diff options
| author |   Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-12-14 10:07:53 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-01-18 11:58:50 +1100 |
| commit | 20717e1ff52672e31f9399c45d88936bbbc7e175 (patch) | |
| tree | 78f4f680a68ddddc4f99140d8c09b1a7b17a474d /arch/powerpc/include/asm/pgtable-types.h | |
| parent | powerpc/mm/hugetlb: Don't panic when we don't find the default huge page size (diff) | |
| download | linux-dev-20717e1ff52672e31f9399c45d88936bbbc7e175.tar.xz linux-dev-20717e1ff52672e31f9399c45d88936bbbc7e175.zip | |
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/pgtable-types.h')
| -rw-r--r-- | arch/powerpc/include/asm/pgtable-types.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pgtable-types.h b/arch/powerpc/include/asm/pgtable-types.h index e7f4f3e0fcde..8bd3b13fe2fb 100644 --- a/arch/powerpc/include/asm/pgtable-types.h +++ b/arch/powerpc/include/asm/pgtable-types.h @@ -66,4 +66,11 @@ static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) } #endif +typedef struct { unsigned long pd; } hugepd_t; +#define __hugepd(x) ((hugepd_t) { (x) }) +static inline unsigned long hpd_val(hugepd_t x) +{ + return x.pd; +} + #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */ |