Commit 66386ade authored by Feng Wu's avatar Feng Wu Committed by Marcelo Tosatti
Browse files

KVM: Rename variable smep to cr4_smep 



Rename variable smep to cr4_smep, which can better reflect the
meaning of the variable.

Signed-off-by: default avatarFeng Wu <feng.wu@intel.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent de935ae1

arch/x86/kvm/mmu.c

+3 −3
Original line number Diff line number Diff line
@@ -3606,9 +3606,9 @@ void update_permission_bitmask(struct kvm_vcpu *vcpu, 
{

	unsigned bit, byte, pfec;

	u8 map;

	bool fault, x, w, u, wf, uf, ff, smapf, cr4_smap, smep, smap = 0;

	bool fault, x, w, u, wf, uf, ff, smapf, cr4_smap, cr4_smep, smap = 0;



	smep = kvm_read_cr4_bits(vcpu, X86_CR4_SMEP);

	cr4_smep = kvm_read_cr4_bits(vcpu, X86_CR4_SMEP);

	cr4_smap = kvm_read_cr4_bits(vcpu, X86_CR4_SMAP);

	for (byte = 0; byte < ARRAY_SIZE(mmu->permissions); ++byte) {

		pfec = byte << 1;
@@ -3633,7 +3633,7 @@ void update_permission_bitmask(struct kvm_vcpu *vcpu, 
				/* Allow supervisor writes if !cr0.wp */

				w |= !is_write_protection(vcpu) && !uf;

				/* Disallow supervisor fetches of user code if cr4.smep */

				x &= !(smep && u && !uf);

				x &= !(cr4_smep && u && !uf);



				/*

				 * SMAP:kernel-mode data accesses from user-mode