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 B2BCEC0218A for ; Tue, 28 Jan 2025 22:06:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7C6C210E703; Tue, 28 Jan 2025 22:06:38 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Eaa91jUs"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id CF67210E025 for ; Tue, 28 Jan 2025 22:06:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1738101992; x=1769637992; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=cySwKgD15BN0cm7nhw2MxHMkD1PSuVdgo18bZbgtPo0=; b=Eaa91jUsTi9GzwY8mfZU1zSMB/s5KcX00vzLW82CjZ1V/x1F7t0EU6sP tV9iusK7f7rBMVM5KCrqOau5H7dzGwPXvgI7ndBID8LZH7r2q9EoYJP8/ EyX5OV51qmaWP/UcWYyTCYyZqRMk3FnXjJ/7PhXIhcufPT/SpEY9HGBKG wEIOk5PxEYcIUlrhT6PfERC2Fev3D841mMw1C0FzI4qOX2hpzgC1NJnIz YMGtIbFvlfbzCpPjeIm/c9T9P4WwCBxeYGz9IwiDN/oyhwZiADROSiskW GWTIbcEkgQWI47YvHL/H7tNWn8XLnEIH/6qdhOFL2ytzo6PltsSWyVLJQ Q==; X-CSE-ConnectionGUID: 45HQOzp9R1Ko7vbXeWLsRw== X-CSE-MsgGUID: G/8YDtD6Qm24YF2G5luI0A== X-IronPort-AV: E=McAfee;i="6700,10204,11329"; a="38488943" X-IronPort-AV: E=Sophos;i="6.13,242,1732608000"; d="scan'208";a="38488943" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2025 14:06:32 -0800 X-CSE-ConnectionGUID: sOuyWMd7R1Grl/kuKxio1A== X-CSE-MsgGUID: DJjBiit9STuB/bD7NiixNA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,242,1732608000"; d="scan'208";a="108665460" Received: from szeng-desk.jf.intel.com ([10.165.21.160]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2025 14:06:31 -0800 From: Oak Zeng To: intel-xe@lists.freedesktop.org Cc: joonas.lahtinen@linux.intel.com, Thomas.Hellstrom@linux.intel.com Subject: [PATCH 1/3] drm/xe: Add a function to zap page table by address range Date: Tue, 28 Jan 2025 17:21:43 -0500 Message-Id: <20250128222145.3849874-1-oak.zeng@intel.com> X-Mailer: git-send-email 2.26.3 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" Add a function xe_pt_zap_range. This is similar to xe_pt_zap_ptes but is used when we don't have a vma to work with, such as zap a range mapped to scratch page where we don't have vma. Signed-off-by: Oak Zeng --- drivers/gpu/drm/xe/xe_pt.c | 28 ++++++++++++++++++++++++++++ drivers/gpu/drm/xe/xe_pt.h | 2 ++ 2 files changed, 30 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c index 1ddcc7e79a93..2363260da6a6 100644 --- a/drivers/gpu/drm/xe/xe_pt.c +++ b/drivers/gpu/drm/xe/xe_pt.c @@ -792,6 +792,34 @@ static const struct xe_pt_walk_ops xe_pt_zap_ptes_ops = { .pt_entry = xe_pt_zap_ptes_entry, }; +/** + * xe_pt_zap_range() - Zap (zero) gpu ptes of an virtual address range + * @tile: The tile we're zapping for. + * @vm: The vm we're zapping for. + * @start: Start of the virtual address range, inclusive. + * @end: End of the virtual address range, exclusive. + * + * This is similar to xe_pt_zap_ptes() but it's used when we don't have a + * vma to work with. This is used for example when we're clearing the scratch + * page mapping during vm_bind. + * + */ +void xe_pt_zap_range(struct xe_tile *tile, struct xe_vm *vm, u64 start, u64 end) +{ + struct xe_pt_zap_ptes_walk xe_walk = { + .base = { + .ops = &xe_pt_zap_ptes_ops, + .shifts = xe_normal_pt_shifts, + .max_level = XE_PT_HIGHEST_LEVEL, + }, + .tile = tile, + }; + struct xe_pt *pt = vm->pt_root[tile->id]; + + (void)xe_pt_walk_shared(&pt->base, pt->level, start, + end, &xe_walk.base); +} + /** * xe_pt_zap_ptes() - Zap (zero) gpu ptes of an address range * @tile: The tile we're zapping for. diff --git a/drivers/gpu/drm/xe/xe_pt.h b/drivers/gpu/drm/xe/xe_pt.h index 9ab386431cad..b166b324f455 100644 --- a/drivers/gpu/drm/xe/xe_pt.h +++ b/drivers/gpu/drm/xe/xe_pt.h @@ -43,4 +43,6 @@ void xe_pt_update_ops_abort(struct xe_tile *tile, struct xe_vma_ops *vops); bool xe_pt_zap_ptes(struct xe_tile *tile, struct xe_vma *vma); +void xe_pt_zap_range(struct xe_tile *tile, struct xe_vm *vm, u64 start, u64 end); + #endif -- 2.26.3