Will Deacon c1d7cd228b arm64: spinlock: fix ll/sc unlock on big-endian systems ...

When unlocking a spinlock, we perform a read-modify-write on the owner
ticket in order to increment it and store it back with release
semantics.

In the LL/SC case, we load the 16-bit ticket using a 32-bit load and
therefore store back the wrong halfword on a big-endian system,
corrupting the lock after the first unlock and killing the system dead.

This patch fixes the unlock code to use 16-bit accessors consistently.

Signed-off-by: Will Deacon <will.deacon@arm.com>

2015-07-28 14:48:00 +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: spinlock: fix ll/sc unlock on big-endian systems

2015-07-28 14:48:00 +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