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Re: [PATCH for-5.1 0/3] target/arm: mte+pauth fixes
From: |
Peter Maydell |
Subject: |
Re: [PATCH for-5.1 0/3] target/arm: mte+pauth fixes |
Date: |
Mon, 27 Jul 2020 15:59:39 +0100 |
On Fri, 24 Jul 2020 at 17:38, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> A couple of last minute fixes for MTE:
>
> (1) Peter pointed out that EL3's SCR.ATA needs to be set when
> we're booting a kernel directly. Similarly for API & APK.
>
> (2) Vincenzo pointed out that with RRND=1, we can't rely on
> RGSR having being initialized.
>
> I suppose the only follow-on question here is whether it is
> better to minimize the number of calls to qemu_guest_getrandom,
> or instead to name that our IMPDEF algorithm and use it for
> every call to IRG. We already have other user-space available
> RNG instructions that can drain the entropy pool, so this is
> not really different.
>
Applied to target-arm.next, thanks.
-- PMM