Re: [PATCH 6/8] KVM: selftests: Enable pre_fault_memory_test for arm64

On Tue, 25 Aug 2026 at 17:01, Lorenzo Stoakes (ARM) [off-list ref] wrote:

From: Jack Thomson <redacted>

Enable the pre_fault_memory_test to run on arm64 by making it work with
different guest page sizes and testing multiple guest configurations.

Update the test_assert to compare against the UCALL_EXIT_REASON, for
portability, as arm64 exits with KVM_EXIT_MMIO while x86 uses
KVM_EXIT_IO.

The message says this updates the test_assert for portability, but the
parent has no exit-reason assert and no struct kvm_run; this patch
adds both, so there was no hardcoded KVM_EXIT_IO to make portable.

...

 int main(int argc, char *argv[])
 {

...

+
        TEST_REQUIRE(kvm_check_cap(KVM_CAP_PRE_FAULT_MEMORY));

        test_pre_fault_memory(0, false);

Would it be worth adding an arm64 case for gmem_abort()'s pre-fault path?

Cheers,
/fuad

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2.55.0