Am 2011-11-18 01:04, schrieb Neil Bothwick: > On Thu, 17 Nov 2011 23:13:31 +0100, Stefan G. Weichinger wrote: > >> Right now I have everything built with rather CPU-specific >> CFLAGS. >> >> Specific L1/L2-cache-sizes and stuff, set after doing something >> like "gcc -Q --help=target -march=native" .... (gentoo wiki). >> >> I wonder if this C2D-E6600-specific stuff would boot on the >> i7-2600k? Yeah, I could just try it. >> >> But maybe I should do something to prepare that migration? > > I did a new installation as the old one had started life on an > Athlon64 about 8 years ago and then migrated to the C2D. But it > will probably work as long as you kernel included support for both > types of hardware. > > If you're feeling adventurous, GCC 4.6, currently masked for > testing, has specific -march options for the i7 and Sandybridge i7, > according to the Gentoo Wiki CFLAGS page. > > Using 4.5.3 and -march=native, I had a couple of showstopping > build failures, that were fixed by switching to -march=core2 > -mtune=generic.
Thanks a lot. Will try. hardware order planned for next week maybe.
