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24-Apr-2014 |
Rabin Vincent <rabin@rab.in> |
UPSTREAM: arm: use fixmap for text patching when text is RO Use fixmaps for text patching when the kernel text is read-only, inspired by x86. This makes jump labels and kprobes work with the currently available CONFIG_DEBUG_SET_MODULE_RONX and the upcoming CONFIG_DEBUG_RODATA options. Signed-off-by: Rabin Vincent <rabin@rab.in> [kees: fixed up for merge with "arm: use generic fixmap.h"] [kees: added parse acquire/release annotations to pass C=1 builds] [kees: always use stop_machine to keep TLB flushing local] Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Nicolas Pitre <nico@linaro.org> (cherry picked from commit ab0615e2d6fb074764a3e4d05f1326fa2fdb4627) Signed-off-by: Kees Cook <keescook@google.com> Change-Id: I2272667937c38a5a2b08a21f0afb8d07e7f3326e
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