tree 58a32bb1357a35c7640bf061ed5775227f67d92e
parent 1d47191de7e15900f8fbfe7cccd7c6e1c2d7c31a
author Kees Cook <keescook@chromium.org> 1530297978 -0700
committer Marc Zyngier <marc.zyngier@arm.com> 1532185334 +0100

KVM: arm64: vgic-its: Remove VLA usage

In the quest to remove all stack VLA usage from the kernel[1], this
switches to using a maximum size and adds sanity checks. Additionally
cleans up some of the int-vs-u32 usage and adds additional bounds checking.
As it currently stands, this will always be 8 bytes until the ABI changes.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Cc: Christoffer Dall <christoffer.dall@arm.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: kvmarm@lists.cs.columbia.edu
Signed-off-by: Kees Cook <keescook@chromium.org>
[maz: dropped WARN_ONs]
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>