From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: Igor Mammedov <imammedo@redhat.com>
Cc: qemu-devel@nongnu.org,
Nishanth Aravamudan <nacc@linux.vnet.ibm.com>,
Eduardo Habkost <ehabkost@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [RFC PATCH] numa: enable sparse node numbering
Date: Tue, 24 Jun 2014 18:58:09 +1000 [thread overview]
Message-ID: <53A93DA1.1020203@ozlabs.ru> (raw)
In-Reply-To: <20140624093348.094e6176@nial.usersys.redhat.com>
On 06/24/2014 05:33 PM, Igor Mammedov wrote:
> On Mon, 23 Jun 2014 12:33:10 -0700
> Nishanth Aravamudan <nacc@linux.vnet.ibm.com> wrote:
>
>> Add a present field to NodeInfo which indicates if a given nodeid was
>> present on the command-line or not. Current code relies on a memory
>> value being passed for a node to indicate presence, which is
>> insufficient in the presence of memoryless nodes or sparse numbering.
>> Adjust the iteration of various NUMA loops to use the maximum known NUMA
>> ID rather than the number of NUMA nodes.
> Why would you need sparse numbering?
> What task exactly are you trying to solve?
This is to reproduce+debug the real POWERPC hardware behavior. No practical
use as far as I can tell.
--
Alexey
next prev parent reply other threads:[~2014-06-24 8:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-23 19:33 [Qemu-devel] [RFC PATCH] numa: enable sparse node numbering Nishanth Aravamudan
2014-06-24 0:48 ` [Qemu-devel] [RFC PATCH v2] " Nishanth Aravamudan
2014-06-24 1:08 ` [Qemu-devel] [RFC PATCH] ppc/spapr: support sparse NUMA " Nishanth Aravamudan
2014-06-24 3:34 ` Nishanth Aravamudan
2014-06-24 7:43 ` [Qemu-devel] [RFC PATCH v2] numa: enable sparse " Hu Tao
2014-06-24 17:40 ` [Qemu-devel] [RFC PATCH v3] " Nishanth Aravamudan
2014-06-25 11:21 ` Igor Mammedov
2014-06-25 16:13 ` Nishanth Aravamudan
2014-06-25 16:52 ` Eduardo Habkost
2014-06-25 17:04 ` Nishanth Aravamudan
2014-06-25 18:24 ` Michael S. Tsirkin
2014-06-26 6:29 ` Igor Mammedov
2014-06-25 18:23 ` Michael S. Tsirkin
2014-06-26 9:09 ` Hu Tao
2014-06-26 17:58 ` Nishanth Aravamudan
2014-06-26 18:39 ` Eduardo Habkost
2014-06-26 19:37 ` Eduardo Habkost
2014-06-30 18:26 ` Nishanth Aravamudan
2014-06-30 21:48 ` Eduardo Habkost
2014-06-24 7:33 ` [Qemu-devel] [RFC PATCH] " Igor Mammedov
2014-06-24 8:58 ` Alexey Kardashevskiy [this message]
2014-06-24 16:39 ` Nishanth Aravamudan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=53A93DA1.1020203@ozlabs.ru \
--to=aik@ozlabs.ru \
--cc=ehabkost@redhat.com \
--cc=imammedo@redhat.com \
--cc=mst@redhat.com \
--cc=nacc@linux.vnet.ibm.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).