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

..

alpha

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

arc

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

arm

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

arm64

arm64: alternative: put secondary CPUs into polling loop during patch

2015-07-30 19:07:28 +01:00

avr32

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

blackfin

atomic: Replace atomic_{set,clear}_mask() usage

2015-07-27 14:06:24 +02:00

c6x

mm: clean up per architecture MM hook header files

2015-07-17 16:39:53 -07:00

cris

mm: clean up per architecture MM hook header files

2015-07-17 16:39:53 -07:00

frv

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

h8300

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

hexagon

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

ia64

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

m32r

atomic: Replace atomic_{set,clear}_mask() usage

2015-07-27 14:06:24 +02:00

m68k

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

metag

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

microblaze

mm: clean up per architecture MM hook header files

2015-07-17 16:39:53 -07:00

mips

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

mn10300

atomic: Replace atomic_{set,clear}_mask() usage

2015-07-27 14:06:24 +02:00

nios2

mm: clean up per architecture MM hook header files

2015-07-17 16:39:53 -07:00

openrisc

mm: clean up per architecture MM hook header files

2015-07-17 16:39:53 -07:00

parisc

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

powerpc

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

s390

atomic: Replace atomic_{set,clear}_mask() usage

2015-07-27 14:06:24 +02:00

score

mm: clean up per architecture MM hook header files

2015-07-17 16:39:53 -07:00

sh

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

sparc

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

tile

atomic: Provide atomic_{or,xor,and}

2015-07-27 14:06:24 +02:00

um

mm: clean up per architecture MM hook header files

2015-07-17 16:39:53 -07:00

unicore32

mm: clean up per architecture MM hook header files

2015-07-17 16:39:53 -07:00

x86

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

xtensa

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27 14:06:24 +02:00

.gitignore

…

Kconfig

x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT and use it on x86

2015-07-18 03:42:51 +02:00