From 9aabc88fc8687ba3a520e2ec459821d05f72474e Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Thu, 29 Jul 2010 15:11:50 +0300 Subject: [PATCH] KVM: x86 emulator: store x86_emulate_ops in emulation context It doesn't ever change, so we don't need to pass it around everywhere. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti --- arch/x86/include/asm/kvm_emulate.h | 9 ++++----- arch/x86/kvm/emulate.c | 8 +++++--- arch/x86/kvm/x86.c | 7 ++++--- 3 files changed, 13 insertions(+), 11 deletions(-) diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 1f99ecfc48e1..9ddfa5ed2289 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -208,6 +208,8 @@ struct decode_cache { }; struct x86_emulate_ctxt { + struct x86_emulate_ops *ops; + /* Register state before/after emulation. */ struct kvm_vcpu *vcpu; @@ -249,12 +251,9 @@ struct x86_emulate_ctxt { #define X86EMUL_MODE_HOST X86EMUL_MODE_PROT64 #endif -int x86_decode_insn(struct x86_emulate_ctxt *ctxt, - struct x86_emulate_ops *ops); -int x86_emulate_insn(struct x86_emulate_ctxt *ctxt, - struct x86_emulate_ops *ops); +int x86_decode_insn(struct x86_emulate_ctxt *ctxt); +int x86_emulate_insn(struct x86_emulate_ctxt *ctxt); int emulator_task_switch(struct x86_emulate_ctxt *ctxt, - struct x86_emulate_ops *ops, u16 tss_selector, int reason, bool has_error_code, u32 error_code); diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index d7e3ea4797f1..3689f34a303a 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -943,8 +943,9 @@ done: } int -x86_decode_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) +x86_decode_insn(struct x86_emulate_ctxt *ctxt) { + struct x86_emulate_ops *ops = ctxt->ops; struct decode_cache *c = &ctxt->decode; int rc = X86EMUL_CONTINUE; int mode = ctxt->mode; @@ -2586,10 +2587,10 @@ static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt, } int emulator_task_switch(struct x86_emulate_ctxt *ctxt, - struct x86_emulate_ops *ops, u16 tss_selector, int reason, bool has_error_code, u32 error_code) { + struct x86_emulate_ops *ops = ctxt->ops; struct decode_cache *c = &ctxt->decode; int rc; @@ -2619,8 +2620,9 @@ static void string_addr_inc(struct x86_emulate_ctxt *ctxt, unsigned long base, } int -x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) +x86_emulate_insn(struct x86_emulate_ctxt *ctxt) { + struct x86_emulate_ops *ops = ctxt->ops; u64 msr_data; struct decode_cache *c = &ctxt->decode; int rc = X86EMUL_CONTINUE; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 3a09c625d526..33deb75f16ee 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3998,7 +3998,7 @@ int emulate_instruction(struct kvm_vcpu *vcpu, vcpu->arch.emulate_ctxt.interruptibility = 0; vcpu->arch.emulate_ctxt.exception = -1; - r = x86_decode_insn(&vcpu->arch.emulate_ctxt, &emulate_ops); + r = x86_decode_insn(&vcpu->arch.emulate_ctxt); trace_kvm_emulate_insn_start(vcpu); /* Only allow emulation of specific instructions on #UD @@ -4048,7 +4048,7 @@ int emulate_instruction(struct kvm_vcpu *vcpu, memcpy(c->regs, vcpu->arch.regs, sizeof c->regs); restart: - r = x86_emulate_insn(&vcpu->arch.emulate_ctxt, &emulate_ops); + r = x86_emulate_insn(&vcpu->arch.emulate_ctxt); if (r) { /* emulation failed */ if (reexecute_instruction(vcpu, cr2)) @@ -5067,7 +5067,7 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason, memset(c, 0, sizeof(struct decode_cache)); memcpy(c->regs, vcpu->arch.regs, sizeof c->regs); - ret = emulator_task_switch(&vcpu->arch.emulate_ctxt, &emulate_ops, + ret = emulator_task_switch(&vcpu->arch.emulate_ctxt, tss_selector, reason, has_error_code, error_code); @@ -5424,6 +5424,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) BUG_ON(vcpu->kvm == NULL); kvm = vcpu->kvm; + vcpu->arch.emulate_ctxt.ops = &emulate_ops; vcpu->arch.mmu.root_hpa = INVALID_PAGE; if (!irqchip_in_kernel(kvm) || kvm_vcpu_is_bsp(vcpu)) vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; -- 2.39.5