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 CEAE0C54E72 for ; Tue, 19 Mar 2024 02:43:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 95DAF10EC2B; Tue, 19 Mar 2024 02:43:03 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="kWOJbVbU"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4369B10E9B4 for ; Tue, 19 Mar 2024 02:42:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1710816177; x=1742352177; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=N6piBQTefMLPJ9uBcFjj+oUKzBEu8WroyFypzozDEms=; b=kWOJbVbUeSy2ZEIVFqdmSbC3syXkAoqAnXeKasJpHRX7yL0K/Fa/fkVE WwA8hX34nVtiOTWMCiMP/IUYk+fDH6EGV+n3cEbm64KTh3AevdJ/qOrne 6gIiwUqdSolikRrc1uXes/awwrYNIN7hhFXPL1VDwgWDW0r7fC8tJ9eHD S+fsr2dMV7wMnG/pKTjQSAT88ak6ZkBJ2xL4KwA/s1lD+FfXmnxAOk6XS owH6TcQ3xVfqB8flQAm762oYbjWPXgTdd+gIYKmcPw7Ejqdy9sjByP6iO WUSB+M/buDhFeIwE91BY1Hcah9rJvunLKBN3AQXlvPTkMz4o2B9/60Ar+ Q==; X-IronPort-AV: E=McAfee;i="6600,9927,11017"; a="5540738" X-IronPort-AV: E=Sophos;i="6.07,135,1708416000"; d="scan'208";a="5540738" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Mar 2024 19:42:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,135,1708416000"; d="scan'208";a="14130194" Received: from szeng-desk.jf.intel.com ([10.165.21.149]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Mar 2024 19:42:56 -0700 From: Oak Zeng To: intel-xe@lists.freedesktop.org Cc: thomas.hellstrom@intel.com, matthew.brost@intel.com, brian.welty@intel.com, himal.prasad.ghimiray@intel.com Subject: [PATCH 2/8] drm/xe/svm: Add DRM_XE_SVM kernel config entry Date: Mon, 18 Mar 2024 22:55:05 -0400 Message-Id: <20240319025511.1598354-3-oak.zeng@intel.com> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20240319025511.1598354-1-oak.zeng@intel.com> References: <20240319025511.1598354-1-oak.zeng@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" DRM_XE_SVM kernel config entry is added so xe svm feature can be configured before kernel compilation. Signed-off-by: Oak Zeng Co-developed-by: Niranjana Vishwanathapura Signed-off-by: Niranjana Vishwanathapura Cc: Matthew Brost Cc: Thomas Hellström Cc: Brian Welty --- drivers/gpu/drm/xe/Kconfig | 21 +++++++++++++++++++++ drivers/gpu/drm/xe/xe_tile.c | 4 ++++ 2 files changed, 25 insertions(+) diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig index 1a556d087e63..e244165459c5 100644 --- a/drivers/gpu/drm/xe/Kconfig +++ b/drivers/gpu/drm/xe/Kconfig @@ -83,6 +83,27 @@ config DRM_XE_FORCE_PROBE 4571. Use "!*" to block the probe of the driver for all known devices. +config DRM_XE_SVM + bool "Enable Shared Virtual Memory support in xe" + depends on DRM_XE + depends on ARCH_ENABLE_MEMORY_HOTPLUG + depends on ARCH_ENABLE_MEMORY_HOTREMOVE + depends on MEMORY_HOTPLUG + depends on MEMORY_HOTREMOVE + depends on ARCH_HAS_PTE_DEVMAP + depends on SPARSEMEM_VMEMMAP + depends on ZONE_DEVICE + depends on DEVICE_PRIVATE + depends on MMU + select HMM_MIRROR + select MMU_NOTIFIER + default y + help + Choose this option if you want Shared Virtual Memory (SVM) + support in xe. With SVM, virtual address space is shared + between CPU and GPU. This means any virtual address such + as malloc or mmap returns, variables on stack, or global + memory pointers, can be used for GPU transparently. menu "drm/Xe Debugging" depends on DRM_XE diff --git a/drivers/gpu/drm/xe/xe_tile.c b/drivers/gpu/drm/xe/xe_tile.c index f1c4f9de51df..b52a00a6b5d5 100644 --- a/drivers/gpu/drm/xe/xe_tile.c +++ b/drivers/gpu/drm/xe/xe_tile.c @@ -159,7 +159,9 @@ static int tile_ttm_mgr_init(struct xe_tile *tile) */ int xe_tile_init_noalloc(struct xe_tile *tile) { +#if IS_ENABLED(CONFIG_DRM_XE_SVM) struct xe_device *xe = tile_to_xe(tile); +#endif int err; xe_device_mem_access_get(tile_to_xe(tile)); @@ -177,8 +179,10 @@ int xe_tile_init_noalloc(struct xe_tile *tile) xe_tile_sysfs_init(tile); +#if IS_ENABLED(CONFIG_DRM_XE_SVM) if (xe->info.has_usm) xe_devm_add(tile, &tile->mem.vram); +#endif err_mem_access: xe_device_mem_access_put(tile_to_xe(tile)); return err; -- 2.26.3