From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2D53FC5DF7D for ; Fri, 21 Aug 2026 11:25:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D802010E27E; Fri, 21 Aug 2026 11:25:39 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="WCww7DYU"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0B2CF10E2A1 for ; Fri, 21 Aug 2026 11:25:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1787311538; x=1818847538; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+P0eiQ/atci4SnAlbeD/w8Mlsmka7/SrKJHxJBli9/Y=; b=WCww7DYU7OAOpsCJembFVWyTUpGY7qOS/w+Y7bRL7QGEnlWfZb7+oqdX 8iYmeCh08f3eKtFtEmnojpoTp+aSp4IvetynlIxq+djBBgonpwroQW8Db 9BHBGU58/sSkGslP922LrwpAny6Ms05+OUaGqWIoOavckqJc1VnQhyFCO p5n1UDFnF4DkUMqAQovIoVwQjci+VqGyW8LRFEGWoxKESorwOi579B2fd aLOeuLk66A6BT8DitPJkWSjzpJ4LeCyXgH0HAbZ5FFTESIfbyznjaVR4J RxBk4Qx/Ny+aBG/NMaoM3MkFD0zQ44zeGZA+ZW3wuAD414v7wNspq0v2e Q==; X-CSE-ConnectionGUID: cVrcGeEpSoau+unWDK43Qw== X-CSE-MsgGUID: hXCLa1LSShKsUUELekB7pQ== X-IronPort-AV: E=McAfee;i="6800,10657,11881"; a="90377549" X-IronPort-AV: E=Sophos;i="6.25,235,1779174000"; d="scan'208";a="90377549" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2026 04:25:38 -0700 X-CSE-ConnectionGUID: hQfczMqtQGC2pa2gJYqatQ== X-CSE-MsgGUID: j13iWdh3Snu8W49YfSiuAA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,235,1779174000"; d="scan'208";a="304523425" Received: from jraag-z790m-itx-wifi.iind.intel.com ([10.190.239.23]) by orviesa001.jf.intel.com with ESMTP; 21 Aug 2026 04:25:34 -0700 From: Raag Jadav To: intel-xe@lists.freedesktop.org Cc: matthew.brost@intel.com, rodrigo.vivi@intel.com, thomas.hellstrom@linux.intel.com, riana.tauro@intel.com, michal.wajdeczko@intel.com, matthew.d.roper@intel.com, michal.winiarski@intel.com, matthew.auld@intel.com, dev@lankhorst.se, jani.nikula@intel.com, lukasz.laguna@intel.com, lukas@wunner.de, daniele.ceraolospurio@intel.com, badal.nilawar@intel.com, Raag Jadav Subject: [PATCH v10 06/10] drm/xe/migrate: Introduce xe_migrate_reinit() Date: Fri, 21 Aug 2026 16:53:28 +0530 Message-ID: <20260821112436.545405-7-raag.jadav@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260821112436.545405-1-raag.jadav@intel.com> References: <20260821112436.545405-1-raag.jadav@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" In preparation of usecases which require re-initializing migrate context after PCIe FLR, introduce xe_migrate_reinit() helper. Migrate exec queue and pt_bo already exist in migrate structure but since their contents live on VRAM, they are lost on PCIe FLR and need re-initialization. Signed-off-by: Raag Jadav Reviewed-by: Matthew Brost Tested-by: Lukasz Laguna --- v2: Re-initialize migrate context (Matthew Brost) --- drivers/gpu/drm/xe/xe_gt.c | 10 ++++++++++ drivers/gpu/drm/xe/xe_migrate.c | 12 ++++++++++++ drivers/gpu/drm/xe/xe_migrate.h | 1 + 3 files changed, 23 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c index d4fac8c4d8a4..d2578af4967a 100644 --- a/drivers/gpu/drm/xe/xe_gt.c +++ b/drivers/gpu/drm/xe/xe_gt.c @@ -930,6 +930,16 @@ void xe_gt_flr_prepare(struct xe_gt *gt) */ int xe_gt_reinit(struct xe_gt *gt) { + int err; + + if (xe_gt_is_main_type(gt)) { + struct xe_tile *tile = gt_to_tile(gt); + + err = xe_migrate_reinit(tile->migrate); + if (err) + return err; + } + return xe_uc_reinit(>->uc); } diff --git a/drivers/gpu/drm/xe/xe_migrate.c b/drivers/gpu/drm/xe/xe_migrate.c index 75b83687f1b5..eac91a4b78ed 100644 --- a/drivers/gpu/drm/xe/xe_migrate.c +++ b/drivers/gpu/drm/xe/xe_migrate.c @@ -454,6 +454,18 @@ static int xe_migrate_lock_prepare_vm(struct xe_tile *tile, struct xe_migrate *m return err; } +/** + * xe_migrate_reinit() - Re-initialize a migrate context + * @m: The migration context + * + * Returns: 0 on success, negative error code otherwise. + */ +int xe_migrate_reinit(struct xe_migrate *m) +{ + xe_migrate_prepare_vm(m->tile, m, m->q->vm, NULL); + return xe_exec_queue_reinit(m->q); +} + /** * xe_migrate_init() - Initialize a migrate context * @m: The migration context diff --git a/drivers/gpu/drm/xe/xe_migrate.h b/drivers/gpu/drm/xe/xe_migrate.h index c3a268b01768..3d95d14de146 100644 --- a/drivers/gpu/drm/xe/xe_migrate.h +++ b/drivers/gpu/drm/xe/xe_migrate.h @@ -112,6 +112,7 @@ struct xe_migrate_pt_update { struct xe_migrate *xe_migrate_alloc(struct xe_tile *tile); int xe_migrate_init(struct xe_migrate *m); +int xe_migrate_reinit(struct xe_migrate *m); struct dma_fence *xe_migrate_to_vram(struct xe_migrate *m, unsigned long npages, -- 2.43.0