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| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-09-06 01:21:32 +1000 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 10:18:27 +0200 |
| commit | 1747fb71fd7c9389696e91f354d2f841b5c85790 (patch) | |
| tree | 8c0658884e62693a94c2ebd35f83331ffa083a7d /drivers/kvm | |
| parent | 81f50e3bfdf864103ef890ca156e7a9c922c7089 (diff) | |
| download | blackbird-op-linux-1747fb71fd7c9389696e91f354d2f841b5c85790.tar.gz blackbird-op-linux-1747fb71fd7c9389696e91f354d2f841b5c85790.zip | |
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: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm')
| -rw-r--r-- | drivers/kvm/kvm.h | 1 | ||||
| -rw-r--r-- | drivers/kvm/kvm_main.c | 10 | ||||
| -rw-r--r-- | drivers/kvm/svm.c | 10 |
3 files changed, 12 insertions, 9 deletions
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index 9bf9ac6389b1..ee9f8bdee755 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -586,6 +586,7 @@ void set_cr4(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); 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_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 7341c0949340..9dffbbea46a7 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -2270,6 +2270,16 @@ static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 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 * and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST. diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index e51f6b7f8ff3..35f3f83b5c6c 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -724,14 +724,6 @@ static void svm_get_segment(struct kvm_vcpu *vcpu, 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) { struct vcpu_svm *svm = to_svm(vcpu); @@ -1771,7 +1763,7 @@ static struct kvm_arch_ops svm_arch_ops = { .get_segment_base = svm_get_segment_base, .get_segment = svm_get_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, .set_cr0 = svm_set_cr0, .set_cr3 = svm_set_cr3, |
