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Kernel
提交 3bab1f5d 编写于 作者: A Avi Kivity 提交者： Linus Torvalds
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[PATCH] KVM: Move common msr handling to arch independent code 

Signed-off-by: NAvi Kivity <avi@qumranet.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 671d6564
隐藏空白更改
内联 并排
Showing with 84 addition and 98 deletion
drivers/kvm/kvm.h
浏览文件 @ 3bab1f5d
......@@ -374,9 +374,8 @@ void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
#ifdef CONFIG_X86_64
void set_efer(struct kvm_vcpu *vcpu, u64 efer);
#endif
int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
void fx_init(struct kvm_vcpu *vcpu);
......
drivers/kvm/kvm_main.c
浏览文件 @ 3bab1f5d
......@@ -1103,6 +1103,47 @@ void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long val,
}
}
int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
{
u64 data;
switch (msr) {
case 0xc0010010: /* SYSCFG */
case 0xc0010015: /* HWCR */
case MSR_IA32_PLATFORM_ID:
case MSR_IA32_P5_MC_ADDR:
case MSR_IA32_P5_MC_TYPE:
case MSR_IA32_MC0_CTL:
case MSR_IA32_MCG_STATUS:
case MSR_IA32_MCG_CAP:
case MSR_IA32_MC0_MISC:
case MSR_IA32_MC0_MISC+4:
case MSR_IA32_MC0_MISC+8:
case MSR_IA32_MC0_MISC+12:
case MSR_IA32_MC0_MISC+16:
case MSR_IA32_UCODE_REV:
/* MTRR registers */
case 0xfe:
case 0x200 ... 0x2ff:
data = 0;
break;
case MSR_IA32_APICBASE:
data = vcpu->apic_base;
break;
#ifdef CONFIG_X86_64
case MSR_EFER:
data = vcpu->shadow_efer;
break;
#endif
default:
printk(KERN_ERR "kvm: unhandled rdmsr: 0x%x\n", msr);
return 1;
}
*pdata = data;
return 0;
}
EXPORT_SYMBOL_GPL(kvm_get_msr_common);
/*
* Reads an msr value (of 'msr_index') into 'pdata'.
* Returns 0 on success, non-0 otherwise.
......@@ -1115,7 +1156,7 @@ static int get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
#ifdef CONFIG_X86_64
void set_efer(struct kvm_vcpu *vcpu, u64 efer)
static void set_efer(struct kvm_vcpu *vcpu, u64 efer)
{
if (efer & EFER_RESERVED_BITS) {
printk(KERN_DEBUG "set_efer: 0x%llx #GP, reserved bits\n",
......@@ -1138,10 +1179,36 @@ void set_efer(struct kvm_vcpu *vcpu, u64 efer)
vcpu->shadow_efer = efer;
}
EXPORT_SYMBOL_GPL(set_efer);
#endif
int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
{
switch (msr) {
#ifdef CONFIG_X86_64
case MSR_EFER:
set_efer(vcpu, data);
break;
#endif
case MSR_IA32_MC0_STATUS:
printk(KERN_WARNING "%s: MSR_IA32_MC0_STATUS 0x%llx, nop\n",
__FUNCTION__, data);
break;
case MSR_IA32_UCODE_REV:
case MSR_IA32_UCODE_WRITE:
case 0x200 ... 0x2ff: /* MTRRs */
break;
case MSR_IA32_APICBASE:
vcpu->apic_base = data;
break;
default:
printk(KERN_ERR "kvm: unhandled wrmsr: 0x%x\n", msr);
return 1;
}
return 0;
}
EXPORT_SYMBOL_GPL(kvm_set_msr_common);
/*
* Writes msr value into into the appropriate "register".
* Returns 0 on success, non-0 otherwise.
......
drivers/kvm/svm.c
浏览文件 @ 3bab1f5d
......@@ -1068,25 +1068,6 @@ static int emulate_on_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_ru
static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
{
switch (ecx) {
case 0xc0010010: /* SYSCFG */
case 0xc0010015: /* HWCR */
case MSR_IA32_PLATFORM_ID:
case MSR_IA32_P5_MC_ADDR:
case MSR_IA32_P5_MC_TYPE:
case MSR_IA32_MC0_CTL:
case MSR_IA32_MCG_STATUS:
case MSR_IA32_MCG_CAP:
case MSR_IA32_MC0_MISC:
case MSR_IA32_MC0_MISC+4:
case MSR_IA32_MC0_MISC+8:
case MSR_IA32_MC0_MISC+12:
case MSR_IA32_MC0_MISC+16:
case MSR_IA32_UCODE_REV:
/* MTRR registers */
case 0xfe:
case 0x200 ... 0x2ff:
*data = 0;
break;
case MSR_IA32_TIME_STAMP_COUNTER: {
u64 tsc;
......@@ -1094,12 +1075,6 @@ static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
*data = vcpu->svm->vmcb->control.tsc_offset + tsc;
break;
}
case MSR_EFER:
*data = vcpu->shadow_efer;
break;
case MSR_IA32_APICBASE:
*data = vcpu->apic_base;
break;
case MSR_K6_STAR:
*data = vcpu->svm->vmcb->save.star;
break;
......@@ -1127,8 +1102,7 @@ static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
*data = vcpu->svm->vmcb->save.sysenter_esp;
break;
default:
printk(KERN_ERR "kvm: unhandled rdmsr: 0x%x\n", ecx);
return 1;
return kvm_get_msr_common(vcpu, ecx, data);
}
return 0;
}
......@@ -1152,15 +1126,6 @@ static int rdmsr_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data)
{
switch (ecx) {
#ifdef CONFIG_X86_64
case MSR_EFER:
set_efer(vcpu, data);
break;
#endif
case MSR_IA32_MC0_STATUS:
printk(KERN_WARNING "%s: MSR_IA32_MC0_STATUS 0x%llx, nop\n"
, __FUNCTION__, data);
break;
case MSR_IA32_TIME_STAMP_COUNTER: {
u64 tsc;
......@@ -1168,13 +1133,6 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data)
vcpu->svm->vmcb->control.tsc_offset = data - tsc;
break;
}
case MSR_IA32_UCODE_REV:
case MSR_IA32_UCODE_WRITE:
case 0x200 ... 0x2ff: /* MTRRs */
break;
case MSR_IA32_APICBASE:
vcpu->apic_base = data;
break;
case MSR_K6_STAR:
vcpu->svm->vmcb->save.star = data;
break;
......@@ -1202,8 +1160,7 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data)
vcpu->svm->vmcb->save.sysenter_esp = data;
break;
default:
printk(KERN_ERR "kvm: unhandled wrmsr: %x\n", ecx);
return 1;
return kvm_set_msr_common(vcpu, ecx, data);
}
return 0;
}
......
drivers/kvm/vmx.c
浏览文件 @ 3bab1f5d
......@@ -344,8 +344,7 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
data = vmcs_readl(GUEST_GS_BASE);
break;
case MSR_EFER:
data = vcpu->shadow_efer;
break;
return kvm_get_msr_common(vcpu, msr_index, pdata);
#endif
case MSR_IA32_TIME_STAMP_COUNTER:
data = guest_read_tsc();
......@@ -359,36 +358,13 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
case MSR_IA32_SYSENTER_ESP:
data = vmcs_read32(GUEST_SYSENTER_ESP);
break;
case 0xc0010010: /* SYSCFG */
case 0xc0010015: /* HWCR */
case MSR_IA32_PLATFORM_ID:
case MSR_IA32_P5_MC_ADDR:
case MSR_IA32_P5_MC_TYPE:
case MSR_IA32_MC0_CTL:
case MSR_IA32_MCG_STATUS:
case MSR_IA32_MCG_CAP:
case MSR_IA32_MC0_MISC:
case MSR_IA32_MC0_MISC+4:
case MSR_IA32_MC0_MISC+8:
case MSR_IA32_MC0_MISC+12:
case MSR_IA32_MC0_MISC+16:
case MSR_IA32_UCODE_REV:
/* MTRR registers */
case 0xfe:
case 0x200 ... 0x2ff:
data = 0;
break;
case MSR_IA32_APICBASE:
data = vcpu->apic_base;
break;
default:
msr = find_msr_entry(vcpu, msr_index);
if (!msr) {
printk(KERN_ERR "kvm: unhandled rdmsr: %x\n", msr_index);
return 1;
if (msr) {
data = msr->data;
break;
}
data = msr->data;
break;
return kvm_get_msr_common(vcpu, msr_index, pdata);
}
*pdata = data;
......@@ -405,6 +381,8 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
struct vmx_msr_entry *msr;
switch (msr_index) {
#ifdef CONFIG_X86_64
case MSR_EFER:
return kvm_set_msr_common(vcpu, msr_index, data);
case MSR_FS_BASE:
vmcs_writel(GUEST_FS_BASE, data);
break;
......@@ -421,32 +399,17 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
case MSR_IA32_SYSENTER_ESP:
vmcs_write32(GUEST_SYSENTER_ESP, data);
break;
#ifdef __x86_64
case MSR_EFER:
set_efer(vcpu, data);
break;
case MSR_IA32_MC0_STATUS:
printk(KERN_WARNING "%s: MSR_IA32_MC0_STATUS 0x%llx, nop\n"
, __FUNCTION__, data);
break;
#endif
case MSR_IA32_TIME_STAMP_COUNTER: {
guest_write_tsc(data);
break;
}
case MSR_IA32_UCODE_REV:
case MSR_IA32_UCODE_WRITE:
case 0x200 ... 0x2ff: /* MTRRs */
break;
case MSR_IA32_APICBASE:
vcpu->apic_base = data;
break;
default:
msr = find_msr_entry(vcpu, msr_index);
if (!msr) {
printk(KERN_ERR "kvm: unhandled wrmsr: 0x%x\n", msr_index);
return 1;
if (msr) {
msr->data = data;
break;
}
return kvm_set_msr_common(vcpu, msr_index, data);
msr->data = data;
break;
}
......
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