On Wed, 2019-07-31 at 12:52 -0500, Gustavo A. R. Silva wrote:
> This is insufficient. The speculation windows are large:
> 
> "Speculative  execution  on  modern  CPUs  can  run  several
> hundred  instructions  ahead." [1]
> 
> [1] https://spectreattack.com/spectre.pdf

Thanks, I'll take a look at that.  That issue aside, returning without
wasting time on two mutexes is still better IMO, so I like my patch more
than the proposed one.  Tony, would you like to resubmit?

-- 
Doug Ledford <dledford@redhat.com>
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