linux-kernel - RE: [PATCH] arm64 memory accesses may cause undefined fault on Fujitsu-A64FX

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Message-ID: <8898674D84E3B24BA3A2D289B872026A6A2A6045@G01JPEXMBKW03>
Date:   Fri, 25 Jan 2019 06:51:08 +0000
From:   "Zhang, Lei" <zhang.lei@...fujitsu.com>
To:     "Zhang, Lei" <zhang.lei@...fujitsu.com>,
        'Mark Rutland' <mark.rutland@....com>,
        "'james.morse@....com'" <james.morse@....com>
CC:     "'catalin.marinas@....com'" <catalin.marinas@....com>,
        "'will.deacon@....com'" <will.deacon@....com>,
        "'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
        "'linux-arm-kernel@...ts.infradead.org'" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH] arm64 memory accesses may cause undefined fault on
 Fujitsu-A64FX

Hi, Mark, James

> -----Original Message-----
> From: linux-arm-kernel
> [mailto:linux-arm-kernel-bounces@...ts.infradead.org] On Behalf Of
> Zhang, Lei
> Sent: Wednesday, January 23, 2019 9:51 PM
> To: 'Mark Rutland'; 'james.morse@....com'
> Cc: 'catalin.marinas@....com'; 'will.deacon@....com';
> 'linux-kernel@...r.kernel.org';
> 'linux-arm-kernel@...ts.infradead.org'; Zhang, Lei/張 雷
> Subject: RE: [PATCH] arm64 memory accesses may cause undefined fault on
> Fujitsu-A64FX
> 
> At first thanks for your comments.
> I thinks James's comments is quite similar with above comment.
> I am reviewing this point now.
> I will respond to your questions after I check this.
As your comments, this patch cannot avoid this problem
completely. So I will post a new patch to resolve this 
problem in different way.

Lei Zhang
zhang.lei@...fujitsu.com