lkml.org 
[lkml]   [2010]   [Jan]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [ RESEND PATCH v3] Memory-Hotplug: Fix the bug on interface /dev/mem for 64-bit kernel
> > 2. pgdat->[start,end], totalram_pages etc...are updated at memory hotplug.
> > Please place the hook nearby them.
>
> arch/x86/mm/init_64.c:arch_add_memory() updates max_pfn_mapped, in
> this sense it's equally OK to update max_pfn/max_low_pfn etc before
> the call to arch_add_memory() ;)

Shaohui, I'd suggest to update max_pfn/max_low_pfn/high_memory in
arch/x86/mm/init_64.c:arch_add_memory() now, for X86_64.

Later on we can add code to arch/x86/mm/init_32.c:arch_add_memory()
for X86_32.

The code cannot be shared anyway.

Thanks,
Fengguang


\
 
 \ /
  Last update: 2010-01-14 15:11    [W:0.048 / U:0.888 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site