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-rw-r--r--drivers/kvm/mmu.c7
-rw-r--r--drivers/kvm/paging_tmpl.h5
2 files changed, 9 insertions, 3 deletions
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index 346aa65a08d5..a9fed594ac58 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -218,6 +218,13 @@ static int is_rmap_pte(u64 pte)
218 && pte != shadow_notrap_nonpresent_pte; 218 && pte != shadow_notrap_nonpresent_pte;
219} 219}
220 220
221static gfn_t pse36_gfn_delta(u32 gpte)
222{
223 int shift = 32 - PT32_DIR_PSE36_SHIFT - PAGE_SHIFT;
224
225 return (gpte & PT32_DIR_PSE36_MASK) << shift;
226}
227
221static void set_shadow_pte(u64 *sptep, u64 spte) 228static void set_shadow_pte(u64 *sptep, u64 spte)
222{ 229{
223#ifdef CONFIG_X86_64 230#ifdef CONFIG_X86_64
diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
index 6f79ae87d0cf..dceb4b9137a4 100644
--- a/drivers/kvm/paging_tmpl.h
+++ b/drivers/kvm/paging_tmpl.h
@@ -149,6 +149,8 @@ static int FNAME(walk_addr)(struct guest_walker *walker,
149 && (PTTYPE == 64 || is_pse(vcpu))) { 149 && (PTTYPE == 64 || is_pse(vcpu))) {
150 walker->gfn = gpte_to_gfn_pde(pte); 150 walker->gfn = gpte_to_gfn_pde(pte);
151 walker->gfn += PT_INDEX(addr, PT_PAGE_TABLE_LEVEL); 151 walker->gfn += PT_INDEX(addr, PT_PAGE_TABLE_LEVEL);
152 if (PTTYPE == 32 && is_cpuid_PSE36())
153 walker->gfn += pse36_gfn_delta(pte);
152 break; 154 break;
153 } 155 }
154 156
@@ -320,9 +322,6 @@ static void FNAME(set_pde)(struct kvm_vcpu *vcpu, pt_element_t gpde,
320 322
321 access_bits &= gpde; 323 access_bits &= gpde;
322 gaddr = (gpa_t)gfn << PAGE_SHIFT; 324 gaddr = (gpa_t)gfn << PAGE_SHIFT;
323 if (PTTYPE == 32 && is_cpuid_PSE36())
324 gaddr |= (gpde & PT32_DIR_PSE36_MASK) <<
325 (32 - PT32_DIR_PSE36_SHIFT);
326 FNAME(set_pte_common)(vcpu, shadow_pte, gaddr, 325 FNAME(set_pte_common)(vcpu, shadow_pte, gaddr,
327 gpde, access_bits, user_fault, write_fault, 326 gpde, access_bits, user_fault, write_fault,
328 ptwrite, walker, gfn); 327 ptwrite, walker, gfn);