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Message-ID: <50499F3C.1070706@zytor.com> Date: Fri, 07 Sep 2012 00:16:12 -0700 From: "H. Peter Anvin" <hpa@...or.com> To: Jan Beulich <JBeulich@...e.com> CC: mingo@...e.hu, tglx@...utronix.de, linux-kernel@...r.kernel.org Subject: Re: [PATCH] ix86: improve determination of X86_MINIMUM_CPU_FAMILY On 09/06/2012 11:48 PM, Jan Beulich wrote: > > --- 3.6-rc4/arch/x86/Kconfig.cpu > +++ 3.6-rc4-x86-minimum-cpu-family/arch/x86/Kconfig.cpu > @@ -409,9 +409,9 @@ config X86_CMOV > config X86_MINIMUM_CPU_FAMILY > int > default "64" if X86_64 > - default "6" if X86_32 && X86_P6_NOP > - default "5" if X86_32 && X86_CMPXCHG64 > - default "4" if X86_32 && (X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK) > + default "6" if X86_P6_NOP || X86_CMOV > + default "5" if X86_CMPXCHG64 || X86_TSC > + default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK > default "3" > Erk, this isn't right either. We're not supposed to include CPUID-enumerable features here, so X86_CMOV, X86_CMPXCHG64 and X86_TSC don't belong, and should instead be done via required-features.h. What a mess. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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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