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authorMark Rutland <mark.rutland@arm.com>2014-11-19 20:44:12 +0300
committerWill Deacon <will.deacon@arm.com>2014-11-20 15:05:18 +0300
commit15670ef1eac9817cf48da12c885aabcdd88e9add (patch)
tree27ebaa960609279a5ff7fa66a86f84b6b3ce52b2 /drivers/firmware/dcdbas.c
parentd6c763afab142a85e4770b4bc2a5f40f256d5c5d (diff)
downloadlinux-15670ef1eac9817cf48da12c885aabcdd88e9add.tar.xz
arm64: pgalloc: consistently use PGALLOC_GFP
We currently allocate different levels of page tables with a variety of differing flags, and the PGALLOC_GFP flags, intended for use when allocating any level of page table, are only used for ptes in pte_alloc_one. On x86, PGALLOC_GFP is used for all page table allocations. Currently the major differences are: * __GFP_NOTRACK -- Needed to ensure page tables are always accessible in the presence of kmemcheck to prevent recursive faults. Currently kmemcheck cannot be selected for arm64. * __GFP_REPEAT -- Causes the allocator to try to reclaim pages and retry upon a failure to allocate. * __GFP_ZERO -- Sometimes passed explicitly, sometimes zalloc variants are used. While we've no encountered issues so far, it would be preferable to be consistent. This patch ensures all levels of table are allocated in the same manner, with PGALLOC_GFP. Cc: Steve Capper <steve.capper@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/firmware/dcdbas.c')
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