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Commit 35aa5375 authored by Gleb Natapov's avatar Gleb Natapov Committed by Avi Kivity
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KVM: x86 emulator: add (set|get)_dr callbacks to x86_emulate_ops 



Add (set|get)_dr callbacks to x86_emulate_ops instead of calling
them directly.

Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 414e6277

arch/x86/include/asm/kvm_emulate.h

+2 −0
Original line number Diff line number Diff line
@@ -137,6 +137,8 @@ struct x86_emulate_ops { 
	void (*set_cr)(int cr, ulong val, struct kvm_vcpu *vcpu);

	int (*cpl)(struct kvm_vcpu *vcpu);

	void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);

	int (*get_dr)(int dr, unsigned long *dest, struct kvm_vcpu *vcpu);

	int (*set_dr)(int dr, unsigned long value, struct kvm_vcpu *vcpu);

};



/* Type, address-of, and value of an instruction's operand. */

arch/x86/include/asm/kvm_host.h

+0 −4
Original line number Diff line number Diff line
@@ -591,10 +591,6 @@ void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); 
int kvm_emulate_halt(struct kvm_vcpu *vcpu);

int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);

int emulate_clts(struct kvm_vcpu *vcpu);

int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,

		    unsigned long *dest);

int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,

		    unsigned long value);



void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);

int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);

arch/x86/kvm/emulate.c

+5 −2
Original line number Diff line number Diff line
@@ -3132,7 +3132,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
			kvm_queue_exception(ctxt->vcpu, UD_VECTOR);

			goto done;

		}

		emulator_get_dr(ctxt, c->modrm_reg, &c->regs[c->modrm_rm]);

		ops->get_dr(c->modrm_reg, &c->regs[c->modrm_rm], ctxt->vcpu);

		c->dst.type = OP_NONE;	/* no writeback */

		break;

	case 0x22: /* mov reg, cr */
@@ -3145,7 +3145,10 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
			kvm_queue_exception(ctxt->vcpu, UD_VECTOR);

			goto done;

		}

		emulator_set_dr(ctxt, c->modrm_reg, c->regs[c->modrm_rm]);



		ops->set_dr(c->modrm_reg,c->regs[c->modrm_rm] &

			    ((ctxt->mode == X86EMUL_MODE_PROT64) ? ~0ULL : ~0U),

			ctxt->vcpu);

		c->dst.type = OP_NONE;	/* no writeback */

		break;

	case 0x30:

arch/x86/kvm/x86.c

+6 −6
Original line number Diff line number Diff line
@@ -3620,16 +3620,14 @@ int emulate_clts(struct kvm_vcpu *vcpu) 
	return X86EMUL_CONTINUE;

}



int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr, unsigned long *dest)

int emulator_get_dr(int dr, unsigned long *dest, struct kvm_vcpu *vcpu)

{

	return kvm_get_dr(ctxt->vcpu, dr, dest);

	return kvm_get_dr(vcpu, dr, dest);

}



int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, unsigned long value)

int emulator_set_dr(int dr, unsigned long value, struct kvm_vcpu *vcpu)

{

	unsigned long mask = (ctxt->mode == X86EMUL_MODE_PROT64) ? ~0ULL : ~0U;



	return kvm_set_dr(ctxt->vcpu, dr, value & mask);

	return kvm_set_dr(vcpu, dr, value);

}



void kvm_report_emulation_failure(struct kvm_vcpu *vcpu, const char *context)
@@ -3811,6 +3809,8 @@ static struct x86_emulate_ops emulate_ops = { 
	.set_cr              = emulator_set_cr,

	.cpl                 = emulator_get_cpl,

	.set_rflags          = emulator_set_rflags,

	.get_dr              = emulator_get_dr,

	.set_dr              = emulator_set_dr,

};



static void cache_all_regs(struct kvm_vcpu *vcpu)