From: Jim Mattson <jmattson@google.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Thomas Gleixner <tglx@kernel.org>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Shuah Khan <shuah@kernel.org>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org,
Clayton Pence <ctpence@google.com>
Cc: Jim Mattson <jmattson@google.com>
Subject: [PATCH 3/3] KVM: selftests: Update hwcr_msr_test for CPUID faulting bit
Date: Thu, 2 Apr 2026 15:31:02 -0700 [thread overview]
Message-ID: <20260402223108.650572-4-jmattson@google.com> (raw)
In-Reply-To: <20260402223108.650572-1-jmattson@google.com>
Add BIT_ULL(35) (CpuidUserDis) to the valid mask in hwcr_msr_test, now that
KVM accepts writes to this bit when the guest CPUID advertises
CpuidUserDis.
Signed-off-by: Jim Mattson <jmattson@google.com>
---
tools/testing/selftests/kvm/x86/hwcr_msr_test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/kvm/x86/hwcr_msr_test.c b/tools/testing/selftests/kvm/x86/hwcr_msr_test.c
index 10b1b0ba374e..5357281e6e4e 100644
--- a/tools/testing/selftests/kvm/x86/hwcr_msr_test.c
+++ b/tools/testing/selftests/kvm/x86/hwcr_msr_test.c
@@ -11,7 +11,7 @@
void test_hwcr_bit(struct kvm_vcpu *vcpu, unsigned int bit)
{
const uint64_t ignored = BIT_ULL(3) | BIT_ULL(6) | BIT_ULL(8);
- const uint64_t valid = BIT_ULL(18) | BIT_ULL(24);
+ const uint64_t valid = BIT_ULL(18) | BIT_ULL(24) | BIT_ULL(35);
const uint64_t legal = ignored | valid;
uint64_t val = BIT_ULL(bit);
uint64_t actual;
--
2.53.0.1213.gd9a14994de-goog
prev parent reply other threads:[~2026-04-02 22:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-02 22:30 [PATCH 0/3] KVM: x86: Virtualize AMD CPUID faulting Jim Mattson
2026-04-02 22:31 ` [PATCH 1/3] KVM: x86: Rename supports_cpuid_fault to supports_intel_cpuid_fault Jim Mattson
2026-04-10 22:21 ` Sean Christopherson
2026-04-10 22:22 ` Jim Mattson
2026-04-02 22:31 ` [PATCH 2/3] KVM: x86: Virtualize AMD CPUID faulting Jim Mattson
2026-04-02 22:31 ` Jim Mattson [this message]
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