Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f00e68f210c0407dd666743ce61ae543cfd509d
Commit:     6f00e68f210c0407dd666743ce61ae543cfd509d
Parent:     bce66ca4a2f695509e1b021311eb4de1e4fdf3e4
Author:     Avi Kivity <[EMAIL PROTECTED]>
AuthorDate: Fri Jan 26 00:56:40 2007 -0800
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Fri Jan 26 13:50:57 2007 -0800

    [PATCH] KVM: Emulate IA32_MISC_ENABLE msr
    
    This allows netbsd 3.1 i386 to get further along installing.
    
    Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
 drivers/kvm/kvm.h      |    1 +
 drivers/kvm/kvm_main.c |   17 ++++++++++++++++-
 2 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index 91e0c75..2db1ca4 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 be4651a..b10972e 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;
        }
-
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