diff options
| author | Oliver O'Halloran <oohall@gmail.com> | 2017-06-28 11:32:34 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-02 20:40:28 +1000 |
| commit | ebd31197931d75c837269f3fd3365b4cee358faf (patch) | |
| tree | 53525796d793b5cc488c21d5d1fca5cb739623eb /arch/powerpc/include/asm/book3s/64/radix.h | |
| parent | b584c2544041707ea041748dbfbb1081289c6cf5 (diff) | |
powerpc/mm: Add devmap support for ppc64
Add support for the devmap bit on PTEs and PMDs for PPC64 Book3S. This
is used to differentiate device backed memory from transparent huge
pages since they are handled in more or less the same manner by the core
mm code.
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/radix.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/radix.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index ac16d1943022..ba43754e96d2 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -252,7 +252,7 @@ static inline int radix__pgd_bad(pgd_t pgd) static inline int radix__pmd_trans_huge(pmd_t pmd) { - return !!(pmd_val(pmd) & _PAGE_PTE); + return (pmd_val(pmd) & (_PAGE_PTE | _PAGE_DEVMAP)) == _PAGE_PTE; } static inline pmd_t radix__pmd_mkhuge(pmd_t pmd) |