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vmexit: refine vmexit loop

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- move vmexit handling into vmexit_handler
- add error handling, failure will inject #GP

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jason Chen CJ
2018-05-22 14:33:13 +08:00
committed by lijinxia
parent 2ff7bf826e
commit 67dfec8799
3 changed files with 34 additions and 21 deletions
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23
hypervisor/arch/x86/vmexit.c
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@@ -156,10 +156,16 @@ static const struct vm_exit_dispatch dispatch_table[] = {
.need_exit_qualification = 1}
};
struct vm_exit_dispatch *vmexit_handler(struct vcpu *vcpu)
int vmexit_handler(struct vcpu *vcpu)
{
struct vm_exit_dispatch *dispatch = HV_NULL;
uint16_t basic_exit_reason;
int ret;
if ((int)get_cpu_id() != vcpu->pcpu_id) {
pr_fatal("vcpu is not running on its pcpu!");
return -EINVAL;
}
/* Obtain interrupt info */
vcpu->arch_vcpu.idt_vectoring_info =
@@ -190,8 +196,19 @@ struct vm_exit_dispatch *vmexit_handler(struct vcpu *vcpu)
/* Update current vcpu in VM that caused vm exit */
vcpu->vm->current_vcpu = vcpu;
/* Return pointer to exit dispatch entry */
return dispatch;
/* exit dispatch handling */
if (basic_exit_reason == VMX_EXIT_REASON_EXTERNAL_INTERRUPT) {
/* Handling external_interrupt
* should disable intr
*/
ret = dispatch->handler(vcpu);
} else {
CPU_IRQ_ENABLE();
ret = dispatch->handler(vcpu);
CPU_IRQ_DISABLE();
}
return ret;
}
static int unhandled_vmexit_handler(__unused struct vcpu *vcpu)