Re: [PATCH v4] acpi: pcihp: allow repeating hot-unplug requests

[Kashyap Chamarthy]

On Wed, Apr 26, 2023 at 07:40:02PM +0300, Michael Tokarev wrote:
> 18.04.2023 12:04, Igor Mammedov wrote:
> > with Q35 using ACPI PCI hotplug by default, user's request to unplug
> > device is ignored when it's issued before guest OS has been booted.
> > And any additional attempt to request device hot-unplug afterwards
> > results in following error:
> > 
> >    "Device XYZ is already in the process of unplug"
> > 
> > arguably it can be considered as a regression introduced by [2],
> > before which it was possible to issue unplug request multiple
> > times.
> 
> Stable-8.0 material?

FWIW, I'd say, yes. This fix is useful for stable releases.  As this
solves a real problem for upper-management tools.

I have tested this fix; and it works.  I'll post my testing notes /
reproducer in a follow-up email.  In short, I followed the
reproducer steps from here[1].

[1] https://gitlab.com/libvirt/libvirt/-/issues/309


-- 
/kashyap