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Message-ID: <Y1VRgf1wsng07cMT@kroah.com>
Date:   Sun, 23 Oct 2022 16:36:49 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Chen Lin <chen45464546@....com>
Cc:     will@...nel.org, robin.murphy@....com, joro@...tes.org,
        treding@...dia.com, linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Chen Lin <chen.lin5@....com.cn>
Subject: Re: [PATCH] iommu/arm-smmu: Warn once when the perfetcher errata
 patch fails to allpy

On Sat, Oct 22, 2022 at 10:45:59AM +0800, Chen Lin wrote:
> From: Chen Lin <chen.lin5@....com.cn>
> 
> Default reset value of secure banked register SMMU_sACR.cache_lock is 1.
> If it is not been set to 0 by secure software(eg: atf), the non-secure 
> linux cannot clear ARM_MMU500_ACTLR_CPRE bit. In this situation,
> the prefetcher errata is not applied successfully, warn once.
> 
> Signed-off-by: Chen Lin <chen.lin5@....com.cn>
> ---
>  drivers/iommu/arm/arm-smmu/arm-smmu-impl.c | 3 +++
>  1 file changed, 3 insertions(+)

As has been stated many times before, please fix your email systems and
stop using personal accounts, if you wish for us to think that you
really are developing from a zte.com.cn account.

thanks,

greg k-h

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