在 2018年10月29日,15:32,Christian König <ckoenig.leichtzumerken@xxxxxxxxx> 写道: > > Am 29.10.18 um 06:50 schrieb Zhang, Jerry: >> 在 2018年10月26日,18:59,Christian König <ckoenig.leichtzumerken@xxxxxxxxx> 写道: >>> Make sure the kernel doesn't crash if we map something at the minimum/maximum address. >>> >>> Signed-off-by: Christian König <christian.koenig@xxxxxxx> >>> --- >>> tests/amdgpu/vm_tests.c | 45 ++++++++++++++++++++++++++++++++++++++++- >>> 1 file changed, 44 insertions(+), 1 deletion(-) >>> >>> diff --git a/tests/amdgpu/vm_tests.c b/tests/amdgpu/vm_tests.c >>> index 7b6dc5d6..bbdeef4d 100644 >>> --- a/tests/amdgpu/vm_tests.c >>> +++ b/tests/amdgpu/vm_tests.c >>> @@ -31,8 +31,8 @@ static amdgpu_device_handle device_handle; >>> static uint32_t major_version; >>> static uint32_t minor_version; >>> >>> - >>> static void amdgpu_vmid_reserve_test(void); >>> +static void amdgpu_vm_mapping_test(void); >>> >>> CU_BOOL suite_vm_tests_enable(void) >>> { >>> @@ -84,6 +84,7 @@ int suite_vm_tests_clean(void) >>> >>> CU_TestInfo vm_tests[] = { >>> { "resere vmid test", amdgpu_vmid_reserve_test }, >>> + { "vm mapping test", amdgpu_vm_mapping_test }, >>> CU_TEST_INFO_NULL, >>> }; >>> >>> @@ -167,3 +168,45 @@ static void amdgpu_vmid_reserve_test(void) >>> r = amdgpu_cs_ctx_free(context_handle); >>> CU_ASSERT_EQUAL(r, 0); >>> } >>> + >>> +static void amdgpu_vm_mapping_test(void) >>> +{ >>> + struct amdgpu_bo_alloc_request req = {0}; >>> + struct drm_amdgpu_info_device dev_info; >>> + const uint64_t size = 4096; >>> + amdgpu_bo_handle buf; >>> + uint64_t addr; >>> + int r; >>> + >>> + req.alloc_size = size; >>> + req.phys_alignment = 0; >>> + req.preferred_heap = AMDGPU_GEM_DOMAIN_GTT; >>> + req.flags = 0; >>> + >>> + r = amdgpu_bo_alloc(device_handle, &req, &buf); >>> + CU_ASSERT_EQUAL(r, 0); >>> + >>> + r = amdgpu_query_info(device_handle, AMDGPU_INFO_DEV_INFO, >>> + sizeof(dev_info), &dev_info); >>> + CU_ASSERT_EQUAL(r, 0); >>> + >>> + addr = dev_info.virtual_address_offset; >>> + r = amdgpu_bo_va_op(buf, 0, size, addr, 0, AMDGPU_VA_OP_MAP); >>> + CU_ASSERT_EQUAL(r, 0); >> Please confirm: >> >> We may need to unmap the VA before bo free, although this VA range is unlikely to be used by other test cases. > > Unmapping is unnecessary, VA mappings of BOs are automatically removed when the BO is freed. Ah, correct. Feel free to add Reviewed-by: Junwei Zhang <Jerry.Zhang@xxxxxxx> > >> BTW, is it a chance in practice that a process may map different VA ranges to the same bo? > > Yeah, that is used quite extensively with PRTs. PRT may use different ranges in entire BO. What I actually mean is the same bo range, e.g. 1 page of BO starting from offset 0, mapping to different VA ranges, like what the test does now. Jerry > > Regards, > Christian. > >> >> Regards, >> Jerry >> >>> + >>> + addr = dev_info.virtual_address_max - size; >>> + r = amdgpu_bo_va_op(buf, 0, size, addr, 0, AMDGPU_VA_OP_MAP); >>> + CU_ASSERT_EQUAL(r, 0); >>> + >>> + if (dev_info.high_va_offset) { >>> + addr = dev_info.high_va_offset; >>> + r = amdgpu_bo_va_op(buf, 0, size, addr, 0, AMDGPU_VA_OP_MAP); >>> + CU_ASSERT_EQUAL(r, 0); >>> + >>> + addr = dev_info.high_va_max - size; >>> + r = amdgpu_bo_va_op(buf, 0, size, addr, 0, AMDGPU_VA_OP_MAP); >>> + CU_ASSERT_EQUAL(r, 0); >>> + } >>> + >>> + amdgpu_bo_free(buf); >>> +} >>> -- >>> 2.17.1 >>> >>> _______________________________________________ >>> amd-gfx mailing list >>> amd-gfx@xxxxxxxxxxxxxxxxxxxxx >>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx