Clear dirty */ - val = xa_to_value(ent) & ~MOCK_PFN_DIRTY_IOVA; - old = xa_store(&mock->pfns, cur / MOCK_IO_PAGE_SIZE, - xa_mk_value(val), GFP_KERNEL); - WARN_ON_ONCE(ent != old); + if (!(flags & IOMMU_DIRTY_NO_CLEAR)) { + unsigned long val; + + val = xa_to_value(ent) & ~MOCK_PFN_DIRTY_IOVA; + old = xa_store(&mock->pfns, + cur / MOCK_IO_PAGE_SIZE, + xa_mk_value(val), GFP_KERNEL); + WARN_ON_ONCE(ent != old); + } iommu_dirty_bitmap_record(dirty, cur, MOCK_IO_PAGE_SIZE); } |