Add a new IOMMU_TEST_OP_ACCESS_REPLACE_IOAS to allow replacing the access->ioas, corresponding to the iommufd_access_replace() helper.
Then add a replace coverage as a part of user_copy test case, which basically repeats the copy test after replacing the old ioas with a new one.
Reviewed-by: Kevin Tian kevin.tian@intel.com Reviewed-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Nicolin Chen nicolinc@nvidia.com --- drivers/iommu/iommufd/iommufd_test.h | 4 +++ drivers/iommu/iommufd/selftest.c | 19 ++++++++++++ tools/testing/selftests/iommu/iommufd.c | 29 +++++++++++++++++-- tools/testing/selftests/iommu/iommufd_utils.h | 19 ++++++++++++ 4 files changed, 69 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index dd9168a20ddf..258de2253b61 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -18,6 +18,7 @@ enum { IOMMU_TEST_OP_ACCESS_RW, IOMMU_TEST_OP_SET_TEMP_MEMORY_LIMIT, IOMMU_TEST_OP_MOCK_DOMAIN_REPLACE, + IOMMU_TEST_OP_ACCESS_REPLACE_IOAS, };
enum { @@ -91,6 +92,9 @@ struct iommu_test_cmd { struct { __u32 limit; } memory_limit; + struct { + __u32 ioas_id; + } access_replace_ioas; }; __u32 last; }; diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 9d43334e4faf..bb2cd54ca7b6 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -785,6 +785,22 @@ static int iommufd_test_create_access(struct iommufd_ucmd *ucmd, return rc; }
+static int iommufd_test_access_replace_ioas(struct iommufd_ucmd *ucmd, + unsigned int access_id, + unsigned int ioas_id) +{ + struct selftest_access *staccess; + int rc; + + staccess = iommufd_access_get(access_id); + if (IS_ERR(staccess)) + return PTR_ERR(staccess); + + rc = iommufd_access_replace(staccess->access, ioas_id); + fput(staccess->file); + return rc; +} + /* Check that the pages in a page array match the pages in the user VA */ static int iommufd_test_check_pages(void __user *uptr, struct page **pages, size_t npages) @@ -1000,6 +1016,9 @@ int iommufd_test(struct iommufd_ucmd *ucmd) case IOMMU_TEST_OP_CREATE_ACCESS: return iommufd_test_create_access(ucmd, cmd->id, cmd->create_access.flags); + case IOMMU_TEST_OP_ACCESS_REPLACE_IOAS: + return iommufd_test_access_replace_ioas( + ucmd, cmd->id, cmd->access_replace_ioas.ioas_id); case IOMMU_TEST_OP_ACCESS_PAGES: return iommufd_test_access_pages( ucmd, cmd->id, cmd->access_pages.iova, diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index dc09c1de319f..8acd0af37aa5 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -1283,7 +1283,13 @@ TEST_F(iommufd_mock_domain, user_copy) .dst_iova = MOCK_APERTURE_START, .length = BUFFER_SIZE, }; - unsigned int ioas_id; + struct iommu_ioas_unmap unmap_cmd = { + .size = sizeof(unmap_cmd), + .ioas_id = self->ioas_id, + .iova = MOCK_APERTURE_START, + .length = BUFFER_SIZE, + }; + unsigned int new_ioas_id, ioas_id;
/* Pin the pages in an IOAS with no domains then copy to an IOAS with domains */ test_ioctl_ioas_alloc(&ioas_id); @@ -1301,11 +1307,30 @@ TEST_F(iommufd_mock_domain, user_copy) ASSERT_EQ(0, ioctl(self->fd, IOMMU_IOAS_COPY, ©_cmd)); check_mock_iova(buffer, MOCK_APERTURE_START, BUFFER_SIZE);
+ /* Now replace the ioas with a new one */ + test_ioctl_ioas_alloc(&new_ioas_id); + test_ioctl_ioas_map_id(new_ioas_id, buffer, BUFFER_SIZE, + ©_cmd.src_iova); + test_cmd_access_replace_ioas(access_cmd.id, new_ioas_id); + + /* Destroy the old ioas and cleanup copied mapping */ + ASSERT_EQ(0, ioctl(self->fd, IOMMU_IOAS_UNMAP, &unmap_cmd)); + test_ioctl_destroy(ioas_id); + + /* Then run the same test again with the new ioas */ + access_cmd.access_pages.iova = copy_cmd.src_iova; + ASSERT_EQ(0, + ioctl(self->fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_ACCESS_PAGES), + &access_cmd)); + copy_cmd.src_ioas_id = new_ioas_id; + ASSERT_EQ(0, ioctl(self->fd, IOMMU_IOAS_COPY, ©_cmd)); + check_mock_iova(buffer, MOCK_APERTURE_START, BUFFER_SIZE); + test_cmd_destroy_access_pages( access_cmd.id, access_cmd.access_pages.out_access_pages_id); test_cmd_destroy_access(access_cmd.id);
- test_ioctl_destroy(ioas_id); + test_ioctl_destroy(new_ioas_id); }
TEST_F(iommufd_mock_domain, replace) diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 53b4d3f2d9fc..70353e68e599 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -119,6 +119,25 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, #define test_cmd_hwpt_alloc(device_id, pt_id, hwpt_id) \ ASSERT_EQ(0, _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, hwpt_id))
+static int _test_cmd_access_replace_ioas(int fd, __u32 access_id, + unsigned int ioas_id) +{ + struct iommu_test_cmd cmd = { + .size = sizeof(cmd), + .op = IOMMU_TEST_OP_ACCESS_REPLACE_IOAS, + .id = access_id, + .access_replace_ioas = { .ioas_id = ioas_id }, + }; + int ret; + + ret = ioctl(fd, IOMMU_TEST_CMD, &cmd); + if (ret) + return ret; + return 0; +} +#define test_cmd_access_replace_ioas(access_id, ioas_id) \ + ASSERT_EQ(0, _test_cmd_access_replace_ioas(self->fd, access_id, ioas_id)) + static int _test_cmd_create_access(int fd, unsigned int ioas_id, __u32 *access_id, unsigned int flags) {