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KVM: x86: add functions to get the cpl of vcpu 

Signed-off-by: Izik Eidus <izike@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Izik Eidus 2008-03-24 19:38:34 +02:00 committed by Avi Kivity
parent 4c9fc8ef50
commit 2e4d265349
3 changed files with 24 additions and 0 deletions
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8
arch/x86/kvm/svm.c
View File

@ -792,6 +792,13 @@ static void svm_get_segment(struct kvm_vcpu *vcpu,
var->unusable = !var->present;
}
static int svm_get_cpl(struct kvm_vcpu *vcpu)
{
struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save;
return save->cpl;
}
static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
{
struct vcpu_svm *svm = to_svm(vcpu);
@ -1822,6 +1829,7 @@ static struct kvm_x86_ops svm_x86_ops = {
.get_segment_base = svm_get_segment_base,
.get_segment = svm_get_segment,
.set_segment = svm_set_segment,
.get_cpl = svm_get_cpl,
.get_cs_db_l_bits = kvm_get_cs_db_l_bits,
.decache_cr4_guest_bits = svm_decache_cr4_guest_bits,
.set_cr0 = svm_set_cr0,

15
arch/x86/kvm/vmx.c
View File

@ -1395,6 +1395,20 @@ static void vmx_get_segment(struct kvm_vcpu *vcpu,
var->unusable = (ar >> 16) & 1;
}
static int vmx_get_cpl(struct kvm_vcpu *vcpu)
{
struct kvm_segment kvm_seg;
if (!(vcpu->arch.cr0 & X86_CR0_PE)) /* if real mode */
return 0;
if (vmx_get_rflags(vcpu) & X86_EFLAGS_VM) /* if virtual 8086 */
return 3;
vmx_get_segment(vcpu, &kvm_seg, VCPU_SREG_CS);
return kvm_seg.selector & 3;
}
static u32 vmx_segment_access_rights(struct kvm_segment *var)
{
u32 ar;
@ -2665,6 +2679,7 @@ static struct kvm_x86_ops vmx_x86_ops = {
.get_segment_base = vmx_get_segment_base,
.get_segment = vmx_get_segment,
.set_segment = vmx_set_segment,
.get_cpl = vmx_get_cpl,
.get_cs_db_l_bits = vmx_get_cs_db_l_bits,
.decache_cr4_guest_bits = vmx_decache_cr4_guest_bits,
.set_cr0 = vmx_set_cr0,

1
include/asm-x86/kvm_host.h
View File

@ -388,6 +388,7 @@ struct kvm_x86_ops {
u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
void (*get_segment)(struct kvm_vcpu *vcpu,
struct kvm_segment *var, int seg);
int (*get_cpl)(struct kvm_vcpu *vcpu);
void (*set_segment)(struct kvm_vcpu *vcpu,
struct kvm_segment *var, int seg);
void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);