Re: [PATCH 3/6] KVM: selftests: Create a new guest_memfd for each testcase

David Hildenbrand
2025-09-29T09:18:13Z

On 26.09.25 18:31, Sean Christopherson wrote:
> Refactor the guest_memfd selftest to improve test isolation by creating a
> a new guest_memfd for each testcase. Currently, the test reuses a single
> guest_memfd instance for all testcases, and thus creates dependencies
> between tests, e.g. not truncating folios from the guest_memfd instance
> at the end of a test could lead to unexpected results (see the PUNCH_HOLE
> purging that needs to done by in-flight the NUMA testcases[1]).
>
> Invoke each test via a macro wrapper to create and close a guest_memfd
> to cut down on the boilerplate copy+paste needed to create a test.
>
> Link: https://lore.kernel.org/all/20250827175247.83322-10-shivankg@amd.com
> Reported-by: Ackerley Tng <ackerleytng@google.com>
> Signed-off-by: Sean Christopherson <seanjc@google.com>

Reviewed-by: David Hildenbrand <david@redhat.com>

--
Cheers

David / dhildenb