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vmx: refine validity check for guest linear address

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The validity check for the guest line address is inefficient,
check the invalid value instead of enumerating the valid ones.

Signed-off-by: Liang Li <liang.z.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Liang Li 2016-08-18 15:49:19 +08:00 committed by Paolo Bonzini
parent 4174879b2e
commit 72e0ae58a0
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/vmx.c
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@ -6109,7 +6109,7 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu)
exit_qualification = vmcs_readl(EXIT_QUALIFICATION); exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
gla_validity = (exit_qualification >> 7) & 0x3; gla_validity = (exit_qualification >> 7) & 0x3;
if (gla_validity != 0x3 && gla_validity != 0x1 && gla_validity != 0) { if (gla_validity == 0x2) {
printk(KERN_ERR "EPT: Handling EPT violation failed!\n"); printk(KERN_ERR "EPT: Handling EPT violation failed!\n");
printk(KERN_ERR "EPT: GPA: 0x%lx, GVA: 0x%lx\n", printk(KERN_ERR "EPT: GPA: 0x%lx, GVA: 0x%lx\n",
(long unsigned int)vmcs_read64(GUEST_PHYSICAL_ADDRESS), (long unsigned int)vmcs_read64(GUEST_PHYSICAL_ADDRESS),