Re: [PATCH v2 0/2] KVM: arm64: Assorted vgic fixes for 6.14

[Oliver Upton <oliver.upton@linux.dev>]

On Wed, Feb 12, 2025 at 06:25:56PM +0000, Marc Zyngier wrote:
> Alexander, while fuzzing KVM/arm64, found an annoying set of problems,
> all stemming from the fact that the vgic can be initialised or
> destroyed in parallel with the rest of the guest still being live.
> 
> Yes, this is annoying.
> 
> This second version takes a different approach at the problem,
> plugging the glaring hole we have between vgic creation and private
> interrupt allocation.
> 
> Although this is more invasive, I'm more confident about this one than
> the initial version I posted a week ago.

Much better place now! Here's to the next pile of syzkaller bugs :)

Reviewed-by: Oliver Upton <oliver.upton@linux.dev>

> Alex, I'd very much appreciate your testing on this.

I too would like to see the tires kicked before we pick this up, if it
isn't too much trouble Alex.

> Marc Zyngier (2):
>   KVM: arm64: timer: Drop warning on failed interrupt signalling
>   KVM: arm64: vgic: Hoist SGI/PPI alloc from vgic_init() to
>     kvm_create_vgic()
> 
>  arch/arm64/kvm/arch_timer.c     | 16 ++++---
>  arch/arm64/kvm/vgic/vgic-init.c | 74 ++++++++++++++++-----------------
>  2 files changed, 44 insertions(+), 46 deletions(-)
> 
> -- 
> 2.39.2
>