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Re: [PATCH v3 01/42] target/arm: Split s2walk_secure from ipa_secure in


From: Peter Maydell
Subject: Re: [PATCH v3 01/42] target/arm: Split s2walk_secure from ipa_secure in get_phys_addr
Date: Thu, 6 Oct 2022 15:27:31 +0100

On Sat, 1 Oct 2022 at 17:24, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> The starting security state comes with the translation regime,
> not the current state of arm_is_secure_below_el3().
>
> Create a new local variable, s2walk_secure, which does not need
> to be written back to result->attrs.secure -- we compute that
> value later, after the S2 walk is complete.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
> v3: Do not modify ipa_secure, per review.
> ---

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

I did find myself wondering if we should explicitly set
  result->attrs.secure = false;
in an else-branch of the last "if (is_secure)", though.
At the moment we rely on get_phys_addr_lpae() for the stage2
doing that for us, I think. Having the code here always set
result->attrs.secure before the 'return 0' avoids having to think
about that...

thanks
-- PMM



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