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Re: [PATCH v2 2/2] qemu-options: Add missing "sockets=2,maxcpus=2" to CL
From: |
Andrew Jones |
Subject: |
Re: [PATCH v2 2/2] qemu-options: Add missing "sockets=2,maxcpus=2" to CLI "-smp 2" |
Date: |
Wed, 29 Sep 2021 16:38:38 +0200 |
On Tue, Sep 28, 2021 at 08:11:34PM +0800, Yanan Wang wrote:
> There is one numa config example in qemu-options.hx currently
> using "-smp 2" and assuming that there will be 2 sockets and
> 2 cpus totally. However now the actual calculation logic of
> missing sockets and cores is not immutable and is considered
> liable to change. Although we will get maxcpus=2 finally based
> on current parser, it's always stable to specify it explicitly.
>
> So "-smp 2,sockets=2,maxcpus=2" will be optimal when we expect
> multiple sockets and 2 cpus totally.
>
> Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
> ---
> qemu-options.hx | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/qemu-options.hx b/qemu-options.hx
> index dcd9595650..ff8917c5e1 100644
> --- a/qemu-options.hx
> +++ b/qemu-options.hx
> @@ -395,7 +395,7 @@ SRST
> -m 2G \
> -object memory-backend-ram,size=1G,id=m0 \
> -object memory-backend-ram,size=1G,id=m1 \
> - -smp 2 \
> + -smp 2,sockets=2,maxcpus=2 \
> -numa node,nodeid=0,memdev=m0 \
> -numa node,nodeid=1,memdev=m1,initiator=0 \
> -numa cpu,node-id=0,socket-id=0 \
> --
> 2.19.1
>
Reviewed-by: Andrew Jones <drjones@redhat.com>
- [PATCH v2 0/2] qemu-options: Trivial doc fixes related to -smp, Yanan Wang, 2021/09/28
- [PATCH v2 1/2] qemu-options: Tweak [, maxcpus=cpus] to [, maxcpus=maxcpus], Yanan Wang, 2021/09/28
- Re: [PATCH v2 1/2] qemu-options: Tweak [,maxcpus=cpus] to [,maxcpus=maxcpus], Daniel P . Berrangé, 2021/09/28
- Re: [PATCH v2 1/2] qemu-options: Tweak [,maxcpus=cpus] to [,maxcpus=maxcpus], Andrew Jones, 2021/09/29
- Re: [PATCH v2 1/2] qemu-options: Tweak [, maxcpus=cpus] to [, maxcpus=maxcpus], Laurent Vivier, 2021/09/29
- [PATCH v2 2/2] qemu-options: Add missing "sockets=2, maxcpus=2" to CLI "-smp 2", Yanan Wang, 2021/09/28