This adds _PAGE_PTE check and makes sure we validate the pte value returned via
find_kvm_host_pte.
NOTE: this also considers _PAGE_INVALID to the software valid bit.
Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.ibm.com>
---
arch/powerpc/include/asm/kvm_book3s_64.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h
b/arch/powerpc/include/asm/kvm_book3s_64.h
index 1ca1f6495012..c58e64a0a74f 100644
--- a/arch/powerpc/include/asm/kvm_book3s_64.h
+++ b/arch/powerpc/include/asm/kvm_book3s_64.h
@@ -435,7 +435,7 @@ static inline pte_t kvmppc_read_update_linux_pte(pte_t
*ptep, int writing)
continue;
}
/* If pte is not present return None */
- if (unlikely(!(pte_val(old_pte) & _PAGE_PRESENT)))
+ if (unlikely(!pte_present(old_pte)))
return __pte(0);
new_pte = pte_mkyoung(old_pte);
--
2.25.3
