RE: [PATCH] mm,x86: limit 32 bit kernel to 12GB memory

2013-05-11 Thread Yuhong Bao
> - I don't think it's necessarily "system stability". The problem with > large amounts of highmem ends up being that we end up using up almost > all of the lowmem just to *track* the huge amount of highmem, and then > we have so little lowmem that we suck at performance and have various > random

Re: [PATCH] mm,x86: limit 32 bit kernel to 12GB memory

2013-05-02 Thread Linus Torvalds
On Wed, May 1, 2013 at 7:46 PM, Rik van Riel wrote: > > Here's a somewhat friendlier one. Printing out the total amount of > memory in the system may give them some extra motivation to upgrade > to a 64 bit kernel :) This needs more work: - suggesting a 64-bit kernel on a truly 32-bit CPU is in

Re: [PATCH] mm,x86: limit 32 bit kernel to 12GB memory

2013-05-02 Thread Pierre-Loup A. Griffais
Reviewed-by: Pierre-Loup A. Griffais On 05/01/2013 07:46 PM, Rik van Riel wrote: On Wed, 1 May 2013 21:34:26 -0400 Steven Rostedt wrote: On Mon, Apr 29, 2013 at 08:48:17PM -0400, Rik van Riel wrote: It could also print out a friendly message, to inform the user they should upgrade to a 64 b

[PATCH] mm,x86: limit 32 bit kernel to 12GB memory

2013-05-01 Thread Rik van Riel
On Wed, 1 May 2013 21:34:26 -0400 Steven Rostedt wrote: > On Mon, Apr 29, 2013 at 08:48:17PM -0400, Rik van Riel wrote: > > > > It could also print out a friendly message, to > > inform the user they should upgrade to a 64 bit > > kernel to enjoy the use of all of their memory. > > Oh, oh, oh!!!