linux-kernel - Re: [PATCH v13 6/7] arm64: mte: Report async tag faults before suspend

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Message-ID: <20210212172420.GG7718@arm.com>
Date:   Fri, 12 Feb 2021 17:24:21 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Vincenzo Frascino <vincenzo.frascino@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kasan-dev@...glegroups.com,
        Andrew Morton <akpm@...ux-foundation.org>,
        Will Deacon <will@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Evgenii Stepanov <eugenis@...gle.com>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Subject: Re: [PATCH v13 6/7] arm64: mte: Report async tag faults before
 suspend

On Thu, Feb 11, 2021 at 03:33:52PM +0000, Vincenzo Frascino wrote:
>  void mte_suspend_exit(void)
>  {
>  	if (!system_supports_mte())
>  		return;
>  
>  	update_gcr_el1_excl(gcr_kernel_excl);
> +
> +	/* Clear SYS_TFSR_EL1 after suspend exit */
> +	write_sysreg_s(0, SYS_TFSR_EL1);
> +
>  }

As per Lorenzo's comment, with this hunk removed:

Reviewed-by: Catalin Marinas <catalin.marinas@....com>