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Date: Thu, 17 May 2007 13:15:08 -0700 From: "H. Peter Anvin" <hpa@...or.com> To: Simon Arlott <simon@...e.lp0.eu> CC: Claas Langbehn <claas@...tdir.de>, LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: This kernel requires the following features not present on the CPU... (on a VIA C7 CPU) Simon Arlott wrote: > > Is it automatic? I have CONFIG_X86_CMPXCHG=y without cx8 showing in > cpuinfo, and it appears to work fine. > > Will your changes needlessly prevent the kernel running? Would I be > right in thinking that the kernel is successfully using cmpxchg even > though it's considered disabled? I realise people compile kernels for > the wrong CPU but preventing them working when it's been chosen > correctly seems wrong. > CX8 isn't cmpxchg; it's cmpxchg8b. -hpa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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