[PATCH v3 3/7] KVM: x86: Add APIC_LVTx() macro.

[Jue Wang <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 third 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 | 7 +++----
 arch/x86/kvm/lapic.h | 2 ++
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 0886fb6adbcd..c01f6ecb3d12 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2041,9 +2041,8 @@ int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
 			u32 lvt_val;
 
 			for (i = 0; i < KVM_APIC_MAX_NR_LVT_ENTRIES; i++) {
-				lvt_val = kvm_lapic_get_reg(apic,
-						       APIC_LVTT + 0x10 * i);
-				kvm_lapic_set_reg(apic, APIC_LVTT + 0x10 * i,
+				lvt_val = kvm_lapic_get_reg(apic, APIC_LVTx(i));
+				kvm_lapic_set_reg(apic, APIC_LVTx(i),
 					     lvt_val | APIC_LVT_MASKED);
 			}
 			apic_update_lvtt(apic);
@@ -2343,7 +2342,7 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event)
 	kvm_apic_set_version(apic->vcpu);
 
 	for (i = 0; i < KVM_APIC_MAX_NR_LVT_ENTRIES; i++)
-		kvm_lapic_set_reg(apic, APIC_LVTT + 0x10 * i, APIC_LVT_MASKED);
+		kvm_lapic_set_reg(apic, APIC_LVTx(i), APIC_LVT_MASKED);
 	apic_update_lvtt(apic);
 	if (kvm_vcpu_is_reset_bsp(vcpu) &&
 	    kvm_check_has_quirk(vcpu->kvm, KVM_X86_QUIRK_LINT0_REENABLED))
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index f8368dca177a..7ba4c548853e 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -39,6 +39,8 @@ enum lapic_lvt_entry {
 	KVM_APIC_MAX_NR_LVT_ENTRIES,
 };
 
+#define APIC_LVTx(x) (APIC_LVTT + 0x10 * (x))
+
 struct kvm_timer {
 	struct hrtimer timer;
 	s64 period; 				/* unit: ns */
-- 
2.36.0.550.gb090851708-goog