Messages in this thread | | | Date | Thu, 25 Oct 2007 13:20:51 -0700 | From | Arjan van de Ven <> | Subject | Re: Possibility of adding -march=native to x86 |
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On Thu, 25 Oct 2007 22:20:31 +0200 Adrian Bunk <bunk@kernel.org> wrote:
> On Thu, Oct 25, 2007 at 09:12:45PM +0100, Michael Lothian wrote: > > > The MPENTIUM4 option does not only set -march=pentium4, it also > > > enables several other options in arch/i386/Kconfig.cpu resulting > > > in better performance. > > > > How about an autodetect to set the right options here too using > > cpuid? > > > > With a warning of course that the code produced will be specifically > > for the native cpu that it's compiled on. > > If you don't know or can figure out yourself the CPU you have, you'd > better not compile your own kernel... > ... or if there is more than just one CPU type, you pick generic.
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