Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

[linux.git] / arch / arm / kvm / mmu.c

diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 6984342da13d09fd0194563f4b598cfb913ec6c1..7dace909d5cf158c9f7771da8ef7c951ee2dea1c 100644 (file)
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -98,6 +98,11 @@ static void kvm_flush_dcache_pud(pud_t pud)
        __kvm_flush_dcache_pud(pud);
 }
 
+static bool kvm_is_device_pfn(unsigned long pfn)
+{
+       return !pfn_valid(pfn);
+}
+
 /**
  * stage2_dissolve_pmd() - clear and flush huge PMD entry
  * @kvm:       pointer to kvm structure.
@@ -213,7 +218,7 @@ static void unmap_ptes(struct kvm *kvm, pmd_t *pmd,
                        kvm_tlb_flush_vmid_ipa(kvm, addr);
 
                        /* No need to invalidate the cache for device mappings */
-                       if ((pte_val(old_pte) & PAGE_S2_DEVICE) != PAGE_S2_DEVICE)
+                       if (!kvm_is_device_pfn(__phys_to_pfn(addr)))
                                kvm_flush_dcache_pte(old_pte);
 
                        put_page(virt_to_page(pte));
@@ -305,8 +310,7 @@ static void stage2_flush_ptes(struct kvm *kvm, pmd_t *pmd,
 
        pte = pte_offset_kernel(pmd, addr);
        do {
-               if (!pte_none(*pte) &&
-                   (pte_val(*pte) & PAGE_S2_DEVICE) != PAGE_S2_DEVICE)
+               if (!pte_none(*pte) && !kvm_is_device_pfn(__phys_to_pfn(addr)))
                        kvm_flush_dcache_pte(*pte);
        } while (pte++, addr += PAGE_SIZE, addr != end);
 }
@@ -1037,11 +1041,6 @@ static bool kvm_is_write_fault(struct kvm_vcpu *vcpu)
        return kvm_vcpu_dabt_iswrite(vcpu);
 }
 
-static bool kvm_is_device_pfn(unsigned long pfn)
-{
-       return !pfn_valid(pfn);
-}
-
 /**
  * stage2_wp_ptes - write protect PMD range
  * @pmd:       pointer to pmd entry