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 1057EC4452D for ; Wed, 22 Jul 2026 04:42:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 697C610EC17; Wed, 22 Jul 2026 04:42:29 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="FjgAdQ2P"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) by gabe.freedesktop.org (Postfix) with ESMTPS id 56BFB10E704; Wed, 22 Jul 2026 04:42:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1784695348; x=1816231348; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=DPPvDE2ZYkY75cjC/FOqIdz/rzKIfyUjxxUz+ht8NJo=; b=FjgAdQ2P+ipuNYpfbshL/uSTrYJX1j0NSjxjx6J2yYtH1IxFd9H2fzsl wGWMduEr5GLuO3SzsbAZNEuffdNGzPK8IvIeCcw5/AyKfNj4KVtEA8hjE vZ4mmLCXQyCSCHo0RgkylvcUHED/EmFg8fDSlKsFA+Ikpj6tp051tyZ/v cHMPIuhezhBe5p9+mWF9cILAlzktquJghJR4q3gvKxHRWccumhldLr7yr nVyW3HbVlMY2aNl0+BCpWipBGuTCk8ISb26CUVQT52g5fzFa3o2nZkLcf rT8iKX1FNUplejsHdW11oCKMg96UamCSrVlqbK1gxtpfMkOznE1lTsMrZ g==; X-CSE-ConnectionGUID: PHXdPR9MSTyW0SrWpn+DFw== X-CSE-MsgGUID: 0DYpTbVjSTOY7GpBky/LVQ== X-IronPort-AV: E=McAfee;i="6800,10657,11853"; a="102865802" X-IronPort-AV: E=Sophos;i="6.25,177,1779174000"; d="scan'208";a="102865802" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2026 21:42:27 -0700 X-CSE-ConnectionGUID: yeAK+zsQTJ6aZaftSkRXRQ== X-CSE-MsgGUID: U6MJW0PsSS2/6S9Nm9dxBA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,177,1779174000"; d="scan'208";a="254063558" Received: from gsse-cloud1.jf.intel.com ([10.54.39.91]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2026 21:42:26 -0700 From: Matthew Brost To: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Christian Koenig , Huang Rui , Matthew Auld , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , Zi Yan , Baolin Wang , "Liam R. Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Tvrtko Ursulin , Dave Airlie , Matthew Wilcox Subject: [PATCH 2/3] drm/xe: select TRANSPARENT_HUGEPAGE Date: Tue, 21 Jul 2026 21:42:19 -0700 Message-Id: <20260722044220.1110278-2-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260722044220.1110278-1-matthew.brost@intel.com> References: <20260722044220.1110278-1-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" Xe is currently the only TTM driver that drives the TTM shrinker, and hence the only user of TTM's incremental swap path. That path splits the pool's higher-order compound folios one page at a time via folio_split_driver_managed() so individual pages can be backed up to shmem and freed under memory pressure. folio_split_driver_managed() is part of the transparent hugepage split machinery in mm/huge_memory.c, which is only built when CONFIG_TRANSPARENT_HUGEPAGE is enabled. Select it from DRM_XE so the split primitive is always available for the driver that needs it, rather than forcing it on every TTM user. Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Thomas Zimmermann Cc: David Airlie Cc: Simona Vetter Cc: Christian Koenig Cc: Huang Rui Cc: Matthew Auld Cc: Matthew Brost Cc: Andrew Morton Cc: David Hildenbrand Cc: Lorenzo Stoakes Cc: Zi Yan Cc: Baolin Wang Cc: "Liam R. Howlett" Cc: Nico Pache Cc: Ryan Roberts Cc: Dev Jain Cc: Barry Song Cc: Lance Yang Cc: Tvrtko Ursulin Cc: Dave Airlie Cc: Matthew Wilcox Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org Signed-off-by: Matthew Brost Assisted-by: GitHub-Copilot:claude-opus-4.8 --- drivers/gpu/drm/xe/Kconfig | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig index 4d7dcaff2b91..88a4f3d09d5f 100644 --- a/drivers/gpu/drm/xe/Kconfig +++ b/drivers/gpu/drm/xe/Kconfig @@ -11,6 +11,12 @@ config DRM_XE # the shmem_readpage() which depends upon tmpfs select SHMEM select TMPFS + # Xe is the only TTM driver that exercises the TTM shrinker's + # incremental swap path, which splits the pool's compound folios one + # page at a time via folio_split_driver_managed(). That helper lives + # in the THP split machinery, so pull it in here rather than for all + # TTM users. + select TRANSPARENT_HUGEPAGE select DRM_BUDDY select DRM_CLIENT_SELECTION select DRM_KMS_HELPER -- 2.34.1