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Diffstat (limited to 'tools/testing/selftests/iommu/iommufd.c')
-rw-r--r--tools/testing/selftests/iommu/iommufd.c64
1 files changed, 41 insertions, 23 deletions
diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c
index edf1c99c99..5f7d5a5ba8 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -1722,10 +1722,17 @@ FIXTURE_VARIANT(iommufd_dirty_tracking)
FIXTURE_SETUP(iommufd_dirty_tracking)
{
+ unsigned long size;
int mmap_flags;
void *vrc;
int rc;
+ if (variant->buffer_size < MOCK_PAGE_SIZE) {
+ SKIP(return,
+ "Skipping buffer_size=%lu, less than MOCK_PAGE_SIZE=%lu",
+ variant->buffer_size, MOCK_PAGE_SIZE);
+ }
+
self->fd = open("/dev/iommu", O_RDWR);
ASSERT_NE(-1, self->fd);
@@ -1749,12 +1756,11 @@ FIXTURE_SETUP(iommufd_dirty_tracking)
assert(vrc == self->buffer);
self->page_size = MOCK_PAGE_SIZE;
- self->bitmap_size =
- variant->buffer_size / self->page_size / BITS_PER_BYTE;
+ self->bitmap_size = variant->buffer_size / self->page_size;
/* Provision with an extra (PAGE_SIZE) for the unaligned case */
- rc = posix_memalign(&self->bitmap, PAGE_SIZE,
- self->bitmap_size + PAGE_SIZE);
+ size = DIV_ROUND_UP(self->bitmap_size, BITS_PER_BYTE);
+ rc = posix_memalign(&self->bitmap, PAGE_SIZE, size + PAGE_SIZE);
assert(!rc);
assert(self->bitmap);
assert((uintptr_t)self->bitmap % PAGE_SIZE == 0);
@@ -1775,51 +1781,63 @@ FIXTURE_SETUP(iommufd_dirty_tracking)
FIXTURE_TEARDOWN(iommufd_dirty_tracking)
{
munmap(self->buffer, variant->buffer_size);
- munmap(self->bitmap, self->bitmap_size);
+ munmap(self->bitmap, DIV_ROUND_UP(self->bitmap_size, BITS_PER_BYTE));
teardown_iommufd(self->fd, _metadata);
}
-FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty128k)
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty8k)
+{
+ /* half of an u8 index bitmap */
+ .buffer_size = 8UL * 1024UL,
+};
+
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty16k)
+{
+ /* one u8 index bitmap */
+ .buffer_size = 16UL * 1024UL,
+};
+
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty64k)
{
/* one u32 index bitmap */
- .buffer_size = 128UL * 1024UL,
+ .buffer_size = 64UL * 1024UL,
};
-FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty256k)
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty128k)
{
/* one u64 index bitmap */
- .buffer_size = 256UL * 1024UL,
+ .buffer_size = 128UL * 1024UL,
};
-FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty640k)
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty320k)
{
/* two u64 index and trailing end bitmap */
- .buffer_size = 640UL * 1024UL,
+ .buffer_size = 320UL * 1024UL,
};
-FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty128M)
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty64M)
{
- /* 4K bitmap (128M IOVA range) */
- .buffer_size = 128UL * 1024UL * 1024UL,
+ /* 4K bitmap (64M IOVA range) */
+ .buffer_size = 64UL * 1024UL * 1024UL,
};
-FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty128M_huge)
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty64M_huge)
{
- /* 4K bitmap (128M IOVA range) */
- .buffer_size = 128UL * 1024UL * 1024UL,
+ /* 4K bitmap (64M IOVA range) */
+ .buffer_size = 64UL * 1024UL * 1024UL,
.hugepages = true,
};
-FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty256M)
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty128M)
{
- /* 8K bitmap (256M IOVA range) */
- .buffer_size = 256UL * 1024UL * 1024UL,
+ /* 8K bitmap (128M IOVA range) */
+ .buffer_size = 128UL * 1024UL * 1024UL,
};
-FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty256M_huge)
+FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty128M_huge)
{
- /* 8K bitmap (256M IOVA range) */
- .buffer_size = 256UL * 1024UL * 1024UL,
+ /* 8K bitmap (128M IOVA range) */
+ .buffer_size = 128UL * 1024UL * 1024UL,
.hugepages = true,
};