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Re: [PATCH v4 2/3] target/arm: Add cpu properties to control pauth
From: |
Peter Maydell |
Subject: |
Re: [PATCH v4 2/3] target/arm: Add cpu properties to control pauth |
Date: |
Fri, 8 Jan 2021 14:16:16 +0000 |
On Wed, 16 Dec 2020 at 22:12, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> The crypto overhead of emulating pauth can be significant for
> some workloads. Add two boolean properties that allows the
> feature to be turned off, on with the architected algorithm,
> or on with an implementation defined algorithm.
>
> We need two intermediate booleans to control the state while
> parsing properties lest we clobber ID_AA64ISAR1 into an invalid
> intermediate state.
>
> Tested-by: Mark Rutland <mark.rutland@arm.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Could we have some documentation of the properties in
docs/system/arm/cpu-features.rst, please?
thanks
-- PMM
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