diff mbox series

[39/42] KVM: selftests: Skip AMX test if ARCH_REQ_XCOMP_GUEST_PERM isn't supported

Message ID 20220604012058.1972195-40-seanjc@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: selftests: Overhaul Part II - CPUID | expand

Commit Message

Sean Christopherson June 4, 2022, 1:20 a.m. UTC 
Skip the AMX test instead of silently returning if the host kernel
doesn't support ARCH_REQ_XCOMP_GUEST_PERM.  KVM didn't support XFD until
v5.17, so it's extremely unlikely allowing the test to run on a pre-v5.15
kernel is the right thing to do.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 tools/testing/selftests/kvm/lib/x86_64/processor.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index f1290540210d..86e610967e79 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -602,14 +602,7 @@  void vm_xsave_req_perm(int bit)
 
 	TEST_REQUIRE(bitmask & (1ULL << bit));
 
-	rc = syscall(SYS_arch_prctl, ARCH_REQ_XCOMP_GUEST_PERM, bit);
-
-	/*
-	 * The older kernel version(<5.15) can't support
-	 * ARCH_REQ_XCOMP_GUEST_PERM and directly return.
-	 */
-	if (rc)
-		return;
+	TEST_REQUIRE(!syscall(SYS_arch_prctl, ARCH_REQ_XCOMP_GUEST_PERM, bit));
 
 	rc = syscall(SYS_arch_prctl, ARCH_GET_XCOMP_GUEST_PERM, &bitmask);
 	TEST_ASSERT(rc == 0, "prctl(ARCH_GET_XCOMP_GUEST_PERM) error: %ld", rc);