lkml.org 
[lkml]   [2013]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/2] x86 e820: Check for exactmap appearance when parsing first memmap option
On 01/22/2013 07:20 AM, Thomas Renninger wrote:
> From: Yinghai Lu <yinghai@kernel.org>
>
> memmap=exactmap will throw away all original, but also until then
> user defined (through other provided memmap= parameters) areas.
> That means all memmap= boot parameters passed before a memmap=exactmap
> parameter are not recognized.
> Without this fix:
> memmap=x@y memmap=exactmap memmap=i#k
> only i#k would get recognized.
>
> This is wrong, this fix will only throw away all original e820 areas once
> when memmap=exactmap is found in the whole boot command line and before
> any other memmap= option is parsed.
>

I don't understand why this is wrong. The kernel command line is always
parsed from left to right, and I don't see anything inherently
problematic with that with something like a big hammer like exactmap.

-hpa




\
 
 \ /
  Last update: 2013-01-29 02:41    [W:0.129 / U:0.188 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site