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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?M2cwbQ37Z7CUJ3kb2feL3rDKJ6h3+ansikyF+UBtow/6VpgLy6je96gRuuRv?= =?us-ascii?Q?qd4LvNB0lfopfZPt1fNjIxpIoqbSLk1LuoLSI9WDoXfFpmSFMO48PxKVLArc?= =?us-ascii?Q?DpQ2TXJHDSx5ME0Jq2cmsFlvYW52+zq/BVOl9U5dOBghMabeVYWQ0KZwCRMl?= =?us-ascii?Q?Vb27s2m0/v9jfCLrcvLXDxr+fo3chWSPiMNEhoBNjAQ/4u2XDyRAMm4nKxPn?= =?us-ascii?Q?vHE7re7LR9CisSDhlU21KLKquciPSXdYkDMLH7NiFlsUEisGkJ9Cj67GwL9T?= =?us-ascii?Q?lWcbaKCN+O4+WWvRbv1VFGmT4WiJsCZT6kNOci3C9koVVUlL0bsfM/EqyBQ2?= =?us-ascii?Q?qzTamnsn//MABl9X0aqMoai+47WZSOkCzpsIjpWqwXKECZQ4DF8Qq7KZzhb2?= =?us-ascii?Q?f3HJScNdnVaCaSED7EewJc7kPbPEv3QAt6X/NGY9yR0tWlF9ZV6O783QxXeR?= =?us-ascii?Q?sXoCj1P8Pjn7GtAM/AQnePTAy3RaoBNZx0cfzHvn97ly/w93QoBRYQ81W5sJ?= =?us-ascii?Q?V+OHKWgVdxuDjLy7vkfd7BiLeJ93W7K2JlgQdAWwE+oPC/SOQf43yt7SDfCL?= =?us-ascii?Q?9Kp/cTsr1gUevhcA8M1gK4A3t7H7qG7ScwsE4qNkgI5ISSFKaQDlqxkQuc/p?= =?us-ascii?Q?2asREhuzfg0ZdT5tIYDzY3WYHBqJzuBe9uaoxiy8u2dhHfJQ9ZlmVb6Rqro3?= =?us-ascii?Q?g9uJR5Aa4jbAULTTpc9BOwioNrP85h06afQHiT3yCBYmdAFsCaxD21OFOa7C?= =?us-ascii?Q?77y18gxzuuySkdXkt7CsaCcECQVDClUUD6EU/JzzqU9KgxoYvQ1V2DJLcxHU?= =?us-ascii?Q?rcMf28K0UD01b07/zVt1IsfU74pGetuKqMl8cxu870KersbUUNoPgKi9pNNc?= =?us-ascii?Q?Njgetomu4p7dp5NZY414SdTl3YupfMwdvGqOsg8YTglgeaHxMqitYJigbPL4?= =?us-ascii?Q?b3gdP0Xg+7wzR1lk7EaRactrSoHchQZhJ//7r/b0Rp401eh2+kP+b7saLccw?= =?us-ascii?Q?pGkJhtpCFSNfq8jx7BENtrSLAZLBuvkZ3y/vSn5MMXDYw/ntnS5Onl7kyhPT?= =?us-ascii?Q?3zD3iJZdn8Ohyfx/Z06trz9OjdIsh+sJujCA2k8UMiPQr/+/9kwceEJjR9dN?= =?us-ascii?Q?WRFNOeVbTKr89ZDkB3IWgv2DyB3Tsu0VdI8anOKGtt6ubNKxRaQkiG9wEpyB?= =?us-ascii?Q?0P881nYJXu/h+woqaQ0Vv6GmrPsHdPQLS0Q2OEcNoiB+/WThUK2xp54bie6c?= =?us-ascii?Q?BjUtu6lr9p1eWk9caK7y+meSP4oFy8jlwqmN/vU3EY4y7FS0MFJ5R5z9pAra?= =?us-ascii?Q?Ls1PVgBZ9yaaFPBmgEH8cldM8OL5sV7W+W5SeW/USU81lWOesTTB7v/9GLAE?= =?us-ascii?Q?VNNbt0FoyFV/ZTwtHIE4D9muIaPpfahbQ7DyJTA4H+466HLaCWUNAyhxN/Yy?= =?us-ascii?Q?Dvr0pUxKHJe3Eo01P1tSwWHC2pVhI/3B3YrjhRh4Q3mg7W8s4PYjyEU96inu?= =?us-ascii?Q?mGbkMPqE7bOtq+CDWJj9+djFz7Kh8C9xLY7cg9yHLNFRZJM7kmWSAUZ23Pxj?= =?us-ascii?Q?RSy2kRVmgBF5M/GyTTzt86UlCdFNjx8aVKQU16dvIoxKRLjmCZYaziDEHH7D?= =?us-ascii?Q?Nw=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 6842b977-2767-4764-8caa-08db000a1224 X-MS-Exchange-CrossTenant-AuthSource: PH8PR11MB8107.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jan 2023 01:59:05.9615 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 0AcB9tckRe5PYppX41Dy8cuw1UvsGwCUJKojzIU8OpwuPiZgVxYN6BkRZWWwQW5GOtBETgoCUfLMPYwR4uoDxUSNhRjWh0Y1SqiLZzRwiBM= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR11MB4962 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org alison.schofield@ wrote: > From: Alison Schofield > > Subject: [PATCH v5 0/5] CXL Poison List Retrieval & Tracing > > Changes in v5: > - Rebase on cxl/next > - Use struct_size() to calc mbox cmd payload .min_out > - s/INTERNAL/INJECTED mocked poison record source > - Added Jonathan Reviewed-by tag on Patch 3 > > Link to v4: > https://lore.kernel.org/linux-cxl/cover.1671135967.git.alison.schofield@intel.com/ > > Add support for retrieving device poison lists and store the returned > error records as kernel trace events. > > The handling of the poison list is guided by the CXL 3.0 Specification > Section 8.2.9.8.4.1. [1] > > Example, triggered by memdev: > $ echo 1 > /sys/bus/cxl/devices/mem3/trigger_poison_list > cxl_poison: memdev=mem3 pcidev=cxl_mem.3 region= region_uuid=00000000-0000-0000-0000-000000000000 dpa=0x0 length=0x40 source=Internal flags= overflow_time=0 I think the pcidev= field wants to be called something like "host" or "parent", because there is no strict requirement that a 'struct cxl_memdev' is related to a 'struct pci_dev'. In fact in that example "cxl_mem.3" is a 'struct platform_device'. Now that I think about it, I think all CXL device events should be emitting the PCIe serial number for the memdev. I will look in the implementation, but do region= and region_uuid= get populated when mem3 is a member of the region? > > Example, triggered by region: > $ echo 1 > /sys/bus/cxl/devices/region5/trigger_poison_list > cxl_poison: memdev=mem0 pcidev=cxl_mem.0 region=region5 region_uuid=bfcb7a29-890e-4a41-8236-fe22221fc75c dpa=0x0 length=0x40 source=Internal flags= overflow_time=0 > cxl_poison: memdev=mem1 pcidev=cxl_mem.1 region=region5 region_uuid=bfcb7a29-890e-4a41-8236-fe22221fc75c dpa=0x0 length=0x40 source=Internal flags= overflow_time=0 > > [1]: https://www.computeexpresslink.org/download-the-specification > > Alison Schofield (5): > cxl/mbox: Add GET_POISON_LIST mailbox command > cxl/trace: Add TRACE support for CXL media-error records > cxl/memdev: Add trigger_poison_list sysfs attribute > cxl/region: Add trigger_poison_list sysfs attribute > tools/testing/cxl: Mock support for Get Poison List > > Documentation/ABI/testing/sysfs-bus-cxl | 28 +++++++++ > drivers/cxl/core/mbox.c | 78 +++++++++++++++++++++++ > drivers/cxl/core/memdev.c | 45 ++++++++++++++ > drivers/cxl/core/region.c | 33 ++++++++++ > drivers/cxl/core/trace.h | 83 +++++++++++++++++++++++++ > drivers/cxl/cxlmem.h | 69 +++++++++++++++++++- > drivers/cxl/pci.c | 4 ++ > tools/testing/cxl/test/mem.c | 42 +++++++++++++ > 8 files changed, 381 insertions(+), 1 deletion(-) > > > base-commit: 589c3357370a596ef7c99c00baca8ac799fce531 > -- > 2.37.3 >