Raghu Krishnamurthy c0018913b4 T589: Fix insufficient ordering guarantees in bakery lock ... bakery_lock_get() uses DMB LD after lock acquisition and bakery_lock_release() uses DMB ST before releasing the lock. This is insufficient in both cases. With just DMB LD, stores in the critical section can be reordered before the DMB LD which could mean writes in the critical section completing before the lock has been acquired successfully. Similarly, with just DMB ST, a load in the critical section could be reordered after the the DMB ST. DMB is the least expensive barrier that can provide the required ordering. Signed-off-by: Raghu Krishnamurthy <raghu.ncstate@icloud.com> Change-Id: Ieb74cbf5b76b09e1789331b71f37f7c660221b0e		2020-01-27 09:31:31 -08:00
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bakery	T589: Fix insufficient ordering guarantees in bakery lock	2020-01-27 09:31:31 -08:00
exclusive	Fix the CAS spinlock implementation	2019-10-04 10:19:35 +02:00