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hv:fix return value violation in vmexit handler

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Check return value for the called functions in vmexit handler

Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Mingqiang Chi
2018-07-10 13:33:33 +08:00
committed by lijinxia
parent 2686fe76bc
commit f01e6efdf5
4 changed files with 24 additions and 19 deletions
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7
hypervisor/arch/x86/vmexit.c
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@@ -236,6 +236,7 @@ int cpuid_vmexit_handler(struct vcpu *vcpu)
int cr_access_vmexit_handler(struct vcpu *vcpu)
{
int err = 0;
uint64_t *regptr;
struct run_context *cur_context =
&vcpu->arch_vcpu.contexts[vcpu->arch_vcpu.cur_context];
@@ -267,11 +268,11 @@ int cr_access_vmexit_handler(struct vcpu *vcpu)
VM_EXIT_CR_ACCESS_CR_NUM(vcpu->arch_vcpu.exit_qualification)) {
case 0x00U:
/* mov to cr0 */
vmx_write_cr0(vcpu, *regptr);
err = vmx_write_cr0(vcpu, *regptr);
break;
case 0x04U:
/* mov to cr4 */
vmx_write_cr4(vcpu, *regptr);
err = vmx_write_cr4(vcpu, *regptr);
break;
case 0x08U:
/* mov to cr8 */
@@ -292,7 +293,7 @@ int cr_access_vmexit_handler(struct vcpu *vcpu)
VM_EXIT_CR_ACCESS_CR_NUM
(vcpu->arch_vcpu.exit_qualification));
return 0;
return err;
}
/*