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correct idt_vectoring_info handling

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filter out HW exception and NMI from idt_vectoring_info first:
- queue HW exception through vcpu_queue_exception
- make NMI request through vcpu_make_request
this is a complement patch for previous commit "exception: refine exception
injection path", here take care un-injected vectors for types HW exception &
NMI, the previous commit take care SW exception & external interrupt.

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Tian, Kevin <kevin.tian@intel.com>
This commit is contained in:
Jason Chen CJ 2018-05-28 13:50:02 +08:00 committed by lijinxia
parent 7718338008
commit 9a604ed00e
1 changed files with 17 additions and 0 deletions
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17
hypervisor/arch/x86/vmexit.c
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@ -166,6 +166,23 @@ int vmexit_handler(struct vcpu *vcpu)
/* Obtain interrupt info */
vcpu->arch_vcpu.idt_vectoring_info =
exec_vmread(VMX_IDT_VEC_INFO_FIELD);
/* Filter out HW exception & NMI */
if (vcpu->arch_vcpu.idt_vectoring_info & VMX_INT_INFO_VALID) {
uint32_t vector_info = vcpu->arch_vcpu.idt_vectoring_info;
uint32_t vector = vector_info & 0xff;
uint32_t type = (vector_info & VMX_INT_TYPE_MASK) >> 8;
uint32_t err_code = 0;
if (type == VMX_INT_TYPE_HW_EXP) {
if (vector_info & VMX_INT_INFO_ERR_CODE_VALID)
err_code = exec_vmread(VMX_IDT_VEC_ERROR_CODE);
vcpu_queue_exception(vcpu, vector, err_code);
vcpu->arch_vcpu.idt_vectoring_info = 0;
} else if (type == VMX_INT_TYPE_NMI) {
vcpu_make_request(vcpu, ACRN_REQUEST_NMI);
vcpu->arch_vcpu.idt_vectoring_info = 0;
}
}
/* Calculate basic exit reason (low 16-bits) */
basic_exit_reason = vcpu->arch_vcpu.exit_reason & 0xFFFF;