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Diffstat (limited to 'arch/x86/kvm/x86.c')
-rw-r--r--arch/x86/kvm/x86.c57
1 files changed, 28 insertions, 29 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 92b6690d0512..a83b269126a0 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5451,7 +5451,7 @@ int handle_ud(struct kvm_vcpu *vcpu)
emul_type = EMULTYPE_TRAP_UD_FORCED;
}
- return kvm_emulate_instruction(vcpu, emul_type) != EMULATE_USER_EXIT;
+ return kvm_emulate_instruction(vcpu, emul_type);
}
EXPORT_SYMBOL_GPL(handle_ud);
@@ -6302,14 +6302,14 @@ static int handle_emulation_failure(struct kvm_vcpu *vcpu, int emulation_type)
if (emulation_type & EMULTYPE_VMWARE_GP) {
kvm_queue_exception_e(vcpu, GP_VECTOR, 0);
- return EMULATE_DONE;
+ return 1;
}
if (emulation_type & EMULTYPE_SKIP) {
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
vcpu->run->internal.ndata = 0;
- return EMULATE_USER_EXIT;
+ return 0;
}
kvm_queue_exception(vcpu, UD_VECTOR);
@@ -6318,10 +6318,10 @@ static int handle_emulation_failure(struct kvm_vcpu *vcpu, int emulation_type)
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
vcpu->run->internal.ndata = 0;
- return EMULATE_USER_EXIT;
+ return 0;
}
- return EMULATE_DONE;
+ return 1;
}
static bool reexecute_instruction(struct kvm_vcpu *vcpu, gva_t cr2,
@@ -6485,10 +6485,10 @@ static int kvm_vcpu_do_singlestep(struct kvm_vcpu *vcpu)
kvm_run->debug.arch.pc = vcpu->arch.singlestep_rip;
kvm_run->debug.arch.exception = DB_VECTOR;
kvm_run->exit_reason = KVM_EXIT_DEBUG;
- return EMULATE_USER_EXIT;
+ return 0;
}
kvm_queue_exception_p(vcpu, DB_VECTOR, DR6_BS);
- return EMULATE_DONE;
+ return 1;
}
int kvm_skip_emulated_instruction(struct kvm_vcpu *vcpu)
@@ -6497,7 +6497,7 @@ int kvm_skip_emulated_instruction(struct kvm_vcpu *vcpu)
int r;
r = kvm_x86_ops->skip_emulated_instruction(vcpu);
- if (unlikely(r != EMULATE_DONE))
+ if (unlikely(!r))
return 0;
/*
@@ -6510,7 +6510,7 @@ int kvm_skip_emulated_instruction(struct kvm_vcpu *vcpu)
*/
if (unlikely(rflags & X86_EFLAGS_TF))
r = kvm_vcpu_do_singlestep(vcpu);
- return r == EMULATE_DONE;
+ return r;
}
EXPORT_SYMBOL_GPL(kvm_skip_emulated_instruction);
@@ -6529,7 +6529,7 @@ static bool kvm_vcpu_check_breakpoint(struct kvm_vcpu *vcpu, int *r)
kvm_run->debug.arch.pc = eip;
kvm_run->debug.arch.exception = DB_VECTOR;
kvm_run->exit_reason = KVM_EXIT_DEBUG;
- *r = EMULATE_USER_EXIT;
+ *r = 0;
return true;
}
}
@@ -6545,7 +6545,7 @@ static bool kvm_vcpu_check_breakpoint(struct kvm_vcpu *vcpu, int *r)
vcpu->arch.dr6 &= ~DR_TRAP_BITS;
vcpu->arch.dr6 |= dr6 | DR6_RTM;
kvm_queue_exception(vcpu, DB_VECTOR);
- *r = EMULATE_DONE;
+ *r = 1;
return true;
}
}
@@ -6632,11 +6632,11 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu,
if ((emulation_type & EMULTYPE_TRAP_UD) ||
(emulation_type & EMULTYPE_TRAP_UD_FORCED)) {
kvm_queue_exception(vcpu, UD_VECTOR);
- return EMULATE_DONE;
+ return 1;
}
if (reexecute_instruction(vcpu, cr2, write_fault_to_spt,
emulation_type))
- return EMULATE_DONE;
+ return 1;
if (ctxt->have_exception) {
/*
* #UD should result in just EMULATION_FAILED, and trap-like
@@ -6645,7 +6645,7 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu,
WARN_ON_ONCE(ctxt->exception.vector == UD_VECTOR ||
exception_type(ctxt->exception.vector) == EXCPT_TRAP);
inject_emulated_exception(vcpu);
- return EMULATE_DONE;
+ return 1;
}
return handle_emulation_failure(vcpu, emulation_type);
}
@@ -6654,7 +6654,7 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu,
if ((emulation_type & EMULTYPE_VMWARE_GP) &&
!is_vmware_backdoor_opcode(ctxt)) {
kvm_queue_exception_e(vcpu, GP_VECTOR, 0);
- return EMULATE_DONE;
+ return 1;
}
if (emulation_type & EMULTYPE_SKIP) {
@@ -6662,11 +6662,11 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu,
if (ctxt->eflags & X86_EFLAGS_RF)
kvm_set_rflags(vcpu, ctxt->eflags & ~X86_EFLAGS_RF);
kvm_x86_ops->set_interrupt_shadow(vcpu, 0);
- return EMULATE_DONE;
+ return 1;
}
if (retry_instruction(ctxt, cr2, emulation_type))
- return EMULATE_DONE;
+ return 1;
/* this is needed for vmware backdoor interface to work since it
changes registers values during IO operation */
@@ -6682,18 +6682,18 @@ restart:
r = x86_emulate_insn(ctxt);
if (r == EMULATION_INTERCEPTED)
- return EMULATE_DONE;
+ return 1;
if (r == EMULATION_FAILED) {
if (reexecute_instruction(vcpu, cr2, write_fault_to_spt,
emulation_type))
- return EMULATE_DONE;
+ return 1;
return handle_emulation_failure(vcpu, emulation_type);
}
if (ctxt->have_exception) {
- r = EMULATE_DONE;
+ r = 1;
if (inject_emulated_exception(vcpu))
return r;
} else if (vcpu->arch.pio.count) {
@@ -6704,18 +6704,18 @@ restart:
writeback = false;
vcpu->arch.complete_userspace_io = complete_emulated_pio;
}
- r = EMULATE_USER_EXIT;
+ r = 0;
} else if (vcpu->mmio_needed) {
++vcpu->stat.mmio_exits;
if (!vcpu->mmio_is_write)
writeback = false;
- r = EMULATE_USER_EXIT;
+ r = 0;
vcpu->arch.complete_userspace_io = complete_emulated_mmio;
} else if (r == EMULATION_RESTART)
goto restart;
else
- r = EMULATE_DONE;
+ r = 1;
if (writeback) {
unsigned long rflags = kvm_x86_ops->get_rflags(vcpu);
@@ -6724,7 +6724,7 @@ restart:
if (!ctxt->have_exception ||
exception_type(ctxt->exception.vector) == EXCPT_TRAP) {
kvm_rip_write(vcpu, ctxt->eip);
- if (r == EMULATE_DONE && ctxt->tf)
+ if (r && ctxt->tf)
r = kvm_vcpu_do_singlestep(vcpu);
__kvm_set_rflags(vcpu, ctxt->eflags);
}
@@ -8319,12 +8319,11 @@ static int vcpu_run(struct kvm_vcpu *vcpu)
static inline int complete_emulated_io(struct kvm_vcpu *vcpu)
{
int r;
+
vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
r = kvm_emulate_instruction(vcpu, EMULTYPE_NO_DECODE);
srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
- if (r != EMULATE_DONE)
- return 0;
- return 1;
+ return r;
}
static int complete_emulated_pio(struct kvm_vcpu *vcpu)
@@ -8696,13 +8695,13 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
vcpu->run->internal.ndata = 0;
- return EMULATE_USER_EXIT;
+ return 0;
}
kvm_rip_write(vcpu, ctxt->eip);
kvm_set_rflags(vcpu, ctxt->eflags);
kvm_make_request(KVM_REQ_EVENT, vcpu);
- return EMULATE_DONE;
+ return 1;
}
EXPORT_SYMBOL_GPL(kvm_task_switch);
generated by cgit v1.2.3 (git 2.39.0) at 2025-03-08 16:33:07 +0300