From: "Andreas Färber" <afaerber@suse.de>
To: Igor Mammedov <imammedo@redhat.com>, qemu-devel@nongnu.org
Cc: ehabkost@redhat.com
Subject: Re: [Qemu-devel] [PATCH v3 for-2.3 1/2] numa: introduce machine callback for VCPU to node mapping
Date: Thu, 19 Mar 2015 18:14:55 +0100 [thread overview]
Message-ID: <550B040F.6070109@suse.de> (raw)
In-Reply-To: <1426784962-7541-2-git-send-email-imammedo@redhat.com>
Am 19.03.2015 um 18:09 schrieb Igor Mammedov:
> Current default round-robin way of distributing VCPUs among
> NUMA nodes might be wrong in case on multi-core/threads
> CPUs. Making guests confused wrt topology where cores from
> the same socket are on different nodes.
>
> Allow a machine to override default mapping by providing
> MachineClass->cpu_index_to_socket_id()
MachineClass::cpu_index_to_socket_id() please - can be fixed when applying.
> callback which would allow it group VCPUs from a socket
> on the same NUMA node.
>
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> v3:
> - split out numa/machine change into a separate patch
> ---
> include/hw/boards.h | 5 +++++
> include/sysemu/numa.h | 3 ++-
> numa.c | 18 +++++++++++++-----
> vl.c | 2 +-
> 4 files changed, 21 insertions(+), 7 deletions(-)
--
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GF: Felix Imendörffer, Jane Smithard, Jennifer Guild, Dilip Upmanyu,
Graham Norton; HRB 21284 (AG Nürnberg)
next prev parent reply other threads:[~2015-03-19 17:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-19 17:09 [Qemu-devel] [PATCH v3 for-2.3 0/2] numa: Fix default VCPUs to node mapping Igor Mammedov
2015-03-19 17:09 ` [Qemu-devel] [PATCH v3 for-2.3 1/2] numa: introduce machine callback for VCPU " Igor Mammedov
2015-03-19 17:14 ` Andreas Färber [this message]
2015-03-19 17:09 ` [Qemu-devel] [PATCH v3 for-2.3 2/2] pc: fix default VCPU to NUMA " Igor Mammedov
2015-03-19 17:13 ` [Qemu-devel] [PATCH v3 for-2.3 0/2] numa: Fix default VCPUs to " Andreas Färber
2015-03-19 17:44 ` Eduardo Habkost
2015-03-20 10:24 ` Igor Mammedov
2015-03-20 14:52 ` Eduardo Habkost
2015-03-20 15:01 ` Igor Mammedov
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