Michael S. Tsirkin wrote:
Can they be moved to before the wmb? I think not.I don't see a specific race -- I'm just not totally comfortable yet, even with that fixed. The issue is not necessarily reads being delayed, since both an out-of-order CPU and a compiler may move reads much _earlier_ than they appear in the code (for example a read may be speculatively executed because of branch prediction for a test in an if statement).
- R.
Given that there's some concern here regarding races, what sort of performance improvement do we see with this change?
- Sean _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general
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