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-rw-r--r--arch/x86/kvm/emulate.c14
-rw-r--r--arch/x86/kvm/x86.c26
2 files changed, 19 insertions, 21 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 0ff7d4bd1bb..57e0e291b38 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)
3494 int rc = X86EMUL_CONTINUE; 3494 int rc = X86EMUL_CONTINUE;
3495 int saved_dst_type = c->dst.type; 3495 int saved_dst_type = c->dst.type;
3496 int irq; /* Used for int 3, int, and into */ 3496 int irq; /* Used for int 3, int, and into */
3497 struct desc_ptr desc_ptr;
3497 3498
3498 ctxt->decode.mem_read.pos = 0; 3499 ctxt->decode.mem_read.pos = 0;
3499 3500
@@ -4005,9 +4006,6 @@ twobyte_insn:
4005 switch (c->b) { 4006 switch (c->b) {
4006 case 0x01: /* lgdt, lidt, lmsw */ 4007 case 0x01: /* lgdt, lidt, lmsw */
4007 switch (c->modrm_reg) { 4008 switch (c->modrm_reg) {
4008 u16 size;
4009 unsigned long address;
4010
4011 case 0: /* vmcall */ 4009 case 0: /* vmcall */
4012 if (c->modrm_mod != 3 || c->modrm_rm != 1) 4010 if (c->modrm_mod != 3 || c->modrm_rm != 1)
4013 goto cannot_emulate; 4011 goto cannot_emulate;
@@ -4023,10 +4021,11 @@ twobyte_insn:
4023 break; 4021 break;
4024 case 2: /* lgdt */ 4022 case 2: /* lgdt */
4025 rc = read_descriptor(ctxt, ops, c->src.addr.mem, 4023 rc = read_descriptor(ctxt, ops, c->src.addr.mem,
4026 &size, &address, c->op_bytes); 4024 &desc_ptr.size, &desc_ptr.address,
4025 c->op_bytes);
4027 if (rc != X86EMUL_CONTINUE) 4026 if (rc != X86EMUL_CONTINUE)
4028 goto done; 4027 goto done;
4029 realmode_lgdt(ctxt->vcpu, size, address); 4028 ctxt->ops->set_gdt(ctxt, &desc_ptr);
4030 /* Disable writeback. */ 4029 /* Disable writeback. */
4031 c->dst.type = OP_NONE; 4030 c->dst.type = OP_NONE;
4032 break; 4031 break;
@@ -4041,11 +4040,12 @@ twobyte_insn:
4041 } 4040 }
4042 } else { 4041 } else {
4043 rc = read_descriptor(ctxt, ops, c->src.addr.mem, 4042 rc = read_descriptor(ctxt, ops, c->src.addr.mem,
4044 &size, &address, 4043 &desc_ptr.size,
4044 &desc_ptr.address,
4045 c->op_bytes); 4045 c->op_bytes);
4046 if (rc != X86EMUL_CONTINUE) 4046 if (rc != X86EMUL_CONTINUE)
4047 goto done; 4047 goto done;
4048 realmode_lidt(ctxt->vcpu, size, address); 4048 ctxt->ops->set_idt(ctxt, &desc_ptr);
4049 } 4049 }
4050 /* Disable writeback. */ 4050 /* Disable writeback. */
4051 c->dst.type = OP_NONE; 4051 c->dst.type = OP_NONE;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4f7248ea6ca..7cd3a3b491d 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)
4249 kvm_x86_ops->get_idt(emul_to_vcpu(ctxt), dt); 4249 kvm_x86_ops->get_idt(emul_to_vcpu(ctxt), dt);
4250} 4250}
4251 4251
4252static void emulator_set_gdt(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt)
4253{
4254 kvm_x86_ops->set_gdt(emul_to_vcpu(ctxt), dt);
4255}
4256
4257static void emulator_set_idt(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt)
4258{
4259 kvm_x86_ops->set_idt(emul_to_vcpu(ctxt), dt);
4260}
4261
4252static unsigned long emulator_get_cached_segment_base( 4262static unsigned long emulator_get_cached_segment_base(
4253 struct x86_emulate_ctxt *ctxt, int seg) 4263 struct x86_emulate_ctxt *ctxt, int seg)
4254{ 4264{
@@ -4388,6 +4398,8 @@ static struct x86_emulate_ops emulate_ops = {
4388 .get_cached_segment_base = emulator_get_cached_segment_base, 4398 .get_cached_segment_base = emulator_get_cached_segment_base,
4389 .get_gdt = emulator_get_gdt, 4399 .get_gdt = emulator_get_gdt,
4390 .get_idt = emulator_get_idt, 4400 .get_idt = emulator_get_idt,
4401 .set_gdt = emulator_set_gdt,
4402 .set_idt = emulator_set_idt,
4391 .get_cr = emulator_get_cr, 4403 .get_cr = emulator_get_cr,
4392 .set_cr = emulator_set_cr, 4404 .set_cr = emulator_set_cr,
4393 .cpl = emulator_get_cpl, 4405 .cpl = emulator_get_cpl,
@@ -5049,20 +5061,6 @@ int kvm_fix_hypercall(struct kvm_vcpu *vcpu)
5049 rip, instruction, 3, NULL); 5061 rip, instruction, 3, NULL);
5050} 5062}
5051 5063
5052void realmode_lgdt(struct kvm_vcpu *vcpu, u16 limit, unsigned long base)
5053{
5054 struct desc_ptr dt = { limit, base };
5055
5056 kvm_x86_ops->set_gdt(vcpu, &dt);
5057}
5058
5059void realmode_lidt(struct kvm_vcpu *vcpu, u16 limit, unsigned long base)
5060{
5061 struct desc_ptr dt = { limit, base };
5062
5063 kvm_x86_ops->set_idt(vcpu, &dt);
5064}
5065
5066static int move_to_next_stateful_cpuid_entry(struct kvm_vcpu *vcpu, int i) 5064static int move_to_next_stateful_cpuid_entry(struct kvm_vcpu *vcpu, int i)
5067{ 5065{
5068 struct kvm_cpuid_entry2 *e = &vcpu->arch.cpuid_entries[i]; 5066 struct kvm_cpuid_entry2 *e = &vcpu->arch.cpuid_entries[i];