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| author | Laura Abbott <labbott@fedoraproject.org> | 2016-02-05 16:24:47 -0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-11-14 14:42:23 +0800 |
| commit | 7d13203b6442d6851b967f3d8a9889b08ddd6e00 (patch) | |
| tree | 0c5e9c254d62c3ade65e2480bf777a505c6e4d12 /net/ipv6/tcp_ipv6.c | |
| parent | e1e5e10153f6e6ecbe3e132c87ac55fbd8e892bf (diff) | |
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>
(cherry picked from commit 83863f25e4b8214e994ef8b5647aad614d74b45d)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
0 files changed, 0 insertions, 0 deletions