Messages in this thread | | | Date | Thu, 17 May 2007 11:02:05 -0400 | From | Dave Jones <> | Subject | Re: 2.6.22-rc1 does not boot on VIA C3_2 cause of X86_CMPXCHG64 |
| |
On Thu, May 17, 2007 at 01:51:34PM +0200, Andi Kleen wrote:
> > The C3s all have cx8, but it needs to be enabled in an MSR first. > > (See arch/i386/kernel/cpu/centaur.c , search for CX8) > > Sigh. I wonder what genius at VIA came up with that setup.
It was due to some incompatibility with some older Windows variants iirc.
> > Did we add code that uses cmpxchg8b before identify_cpu() gets run ? > > I've not been paying attention to .22rc (busy trying to beat .21 into shape > > for F7) so I may have missed something obvious. Andi? > > That would be a bit complicated in pure asm code. > It's probably best to just not require it as in Christian's patch above. > Without SMP support it is not particularly needed anyways; a irq disabling > emulation should work.
*nod*
Dave
-- http://www.codemonkey.org.uk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |