diff options
| author | Avi Kivity <avi@redhat.com> | 2011-04-20 15:12:00 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-05-22 08:39:08 -0400 |
| commit | 1ac9d0cfb07e8ac3b5007d8279c5bd56e124250c (patch) | |
| tree | 3c6b9179039511476353d4e24dd18042104f10a2 /arch/x86/kvm | |
| parent | fe870ab9ce1c3e64c6d6b6ee3fe53d0d029f1044 (diff) | |
KVM: x86 emulator: add and use new callbacks set_idt(), set_gdt()
Replacing direct calls to realmode_lgdt(), realmode_lidt().
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 14 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 26 |
2 files changed, 19 insertions, 21 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 0ff7d4bd1bb2..57e0e291b38d 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3494,6 +3494,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt) int rc = X86EMUL_CONTINUE; int saved_dst_type = c->dst.type; int irq; /* Used for int 3, int, and into */ + struct desc_ptr desc_ptr; ctxt->decode.mem_read.pos = 0; @@ -4005,9 +4006,6 @@ twobyte_insn: switch (c->b) { case 0x01: /* lgdt, lidt, lmsw */ switch (c->modrm_reg) { - u16 size; - unsigned long address; - case 0: /* vmcall */ if (c->modrm_mod != 3 || c->modrm_rm != 1) goto cannot_emulate; @@ -4023,10 +4021,11 @@ twobyte_insn: break; case 2: /* lgdt */ rc = read_descriptor(ctxt, ops, c->src.addr.mem, - &size, &address, c->op_bytes); + &desc_ptr.size, &desc_ptr.address, + c->op_bytes); if (rc != X86EMUL_CONTINUE) goto done; - realmode_lgdt(ctxt->vcpu, size, address); + ctxt->ops->set_gdt(ctxt, &desc_ptr); /* Disable writeback. */ c->dst.type = OP_NONE; break; @@ -4041,11 +4040,12 @@ twobyte_insn: } } else { rc = read_descriptor(ctxt, ops, c->src.addr.mem, - &size, &address, + &desc_ptr.size, + &desc_ptr.address, c->op_bytes); if (rc != X86EMUL_CONTINUE) goto done; - realmode_lidt(ctxt->vcpu, size, address); + ctxt->ops->set_idt(ctxt, &desc_ptr); } /* Disable writeback. */ c->dst.type = OP_NONE; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 4f7248ea6caf..7cd3a3b491de 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4249,6 +4249,16 @@ static void emulator_get_idt(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt) kvm_x86_ops->get_idt(emul_to_vcpu(ctxt), dt); } +static void emulator_set_gdt(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt) +{ + kvm_x86_ops->set_gdt(emul_to_vcpu(ctxt), dt); +} + +static void emulator_set_idt(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt) +{ + kvm_x86_ops->set_idt(emul_to_vcpu(ctxt), dt); +} + static unsigned long emulator_get_cached_segment_base( struct x86_emulate_ctxt *ctxt, int seg) { @@ -4388,6 +4398,8 @@ static struct x86_emulate_ops emulate_ops = { .get_cached_segment_base = emulator_get_cached_segment_base, .get_gdt = emulator_get_gdt, .get_idt = emulator_get_idt, + .set_gdt = emulator_set_gdt, + .set_idt = emulator_set_idt, .get_cr = emulator_get_cr, .set_cr = emulator_set_cr, .cpl = emulator_get_cpl, @@ -5049,20 +5061,6 @@ int kvm_fix_hypercall(struct kvm_vcpu *vcpu) rip, instruction, 3, NULL); } -void realmode_lgdt(struct kvm_vcpu *vcpu, u16 limit, unsigned long base) -{ - struct desc_ptr dt = { limit, base }; - - kvm_x86_ops->set_gdt(vcpu, &dt); -} - -void realmode_lidt(struct kvm_vcpu *vcpu, u16 limit, unsigned long base) -{ - struct desc_ptr dt = { limit, base }; - - kvm_x86_ops->set_idt(vcpu, &dt); -} - static int move_to_next_stateful_cpuid_entry(struct kvm_vcpu *vcpu, int i) { struct kvm_cpuid_entry2 *e = &vcpu->arch.cpuid_entries[i]; |