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From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Sean Christopherson <seanjc@google.com>, Sasha Levin <sashal@kernel.org>
Subject: [PATCH 6.12.y 1/8] KVM: x86: Co-locate initialization of feature MSRs in kvm_arch_vcpu_create()
Date: Mon, 16 Mar 2026 13:19:56 -0400	[thread overview]
Message-ID: <20260316172003.1024253-1-sashal@kernel.org> (raw)
In-Reply-To: <2026031659-scroll-setting-4687@gregkh>

From: Sean Christopherson <seanjc@google.com>

[ Upstream commit 2142ac663a6a72ac868d0768681b1355e3a703eb ]

Bunch all of the feature MSR initialization in kvm_arch_vcpu_create() so
that it can be easily quirked in a future patch.

No functional change intended.

Link: https://lore.kernel.org/r/20240802185511.305849-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Stable-dep-of: e2ffe85b6d2b ("KVM: x86: Introduce KVM_X86_QUIRK_VMCS12_ALLOW_FREEZE_IN_SMM")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/kvm/x86.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0d9035993ed36..60e2ac7ed2fc3 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -12383,6 +12383,8 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
 
 	kvm_async_pf_hash_reset(vcpu);
 
+	vcpu->arch.arch_capabilities = kvm_get_arch_capabilities();
+	vcpu->arch.msr_platform_info = MSR_PLATFORM_INFO_CPUID_FAULT;
 	vcpu->arch.perf_capabilities = kvm_caps.supported_perf_cap;
 	kvm_pmu_init(vcpu);
 
@@ -12397,8 +12399,6 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
 	if (r)
 		goto free_guest_fpu;
 
-	vcpu->arch.arch_capabilities = kvm_get_arch_capabilities();
-	vcpu->arch.msr_platform_info = MSR_PLATFORM_INFO_CPUID_FAULT;
 	kvm_xen_init_vcpu(vcpu);
 	vcpu_load(vcpu);
 	kvm_set_tsc_khz(vcpu, vcpu->kvm->arch.default_tsc_khz);
-- 
2.51.0


  reply	other threads:[~2026-03-16 17:20 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-16 15:24 FAILED: patch "[PATCH] KVM: x86: Introduce KVM_X86_QUIRK_VMCS12_ALLOW_FREEZE_IN_SMM" failed to apply to 6.12-stable tree gregkh
2026-03-16 17:19 ` Sasha Levin [this message]
2026-03-16 17:19   ` [PATCH 6.12.y 2/8] KVM: x86: Quirk initialization of feature MSRs to KVM's max configuration Sasha Levin
2026-03-16 17:19   ` [PATCH 6.12.y 3/8] KVM: x86: do not allow re-enabling quirks Sasha Levin
2026-03-16 17:19   ` [PATCH 6.12.y 4/8] KVM: x86: Allow vendor code to disable quirks Sasha Levin
2026-03-16 17:20   ` [PATCH 6.12.y 5/8] KVM: x86: Introduce supported_quirks to block disabling quirks Sasha Levin
2026-03-16 17:20   ` [PATCH 6.12.y 6/8] KVM: x86: Introduce Intel specific quirk KVM_X86_QUIRK_IGNORE_GUEST_PAT Sasha Levin
2026-03-16 17:20   ` [PATCH 6.12.y 7/8] KVM: nVMX: Add consistency checks for CR0.WP and CR4.CET Sasha Levin
2026-03-16 17:20   ` [PATCH 6.12.y 8/8] KVM: x86: Introduce KVM_X86_QUIRK_VMCS12_ALLOW_FREEZE_IN_SMM Sasha Levin

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