[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20220614200707.3315957-40-seanjc@google.com>
Date: Tue, 14 Jun 2022 20:07:04 +0000
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
Sean Christopherson <seanjc@...gle.com>,
Jim Mattson <jmattson@...gle.com>
Subject: [PATCH v2 39/42] KVM: selftests: Skip AMX test if ARCH_REQ_XCOMP_GUEST_PERM
isn't supported
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@...gle.com>
---
tools/testing/selftests/kvm/lib/x86_64/processor.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index c7fe584c71ed..ee346a280482 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -601,14 +601,7 @@ 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);
--
2.36.1.476.g0c4daa206d-goog
Powered by blists - more mailing lists