KVM: MMU: Remove walker argument to set_pte()

Unused.
Signed-off-by: Avi Kivity <avi@qumranet.com>

drivers/kvm/paging_tmpl.h

@@ -238,8 +238,7 @@ err:
 static void FNAME(set_pte)(struct kvm_vcpu *vcpu, u64 *shadow_pte,
 			   unsigned pt_access, unsigned pte_access,
 			   int user_fault, int write_fault, int dirty,
-			   int *ptwrite, struct guest_walker *walker,
-			   gfn_t gfn)
+			   int *ptwrite, gfn_t gfn)
 {
 	u64 spte;
 	int was_rmapped = is_rmap_pte(*shadow_pte);
@@ -337,7 +336,7 @@ static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *page,
 	pgprintk("%s: gpte %llx spte %p\n", __FUNCTION__, (u64)gpte, spte);
 	pte_access = page->role.access & FNAME(gpte_access)(vcpu, gpte);
 	FNAME(set_pte)(vcpu, spte, page->role.access, pte_access, 0, 0,
-		       gpte & PT_DIRTY_MASK, NULL, NULL, gpte_to_gfn(gpte));
+		       gpte & PT_DIRTY_MASK, NULL, gpte_to_gfn(gpte));
 }
 
 /*
@@ -402,7 +401,7 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
 
 	FNAME(set_pte)(vcpu, shadow_ent, access, walker->pte_access & access,
 		       user_fault, write_fault, walker->pte & PT_DIRTY_MASK,
-		       ptwrite, walker, walker->gfn);
+		       ptwrite, walker->gfn);
 
 	return shadow_ent;
 }