linux-kernel - [PATCH 3/3] x86/kvm: Handle all MCA banks

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Message-Id: <20180622095101.32587-4-bp@alien8.de>
Date:   Fri, 22 Jun 2018 11:51:01 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     KVM <kvm@...r.kernel.org>
Cc:     Joerg Roedel <joro@...tes.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        Tony Luck <tony.luck@...el.com>,
        Yazen Ghannam <Yazen.Ghannam@....com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/3] x86/kvm: Handle all MCA banks

From: Borislav Petkov <bp@...e.de>

Extend the range of MCA banks which get passed to set/get_msr_mce() to
include all the MSRs of the last bank too.

Signed-off-by: Borislav Petkov <bp@...e.de>
---
 arch/x86/kvm/x86.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 80452b0f0e8c..a7d344823356 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2466,7 +2466,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 
 	case MSR_IA32_MCG_CTL:
 	case MSR_IA32_MCG_STATUS:
-	case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_CTL(KVM_MAX_MCE_BANKS) - 1:
+	case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_MISC(KVM_MAX_MCE_BANKS) - 1:
 		return set_msr_mce(vcpu, msr_info);
 
 	case MSR_K7_PERFCTR0 ... MSR_K7_PERFCTR3:
@@ -2588,9 +2588,10 @@ static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
 	case MSR_IA32_MCG_STATUS:
 		data = vcpu->arch.mcg_status;
 		break;
+
 	default:
 		if (msr >= MSR_IA32_MC0_CTL &&
-		    msr < MSR_IA32_MCx_CTL(bank_num)) {
+		    msr < MSR_IA32_MCx_MISC(bank_num)) {
 			u32 offset = msr - MSR_IA32_MC0_CTL;
 			data = vcpu->arch.mce_banks[offset];
 			break;
-- 
2.17.0.582.gccdcbd54c