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Wed, 25 Mar 2020 03:05:21 +0000 (GMT) Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 91832C605A; Wed, 25 Mar 2020 03:05:20 +0000 (GMT) Received: from [9.70.82.143] (unknown [9.70.82.143]) by b03ledav006.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 25 Mar 2020 03:05:20 +0000 (GMT) Subject: Re: [PATCH v8 11/14] powerpc/vas: Do not use default credits for receive window From: Haren Myneni To: Nicholas Piggin In-Reply-To: <1584931140.88q80wx2at.astroid@bobo.none> References: <1584598120.9256.15237.camel@hbabu-laptop> <1584598722.9256.15262.camel@hbabu-laptop> <1584931140.88q80wx2at.astroid@bobo.none> Content-Type: text/plain; charset="UTF-8" Date: Tue, 24 Mar 2020 20:04:47 -0700 Message-ID: <1585105487.10664.353.camel@hbabu-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.645 definitions=2020-03-24_10:2020-03-23, 2020-03-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 spamscore=0 clxscore=1015 malwarescore=0 impostorscore=0 bulkscore=0 phishscore=0 mlxscore=0 adultscore=0 mlxlogscore=744 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2003250021 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: mikey@neuling.org, ajd@linux.ibm.com, hch@infradead.org, oohall@gmail.com, sukadev@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org, herbert@gondor.apana.org.au Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Mon, 2020-03-23 at 12:40 +1000, Nicholas Piggin wrote: > Haren Myneni's on March 19, 2020 4:18 pm: > > > > System checkstops if RxFIFO overruns with more requests than the > > maximum possible number of CRBs allowed in FIFO at any time. So > > max credits value (rxattr.wcreds_max) is set and is passed to > > vas_rx_win_open() by the the driver. > > This seems like it should be a bug fix or merged in the NX fault > window register patch or something. Yes, it is a bug fix and can affect with any VAS windows, Not related to NX fault window. Hence added as separate patch. > > Thanks, > Nick >