diff options
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 6bd70206c561..258e4591e1ca 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -123,6 +123,7 @@ static int FNAME(walk_addr)(struct guest_walker *walker, gfn_t table_gfn; unsigned index, pt_access, pte_access; gpa_t pte_gpa; + int rsvd_fault = 0; pgprintk("%s: addr %lx\n", __func__, addr); walk: @@ -157,6 +158,10 @@ walk: if (!is_present_pte(pte)) goto not_present; + rsvd_fault = is_rsvd_bits_set(vcpu, pte, walker->level); + if (rsvd_fault) + goto access_error; + if (write_fault && !is_writeble_pte(pte)) if (user_fault || is_write_protection(vcpu)) goto access_error; @@ -209,7 +214,6 @@ walk: if (ret) goto walk; pte |= PT_DIRTY_MASK; - kvm_mmu_pte_write(vcpu, pte_gpa, (u8 *)&pte, sizeof(pte), 0); walker->ptes[walker->level - 1] = pte; } @@ -233,6 +237,8 @@ err: walker->error_code |= PFERR_USER_MASK; if (fetch_fault) walker->error_code |= PFERR_FETCH_MASK; + if (rsvd_fault) + walker->error_code |= PFERR_RSVD_MASK; return 0; } @@ -262,8 +268,7 @@ static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *page, kvm_get_pfn(pfn); mmu_set_spte(vcpu, spte, page->role.access, pte_access, 0, 0, gpte & PT_DIRTY_MASK, NULL, largepage, - gpte & PT_GLOBAL_MASK, gpte_to_gfn(gpte), - pfn, true); + gpte_to_gfn(gpte), pfn, true); } /* @@ -297,7 +302,6 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, user_fault, write_fault, gw->ptes[gw->level-1] & PT_DIRTY_MASK, ptwrite, largepage, - gw->ptes[gw->level-1] & PT_GLOBAL_MASK, gw->gfn, pfn, false); break; } @@ -380,7 +384,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, return r; /* - * Look up the shadow pte for the faulting address. + * Look up the guest pte for the faulting address. */ r = FNAME(walk_addr)(&walker, vcpu, addr, write_fault, user_fault, fetch_fault); @@ -586,7 +590,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp) nr_present++; pte_access = sp->role.access & FNAME(gpte_access)(vcpu, gpte); set_spte(vcpu, &sp->spt[i], pte_access, 0, 0, - is_dirty_pte(gpte), 0, gpte & PT_GLOBAL_MASK, gfn, + is_dirty_pte(gpte), 0, gfn, spte_to_pfn(sp->spt[i]), true, false); } |