Re: [PATCH] KVM: arm64: Reject the stage-2 MMU pointer hypercalls under pKVM

[Marc Zyngier <maz@kernel.org>]

On Mon, 14 Sep 2026 19:11:59 +0100,
Fuad Tabba <fuad.tabba@linux.dev> wrote:
> 
> On Mon, 14 Sept 2026 at 18:58, <sashiko-bot@kernel.org> wrote:
> >
> > Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
> >
> > Pre-existing issues:
> > - [Critical] Hypercall handlers `handle___kvm_adjust_pc`, `handle___vgic_v5_save_apr`, and `handle___vgic_v5_restore_vmcr_apr` dereference host-provided pointers via `kern_hyp_va()` without validation, allowing a malicious host to corrupt EL2-private memory under pKVM.
> 
> All three are correct, and all three are already being fixed.
> handle___kvm_adjust_pc in [1], the GICv5 handlers in [2], and the rest
> in this patch.

But that's part of the problem. I see a bunch of random patches
addressing similar problems, sent without any logic.

You really need to group related patches together, because the only
possible outcome of your current way of posting things is that I'll
drop something on the floor.

	M.

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