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| author | Stefan Agner <stefan@agner.ch> | 2016-09-07 23:56:09 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2016-09-12 14:12:30 +0300 |
| commit | 6b3142b2b852cd5e3216d1aa800a0a49377e6e1c (patch) | |
| tree | d3a45c29f7c5be1a0d0d382c5a30acf999417b82 /arch/arm/mm/mmu.c | |
| parent | 1feafd64cbc31b75b7b08ab3ca0305311c3f6246 (diff) | |
| download | linux-6b3142b2b852cd5e3216d1aa800a0a49377e6e1c.tar.xz | |
ARM: 8612/1: LPAE: initialize cache policy correctly
The cachepolicy variable gets initialized using a masked pmd
value. So far, the pmd has been masked with flags valid for the
2-page table format, but the 3-page table format requires a
different mask. On LPAE, this lead to a wrong assumption of what
initial cache policy has been used. Later a check forces the
cache policy to writealloc and prints the following warning:
Forcing write-allocate cache policy for SMP
This patch introduces a new definition PMD_SECT_CACHE_MASK for
both page table formats which masks in all cache flags in both
cases.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 6344913f0804..30fe03f95c85 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -137,7 +137,7 @@ void __init init_default_cache_policy(unsigned long pmd) initial_pmd_value = pmd; - pmd &= PMD_SECT_TEX(1) | PMD_SECT_BUFFERABLE | PMD_SECT_CACHEABLE; + pmd &= PMD_SECT_CACHE_MASK; for (i = 0; i < ARRAY_SIZE(cache_policies); i++) if (cache_policies[i].pmd == pmd) { |