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Re: init-dom0less: Weird use of cpupool in xl dominfo


  • To: xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • Date: Wed, 31 Jul 2024 11:08:28 +0100
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  • Cc: Juergen Gross <jgross@xxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
  • Delivery-date: Wed, 31 Jul 2024 10:08:37 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 31/07/2024 11:03 am, Amneesh Singh wrote:
> Hello, I was going through the source code for init-dom0less as I was
> facing some issue after applying this patchset. Feel free to ignore it
> however, as it seems unrelated to the issue I am encountering.
>
> https://lists.xenproject.org/archives/html/xen-devel/2024-05/msg01825.html
>
> One peculiar thing I noticed was that the "cpupool" field is being used
> as a bitfield to check individual vCPUs. However afaik, "cpupool" is
> supposed to be the cpupool *ID*. That matches the fact that the cpupool
> value for all my VMs is 0, as I only have a single cpupool (id = 0). Am
> I overlooking something, or am I correct? Here is the relevant code:
>
> https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=tools/helpers/init-dom0less.c;h=fee93459c4b9da59446a2f8dfcf5cbfc4d95aeab;hb=HEAD#l176

CC'ing relevant people.

But yes - that looks distinctly wrong.

~Andrew



 


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