summaryrefslogtreecommitdiffstats
path: root/lib/842
diff options
context:
space:
mode:
authorLaura Abbott <labbott@fedoraproject.org>2016-02-05 16:24:47 -0800
committerCatalin Marinas <catalin.marinas@arm.com>2016-02-16 15:40:30 +0000
commit83863f25e4b8214e994ef8b5647aad614d74b45d (patch)
treedef928e193b847e4035a6d895efafc9f9b881896 /lib/842
parent132233a759580f5ce9b1bfaac9073e47d03c460d (diff)
downloadop-kernel-dev-83863f25e4b8214e994ef8b5647aad614d74b45d.zip
op-kernel-dev-83863f25e4b8214e994ef8b5647aad614d74b45d.tar.gz
arm64: Add support for ARCH_SUPPORTS_DEBUG_PAGEALLOC
ARCH_SUPPORTS_DEBUG_PAGEALLOC provides a hook to map and unmap pages for debugging purposes. This requires memory be mapped with PAGE_SIZE mappings since breaking down larger mappings at runtime will lead to TLB conflicts. Check if debug_pagealloc is enabled at runtime and if so, map everyting with PAGE_SIZE pages. Implement the functions to actually map/unmap the pages at runtime. Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Laura Abbott <labbott@fedoraproject.org> [catalin.marinas@arm.com: static annotation block_mappings_allowed() and #ifdef] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'lib/842')
0 files changed, 0 insertions, 0 deletions
OpenPOWER on IntegriCloud