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| author | Joao Martins <joao.m.martins@oracle.com> | 2023-10-24 14:51:06 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-10-24 11:58:44 -0300 |
| commit | 7adf267d66d1d737ea8318976fd1ce93733fd3a4 (patch) | |
| tree | de30b3b6ef572a10ea361b4fd7bd7a71d1df94ab /drivers/iommu | |
| parent | 266ce58989ba05e2a24460fdbf402d766c2e3870 (diff) | |
| download | lwn-7adf267d66d1d737ea8318976fd1ce93733fd3a4.tar.gz lwn-7adf267d66d1d737ea8318976fd1ce93733fd3a4.zip | |
iommufd/selftest: Test IOMMU_HWPT_SET_DIRTY_TRACKING
Change mock_domain to supporting dirty tracking and add tests to exercise
the new SET_DIRTY_TRACKING API in the iommufd_dirty_tracking selftest
fixture.
Link: https://lore.kernel.org/r/20231024135109.73787-16-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/iommufd/selftest.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 78362f2334f5..2773275566af 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -24,6 +24,7 @@ static struct platform_device *selftest_iommu_dev; size_t iommufd_test_memory_limit = 65536; enum { + MOCK_DIRTY_TRACK = 1, MOCK_IO_PAGE_SIZE = PAGE_SIZE / 2, /* @@ -86,6 +87,7 @@ void iommufd_test_syz_conv_iova_id(struct iommufd_ucmd *ucmd, } struct mock_iommu_domain { + unsigned long flags; struct iommu_domain domain; struct xarray pfns; }; @@ -155,6 +157,20 @@ static void *mock_domain_hw_info(struct device *dev, u32 *length, u32 *type) static int mock_domain_set_dirty_tracking(struct iommu_domain *domain, bool enable) { + struct mock_iommu_domain *mock = + container_of(domain, struct mock_iommu_domain, domain); + unsigned long flags = mock->flags; + + if (enable && !domain->dirty_ops) + return -EINVAL; + + /* No change? */ + if (!(enable ^ !!(flags & MOCK_DIRTY_TRACK))) + return 0; + + flags = (enable ? flags | MOCK_DIRTY_TRACK : flags & ~MOCK_DIRTY_TRACK); + + mock->flags = flags; return 0; } |