Re: [PATCH] target/arm: Fix MTE access checks for disabled SEL2

[Peter Maydell]

On Mon, 28 Mar 2022 at 19:04, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> On 3/28/22 11:31, Idan Horowitz wrote:
> > While not mentioned anywhere in the actual specification text, the
> > HCR_EL2.ATA bit is treated as '1' when EL2 is disabled at the current
> > security state. This can be observed in the psuedo-code implementation
> > of AArch64.AllocationTagAccessIsEnabled().
> >
> > Signed-off-by: Idan Horowitz <idan.horowitz@gmail.com>
> > ---
> >   target/arm/helper.c    | 2 +-
> >   target/arm/internals.h | 2 +-
> >   2 files changed, 2 insertions(+), 2 deletions(-)
>
> I was immediately thinking, didn't I just fix this?
> But I was patching pauth.  Anyway, good catch.
>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>



Applied to target-arm.next, thanks.

-- PMM