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{ "id": 2194938, "url": "http://patchwork.ozlabs.org/api/covers/2194938/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/cover/20260210091856.12037-1-aaron.ma@canonical.com/", "project": { "id": 15, "url": "http://patchwork.ozlabs.org/api/projects/15/?format=api", "name": "Ubuntu Kernel", "link_name": "ubuntu-kernel", "list_id": "kernel-team.lists.ubuntu.com", "list_email": "kernel-team@lists.ubuntu.com", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260210091856.12037-1-aaron.ma@canonical.com>", "list_archive_url": null, "date": "2026-02-10T09:18:55", "name": "[SRU,Q,0/1] Fix xe GPU suspend/resume crash on Battlemage", "submitter": { "id": 72035, "url": "http://patchwork.ozlabs.org/api/people/72035/?format=api", "name": "Aaron Ma", "email": "aaron.ma@canonical.com" }, "mbox": "http://patchwork.ozlabs.org/project/ubuntu-kernel/cover/20260210091856.12037-1-aaron.ma@canonical.com/mbox/", "series": [ { "id": 491626, "url": "http://patchwork.ozlabs.org/api/series/491626/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/list/?series=491626", "date": "2026-02-10T09:18:55", "name": "Fix xe GPU suspend/resume crash on Battlemage", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/491626/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2194938/comments/", "headers": { "Return-Path": "<kernel-team-bounces@lists.ubuntu.com>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (4096-bit key;\n unprotected) header.d=canonical.com header.i=@canonical.com\n header.a=rsa-sha256 header.s=20251003 header.b=qsUV24KC;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com\n (client-ip=185.125.189.65; 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charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Errors-To": "kernel-team-bounces@lists.ubuntu.com", "Sender": "\"kernel-team\" <kernel-team-bounces@lists.ubuntu.com>" }, "content": "BugLink: https://bugs.launchpad.net/bugs/2141377\n\n[ Impact ]\nIntel Battlemage xe GPU (8086:e212) crashes during system resume with \nNULL pointer dereference in xe_guc_ads_populate_post_load(), making \nsuspend/resume non-functional on affected systems.\n\nRoot cause: Noble 6.17 kernels have commit 59cebf0bdff48 but are missing \nits prerequisite commit 1313351e71181. Without proper forcewake handling, \nMMIO register access causes hardware corruption.\n\n[ Fix ]\nCherry-pick upstream commit from v6.18-rc1:\n- 1313351e71181 (\"drm/xe: make xe_gt_idle_disable_c6() handle the forcewake internally\")\n\n[ Test Plan ]\n1. System: Lenovo ThinkStation P3 Ultra G2 with Battlemage dGPU (8086:e212)\n2. Reproduce: rtcwake -m mem -s 10\n3. Verify: System resumes successfully without crashes\n\n[ Where problems could occur ]\nIt may break xe driver GT idle/power management, affects suspend/resume path.\nCommit is from mainline v6.18-rc1.\n\nThe dGPU is not fully certified on v6.8 kernel, so SRU for questing and oem-6.17." }