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 DEC92C624D3 for ; Wed, 2 Sep 2026 14:55:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9170610F260; Wed, 2 Sep 2026 14:55:10 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="H96qflWV"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id C8DA310F260 for ; Wed, 2 Sep 2026 14:55:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788360909; x=1819896909; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=1mhk1itkXtdJ1MOUvMopLz0K3MZUk7tWcuLNu3JMbzQ=; b=H96qflWV33VS4Y8VdiKOK1lsgNWEgT1xllDnLZdvBanSoiYtD0RZSbH1 BM/v446mzLfaGpk5PYqq752v//T3pEE88wKfcvivDeCamxmYPVGKrzas8 MwOXPIk2zjKfAua5u4f5nHt18B2/9M8mTvvkY51Zo/CbORbHTqXU+o83d m2EZU5D9sp9zqCeWSxFOrE4F9mkioMnrx9mpiOihj2XOzgW9Z74AiMPvU yusqDEDB6Se6qrAYQsUc0bT8zZCEu+0encLRPbEXMQyCXM5vtlF/lalLj lp9IRYk+dh9Xh/psgU30UNuDM9Ixpmi5vRArF3tNatTxa3l7DWSnrW8ef g==; X-CSE-ConnectionGUID: G6k1+DfTRpC5DxpSX0C/aA== X-CSE-MsgGUID: EalJ8jciRWW0tsxCCQALhw== X-IronPort-AV: E=McAfee;i="6800,10657,11894"; a="92526033" X-IronPort-AV: E=Sophos;i="6.25,258,1779174000"; d="scan'208";a="92526033" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Sep 2026 07:55:09 -0700 X-CSE-ConnectionGUID: 4zBpzH3zQOe39EsKNmj04Q== X-CSE-MsgGUID: soomHKV7Rh6fIOsG7zXr2w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,258,1779174000"; d="scan'208";a="263260135" Received: from tejasupa-desk.iind.intel.com (HELO tejasupa-desk) ([10.190.239.37]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Sep 2026 07:55:06 -0700 From: Tejas Upadhyay To: intel-xe@lists.freedesktop.org Cc: himal.prasad.ghimiray@intel.com, rodrigo.vivi@intel.com, Matthew Brost , Tejas Upadhyay , Michal Wajdeczko Subject: [PATCH V20 11/15] drm/xe/ras: Cache disable_vram_page_offline policy at init Date: Wed, 2 Sep 2026 20:23:54 +0530 Message-ID: <20260902145343.465686-28-tejas.upadhyay@intel.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260902145343.465686-17-tejas.upadhyay@intel.com> References: <20260902145343.465686-17-tejas.upadhyay@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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" The configfs disable_vram_page_offline attribute can only be set before device bind, so its value is immutable at runtime. Cache it in struct xe_drm_ras during xe_ras_init() to avoid repeated configfs lookups on every fault. Reviewed-by: Himal Prasad Ghimiray Cc: Michal Wajdeczko Signed-off-by: Tejas Upadhyay --- drivers/gpu/drm/xe/xe_drm_ras_types.h | 3 +++ drivers/gpu/drm/xe/xe_ras.c | 9 +++++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_drm_ras_types.h b/drivers/gpu/drm/xe/xe_drm_ras_types.h index 8d729ad6a264..0be218ba2db7 100644 --- a/drivers/gpu/drm/xe/xe_drm_ras_types.h +++ b/drivers/gpu/drm/xe/xe_drm_ras_types.h @@ -43,6 +43,9 @@ struct xe_drm_ras { /** @info: info array for all types of errors */ struct xe_drm_ras_counter *info[DRM_XE_RAS_ERR_SEV_MAX]; + + /** @disable_vram_page_offline: cached configfs policy, immutable after init */ + bool disable_vram_page_offline; }; #endif diff --git a/drivers/gpu/drm/xe/xe_ras.c b/drivers/gpu/drm/xe/xe_ras.c index de4cb9ef7355..7a85735c57d5 100644 --- a/drivers/gpu/drm/xe/xe_ras.c +++ b/drivers/gpu/drm/xe/xe_ras.c @@ -3,6 +3,7 @@ * Copyright © 2026 Intel Corporation */ +#include "xe_configfs.h" #include "xe_debugfs.h" #include "xe_device.h" #include "xe_drm_ras.h" @@ -915,6 +916,14 @@ void xe_ras_init(struct xe_device *xe) { int ret; + /* + * TODO: Replace platform check with xe->info.has_disable_vram_page_offline + * once the feature flag is plumbed through device info. + */ + if (xe->info.platform == XE_CRESCENTISLAND) + xe->ras.disable_vram_page_offline = + xe_configfs_get_disable_vram_page_offline(to_pci_dev(xe->drm.dev)); + xe_drm_ras_init(xe); if (!xe->info.has_sysctrl) -- 2.52.0