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Subject[RFC 1/6] x86/kvm: rename HV_X64_MSR_APIC_ASSIST_PAGE to HV_X64_MSR_VP_ASSIST_PAGE
Date
From: Ladi Prosek <lprosek@redhat.com>

The assist page has been used only for the paravirtual EOI so far, hence
the "APIC" in the MSR name. Renaming to match the Hyper-V TLFS where it's
called "Virtual VP Assist MSR".

Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
arch/x86/include/uapi/asm/hyperv.h | 10 +++++-----
arch/x86/kvm/hyperv.c | 8 ++++----
arch/x86/kvm/lapic.h | 2 +-
arch/x86/kvm/x86.c | 2 +-
4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/arch/x86/include/uapi/asm/hyperv.h b/arch/x86/include/uapi/asm/hyperv.h
index 1a5bfead93b4..a742af3e8408 100644
--- a/arch/x86/include/uapi/asm/hyperv.h
+++ b/arch/x86/include/uapi/asm/hyperv.h
@@ -186,7 +186,7 @@
#define HV_X64_MSR_EOI 0x40000070
#define HV_X64_MSR_ICR 0x40000071
#define HV_X64_MSR_TPR 0x40000072
-#define HV_X64_MSR_APIC_ASSIST_PAGE 0x40000073
+#define HV_X64_MSR_VP_ASSIST_PAGE 0x40000073

/* Define synthetic interrupt controller model specific registers. */
#define HV_X64_MSR_SCONTROL 0x40000080
@@ -248,10 +248,10 @@
#define HVCALL_POST_MESSAGE 0x005c
#define HVCALL_SIGNAL_EVENT 0x005d

-#define HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE 0x00000001
-#define HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT 12
-#define HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_MASK \
- (~((1ull << HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT) - 1))
+#define HV_X64_MSR_VP_ASSIST_PAGE_ENABLE 0x00000001
+#define HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT 12
+#define HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_MASK \
+ (~((1ull << HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT) - 1))

#define HV_X64_MSR_TSC_REFERENCE_ENABLE 0x00000001
#define HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT 12
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index dc97f2544b6f..9fb0ed9b1670 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -1009,17 +1009,17 @@ static int kvm_hv_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host)
return 1;
hv->vp_index = (u32)data;
break;
- case HV_X64_MSR_APIC_ASSIST_PAGE: {
+ case HV_X64_MSR_VP_ASSIST_PAGE: {
u64 gfn;
unsigned long addr;

- if (!(data & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE)) {
+ if (!(data & HV_X64_MSR_VP_ASSIST_PAGE_ENABLE)) {
hv->hv_vapic = data;
if (kvm_lapic_enable_pv_eoi(vcpu, 0))
return 1;
break;
}
- gfn = data >> HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT;
+ gfn = data >> HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT;
addr = kvm_vcpu_gfn_to_hva(vcpu, gfn);
if (kvm_is_error_hva(addr))
return 1;
@@ -1129,7 +1129,7 @@ static int kvm_hv_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
return kvm_hv_vapic_msr_read(vcpu, APIC_ICR, pdata);
case HV_X64_MSR_TPR:
return kvm_hv_vapic_msr_read(vcpu, APIC_TASKPRI, pdata);
- case HV_X64_MSR_APIC_ASSIST_PAGE:
+ case HV_X64_MSR_VP_ASSIST_PAGE:
data = hv->hv_vapic;
break;
case HV_X64_MSR_VP_RUNTIME:
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 56c36014f7b7..edce055e9fd7 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -109,7 +109,7 @@ int kvm_hv_vapic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data);

static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu)
{
- return vcpu->arch.hyperv.hv_vapic & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE;
+ return vcpu->arch.hyperv.hv_vapic & HV_X64_MSR_VP_ASSIST_PAGE_ENABLE;
}

int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 35b14f074f6b..76b729764fd9 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1050,7 +1050,7 @@ static u32 emulated_msrs[] = {
HV_X64_MSR_VP_RUNTIME,
HV_X64_MSR_SCONTROL,
HV_X64_MSR_STIMER0_CONFIG,
- HV_X64_MSR_APIC_ASSIST_PAGE, MSR_KVM_ASYNC_PF_EN, MSR_KVM_STEAL_TIME,
+ HV_X64_MSR_VP_ASSIST_PAGE, MSR_KVM_ASYNC_PF_EN, MSR_KVM_STEAL_TIME,
MSR_KVM_PV_EOI_EN,

MSR_IA32_TSC_ADJUST,
--
2.14.3
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