From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
pbonzini@redhat.com, tglx@kernel.org, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
hpa@zytor.com, shuah@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
ctpence@google.com, David.Kaplan@amd.com,
binbin.wu@linux.intel.com, Jim Mattson <jmattson@google.com>
Subject: Re: [PATCH v4 0/5] KVM: x86: Virtualize AMD's "disable CPUID in usermode"
Date: Fri, 29 May 2026 15:47:46 -0700 [thread overview]
Message-ID: <178009472318.880870.7878635650921105255.b4-ty@google.com> (raw)
In-Reply-To: <20260527174347.2356165-1-jmattson@google.com>
On Wed, 27 May 2026 10:43:42 -0700, Jim Mattson wrote:
> AMD's "disable CPUID in usermode" feature is analogous to Intel's "CPUID
> faulting" feature, but it is advertised and activated differently. The AMD
> feature is advertised via CPUID.80000021H:EAX.CpuidUserDis[bit 17] and
> activated by setting HWCR.CpuidUserDis[bit 35].
>
> Add virtualization support for the AMD feature.
>
> [...]
Applied to kvm-x86 misc, thanks!
[1/5] KVM: x86: Consolidate CPUID fault handling for emulator and interception logic
https://github.com/kvm-x86/linux/commit/cf7d65d1d6f5
[2/5] KVM: x86: Prioritize CPUID faulting over CPUID VM-exits in nested VMX
https://github.com/kvm-x86/linux/commit/be7fd7c3e8bc
[3/5] KVM: x86: Remove supports_cpuid_fault() helper
https://github.com/kvm-x86/linux/commit/d1bc99885a59
[4/5] KVM: x86: Virtualize AMD CPUID faulting
https://github.com/kvm-x86/linux/commit/e93a93f11490
[5/5] KVM: selftests: Update hwcr_msr_test for CPUID faulting bit
https://github.com/kvm-x86/linux/commit/b16c2aca369d
--
https://github.com/kvm-x86/linux/tree/next
next prev parent reply other threads:[~2026-05-29 22:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-27 17:43 Jim Mattson
2026-05-27 17:43 ` [PATCH v4 1/5] KVM: x86: Consolidate CPUID fault handling for emulator and interception logic Jim Mattson
2026-05-28 9:13 ` Peter Zijlstra
2026-05-28 14:20 ` Jim Mattson
2026-05-28 16:08 ` Sean Christopherson
2026-05-28 16:06 ` Sean Christopherson
2026-05-27 17:43 ` [PATCH v4 2/5] KVM: x86: Prioritize CPUID faulting over CPUID VM-exits in nested VMX Jim Mattson
2026-05-27 17:43 ` [PATCH v4 3/5] KVM: x86: Remove supports_cpuid_fault() helper Jim Mattson
2026-05-27 17:43 ` [PATCH v4 4/5] KVM: x86: Virtualize AMD CPUID faulting Jim Mattson
2026-05-27 17:43 ` [PATCH v4 5/5] KVM: selftests: Update hwcr_msr_test for CPUID faulting bit Jim Mattson
2026-05-29 22:47 ` Sean Christopherson [this message]
2026-06-06 15:12 ` [PATCH v4 0/5] KVM: x86: Virtualize AMD's "disable CPUID in usermode" Jim Mattson
2026-06-06 16:00 ` Jim Mattson
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