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Re: [Qemu-devel] [PATCH v3 for-2.3 1/2] numa: introduce machine callback
From: |
Andreas Färber |
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 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 |
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 <address@hidden>
> ---
> 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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