Received: by 2002:ad5:4acb:0:0:0:0:0 with SMTP id n11csp327552imw; Fri, 15 Jul 2022 04:11:20 -0700 (PDT) X-Google-Smtp-Source: AGRyM1s4ldQLfXATHiM7aoepOX+rrh98fUgpOiufPXf+HJiqTe9T16BIZ5gtcZ6doGH9jBEfer0I X-Received: by 2002:a17:906:6a0f:b0:72b:64ce:289d with SMTP id qw15-20020a1709066a0f00b0072b64ce289dmr12538659ejc.663.1657883480538; Fri, 15 Jul 2022 04:11:20 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1657883480; cv=none; d=google.com; s=arc-20160816; b=K+WR5D/9m5O3R6fLRoNc8POb6qLW10rJQI7OQzXwH7oG+rUHn0TRKru0LW7M4hDNlj JoVBu1jhla0S75/r2e2qf4PA7d+eXlOSwrXZYZDdxPNg74FO/pO4+WYZ9rBAgsozdOwB N4SbjZeYvwRKA8ISn3Bk4CBOTQqsyTVkSgEyaRPP62iBXPi/ETUqB0ZfeXUG4oj9qzrp BOgE4EN2Z6hFxbtjhToAcaLCFJXUCbPwZ/ATZAkPHxhg3cDQLc7lkn0S/RZLSgDc2XWI eQ73xCbgZ897ebZUNF1bRUOXFMtlyRL84KX1v6Kq+24gXrLsu+o+K1nacvNPjzC+PCHa 65CA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=GDGY8Lm+2jMyDSo3kcqa0kjetjiddFxJkDg1sSYxPEw=; b=eI+lz8Og8UhV5ryK7RMVrpdXV+WivXz9wYY5jE2Q6fqzdUpMw6yJN0sCqWvaxiN9a5 N7n3DAvYVWED8i8O6PuGZTqC5CoN0ko9Vdj3YimkE4GWuokNZ0nJsLumbI5yutqgYqbL 1jZlVgx+82BVN97yreifWAM2uNK8VfjKTQxCnqdaVOnQTw+1fSW96rF3hcPBcq5jqiG3 e8TI49BDnM4M0nUpEoLEMOUxKdykvBEdUUbi5UiwuWMrL4SiEydIE0OXKZnN6a+c1lQ9 BQ7McMgvZ0EtUHkcc9elV6ODHUE59uw4M0BAUMwUorxgADEuVBd0LzreX10G4B2tumPq RzwQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=DD9MlWRf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id du6-20020a17090772c600b006ff149bed46si1657731ejc.143.2022.07.15.04.10.55; Fri, 15 Jul 2022 04:11:20 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=DD9MlWRf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231226AbiGOKpq (ORCPT + 99 others); Fri, 15 Jul 2022 06:45:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229463AbiGOKpp (ORCPT ); Fri, 15 Jul 2022 06:45:45 -0400 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0059182FA0 for ; Fri, 15 Jul 2022 03:45:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657881945; x=1689417945; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=7hPfTa7r6+uGVc7oEBGFyFfVeXCuCyqHlJT/PvYkT3c=; b=DD9MlWRfUhrglelPZxI3mcg0maTKBlQfs6U4axLs+QogRCcSUyIPEpI+ Uwi5NFHlLlX07Teg/vIbCX8ZZZ21tFIumY1t1sMK3J3lf5VLjy3C+Blev OX/kYKvaLbpLliRBvgICDr0jimld9ym2PiYVI/b3NFCYnVTmthuEwboFm w4CBs0YK1y1zUysGt1zQ/AUoatvPgFvl8oTesKW+Gay2g2awVlQzeozsc s2mjQXsLe9fGYmR/dRqq9uX0DCkfTLkJ67UaPzT1sXrhMBE0PktyQelKW hbErS3xIVOeG9DpE8824qkvQ44rY794zUoTmusjKucumb1hT76H/ZGPdP A==; X-IronPort-AV: E=McAfee;i="6400,9594,10408"; a="286500351" X-IronPort-AV: E=Sophos;i="5.92,273,1650956400"; d="scan'208";a="286500351" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jul 2022 03:45:44 -0700 X-IronPort-AV: E=Sophos;i="5.92,273,1650956400"; d="scan'208";a="654287091" Received: from spr.sh.intel.com ([10.239.53.120]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jul 2022 03:45:42 -0700 From: Chao Gao To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Cc: Chao Gao , Christoph Hellwig , Marek Szyprowski , Robin Murphy Subject: [PATCH 0/3] Small fixes for swiotlb Date: Fri, 15 Jul 2022 18:45:32 +0800 Message-Id: <20220715104535.1053907-1-chao.gao@intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-5.0 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org They are found when I try to rebase my swiotlb optimizations onto the latest dma-mapping tree. Patch 1 is to remove unused fields. Patch 2-3 are to fix a corner case that area size can be smaller than the number of slots in a segment (128). Such small areas conflict with an implication of the mechanism used to track free slots. Chao Gao (3): swiotlb: remove unused fields in io_tlb_mem swiotlb: consolidate rounding up default_nslabs swiotlb: ensure a segment doesn't cross the area boundary include/linux/swiotlb.h | 5 ----- kernel/dma/swiotlb.c | 45 ++++++++++++++++++++++++----------------- 2 files changed, 27 insertions(+), 23 deletions(-) -- 2.25.1