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Wed, 29 May 2019 08:44:01 +0000 From: Robert Richter To: Borislav Petkov , Tony Luck , "James Morse" , Mauro Carvalho Chehab CC: "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Robert Richter Subject: [PATCH 00/21] EDAC, mc, ghes: Fixes and updates to improve memory error reporting Thread-Topic: [PATCH 00/21] EDAC, mc, ghes: Fixes and updates to improve memory error reporting Thread-Index: AQHVFfqpRPIVISrUxEabgIu4Vi+wkA== Date: Wed, 29 May 2019 08:44:01 +0000 Message-ID: <20190529084344.28562-1-rrichter@marvell.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: AM6PR01CA0046.eurprd01.prod.exchangelabs.com (2603:10a6:20b:e0::23) To MN2PR18MB3408.namprd18.prod.outlook.com (2603:10b6:208:16c::25) x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.20.1 x-originating-ip: [78.54.13.57] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: e54f0e39-a8d9-4ca8-8892-08d6e411cc11 x-microsoft-antispam: BCL:0; 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SFP:1101; SCL:1; SRVR:MN2PR18MB3437; H:MN2PR18MB3408.namprd18.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: marvell.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: yx51KFYZ5sIjeGBZzMuYEHe/kstObOfSuNvoVDPyHnjsiHhw491/uSylLx/Und+NEgbuFyvAAkJprnl9/bcq3xox67ycx9pBejif9A/ALS4eYlxmhOIQQ67wzMGaozzBNf+T5202GJD517qTprxdjirL8TxGxH4oFGMAz1bvSfkopa9g9qaiNcxfuSnja+qMhklIkb5E/O7CbCnkJU4SI8In0Tp7uk6tEcPueufh6SZg8Ndy/8rNNEB2/zP0DwTqJHCWoWTHLzRfzpqlYoFhXVHPEqHUfSNjlkP4Z54Iqlc8XA8RWMlSDQVuNruZMY1TlrrA8IhmOV+QtnUDYEzIVEJs2fMHqdzSTrVlhxYBbTHsCM8XUqb7qQDNa7SnSROu6btQT3SdFIHFJxCWDDNDEYg7eCq5HeWLCCv98ktvbKE= MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: e54f0e39-a8d9-4ca8-8892-08d6e411cc11 X-MS-Exchange-CrossTenant-originalarrivaltime: 29 May 2019 08:44:01.2924 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: rrichter@marvell.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR18MB3437 X-OriginatorOrg: marvell.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-05-29_05:, , signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Current arm64 systems that use the ghes driver lack kernel support for a proper memory error reporting. Following issues are seen: * Error record shows insufficient data, such as "EDAC MC0: 1 CE unknown error on unknown label", * DMI DIMM labels are not decoded for error reporting, * No memory hierarchy known (NUMA topology), * No per layer reporting, * Significant differences to x86 error reports. This patch set addresses all the above involving a rework of the ghes_edac and edac_mc driver. Patch #1: Repost of an already accepted patch sent to the ml. Adding it here for completeness as I did not find it in a repository yet. The fix is also required for this series. Note there is a modification compared to the previous version that further reduces complexity (early break of the loop removed). Patches #2-#11: General fixes and improvements of the ghes and mc drivers. Most of it is a rework of existing code without functional changes to improve, ease, cleanup and join common code. The changes are in preparation of and a requirment for the following patches that improve ghes error reports. Patches #12-#20: Improve error memory reporting of the ghes driver including: * support for legacy API (patch #12), * NUMA detection, one mc device per node (patches #13-#16), * support for DMI DIMM label information (patch #17), * per-layer reporting (patches #18-#20). Patches #21: Documentation updates. All changes should keep existing systems working as before. All systems that are using ghes will also benefit from the update. There is a fallback in the ghes driver that disables NUMA or enters a fake mode if some of the NUMA or DIMM information is inconsistent. So it should not break existing systems that provide broken firmware tables. The series has been tested on a Marvell/Cavium ThunderX2 system. Here some example logs and sysfs entries: Boot log of memory hierarchy and dimm detection: EDAC DEBUG: mem_info_setup: DIMM0: Found mem range [0x0000008800000000-0x0000009ffcffffff] on node 0, handle: 0x0038, label: N0 DIMM_A0 EDAC DEBUG: mem_info_setup: DIMM1: Found mem range [0x0000008800000000-0x0000009ffcffffff] on node 0, handle: 0x0039, label: N0 DIMM_B0 EDAC DEBUG: mem_info_setup: DIMM2: Found mem range [0x0000008800000000-0x0000009ffcffffff] on node 0, handle: 0x003a, label: N0 DIMM_C0 EDAC DEBUG: mem_info_setup: DIMM3: Found mem range [0x0000008800000000-0x0000009ffcffffff] on node 0, handle: 0x003b, label: N0 DIMM_D0 EDAC DEBUG: mem_info_setup: DIMM4: Found mem range [0x0000008800000000-0x0000009ffcffffff] on node 0, handle: 0x003c, label: N0 DIMM_E0 EDAC DEBUG: mem_info_setup: DIMM5: Found mem range [0x0000008800000000-0x0000009ffcffffff] on node 0, handle: 0x003d, label: N0 DIMM_F0 EDAC DEBUG: mem_info_setup: DIMM6: Found mem range [0x0000008800000000-0x0000009ffcffffff] on node 0, handle: 0x003e, label: N0 DIMM_G0 EDAC DEBUG: mem_info_setup: DIMM7: Found mem range [0x0000008800000000-0x0000009ffcffffff] on node 0, handle: 0x003f, label: N0 DIMM_H0 EDAC DEBUG: mem_info_setup: DIMM8: Found mem range [0x0000009ffd000000-0x000000bffcffffff] on node 1, handle: 0x004f, label: N1 DIMM_I0 EDAC DEBUG: mem_info_setup: DIMM9: Found mem range [0x0000009ffd000000-0x000000bffcffffff] on node 1, handle: 0x0050, label: N1 DIMM_J0 EDAC DEBUG: mem_info_setup: DIMM10: Found mem range [0x0000009ffd000000-0x000000bffcffffff] on node 1, handle: 0x0051, label: N1 DIMM_K0 EDAC DEBUG: mem_info_setup: DIMM11: Found mem range [0x0000009ffd000000-0x000000bffcffffff] on node 1, handle: 0x0052, label: N1 DIMM_L0 EDAC DEBUG: mem_info_setup: DIMM12: Found mem range [0x0000009ffd000000-0x000000bffcffffff] on node 1, handle: 0x0053, label: N1 DIMM_M0 EDAC DEBUG: mem_info_setup: DIMM13: Found mem range [0x0000009ffd000000-0x000000bffcffffff] on node 1, handle: 0x0054, label: N1 DIMM_N0 EDAC DEBUG: mem_info_setup: DIMM14: Found mem range [0x0000009ffd000000-0x000000bffcffffff] on node 1, handle: 0x0055, label: N1 DIMM_O0 EDAC DEBUG: mem_info_setup: DIMM15: Found mem range [0x0000009ffd000000-0x000000bffcffffff] on node 1, handle: 0x0056, label: N1 DIMM_P0 DIMM label entries in sysfs: # grep . /sys/devices/system/edac/mc/mc*/dimm*/dimm_label /sys/devices/system/edac/mc/mc0/dimm0/dimm_label:N0 DIMM_A0 /sys/devices/system/edac/mc/mc0/dimm1/dimm_label:N0 DIMM_B0 /sys/devices/system/edac/mc/mc0/dimm2/dimm_label:N0 DIMM_C0 /sys/devices/system/edac/mc/mc0/dimm3/dimm_label:N0 DIMM_D0 /sys/devices/system/edac/mc/mc0/dimm4/dimm_label:N0 DIMM_E0 /sys/devices/system/edac/mc/mc0/dimm5/dimm_label:N0 DIMM_F0 /sys/devices/system/edac/mc/mc0/dimm6/dimm_label:N0 DIMM_G0 /sys/devices/system/edac/mc/mc0/dimm7/dimm_label:N0 DIMM_H0 /sys/devices/system/edac/mc/mc1/dimm0/dimm_label:N1 DIMM_I0 /sys/devices/system/edac/mc/mc1/dimm1/dimm_label:N1 DIMM_J0 /sys/devices/system/edac/mc/mc1/dimm2/dimm_label:N1 DIMM_K0 /sys/devices/system/edac/mc/mc1/dimm3/dimm_label:N1 DIMM_L0 /sys/devices/system/edac/mc/mc1/dimm4/dimm_label:N1 DIMM_M0 /sys/devices/system/edac/mc/mc1/dimm5/dimm_label:N1 DIMM_N0 /sys/devices/system/edac/mc/mc1/dimm6/dimm_label:N1 DIMM_O0 /sys/devices/system/edac/mc/mc1/dimm7/dimm_label:N1 DIMM_P0 Memory error reports in the kernel log: {1}[Hardware Error]: Error 4, type: corrected {1}[Hardware Error]: section_type: memory error {1}[Hardware Error]: error_status: 0x0000000000000400 {1}[Hardware Error]: physical_address: 0x000000bd0db44000 {1}[Hardware Error]: node: 1 card: 3 module: 0 rank: 0 bank: 256 column: 10 bit_position: 16 {1}[Hardware Error]: DIMM location: N1 DIMM_L0 EDAC MC1: 1 CE ghes_mc on N1 DIMM_L0 (card:3 module:0 page:0xbd0db44 offset:0x0 grain:0 syndrome:0x0 - APEI location: node:1 card:3 module:0 rank:0 bank:256 col:10 bit_pos:16 handle:0x0052 status(0x0000000000000400): Storage error in DRAM memory) Error counters in sysfs (zero counters dropped): # find /sys/devices/system/edac/mc/ -name \*count | sort -V | xargs grep . | sed -e '/:0/d' /sys/devices/system/edac/mc/mc0/ce_count:5 /sys/devices/system/edac/mc/mc0/csrow0/ce_count:1 /sys/devices/system/edac/mc/mc0/csrow0/ch0_ce_count:1 /sys/devices/system/edac/mc/mc0/csrow3/ce_count:1 /sys/devices/system/edac/mc/mc0/csrow3/ch0_ce_count:1 /sys/devices/system/edac/mc/mc0/csrow4/ce_count:1 /sys/devices/system/edac/mc/mc0/csrow4/ch0_ce_count:1 /sys/devices/system/edac/mc/mc0/csrow6/ce_count:2 /sys/devices/system/edac/mc/mc0/csrow6/ch0_ce_count:2 /sys/devices/system/edac/mc/mc0/dimm0/dimm_ce_count:1 /sys/devices/system/edac/mc/mc0/dimm3/dimm_ce_count:1 /sys/devices/system/edac/mc/mc0/dimm4/dimm_ce_count:1 /sys/devices/system/edac/mc/mc0/dimm6/dimm_ce_count:2 /sys/devices/system/edac/mc/mc1/ce_count:4 /sys/devices/system/edac/mc/mc1/csrow0/ce_count:1 /sys/devices/system/edac/mc/mc1/csrow0/ch0_ce_count:1 /sys/devices/system/edac/mc/mc1/csrow3/ce_count:1 /sys/devices/system/edac/mc/mc1/csrow3/ch0_ce_count:1 /sys/devices/system/edac/mc/mc1/csrow6/ce_count:2 /sys/devices/system/edac/mc/mc1/csrow6/ch0_ce_count:2 /sys/devices/system/edac/mc/mc1/dimm0/dimm_ce_count:1 /sys/devices/system/edac/mc/mc1/dimm3/dimm_ce_count:1 /sys/devices/system/edac/mc/mc1/dimm6/dimm_ce_count:2 Robert Richter (21): EDAC, mc: Fix edac_mc_find() in case no device is found EDAC: Fixes to use put_device() after device_add() errors EDAC: Kill EDAC_DIMM_PTR() macro EDAC: Kill EDAC_DIMM_OFF() macro EDAC: Introduce mci_for_each_dimm() iterator EDAC, mc: Cleanup _edac_mc_free() code EDAC, mc: Remove per layer counters EDAC, mc: Rework edac_raw_mc_handle_error() to use struct dimm_info EDAC, ghes: Use standard kernel macros for page calculations EDAC, ghes: Remove pvt->detail_location string EDAC, ghes: Unify trace_mc_event() code with edac_mc driver EDAC, ghes: Add support for legacy API counters EDAC, ghes: Rework memory hierarchy detection EDAC, ghes: Extract numa node information for each dimm EDAC, ghes: Moving code around ghes_edac_register() EDAC, ghes: Create one memory controller device per node EDAC, ghes: Fill sysfs with the DMI DIMM label information EDAC, mc: Introduce edac_mc_alloc_by_dimm() for per dimm allocation EDAC, ghes: Identify dimm by node, card, module and handle EDAC, ghes: Enable per-layer reporting based on card/module EDAC, Documentation: Describe CPER module definition and DIMM ranks Documentation/admin-guide/ras.rst | 31 +- drivers/edac/edac_mc.c | 360 +++++++++--------- drivers/edac/edac_mc.h | 26 +- drivers/edac/edac_mc_sysfs.c | 103 ++--- drivers/edac/ghes_edac.c | 609 +++++++++++++++++++++++------- drivers/edac/i10nm_base.c | 3 +- drivers/edac/i3200_edac.c | 3 +- drivers/edac/i5000_edac.c | 5 +- drivers/edac/i5100_edac.c | 14 +- drivers/edac/i5400_edac.c | 4 +- drivers/edac/i7300_edac.c | 3 +- drivers/edac/i7core_edac.c | 3 +- drivers/edac/ie31200_edac.c | 7 +- drivers/edac/pnd2_edac.c | 4 +- drivers/edac/sb_edac.c | 2 +- drivers/edac/skx_base.c | 3 +- drivers/edac/ti_edac.c | 2 +- include/linux/edac.h | 141 ++++--- 18 files changed, 815 insertions(+), 508 deletions(-) -- 2.20.1