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Commit 72e0ae58 authored by Liang Li's avatar Liang Li Committed by Paolo Bonzini
Browse files

vmx: refine validity check for guest linear address 



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

Signed-off-by: default avatarLiang Li <liang.z.li@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 4174879b

arch/x86/kvm/vmx.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -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),