lkml.org 
[lkml]   [2011]   [May]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: 2.6.39-rc5-git2 boot crashs
On Tue, May 3, 2011 at 1:50 PM, Ingo Molnar <mingo@elte.hu> wrote:
>
> the ELAN .config option influences the following details:
>
>  - sets X86_L1_CACHE_SHIFT to 4 (16 bytes) instead of the typical 6 (64 bytes)
>  - sets X86_ALIGNMENT_16
>  - sets the -march=i486 compiler flag

It also does this to the config diff:

306,307c328,332
< CONFIG_X86_ALIGNMENT_16=y
< CONFIG_X86_MINIMUM_CPU_FAMILY=4
---
> CONFIG_X86_USE_PPRO_CHECKSUM=y
> CONFIG_X86_TSC=y
> CONFIG_X86_CMPXCHG64=y
> CONFIG_X86_CMOV=y
> CONFIG_X86_MINIMUM_CPU_FAMILY=5

because of all the indirect changes it causes.

Now, Werner is actually _running_ on an AMD Opteron (or whatever
family 15 is), I think. And his kernel is SMP-enabled. And that whole
thin looks really really iffy.

How/why do we even allow that combination of SMP and (for example)
arch/x86/lib/atomic64_386_32.S to be picked?

I don't think he actually runs SMP, but the fact that we even allow
that combination looks really odd/iffy. Am I missing something?

Linus
--
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/

\
 
 \ /
  Last update: 2011-05-03 23:49    [W:0.108 / U:0.232 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site