Will Deacon ef5e724b25 arm64: alternative: put secondary CPUs into polling loop during patch ... When patching the kernel text with alternatives, we may end up patching parts of the stop_machine state machine (e.g. atomic_dec_and_test in ack_state) and consequently corrupt the instruction stream of any secondary CPUs. This patch passes the cpu_online_mask to stop_machine, forcing all of the CPUs into our own callback which can place the secondary cores into a dumb (but safe!) polling loop whilst the patching is carried out. Signed-off-by: Will Deacon <will.deacon@arm.com>		2015-07-30 19:07:28 +01:00
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asm	arm64: alternative: put secondary CPUs into polling loop during patch	2015-07-30 19:07:28 +01:00
uapi/asm	arm64: elf: advertise 8.1 atomic instructions as new hwcap	2015-07-27 14:34:39 +01:00