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From: Jue Wang <juew@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Sean Christopherson <seanjc@google.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>
Cc: Tony Luck <tony.luck@intel.com>,
	kvm@vger.kernel.org, Greg Thelen <gthelen@google.com>,
	Jiaqi Yan <jiaqiyan@google.com>, Jue Wang <juew@google.com>
Subject: [PATCH v3 1/7] KVM: x86: Make APIC_VERSION capture only the magic 0x14UL.
Date: Fri, 13 May 2022 11:20:32 -0700	[thread overview]
Message-ID: <20220513182038.2564643-2-juew@google.com> (raw)
In-Reply-To: <20220513182038.2564643-1-juew@google.com>

This series adds the Corrected Machine Check Interrupt (CMCI) and
Uncorrectable Error No Action required (UCNA) emulation to KVM. The
former is implemented as a LVT CMCI vector. The emulation of UCNA share
the MCE emulation infrastructure.

This is the first of 3 patches that clean up KVM APIC LVT logic.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Jue Wang <juew@google.com>
---
 arch/x86/kvm/lapic.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 9322e6340a74..73b94e312f97 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -54,7 +54,7 @@
 #define PRIo64 "o"
 
 /* 14 is the version for Xeon and Pentium 8.4.8*/
-#define APIC_VERSION			(0x14UL | ((KVM_APIC_LVT_NUM - 1) << 16))
+#define APIC_VERSION			0x14UL
 #define LAPIC_MMIO_LENGTH		(1 << 12)
 /* followed define is not in apicdef.h */
 #define MAX_APIC_VECTOR			256
@@ -367,7 +367,7 @@ static inline int apic_lvt_nmi_mode(u32 lvt_val)
 void kvm_apic_set_version(struct kvm_vcpu *vcpu)
 {
 	struct kvm_lapic *apic = vcpu->arch.apic;
-	u32 v = APIC_VERSION;
+	u32 v = APIC_VERSION | ((KVM_APIC_LVT_NUM - 1) << 16);
 
 	if (!lapic_in_kernel(vcpu))
 		return;
-- 
2.36.0.550.gb090851708-goog


  reply	other threads:[~2022-05-13 18:21 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-13 18:20 [PATCH v3 0/7] KVM: x86: Add CMCI and UCNA emulation Jue Wang
2022-05-13 18:20 ` Jue Wang [this message]
2022-05-13 18:49   ` [PATCH v3 1/7] KVM: x86: Make APIC_VERSION capture only the magic 0x14UL David Matlack
2022-05-13 18:20 ` [PATCH v3 2/7] KVM: x86: Fill apic_lvt_mask with enums / explicit entries Jue Wang
2022-05-13 18:20 ` [PATCH v3 3/7] KVM: x86: Add APIC_LVTx() macro Jue Wang
2022-05-13 18:20 ` [PATCH v3 4/7] KVM: x86: Add Corrected Machine Check Interrupt (CMCI) emulation to lapic Jue Wang
2022-05-13 18:20 ` [PATCH v3 5/7] KVM: x86: Use kcalloc to allocate the mce_banks array Jue Wang
2022-05-13 18:20 ` [PATCH v3 6/7] KVM: x86: Add emulation for MSR_IA32_MCx_CTL2 MSRs Jue Wang
2022-05-13 18:20 ` [PATCH v3 7/7] KVM: x86: Enable MCG_CMCI_P and handle injected UCNAs Jue Wang
2022-05-13 18:37 ` [PATCH v3 0/7] KVM: x86: Add CMCI and UCNA emulation David Matlack

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