On Sun, 12 Aug 2007, Dave Jones wrote:
>
> This does make me wonder, why these weren't caught in -mm ?
I'm worried that -mm isn't getting a lot of exposure these days. People do
run it, but I wonder how many..
That said, a lot of machines won't ever use MMCFG (especially the old ones
- and most of the new ones would run x86-64), so that probably explains at
least that one.
But the x86-64 alternates code would hit anybody who had the "use rep movs
for best performance" code, and I'm surprised that one wasn't caught
earlier. X86_FEATURE_REP_GOOD is not uncommon (Core 2 has it). So I assume
that one wasn't really in -mm at all.
Linus
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