From: Michael Ellerman <mpe@ellerman.id.au>
To: Michael Neuling <mikey@neuling.org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
akpm@linux-foundation.org, Rik van Riel <riel@surriel.com>,
Mel Gorman <mgorman@techsingularity.net>,
paulus@ozlabs.org, benh@kernel.crashing.org
Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] powerpc/mm/autonuma: Switch ppc64 to its own implementeation of saved write
Date: Tue, 14 Feb 2017 22:01:43 +1100 [thread overview]
Message-ID: <871sv1m3xk.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <1487044759.21048.24.camel@neuling.org>
Michael Neuling <mikey@neuling.org> writes:
> On Thu, 2017-02-09 at 08:30 +0530, Aneesh Kumar K.V wrote:
>> With this our protnone becomes a present pte with READ/WRITE/EXEC bit cleared.
>> By default we also set _PAGE_PRIVILEGED on such pte. This is now used to help
>> us identify a protnone pte that as saved write bit. For such pte, we will
>> clear
>> the _PAGE_PRIVILEGED bit. The pte still remain non-accessible from both user
>> and kernel.
>>
>> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
>
>
> FWIW I've tested this, so:
>
> Acked-By: Michael Neuling <mikey@neuling.org>
In future if you've tested something then "Tested-by:" is the right tag
to use.
cheers
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next prev parent reply other threads:[~2017-02-14 11:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-09 3:00 [PATCH 1/2] mm/autonuma: Let architecture override how the write bit should be stashed in a protnone pte Aneesh Kumar K.V
2017-02-09 3:00 ` [PATCH 2/2] powerpc/mm/autonuma: Switch ppc64 to its own implementeation of saved write Aneesh Kumar K.V
2017-02-14 3:59 ` Michael Neuling
2017-02-14 11:01 ` Michael Ellerman [this message]
2017-02-15 21:46 ` Andrew Morton
2017-02-16 2:12 ` Aneesh Kumar K.V
2017-02-09 3:16 ` [PATCH 1/2] mm/autonuma: Let architecture override how the write bit should be stashed in a protnone pte Aneesh Kumar K.V
2017-02-14 3:58 ` Michael Neuling
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