| commit | ed2839166c21e001d15868f4d9591a21aaebd547 | |
| author | Richard Henderson <rth@twiddle.net> | |
| Fri, 2 Sep 2016 19:52:28 +0000 (2 12:52 -0700) | ||
| committer | Richard Henderson <rth@twiddle.net> | |
| Wed, 26 Oct 2016 15:29:02 +0000 (26 08:29 -0700) | ||
| tree | e63b55476274f12975030d67772d4a4db99c6f5e | treesnapshot (tar.gz zip) |
| parent | 6a73ecf5cfcd39b7afb5d6a24174730eac49d4b5 | commitdiff |
target-alpha: Emulate LL/SC using cmpxchg helpers
Emulating LL/SC with cmpxchg is not correct, since it can
suffer from the ABA problem. However, portable parallel
code is written assuming only cmpxchg which means that in
practice this is a viable alternative.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Emulating LL/SC with cmpxchg is not correct, since it can
suffer from the ABA problem. However, portable parallel
code is written assuming only cmpxchg which means that in
practice this is a viable alternative.
Signed-off-by: Richard Henderson <rth@twiddle.net>