#include #include #include "sig.h" void register_signal(int signal, void (*handler)(int)) { sigset_t block_mask; struct sigaction saction; sigfillset(&block_mask); saction.sa_handler = handler; saction.sa_mask = block_mask; saction.sa_flags = SA_RESTART; sigaction(signal, &saction, NULL); } void register_signal_f(int signal, void (*handler)(int), int flags) { sigset_t block_mask; struct sigaction saction; sigfillset(&block_mask); saction.sa_handler = handler; saction.sa_mask = block_mask; saction.sa_flags = flags; sigaction(signal, &saction, NULL); } e='net-next.git Git repository'/>
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authorJames Morse <james.morse@arm.com>2016-06-20 18:28:01 +0100
committerWill Deacon <will.deacon@arm.com>2016-07-07 15:55:37 +0100
commite19a6ee2460bdd0d0055a6029383422773f9999a (patch)
treef8e7898101568c82617d7afd66e712b9f0538a0e /Documentation
parent4c2e07c6a29e0129e975727b9f57eede813eea85 (diff)
arm64: kernel: Save and restore UAO and addr_limit on exception entry
If we take an exception while at EL1, the exception handler inherits the original context's addr_limit and PSTATE.UAO values. To be consistent always reset addr_limit and PSTATE.UAO on (re-)entry to EL1. This prevents accidental re-use of the original context's addr_limit. Based on a similar patch for arm from Russell King. Cc: <stable@vger.kernel.org> # 4.6- Acked-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'Documentation')