diff options
author | Jun Nie <jun.nie@linaro.org> | 2018-10-04 12:25:12 +0800 |
---|---|---|
committer | Jun Nie <jun.nie@linaro.org> | 2018-10-04 12:25:12 +0800 |
commit | a317857ced07da6708d1664e406f02470f96e520 (patch) | |
tree | cfd22a40644dddfa904bd469cbeb68c70f198d83 | |
parent | 77c54d982a0a4352091a6134f9cf71c091b1cb53 (diff) |
Aarch32: Add data sync for spin lock for ARMv7
Add data sync for spin lock because stl instruction on ARMv8
makes sure that data is sync while str instruction does not
on ARMv7.
Signed-off-by: Jun Nie <jun.nie@linaro.org>
-rw-r--r-- | lib/locks/aarch32/spinlock.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/locks/aarch32/spinlock.S b/lib/locks/aarch32/spinlock.S index bcbfb3b..4c72ffb 100644 --- a/lib/locks/aarch32/spinlock.S +++ b/lib/locks/aarch32/spinlock.S @@ -59,7 +59,9 @@ func spin_unlock #if ARM_ARCH_MAJOR == 8 stl r1, [r0] #else + dmb str r1, [r0] + dsb #endif bx lr endfunc spin_unlock |