Re: [PATCH] KVM: make uevents configurable

[Marc Zyngier <maz@kernel.org>]

On Wed, 27 Nov 2024 08:38:59 +0000,
Bernhard Kauer <bk@alpico.io> wrote:
> 
> On Tue, Nov 26, 2024 at 11:23:10AM +0000, Marc Zyngier wrote:
> > > > I'm not overly keen on the command-line flag though, as this is the
> > > > sort of things you'd like to be able to control more finely. Or at
> > > > least without having to trigger a reboot.
> > > 
> > > I compile KVM as module, so I can reload it with different parameters
> > > easily.
> > 
> > arm64 doesn't (and cannot) build KVM as a module. 
> 
> Ah, I didn't realize it.  But being able to patch EL2 from EL1 is probably
> more complicated than what is gained with it.

It is mostly pulling the rug from under your feet if you do that on
non-VHE systems, and make absolutely for things like pKVM.

> > > But I can make the module parameter read-write so that it is modifiable
> > > during runtime via /sys/module/kvm/parameters/ even when KVM is compiled
> > > into the kernel.
> > 
> > I guess that'd be the next best thing.
> 
> Ok, I will do that in v2 of the patch to be sent next week.

Thanks.

	M.

-- 
Without deviation from the norm, progress is not possible.