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Re: [PATCH] x86/raid6: correctly check for assembler capabilities

From Paul Bolle <pebolle@tiscali.nl>
Newsgroups linux.kernel
Subject Re: [PATCH] x86/raid6: correctly check for assembler capabilities
Date 2015-06-16 22:40 +0200
Message-ID <pC5Oi-4ZG-33@gated-at.bofh.it> (permalink)
References (2 earlier) <oPSJI-3Lw-11@gated-at.bofh.it> <oPSTo-4cE-17@gated-at.bofh.it> <pC51T-3OF-11@gated-at.bofh.it> <pC5bA-40P-19@gated-at.bofh.it> <pC5lf-4rn-7@gated-at.bofh.it>
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On Tue, 2015-06-16 at 13:05 -0700, H. Peter Anvin wrote:
> So this related to the CONFIG_AS_ symbols for assembly.  We really would
> like to do things like actually adding dependencies on assembler or
> compiler support into Kconfig proper, rather than having two independent
> mechanisms.  That way we could do, for example:
> 
> config RAID6_AVX2
> 	depends on X86 && AS_AVX2

I have no idea what AS_AVX2 means, sorry. So what would it mean if
someone has a .config with
    CONFIG_AS_AVX2=foo

Ie, what would happen if someone using a toolchain for which that would
not be possible tries to build a kernel with that symbol set? That
person's .config would end up containing
    # CONFIG_AS_AVX2 is not set

or similar, right? 


Paul Bolle

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Thread

Re: [PATCH] x86/raid6: correctly check for assembler capabilities "H. Peter Anvin" <hpa@zytor.com> - 2015-06-16 21:50 +0200
  Re: [PATCH] x86/raid6: correctly check for assembler capabilities Paul Bolle <pebolle@tiscali.nl> - 2015-06-16 22:00 +0200
    Re: [PATCH] x86/raid6: correctly check for assembler capabilities "H. Peter Anvin" <hpa@zytor.com> - 2015-06-16 22:10 +0200
      Re: [PATCH] x86/raid6: correctly check for assembler capabilities Paul Bolle <pebolle@tiscali.nl> - 2015-06-16 22:40 +0200
        Re: [PATCH] x86/raid6: correctly check for assembler capabilities "H. Peter Anvin" <hpa@zytor.com> - 2015-06-16 22:50 +0200
          Re: [PATCH] x86/raid6: correctly check for assembler capabilities Paul Bolle <pebolle@tiscali.nl> - 2015-06-16 23:00 +0200

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