From: Sean Christopherson <seanjc@google.com>
To: sashiko-reviews@lists.linux.dev
Cc: kvm@vger.kernel.org
Subject: Re: [PATCH v2 6/6] KVM: selftests: Expect failure when trying to set EFER that violates vCPU model
Date: Wed, 28 Oct 2026 06:41:17 -0700 [thread overview]
Message-ID: <auH7fUGZnfGvg6lQ@google.com> (raw)
In-Reply-To: <sashiko-outbox-187178@kernel.org>
On Tue, Oct 27, 2026, sashiko-bot@kernel.org wrote:
> > @@ -222,11 +219,6 @@ static void test_sregs_lmsle(void)
> > vm = vm_create_with_one_vcpu(&vcpu, NULL);
> > vcpu_set_cpuid_feature(vcpu, X86_FEATURE_EFER_LMSLE_MBZ);
> >
> > - /*
> > - * Unlike KVM_SET_MSRS, KVM_SET_SREGS runs the full set of guest CPUID
> > - * checks, i.e. rejects EFER.LMSLE even though it's host-initiated.
> > - */
> > - vcpu_sregs_get(vcpu, &sregs);
> > TEST_ASSERT(!(sregs.efer & EFER_LMSLE), "EFER.LMSLE unexpectedly set");
>
> [Severity: Medium]
> Was removing vcpu_sregs_get(vcpu, &sregs) in test_sregs_lmsle() unintentional?
No, I intended to delete just the comment, and unfortunately the test managed to
pass on multiple systems (I'm guessing my build zeroed the stack?).
prev parent reply other threads:[~2026-10-28 13:41 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-27 22:49 [PATCH v2 0/6] KVM: x86: More EFER.LMA vs. CR4.PAE fixes Sean Christopherson
2026-10-27 22:49 ` [PATCH v2 1/6] Revert "KVM: x86: Skip EFER vs. guest CPUID checks for host-initiated writes" Sean Christopherson
2026-10-27 22:49 ` [PATCH v2 2/6] KVM: x86: Reject clearing EFER.SVME via KVM_SYNC_X86_SREGS if L2 is active Sean Christopherson
2026-10-28 0:08 ` Yosry Ahmed
2026-10-28 13:36 ` Sean Christopherson
2026-10-28 14:47 ` Yosry Ahmed
2026-10-27 22:49 ` [PATCH v2 3/6] KVM: nSVM: Synthesize #GP instead of SHUTDOWN if L2 attempts to clear EFER.SVME Sean Christopherson
2026-10-27 22:49 ` [PATCH v2 4/6] KVM: x86: Recompute EFER.LMA instead of inheriting the current value on EFER writes Sean Christopherson
2026-10-27 23:17 ` sashiko-bot
2026-10-28 13:39 ` Sean Christopherson
2026-10-27 22:49 ` [PATCH v2 5/6] KVM: selftests: Update nSVM EFER test to expect #GP when clearing SVME in L2 Sean Christopherson
2026-10-27 22:49 ` [PATCH v2 6/6] KVM: selftests: Expect failure when trying to set EFER that violates vCPU model Sean Christopherson
2026-10-27 22:52 ` sashiko-bot
2026-10-28 13:41 ` Sean Christopherson [this message]
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