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 6C5B9CCD192 for ; Wed, 8 Oct 2025 21:45:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0C56410E8FA; Wed, 8 Oct 2025 21:45:49 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="FOlkQEbt"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) by gabe.freedesktop.org (Postfix) with ESMTPS id 380EC10E8E7 for ; Wed, 8 Oct 2025 21:45:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1759959943; x=1791495943; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=dP9o+CVJv72vJOXSxujhg7Oy8aKPbpc6SgzPwFki+r8=; b=FOlkQEbtHsRe+o7U0dzTO8984EHgTLni237NtCP1FB23DmiaTF/EjlKy sk4tXVAM5jH+8jX7OyblBWj0btWqC3JBOJwUaEH8ij8QIdmGq10tzzeI0 2HIGG4tFa22b5RfVeKg+mk0mNVJ5gz5FRCyLCjgW4dXeMmQ8Ge4Oh84Ur 3lRaYj3lNWzFrjVK60faDSSmPC+fF1R/Pp9rM9J/URiXH7izeTmZOGyhS 7r4BxM1++It2nIPG2pDZoY2URQWZz3F4NqKx8MH+c6MPoW6clHpVSGyPb ViHNAl8hJvzje8VbHqO9C7vqyrh1SoCdrAi5SzKcGl2Q4j5qmfz4RYsJe w==; X-CSE-ConnectionGUID: EYk6BX+pRo2VBgHslfZorA== X-CSE-MsgGUID: +dtJHSEqRf2LReBbZkuNtg== X-IronPort-AV: E=McAfee;i="6800,10657,11576"; a="49726878" X-IronPort-AV: E=Sophos;i="6.19,214,1754982000"; d="scan'208";a="49726878" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2025 14:45:43 -0700 X-CSE-ConnectionGUID: lkEmF8PoTeueId3wXspc1w== X-CSE-MsgGUID: IgzEGAUfS46eM/Rg1xRaIQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,214,1754982000"; d="scan'208";a="217635218" Received: from lstrano-desk.jf.intel.com ([10.54.39.91]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2025 14:45:37 -0700 From: Matthew Brost To: intel-xe@lists.freedesktop.org Subject: [PATCH v10 32/34] drm/xe/vf: Ensure media GT VF recovery runs after primary GT on PTL Date: Wed, 8 Oct 2025 14:45:30 -0700 Message-Id: <20251008214532.3442967-33-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251008214532.3442967-1-matthew.brost@intel.com> References: <20251008214532.3442967-1-matthew.brost@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" It is possible that the media GT's VF post-migration recovery work item gets scheduled before the primary GT's work item. Since the media GT depends on the primary GT's work item to complete CCS restore, if the media GT's work item is scheduled first, detect this condition and re-queue the media GT's work item for a later time. v5: - Adjust debug message (Tomasz) Signed-off-by: Matthew Brost Reviewed-by: Tomasz Lis --- drivers/gpu/drm/xe/xe_gt_sriov_vf.c | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_vf.c b/drivers/gpu/drm/xe/xe_gt_sriov_vf.c index edd98a4da306..b527f78da295 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_vf.c +++ b/drivers/gpu/drm/xe/xe_gt_sriov_vf.c @@ -1107,8 +1107,22 @@ void xe_gt_sriov_vf_print_version(struct xe_gt *gt, struct drm_printer *p) pf_version->major, pf_version->minor); } -static void vf_post_migration_shutdown(struct xe_gt *gt) +static bool vf_post_migration_shutdown(struct xe_gt *gt) { + struct xe_device *xe = gt_to_xe(gt); + + /* + * On platforms where CCS must be restored by the primary GT, the media + * GT's VF post-migration recovery must run afterward. Detect this case + * and re-queue the media GT's restore work item if necessary. + */ + if (xe->info.needs_shared_vf_gt_wq && xe_gt_is_media_type(gt)) { + struct xe_gt *primary_gt = gt_to_tile(gt)->primary_gt; + + if (xe_gt_sriov_vf_recovery_pending(primary_gt)) + return true; + } + spin_lock_irq(>->sriov.vf.migration.lock); gt->sriov.vf.migration.recovery_queued = false; spin_unlock_irq(>->sriov.vf.migration.lock); @@ -1116,6 +1130,8 @@ static void vf_post_migration_shutdown(struct xe_gt *gt) xe_guc_ct_flush_and_stop(>->uc.guc.ct); xe_guc_submit_pause(>->uc.guc); xe_tlb_inval_reset(>->tlb_inval); + + return false; } static size_t post_migration_scratch_size(struct xe_device *xe) @@ -1194,11 +1210,14 @@ static void vf_post_migration_recovery(struct xe_gt *gt) { struct xe_device *xe = gt_to_xe(gt); int err; + bool retry; xe_gt_sriov_dbg(gt, "migration recovery in progress\n"); xe_pm_runtime_get(xe); - vf_post_migration_shutdown(gt); + retry = vf_post_migration_shutdown(gt); + if (retry) + goto queue; if (!xe_sriov_vf_migration_supported(xe)) { xe_gt_sriov_err(gt, "migration is not supported\n"); @@ -1226,6 +1245,12 @@ static void vf_post_migration_recovery(struct xe_gt *gt) xe_pm_runtime_put(xe); xe_gt_sriov_err(gt, "migration recovery failed (%pe)\n", ERR_PTR(err)); xe_device_declare_wedged(xe); + return; + +queue: + xe_gt_sriov_info(gt, "Re-queuing migration recovery\n"); + queue_work(gt->ordered_wq, >->sriov.vf.migration.worker); + xe_pm_runtime_put(xe); } static void migration_worker_func(struct work_struct *w) -- 2.34.1