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SubjectRe: [PATCH v2 4/4] nitro_enclaves: add kunit tests for physical contiguous region merging
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On 21/09/2021 18:10, Longpeng(Mike) wrote:
> Add kunit tests for the physical contiguous memory region merging
> functionality.

nitro_enclaves: Add KUnit tests for contiguous physical memory regions
merging

Add KUnit tests for the contiguous physical memory regions merging
functionality from the Nitro Enclaves misc device logic.

>
> Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
> ---
> drivers/virt/nitro_enclaves/ne_misc_test.c | 46 ++++++++++++++++++++++++++++++
> 1 file changed, 46 insertions(+)
>
> diff --git a/drivers/virt/nitro_enclaves/ne_misc_test.c b/drivers/virt/nitro_enclaves/ne_misc_test.c
> index 3426c35..8532bec 100644
> --- a/drivers/virt/nitro_enclaves/ne_misc_test.c
> +++ b/drivers/virt/nitro_enclaves/ne_misc_test.c
> @@ -2,7 +2,53 @@
>
> #include <kunit/test.h>
>
> +#define MAX_PHYS_REGIONS 16
> +
> +struct phys_regions_test {
> + u64 paddr;
> + u64 size;
> + int expect_rc;
> + unsigned long expect_num;
> + u64 expect_last_paddr;
> + u64 expect_last_size;

Please align the fields in the data structure so that's easier to
visualize them.

u64 paddr;
u64 size;
int expect_rc;
unsigned long expect_num;
............

> +} phys_regions_testcases[] = {

phys_regions_test_cases

> + {0x1000, 0x200000, -EINVAL, 0, ~0, ~0},
> + {0x200000, 0x1000, -EINVAL, 0, ~0, ~0},
> + {0x200000, 0x200000, 0, 1, 0x200000, 0x200000},
> + {0x0, 0x200000, 0, 2, 0x0, 0x200000},
> + {0x600000, 0x400000, 0, 3, 0x600000, 0x400000},
> + {0xa00000, 0x400000, 0, 3, 0x600000, 0x800000},
> + {0x1000, 0x200000, -EINVAL, 3, 0x600000, 0x800000},

Please add a comment before each of the above test cases, including a
brief description of what each of them intends to test. So that it's
easier to relate to the numbers.

> +};
> +
> +static void ne_misc_test_set_phys_region(struct kunit *test)

ne_misc_dev_test_merge_phys_contig_memory_regions

> +{
> + struct phys_contig_mem_region *regions;
> + size_t sz;
> + int i, rc;

Please initialize the variables.

Thanks,
Andra

> +
> + sz = sizeof(*regions) + MAX_PHYS_REGIONS * sizeof(struct phys_mem_region);
> + regions = kunit_kzalloc(test, sz, GFP_KERNEL);
> + KUNIT_ASSERT_TRUE(test, regions != NULL);
> +
> + for (i = 0; i < ARRAY_SIZE(phys_regions_testcases); i++) {
> + rc = ne_add_phys_memory_region(regions, phys_regions_testcases[i].paddr,
> + phys_regions_testcases[i].size);
> + KUNIT_EXPECT_EQ(test, rc, phys_regions_testcases[i].expect_rc);
> + KUNIT_EXPECT_EQ(test, regions->num, phys_regions_testcases[i].expect_num);
> +
> + if (phys_regions_testcases[i].expect_last_paddr == ~0ul)
> + continue;
> +
> + KUNIT_EXPECT_EQ(test, regions->region[regions->num - 1].paddr,
> + phys_regions_testcases[i].expect_last_paddr);
> + KUNIT_EXPECT_EQ(test, regions->region[regions->num - 1].size,
> + phys_regions_testcases[i].expect_last_size);
> + }
> +}
> +
> static struct kunit_case ne_misc_test_cases[] = {
> + KUNIT_CASE(ne_misc_test_set_phys_region),
> {}
> };
>
>



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