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Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA bi
From: |
Chris Wright |
Subject: |
Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding |
Date: |
Wed, 30 Nov 2011 08:33:27 -0800 |
User-agent: |
Mutt/1.5.20 (2009-08-17) |
* Peter Zijlstra (address@hidden) wrote:
> On Wed, 2011-11-30 at 21:52 +0530, Dipankar Sarma wrote:
> >
> > Also, if at all topology changes due to migration or host kernel decisions,
> > we can make use of something like VPHN (virtual processor home node)
> > capability on Power systems to have guest kernel update its topology
> > knowledge. You can refer to that in
> > arch/powerpc/mm/numa.c.
>
> I think that fail^Wfeature of PPC is terminally broken. You simply
> cannot change the topology after the fact.
Agreed, there's too many things that consult topology once and never
look back.
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, (continued)
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Anthony Liguori, 2011/11/21
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Andrea Arcangeli, 2011/11/23
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Alexander Graf, 2011/11/23
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Andrea Arcangeli, 2011/11/23
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Dipankar Sarma, 2011/11/30
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Peter Zijlstra, 2011/11/30
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding,
Chris Wright <=
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Andrea Arcangeli, 2011/11/30
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Avi Kivity, 2011/11/21
- Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding, Peter Zijlstra, 2011/11/21