lkml.org 
[lkml]   [2008]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: + bootmem-node-setup-agnostic-free_bootmem.patch added to -mm tree
On Tue, Apr 15, 2008 at 2:14 PM, Johannes Weiner <hannes@saeurebad.de> wrote:
> Hi,
>
> "Yinghai Lu" <yhlu.kernel@gmail.com> writes:
>
>
> >> > 2. intel cross node box: node0: 0g-2g, 4g-6g, node1: 2g-4g, 6g-8g. i
> >> > don't think they have two bdata struct for every node.
> >>
> >> How do the bdata structures represent this setup right now? Are you
> >> sure that there is not a node descriptor for every contiguous region?
> >
> > http://lkml.org/lkml/2008/3/25/233
> >
> > Subject [patch] srat, x86_64: Add support for nodes spanning other nodes
> >
> > For example, If the physical address layout on a two node system with 8 GB
> > memory is something like:
> > node 0: 0-2GB, 4-6GB
> > node 1: 2-4GB, 6-8GB
> >
> > Current kernels fail to boot/detect this NUMA topology.
> >
> > ACPI SRAT tables can expose such a topology which needs to be supported.
> >
> > Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
>
> As I understood the code (more guessing than understanding), it breaks
> down these physical nodes into contiguous logical memory blocks which
> then get represented by having a node descriptor for each of them. Can
> you confirm that?

Not sure, on x86_64 one node should have one bdata only.
execpt suresh update that to make one node have two bdata.

YH


\
 
 \ /
  Last update: 2008-04-15 23:21    [W:1.190 / U:0.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site