Commit 1747fb71 authored by Rusty Russell's avatar Rusty Russell Committed by Avi Kivity

KVM: Hoist SVM's get_cs_db_l_bits into core code.

SVM gets the DB and L bits for the cs by decoding the segment.  This
is in fact the completely generic code, so hoist it for kvm-lite to use.
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 81f50e3b
...@@ -586,6 +586,7 @@ void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0); ...@@ -586,6 +586,7 @@ void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0); void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
unsigned long get_cr8(struct kvm_vcpu *vcpu); unsigned long get_cr8(struct kvm_vcpu *vcpu);
void lmsw(struct kvm_vcpu *vcpu, unsigned long msw); void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
......
...@@ -2270,6 +2270,16 @@ static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, ...@@ -2270,6 +2270,16 @@ static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
return 0; return 0;
} }
void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
{
struct kvm_segment cs;
get_segment(vcpu, &cs, VCPU_SREG_CS);
*db = cs.db;
*l = cs.l;
}
EXPORT_SYMBOL_GPL(kvm_get_cs_db_l_bits);
/* /*
* List of msr numbers which we expose to userspace through KVM_GET_MSRS * List of msr numbers which we expose to userspace through KVM_GET_MSRS
* and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST. * and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST.
......
...@@ -724,14 +724,6 @@ static void svm_get_segment(struct kvm_vcpu *vcpu, ...@@ -724,14 +724,6 @@ static void svm_get_segment(struct kvm_vcpu *vcpu,
var->unusable = !var->present; var->unusable = !var->present;
} }
static void svm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
{
struct vmcb_seg *s = svm_seg(vcpu, VCPU_SREG_CS);
*db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1;
*l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1;
}
static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
{ {
struct vcpu_svm *svm = to_svm(vcpu); struct vcpu_svm *svm = to_svm(vcpu);
...@@ -1771,7 +1763,7 @@ static struct kvm_arch_ops svm_arch_ops = { ...@@ -1771,7 +1763,7 @@ static struct kvm_arch_ops svm_arch_ops = {
.get_segment_base = svm_get_segment_base, .get_segment_base = svm_get_segment_base,
.get_segment = svm_get_segment, .get_segment = svm_get_segment,
.set_segment = svm_set_segment, .set_segment = svm_set_segment,
.get_cs_db_l_bits = svm_get_cs_db_l_bits, .get_cs_db_l_bits = kvm_get_cs_db_l_bits,
.decache_cr4_guest_bits = svm_decache_cr4_guest_bits, .decache_cr4_guest_bits = svm_decache_cr4_guest_bits,
.set_cr0 = svm_set_cr0, .set_cr0 = svm_set_cr0,
.set_cr3 = svm_set_cr3, .set_cr3 = svm_set_cr3,
......
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