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Re: [PATCH for-6.1 v2] machine: Disallow specifying topology parameters
From: |
Cleber Rosa |
Subject: |
Re: [PATCH for-6.1 v2] machine: Disallow specifying topology parameters as zero |
Date: |
Thu, 22 Jul 2021 18:25:02 -0400 |
User-agent: |
mu4e 1.4.15; emacs 27.2 |
Yanan Wang writes:
> In the SMP configuration, we should either specify a topology
> parameter with a reasonable value (equal to or greater than 1)
> or just leave it omitted and QEMU will calculate its value.
> Configurations which explicitly specify the topology parameters
> as zero like "sockets=0" are meaningless, so disallow them.
>
> However, the commit 1e63fe685804d
> (machine: pass QAPI struct to mc->smp_parse) has documented that
> '0' has the same semantics as omitting a parameter in the qapi
> comment for SMPConfiguration. So this patch fixes the doc and
> also adds the corresponding sanity check in the smp parsers.
>
> Suggested-by: Andrew Jones <drjones@redhat.com>
> Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
> ---
> hw/core/machine.c | 14 ++++++++++++++
> qapi/machine.json | 6 +++---
> qemu-options.hx | 12 +++++++-----
> 3 files changed, 24 insertions(+), 8 deletions(-)
Hi Yanan,
This looks somewhat similar to this very old patch of mine:
https://mail.gnu.org/archive/html/qemu-devel/2020-10/msg03039.html
I'm putting a reference here because I believe the test can be salvaged
and slightly adapted for this patch of yours.
Let me know if I can help anyhow.
Thanks,
- Cleber.