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Re: Linux kernel patch
- To: meissner at cygnus dot com, rth at cygnus dot com
- Subject: Re: Linux kernel patch
- From: meissner at cygnus dot com
- Date: Wed, 26 Nov 1997 15:04:16 -0500 (EST)
- Cc: egcs at cygnus dot com
| On Wed, Nov 26, 1997 at 12:18:54PM -0500, Michael Meissner wrote:
| > + Compiler supports -mcpu=pentiumpro and -march=pentiumpro
| > + CONFIG_GCC_PENTIUMPRO
| > + This enables support to use the -mcpu=pentiumpro and -march=pentiumpro
| > + switches that are available on newer GCC compilers. If you use this
| > + switch, then your kernel will not run on a Pentium, 486, or 386
| > + processor.
|
| Better to simply have the makefile detect if these options are
| available. It is already the case that if you configure for 586
| that you cannot run the kernel on a 386.
No, you don't want to do that implicitly, since I just found out that my kernel
hung after about 10 minutes when compiled with -march=pentiumpro :-(. It seems
to work fine, if I don't enable conditional moves.