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Re: Memory barrier problem in InnoDB/XtraDB mutex implementation causing hangs


Kristian Nielsen <knielsen@xxxxxxxxxxxxxxx> writes:

> MARK CALLAGHAN <mdcallag@xxxxxxxxx> writes:
>> Did this ever get resolved? I enjoyed reading this, you did a nice job
>> explaining the problem.
> It was resolved for x86 in the sense that the code was reverted to the old
> behaviour. The code is semantically incorrect (uses the wrong barriers), but
> it happens to generate the correct assembler code on x86 due to its rather
> strong memory ordering.
> It is probably still incorrect for some other architectures (eg. multi-core
> ARM).

What about POWER? It's officially supported by Maria now :)

Stewart Smith

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