On Sat, Mar 04, 2017 at 09:58:14PM -0700, Logan Gunthorpe wrote:
> So, I've found that my kernel config had the OPTIMIZE_FOR_SIZE selected
> instead of OPTIMIZE_FOR_PERFORMANCE. I'm not sure why that is but
> switching to the latter option fixes my problem. A memcpy call is used
> instead of the poor inline solution. (I'm not really sure how the inline
> solution even makes any sense as it almost certainly makes things larger
> in the grand scheme of things.)
Probably some gcc heuristics don't work as expected...
In any case, I have
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
here and it still generates REP; MOVSL in dmi_scan_machine().
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Regards/Gruss,
Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284
(AG Nürnberg)
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