Re: [PATCH] x86, kvm: use macros to compute bank MSRs
Il 23/09/2014 04:44, Chen Yucong ha scritto:
Avoid open coded calculations for bank MSRs by using well-defined
macros that hide the index of higher bank MSRs.
No semantic changes.
Signed-off-by: Chen Yucong sla...@gmail.com
---
arch/x86/kvm/x86.c |8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 31e55ae..e8c1e3b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1825,7 +1825,7 @@ static int set_msr_mce(struct kvm_vcpu *vcpu, u32 msr,
u64 data)
break;
default:
if (msr = MSR_IA32_MC0_CTL
- msr MSR_IA32_MC0_CTL + 4 * bank_num) {
+ msr MSR_IA32_MCx_CTL(bank_num)) {
u32 offset = msr - MSR_IA32_MC0_CTL;
/* only 0 or all 1s can be written to IA32_MCi_CTL
* some Linux kernels though clear bit 10 in bank 4 to
@@ -2184,7 +2184,7 @@ 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_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1:
+ case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_CTL(KVM_MAX_MCE_BANKS) - 1:
return set_msr_mce(vcpu, msr, data);
/* Performance counters are not protected by a CPUID bit,
@@ -2350,7 +2350,7 @@ static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr,
u64 *pdata)
break;
default:
if (msr = MSR_IA32_MC0_CTL
- msr MSR_IA32_MC0_CTL + 4 * bank_num) {
+ msr MSR_IA32_MCx_CTL(bank_num)) {
u32 offset = msr - MSR_IA32_MC0_CTL;
data = vcpu-arch.mce_banks[offset];
break;
@@ -2531,7 +2531,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr,
u64 *pdata)
case MSR_IA32_MCG_CAP:
case MSR_IA32_MCG_CTL:
case MSR_IA32_MCG_STATUS:
- case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1:
+ case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_CTL(KVM_MAX_MCE_BANKS) - 1:
return get_msr_mce(vcpu, msr, pdata);
case MSR_K7_CLK_CTL:
/*
Thanks, applied.
Paolo
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[PATCH] x86, kvm: use macros to compute bank MSRs
Avoid open coded calculations for bank MSRs by using well-defined
macros that hide the index of higher bank MSRs.
No semantic changes.
Signed-off-by: Chen Yucong sla...@gmail.com
---
arch/x86/kvm/x86.c |8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 31e55ae..e8c1e3b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1825,7 +1825,7 @@ static int set_msr_mce(struct kvm_vcpu *vcpu, u32 msr,
u64 data)
break;
default:
if (msr = MSR_IA32_MC0_CTL
- msr MSR_IA32_MC0_CTL + 4 * bank_num) {
+ msr MSR_IA32_MCx_CTL(bank_num)) {
u32 offset = msr - MSR_IA32_MC0_CTL;
/* only 0 or all 1s can be written to IA32_MCi_CTL
* some Linux kernels though clear bit 10 in bank 4 to
@@ -2184,7 +2184,7 @@ 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_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1:
+ case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_CTL(KVM_MAX_MCE_BANKS) - 1:
return set_msr_mce(vcpu, msr, data);
/* Performance counters are not protected by a CPUID bit,
@@ -2350,7 +2350,7 @@ static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr,
u64 *pdata)
break;
default:
if (msr = MSR_IA32_MC0_CTL
- msr MSR_IA32_MC0_CTL + 4 * bank_num) {
+ msr MSR_IA32_MCx_CTL(bank_num)) {
u32 offset = msr - MSR_IA32_MC0_CTL;
data = vcpu-arch.mce_banks[offset];
break;
@@ -2531,7 +2531,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr,
u64 *pdata)
case MSR_IA32_MCG_CAP:
case MSR_IA32_MCG_CTL:
case MSR_IA32_MCG_STATUS:
- case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1:
+ case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_CTL(KVM_MAX_MCE_BANKS) - 1:
return get_msr_mce(vcpu, msr, pdata);
case MSR_K7_CLK_CTL:
/*
--
1.7.10.4
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