From: Xiaoyao Li <xiaoyao.li@intel.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Xiaoyao Li <xiaoyao.li@intel.com>
Subject: [PATCH] KVM: x86: Fix the initial value of mcg_cap
Date: Thu, 20 Oct 2022 11:16:15 +0800 [thread overview]
Message-ID: <20221020031615.890400-1-xiaoyao.li@intel.com> (raw)
vcpu->arch.mcg_cap represents the value of MSR_IA32_MCG_CAP. It's
set via ioctl(KVM_X86_SETUP_MCE) from userspace when exposing and
configuring MCE to guest.
It's wrong to leave the default value as KVM_MAX_MCE_BANKS.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
---
arch/x86/kvm/x86.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4bd5f8a751de..ca8f4a3e698d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -11801,7 +11801,6 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
GFP_KERNEL_ACCOUNT);
if (!vcpu->arch.mce_banks || !vcpu->arch.mci_ctl2_banks)
goto fail_free_mce_banks;
- vcpu->arch.mcg_cap = KVM_MAX_MCE_BANKS;
if (!zalloc_cpumask_var(&vcpu->arch.wbinvd_dirty_mask,
GFP_KERNEL_ACCOUNT))
--
2.27.0
next reply other threads:[~2022-10-20 3:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-20 3:16 Xiaoyao Li [this message]
2022-10-20 14:27 ` Sean Christopherson
2022-10-20 15:07 ` Xiaoyao Li
2022-10-20 16:32 ` Sean Christopherson
2022-10-21 3:12 ` Xiaoyao Li
2022-10-21 18:35 ` Sean Christopherson
2022-10-24 1:37 ` Xiaoyao Li
2022-10-25 16:22 ` Tony Luck
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