* MMU support
*
* Copyright (C) 2006 Qumranet, Inc.
- * Copyright 2010 Red Hat, Inc. and/or its affilates.
+ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* Authors:
* Yaniv Kamay <yaniv@qumranet.com>
access = (gpte & (PT_WRITABLE_MASK | PT_USER_MASK)) | ACC_EXEC_MASK;
#if PTTYPE == 64
- if (is_nx(vcpu))
+ if (vcpu->arch.mmu.nx)
access &= ~(gpte >> PT64_NX_SHIFT);
#endif
return access;
*/
static int FNAME(walk_addr_generic)(struct guest_walker *walker,
struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
- gva_t addr, int write_fault,
- int user_fault, int fetch_fault)
+ gva_t addr, u32 access)
{
pt_element_t pte;
gfn_t table_gfn;
unsigned index, pt_access, uninitialized_var(pte_access);
gpa_t pte_gpa;
bool eperm, present, rsvd_fault;
- int offset;
- u32 access = 0;
+ int offset, write_fault, user_fault, fetch_fault;
+
+ write_fault = access & PFERR_WRITE_MASK;
+ user_fault = access & PFERR_USER_MASK;
+ fetch_fault = access & PFERR_FETCH_MASK;
trace_kvm_mmu_pagetable_walk(addr, write_fault, user_fault,
fetch_fault);
int lvl = walker->level;
gpa_t real_gpa;
gfn_t gfn;
+ u32 ac;
gfn = gpte_to_gfn_lvl(pte, lvl);
gfn += (addr & PT_LVL_OFFSET_MASK(lvl)) >> PAGE_SHIFT;
is_cpuid_PSE36())
gfn += pse36_gfn_delta(pte);
- access |= write_fault ? PFERR_WRITE_MASK : 0;
- access |= fetch_fault ? PFERR_FETCH_MASK : 0;
- access |= user_fault ? PFERR_USER_MASK : 0;
+ ac = write_fault | fetch_fault | user_fault;
real_gpa = mmu->translate_gpa(vcpu, gfn_to_gpa(gfn),
- access);
+ ac);
if (real_gpa == UNMAPPED_GVA)
return 0;
walker->error_code = 0;
if (present)
walker->error_code |= PFERR_PRESENT_MASK;
- if (write_fault)
- walker->error_code |= PFERR_WRITE_MASK;
- if (user_fault)
- walker->error_code |= PFERR_USER_MASK;
- if (fetch_fault && is_nx(vcpu))
+
+ walker->error_code |= write_fault | user_fault;
+
+ if (fetch_fault && mmu->nx)
walker->error_code |= PFERR_FETCH_MASK;
if (rsvd_fault)
walker->error_code |= PFERR_RSVD_MASK;
}
static int FNAME(walk_addr)(struct guest_walker *walker,
- struct kvm_vcpu *vcpu, gva_t addr,
- int write_fault, int user_fault, int fetch_fault)
+ struct kvm_vcpu *vcpu, gva_t addr, u32 access)
{
return FNAME(walk_addr_generic)(walker, vcpu, &vcpu->arch.mmu, addr,
- write_fault, user_fault, fetch_fault);
+ access);
}
static int FNAME(walk_addr_nested)(struct guest_walker *walker,
struct kvm_vcpu *vcpu, gva_t addr,
- int write_fault, int user_fault,
- int fetch_fault)
+ u32 access)
{
return FNAME(walk_addr_generic)(walker, vcpu, &vcpu->arch.nested_mmu,
- addr, write_fault, user_fault,
- fetch_fault);
+ addr, access);
}
static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
{
int write_fault = error_code & PFERR_WRITE_MASK;
int user_fault = error_code & PFERR_USER_MASK;
- int fetch_fault = error_code & PFERR_FETCH_MASK;
struct guest_walker walker;
u64 *sptep;
int write_pt = 0;
/*
* Look up the guest pte for the faulting address.
*/
- r = FNAME(walk_addr)(&walker, vcpu, addr, write_fault, user_fault,
- fetch_fault);
+ r = FNAME(walk_addr)(&walker, vcpu, addr, error_code);
/*
* The page is not mapped by the guest. Let the guest handle it.
gpa_t gpa = UNMAPPED_GVA;
int r;
- r = FNAME(walk_addr)(&walker, vcpu, vaddr,
- !!(access & PFERR_WRITE_MASK),
- !!(access & PFERR_USER_MASK),
- !!(access & PFERR_FETCH_MASK));
+ r = FNAME(walk_addr)(&walker, vcpu, vaddr, access);
if (r) {
gpa = gfn_to_gpa(walker.gfn);
gpa_t gpa = UNMAPPED_GVA;
int r;
- r = FNAME(walk_addr_nested)(&walker, vcpu, vaddr,
- access & PFERR_WRITE_MASK,
- access & PFERR_USER_MASK,
- access & PFERR_FETCH_MASK);
+ r = FNAME(walk_addr_nested)(&walker, vcpu, vaddr, access);
if (r) {
gpa = gfn_to_gpa(walker.gfn);