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KVM: selftests: Check for _both_ XTILE data and cfg in AMX test

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Check for _both_ XTILE data and cfg support in the AMX test instead of
checking for _either_ feature.  Practically speaking, no sane CPU or vCPU
will support one but not the other, but the effective "or" behavior is
subtle and technically incorrect.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220614200707.3315957-11-seanjc@google.com
This commit is contained in:
Sean Christopherson
2022-06-14 20:06:35 +00:00
parent fdd1e2788c
commit 2697646bd3
1 changed files with 2 additions and 1 deletions
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tools/testing/selftests/kvm/x86_64/amx_test.c
+2 -1
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@@ -335,7 +335,8 @@ int main(int argc, char *argv[])
TEST_REQUIRE(kvm_get_cpuid_max_basic() >= 0xd);
entry = kvm_get_supported_cpuid_index(0xd, 0);
TEST_REQUIRE(entry->eax & XFEATURE_MASK_XTILE);
TEST_REQUIRE(entry->eax & XFEATURE_MASK_XTILECFG);
TEST_REQUIRE(entry->eax & XFEATURE_MASK_XTILEDATA);
/* Get xsave/restore max size */
xsave_restore_size = entry->ecx;