diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-12-14 07:37:53 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-01-18 03:58:50 +0300 |
| commit | 20717e1ff52672e31f9399c45d88936bbbc7e175 (patch) | |
| tree | 78f4f680a68ddddc4f99140d8c09b1a7b17a474d /arch/powerpc/include/asm/book3s/64 | |
| parent | ff8b85796dad5de869dc29903c95664fb444bbcc (diff) | |
| download | linux-20717e1ff52672e31f9399c45d88936bbbc7e175.tar.xz | |
powerpc/mm: Fix little-endian 4K hugetlb
When we switched to big endian page table, we never updated the hugepd
format such that it can work for both big endian and little endian
config. This patch series update hugepd format such that it is looked at
as __be64 value in big endian page table config.
This patch also switch hugepd_t.pd from signed long to unsigned long.
I did update the FSL hugepd_ok check to check for the top bit instead
of checking > 0.
Fixes: 5dc1ef858c12 ("powerpc/mm: Use big endian Linux page tables for book3s 64")
Cc: stable@vger.kernel.org # v4.7+
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash-4k.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h index 1c64bc6330bc..0c4e470571ca 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-4k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h @@ -36,12 +36,13 @@ #ifdef CONFIG_HUGETLB_PAGE static inline int hash__hugepd_ok(hugepd_t hpd) { + unsigned long hpdval = hpd_val(hpd); /* * if it is not a pte and have hugepd shift mask * set, then it is a hugepd directory pointer */ - if (!(hpd.pd & _PAGE_PTE) && - ((hpd.pd & HUGEPD_SHIFT_MASK) != 0)) + if (!(hpdval & _PAGE_PTE) && + ((hpdval & HUGEPD_SHIFT_MASK) != 0)) return true; return false; } |