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X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ZbL8AjnwprXGMLF8DehZ6aIwTI1HqoUREBlrXoKh5Y80QvAFZ7isb+lHS+EjVd2L+VcXCaXWQFBDpnEl2Lxt9qZ7hwAkHWKF72PEPNQmdDo= X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR10MB6099 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-04-25_02,2025-04-24_02,2025-02-21_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxlogscore=999 mlxscore=0 spamscore=0 phishscore=0 bulkscore=0 adultscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2504070000 definitions=main-2504250076 X-Proofpoint-GUID: Vi6TyKkk2VO226NXZbgWXC-3S9-eviop X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNDI1MDA3NiBTYWx0ZWRfXxxqqYnojJVIa uVIdOGP7/C0UzPVGc3yFxkrIJMmcOrQi1Bxu7jlcE7qPhxP7si2rh2nqzEsW2BQ9p1nCFOsOZns Yf1ChXwe4h6VUh7/0hvw7JSMffT5Ot0x/MCvhrJDQ9dG/GJnmW4N0sohsqiQF02iaIgFnmoG8dU KItAbYcKxiH2GCRIp54hQX7AERcbj1gaDF5Ltiq0IKUK+kjL0pdcY/HsDSq3zv+IWkIbzi8YgL3 Ki+OHfAJwhM/3sz6yQSr2+H12Mj4+NhDPupXN2h+azet6DvJFy6Jt9Pq9l+37rdyuFh2RkRuYer gg3I9GWR3oz/llUYazOwrpJqXC7dcr+ZUYiVdPT3O/EISzjDJIV8P2TCW3FZFJ9r/u3Mk16CsCl rKWlOU6g X-Proofpoint-ORIG-GUID: Vi6TyKkk2VO226NXZbgWXC-3S9-eviop On 24/04/2025 19:28, Bjorn Helgaas wrote: > [+to Yijun @Dell in case there's some testing opportunity, thread at > https://lore.kernel.org/r/81c040d54209627de2d8b150822636b415834c7f.1742900213.git.karolina.stolarek@oracle.com] > > On Thu, Apr 24, 2025 at 11:01:11AM +0200, Karolina Stolarek wrote: >> >> The only way to inject GHES errors I'm aware of is Mauro's patch for >> qemu[1], so I went down the virtualization path. As for working with the >> actual hardware, I'd need to ask around and learn more about the platform. > > I'd be surprised if the qemu firmware supports firmware-first > handling, so I wouldn't expect to be able to exercise this path that > way. I think there are some bits in HEST and similar tables that tell > us about this, e.g., ACPI r6.5, sec 18.3.2.4. It's possible that some of the nuances of this escaped me. I decided to pick up the series, as I saw "PCI Express bus error injection via GHES" script and thought it might be useful. > Unfortunately there are some typos in the spec (FIRMWARE_FIRST, > FIRMWAREFIRST in 18.4), so it's a little hard to find all the > references. Thanks for the pointers, I'll take a look. > It's a long shot, but I added Yijun as a Dell contact that who might > have a pointer to someone who could possibly test GHES logging on a > Dell box with and without your patch so we could have a concrete > comparison of the dmesg log differences. Thank you very much. Let's see, maybe we'll get lucky :) All the best, Karolina > >>> If you can't produce actual logs for comparison, I think we can take >>> info from a sample log somebody has posted and synthesize what the >>> changes would be after this patch. >> >> I also found some logs at some point, mostly from 2021 and 2023, but I felt >> bad about mocking up the messages and tried to produce actual logs. If I >> can't find a way to get this working in two weeks, I'll revisit this idea. >> >> All the best, >> Karolina >> >> ------------------------------------------------------------- >> [1] - https://lore.kernel.org/lkml/76824dfc6bb5dd23a9f04607a907ac4ccf7cb147.1740653898.git.mchehab+huawei@kernel.org/