Re: (subset) [PATCH v9 0/6] arm_ffa, KVM: Fix FF-A emad offset calculations

[Marc Zyngier <maz@kernel.org>]

On Tue, 07 Jul 2026 12:56:24 +0100,
Will Deacon <will@kernel.org> wrote:
> 
> On Tue, Jul 07, 2026 at 11:58:01AM +0100, Marc Zyngier wrote:
> > On Thu, 02 Jul 2026 10:38:37 +0000, Sebastian Ene wrote:
> > > This series fixes the Endpoint Memory Access Descriptor (EMAD) offset
> > > calculations and adds the necessary bounds checks for both the core
> > > FF-A driver and the pKVM hypervisor.
> > > 
> > > Prior to FF-A version 1.1, the memory region header didn't specify an
> > > explicit offset for the EMADs, leading to the assumption that they
> > > immediately follow the header.
> > > However, from v1.1 onwards, the specification dictates using the
> > > ep_mem_offset` field to determine the start of the memory access
> > > array.
> > > 
> > > [...]
> > 
> > Applied to fixes, thanks!
> > 
> > [3/6] KVM: arm64: Fix bounds checking in do_ffa_mem_reclaim()
> >       commit: 8c6db30d79528279abbeb416e4f533f1f91b8724
> > [4/6] KVM: arm64: Validate the offset to the mem access descriptor
> >       commit: a6b49d27c17909608d54523220bb6f3498d4a1df
> > [5/6] KVM: arm64: Ensure FFA ranges are page aligned
> >       commit: 6a7a181f6921db3d9aed1bba7e15547fefd7eedc
> > [6/6] KVM: arm64: Zero out the stack initialized data in the FFA handler
> >       commit: 2bd3c6c702f3a9e2bcb3b536b0fbbaa645005d71
> 
> Thanks, Marc!
> 
> I think Sudeep was also happy for the driver changes to go via the KVM
> tree, unless you'd prefer not to pick them up [1].

Ah, I missed that. Let me queue these suckers as well.

Thanks,

	M.

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