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[PATCH] KVM: Emulate IA32_MISC_ENABLE msr 

This allows netbsd 3.1 i386 to get further along installing.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Avi Kivity 2007-01-26 00:56:40 -08:00 committed by Linus Torvalds
parent bce66ca4a2
commit 6f00e68f21
2 changed files with 17 additions and 1 deletions
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1
drivers/kvm/kvm.h
View File

@ -242,6 +242,7 @@ struct kvm_vcpu {
u64 pdptrs[4]; /* pae */
u64 shadow_efer;
u64 apic_base;
u64 ia32_misc_enable_msr;
int nmsrs;
struct vmx_msr_entry *guest_msrs;
struct vmx_msr_entry *host_msrs;

17
drivers/kvm/kvm_main.c
View File

@ -1226,6 +1226,9 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
case MSR_IA32_APICBASE:
data = vcpu->apic_base;
break;
case MSR_IA32_MISC_ENABLE:
data = vcpu->ia32_misc_enable_msr;
break;
#ifdef CONFIG_X86_64
case MSR_EFER:
data = vcpu->shadow_efer;
@ -1297,6 +1300,9 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
case MSR_IA32_APICBASE:
vcpu->apic_base = data;
break;
case MSR_IA32_MISC_ENABLE:
vcpu->ia32_misc_enable_msr = data;
break;
default:
printk(KERN_ERR "kvm: unhandled wrmsr: 0x%x\n", msr);
return 1;
@ -1600,6 +1606,10 @@ static u32 msrs_to_save[] = {
static unsigned num_msrs_to_save;
static u32 emulated_msrs[] = {
MSR_IA32_MISC_ENABLE,
};
static __init void kvm_init_msr_list(void)
{
u32 dummy[2];
@ -1925,7 +1935,7 @@ static long kvm_dev_ioctl(struct file *filp,
if (copy_from_user(&msr_list, user_msr_list, sizeof msr_list))
goto out;
n = msr_list.nmsrs;
msr_list.nmsrs = num_msrs_to_save;
msr_list.nmsrs = num_msrs_to_save + ARRAY_SIZE(emulated_msrs);
if (copy_to_user(user_msr_list, &msr_list, sizeof msr_list))
goto out;
r = -E2BIG;
@ -1935,6 +1945,11 @@ static long kvm_dev_ioctl(struct file *filp,
if (copy_to_user(user_msr_list->indices, &msrs_to_save,
num_msrs_to_save * sizeof(u32)))
goto out;
if (copy_to_user(user_msr_list->indices
+ num_msrs_to_save * sizeof(u32),
&emulated_msrs,
ARRAY_SIZE(emulated_msrs) * sizeof(u32)))
goto out;
r = 0;
break;
}