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| author | Izik Eidus <izike@qumranet.com> | 2008-03-24 19:38:34 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-04-27 12:00:38 +0300 |
| commit | 2e4d2653497856b102c90153f970c9e344ba96c6 (patch) | |
| tree | 8a1929d5caa1f9436c25a104f75403fb2b3e5e2f /arch/x86/kvm/vmx.c | |
| parent | 4c9fc8ef501790732ed035585b491756b75ea4c6 (diff) | |
| download | lwn-2e4d2653497856b102c90153f970c9e344ba96c6.tar.gz lwn-2e4d2653497856b102c90153f970c9e344ba96c6.zip | |
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>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 01559311df8c..9b560325b127 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -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, |