Messages in this thread | | | Date | Tue, 3 May 2011 22:50:51 +0200 | From | Ingo Molnar <> | Subject | Re: 2.6.39-rc5-git2 boot crashs |
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* H. Peter Anvin <hpa@zytor.com> wrote:
> On 05/03/2011 01:17 PM, Linus Torvalds wrote: > > > > That said, I don't really see why ELAN would be so special. > > > > ELAN used to have a nonstandard A20 enabling sequence, until someone > found out that changes to the mainline sequence had made ELAN work as a > side effect. > > At this point, it's just a CPU selection thing, so it makes very little > sense.
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
So in terms of the kernel image it seems to be mostly equivalent to selecting i486 from the CPU menu - except the X86_ALIGNMENT_16 detail (which does not seem to do anything substantive, AFAICS).
Thanks,
Ingo
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