linux-hardening - Re: [RFC PATCH 6/9] arm64: smccc: create proper stack frames for HVC/SMC calls

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Message-ID: <YWb+19izRou0L2tZ@sirena.org.uk>
Date:   Wed, 13 Oct 2021 16:44:23 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-hardening@...r.kernel.org, mark.rutland@....com,
        catalin.marinas@....com, will@...nel.org
Subject: Re: [RFC PATCH 6/9] arm64: smccc: create proper stack frames for
 HVC/SMC calls

On Wed, Oct 13, 2021 at 05:22:40PM +0200, Ard Biesheuvel wrote:
> Create proper stack frames using the provided macros for HVC/SMC calling
> helpers that use the stack. This adds the PAC return address signing
> when enabled, and ensures that the unwinder can deal with occurrences
> of these routines appearing on the call stack.

Reviewed-by: Mark Brown <broonie@...nel.org>

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