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Tue, 1 Sep 2020 09:13:17 +0000 (GMT) Received: from [9.85.87.174] (unknown [9.85.87.174]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 1 Sep 2020 09:13:17 +0000 (GMT) Subject: Re: [PATCH] powerpc/mm: Remove DEBUG_VM_PGTABLE support on ppc64 To: Christophe Leroy , linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au References: <20200901080245.67950-1-aneesh.kumar@linux.ibm.com> <4519baaa-cb95-6ebb-200f-4520badb56f6@csgroup.eu> <39467f79-d213-772d-9ed1-93afedc2fc7a@linux.ibm.com> <6661a001-0a00-17b6-cb34-0f3510ca1fec@csgroup.eu> <49fbd2b4-31af-826d-c884-32b7cc1c6e8d@csgroup.eu> From: "Aneesh Kumar K.V" Message-ID: <6a630ab1-f094-d747-e3aa-29d23efc7e47@linux.ibm.com> Date: Tue, 1 Sep 2020 14:43:17 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <49fbd2b4-31af-826d-c884-32b7cc1c6e8d@csgroup.eu> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-09-01_04:2020-09-01, 2020-09-01 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 suspectscore=0 phishscore=0 mlxlogscore=999 bulkscore=0 malwarescore=0 spamscore=0 mlxscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009010080 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anshuman Khandual Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 9/1/20 2:40 PM, Christophe Leroy wrote: > > > Le 01/09/2020 à 10:15, Christophe Leroy a écrit : >> >> >> Le 01/09/2020 à 10:12, Aneesh Kumar K.V a écrit : >>> On 9/1/20 1:40 PM, Christophe Leroy wrote: >>>> >>>> >>>> Le 01/09/2020 à 10:02, Aneesh Kumar K.V a écrit : >>>>> The test is broken w.r.t page table update rules and results in kernel >>>>> crash as below. Disable the support untill we get the tests updated. >>>>> >>>>> >>>>> Signed-off-by: Aneesh Kumar K.V >>>> >>>> Any Fixes: tag ? >>>> >>>>> --- >>>>>   arch/powerpc/Kconfig | 1 - >>>>>   1 file changed, 1 deletion(-) >>>>> >>>>> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig >>>>> index 65bed1fdeaad..787e829b6f25 100644 >>>>> --- a/arch/powerpc/Kconfig >>>>> +++ b/arch/powerpc/Kconfig >>>>> @@ -116,7 +116,6 @@ config PPC >>>>>       # >>>>>       select ARCH_32BIT_OFF_T if PPC32 >>>>>       select ARCH_HAS_DEBUG_VIRTUAL >>>>> -    select ARCH_HAS_DEBUG_VM_PGTABLE >>>> >>>> >>>> You say you remove support for ppc64 but you are removing it for >>>> both PPC64 and PPC32. Should you replace the line by: >>> >>> Does it work on PPC32 with DEBUG_VM enabled? I was expecting it will >>> be broken there too. >> >> I was wondering. I have just started a build to test that on my 8xx. >> I'll tell you before noon (Paris). >> > > There are warnings but it boots OK. So up to you, but if you deactivate > it for both PPC32 and PPC64, say so in the subject like. > I will update the subject line to indicate powerpc instead of ppc64 -aneesh