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Date:   Sat, 14 May 2022 12:47:00 -0400
From:   John David Anglin <dave.anglin@...l.net>
To:     Sasha Levin <sashal@...nel.org>, Helge Deller <deller@....de>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        James.Bottomley@...senpartnership.com, linux-parisc@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.17 21/21] Revert "parisc: Fix patch code locking
 and flushing"

On 2022-05-14 12:24 p.m., Sasha Levin wrote:
> On Tue, May 10, 2022 at 05:49:31PM +0200, Helge Deller wrote:
>> Hello Sascha,
>>
>> please drop this patch from all your stable-series queues....
>> It shouldn't be backported.
>
> I've dropped it, but... why?
It exposed a problem in the kernel flush code for PA 1.x machines. The patch works okay on
all PA 2.0 machines.  It also works on PA 1.x machines when flush_cache_all is used to flush
changes to memory.

Helge is investigating PA 1.x problem.

-- 
John David Anglin  dave.anglin@...l.net

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