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Wed, 6 Aug 2025 20:46:18 +0000 (GMT) Message-ID: <6afc919bdb18166a71a2dba1a3862709629d5e08.camel@linux.ibm.com> Subject: Re: [PULL 00/50] ppc queue From: Miles Glenn To: =?ISO-8859-1?Q?C=E9dric?= Le Goater , Michael Tokarev , qemu-devel@nongnu.org Cc: Nicholas Piggin , Daniel Henrique Barboza , Michael Kowal , Caleb Schlossin , Gautam Menghani , qemu-stable Date: Wed, 06 Aug 2025 15:46:18 -0500 In-Reply-To: <4468aea8-b8cc-4313-abbe-8a5f58a35adc@redhat.com> References: <20250721162233.686837-1-clg@redhat.com> <10177005-d549-41bc-b0eb-c98b7e475f97@tls.msk.ru> <4468aea8-b8cc-4313-abbe-8a5f58a35adc@redhat.com> Organization: IBM Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5 (3.28.5-27.el8_10) Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODA2MDEzOCBTYWx0ZWRfX4/tvXDMTWMrs kjXyHQJOo2THShiux7nj1USbcsmYqde+Z17c42A3aWJOJb673vEhUk2dE49LrQ1QmyIN2QFVKWp 3YU31+pkFucjdbKktkuvNpD4tD9V3oNrqw+LEWQAdpKtWrbWuX3GdAPUuevsaPXzA1663xn9kJt A3JsVqy9waS/yjZ/0pWsg0/mb7elTkxVqYfh7WfbkGL0t4ksb/WtDpPyu1GfxpTKFu6H3jYS0Zn FKi1Ikb9Ui9Pw9Ygjn12K/WavBo2yFr4i66kMYPSZqhBFiTegHFy+y00GkelhPAwwYgFDECtN55 +fDx745lrXipigLN8L2KsTYTvW0KVLyH01thccV/4565fUEI3jX8oWSlvpYr7GRdsTa7QaazWix 55DuHjOzt6NkX0R2sfIex9cM5LnSiQnk5DhXnZUCXfqWM4jHxe+UoOLJMqrjwqY7DMpQhskr X-Proofpoint-ORIG-GUID: I2JIuqLay92Li5KNwFMgu6N1XMy0_Euq X-Authority-Analysis: v=2.4 cv=LreSymdc c=1 sm=1 tr=0 ts=6893bf1e cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=VuoU5WFxUHF8b41vZTMA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: g9qmyPAhcOuRN7pFI8q29-gEHl9OhOsF X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-06_04,2025-08-06_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 spamscore=0 priorityscore=1501 impostorscore=0 adultscore=0 mlxlogscore=899 bulkscore=0 malwarescore=0 mlxscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508060138 Received-SPF: pass client-ip=148.163.158.5; envelope-from=milesg@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: milesg@linux.ibm.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Tue, 2025-08-05 at 22:07 +0200, Cédric Le Goater wrote: > On 8/5/25 18:26, Miles Glenn wrote: > > On Tue, 2025-07-22 at 17:25 +0300, Michael Tokarev wrote: > > > On 22.07.2025 16:37, Cédric Le Goater wrote: > > > > + Glenn, Michael, Caleb, Gautam > > > > > > > > On 7/22/25 13:44, Michael Tokarev wrote: > > > > > 21.07.2025 19:21, Cédric Le Goater wrote: > > > > > > > > > > > ---------------------------------------------------------------- > > > > > > ppc/xive queue: > > > > > > > > > > > > * Various bug fixes around lost interrupts particularly. > > > > > > * Major group interrupt work, in particular around redistributing > > > > > > interrupts. Upstream group support is not in a complete or usable > > > > > > state as it is. > > > > > > * Significant context push/pull improvements, particularly pool and > > > > > > phys context handling was quite incomplete beyond trivial OPAL > > > > > > case that pushes at boot. > > > > > > * Improved tracing and checking for unimp and guest error situations. > > > > > > * Various other missing feature support. > > > > > > > > > > Is there anything in there which should be picked up for > > > > > stable qemu branches? > > > > > > > > May be the IBM simulation team can say ? > > > > I think this would also require some testing before applying. > > > > > > > > Which stable branch are you targeting ? 7.2 to 10.0 ? > > > > > > There are currently 2 active stable branches, 7.2 and 10.0. > > > Both are supposed to be long-term maintenance. I think 7.2 > > > can be left behind already. > > > > > > Thanks, > > > > > > /mjt > > > > Michael T., > > > > All of the XIVE fixes/changes originating from myself were made in an > > effort to get PowerVM firmware running on PowerNV with minimal testing > > of OPAL firmware. However, even with those fixes, running PowerVM on > > PowerNV is still pretty unstable. While backporting these fixes would > > likely increase the stability of running PowerVM on PowerNV, I do think > > it could pose significant risk to the stability of running OPAL on > > PowerNV. With that in mind, I think it's probably best if we did not > > backport any of my own XIVE changes. > > These seem to be interesting to have : > > ppc/xive2: Fix treatment of PIPR in CPPR update > ppc/xive2: Fix irq preempted by lower priority group irq > ppc/xive: Fix PHYS NSR ring matching > ppc/xive2: fix context push calculation of IPB priority > ppc/xive2: Remote VSDs need to match on forwarding address > ppc/xive2: Fix calculation of END queue sizes > ppc/xive: Report access size in XIVE TM operation error logs > ppc/xive: Fix xive trace event output > > ? > > Thanks, > > C. > I'm still not sure that the benefit is worth the effort, but I certainly don't have a problem with them being backported if someone has the desire and the time to do it. Thanks, Glenn