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Re: [PATCH] target/arm: Fixed Privileged Access Never (PAN) for aarch32


From: Peter Maydell
Subject: Re: [PATCH] target/arm: Fixed Privileged Access Never (PAN) for aarch32
Date: Fri, 28 Oct 2022 19:17:26 +0100

On Thu, 27 Oct 2022 at 12:26, Timofey Kutergin <tkutergin@gmail.com> wrote:
>
>     - Use CPSR.PAN to check for PAN state in aarch32 mode
>     - throw permission fault during address translation when PAN is
>       enabled and kernel tries to access user acessible page
>     - ignore SCTLR_XP bit for armv7 and armv8 (conflicts with SCTLR_SPAN).
>
> Signed-off-by: Timofey Kutergin <tkutergin@gmail.com>
> ---
>  target/arm/helper.c | 13 +++++++++++--
>  target/arm/ptw.c    | 35 ++++++++++++++++++++++++++++++-----
>  2 files changed, 41 insertions(+), 7 deletions(-)

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Not sure if I'll be able to get this in before softfreeze,
but since it's a bug fix it'll be in 7.2.

thanks
-- PMM



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