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From: Gabriel C <nix.or.die@googlemail.com>
To: Michael Lothian <mike@fireburn.co.uk>
Cc: Adrian Bunk <bunk@kernel.org>, linux-kernel@vger.kernel.org
Subject: Re: Possibility of adding -march=native to x86
Date: Thu, 25 Oct 2007 22:40:11 +0200	[thread overview]
Message-ID: <4720FF2B.9020802@googlemail.com> (raw)
In-Reply-To: <fc94aae90710251312w2eba46e8h5d4f8715ad0e91b6@mail.gmail.com>

Michael Lothian wrote:
>> The MPENTIUM4 option does not only set -march=pentium4, it also enables
>> several other options in arch/i386/Kconfig.cpu resulting in better
>> performance.
> 
> How about an autodetect to set the right options here too using cpuid?
> 
> With a warning of course that the code produced will be specifically
> for the native cpu that it's compiled on.

And kill off all Distro kernels right ? IMO to set that auto magically is bad.

Regards,

Gabriel 


  parent reply	other threads:[~2007-10-25 20:41 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <0EC33A59AA72084CA28B83816B40929F02682BB3@REEDXCLSXM01V03.rbsres01.net>
2007-10-25 18:33 ` Possibility of adding -march=native to x86 Michael Lothian
2007-10-25 18:50   ` Adrian Bunk
2007-10-25 19:09     ` Michael Lothian
2007-10-25 19:17       ` Adrian Bunk
2007-10-25 19:32         ` Michael Lothian
2007-10-25 19:50           ` Adrian Bunk
2007-10-25 20:12             ` Michael Lothian
2007-10-25 20:20               ` Adrian Bunk
2007-10-25 20:20                 ` Arjan van de Ven
2007-10-26 10:41                 ` Pádraig Brady
2007-10-26 11:45                   ` Adrian Bunk
2007-10-25 20:40               ` Gabriel C [this message]
2007-10-25 21:30                 ` Michael Lothian
2007-10-25 21:46                   ` Adrian Bunk
2007-10-25 22:04                     ` H. Peter Anvin
2007-10-25 22:42                     ` Michael Lothian
2007-10-25 22:58                       ` Adrian Bunk
     [not found]                     ` <fc94aae90710251518l1cc129eahf570177e5b516197@mail.gmail.com>
     [not found]                       ` <20071025222826.GY30533@stusta.de>
2007-10-25 22:58                         ` Michael Lothian
2007-10-26  9:16   ` Thomas Gleixner

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