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authorAvi Kivity <avi@qumranet.com>2007-01-26 00:56:40 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-01-26 13:50:57 -0800
commit6f00e68f210c0407dd666743ce61ae543cfd509d (patch)
tree03abbd7c7c2dbda3316e4f2db61adc20a0366062 /drivers
parentbce66ca4a2f695509e1b021311eb4de1e4fdf3e4 (diff)
[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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/kvm/kvm.h1
-rw-r--r--drivers/kvm/kvm_main.c17
2 files changed, 17 insertions, 1 deletions
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index 91e0c75aca8..2db1ca4c680 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -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;
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index be4651abe72..b10972ed0c9 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -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;
}