diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-05-05 10:17:26 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-05 14:20:16 +0300 |
| commit | 0e11df9649ac4251c1bc5f27b7d89636d9270a91 (patch) | |
| tree | ff9dcd216973b9e95419951d87ba377ff784ff30 /arch/powerpc/include/asm/kvm_book3s_64.h | |
| parent | 9fd4236faa243f6660812b809bf2fb91d19c61b6 (diff) | |
| download | linux-0e11df9649ac4251c1bc5f27b7d89636d9270a91.tar.xz | |
powerpc/kvm/book3s: Use pte_present instead of opencoding _PAGE_PRESENT check
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.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200505071729.54912-20-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s_64.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_64.h | 2 |
1 files changed, 1 insertions, 1 deletions
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); |