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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8AA1BEB64D7 for ; Mon, 26 Jun 2023 14:09:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230460AbjFZOJG convert rfc822-to-8bit (ORCPT ); Mon, 26 Jun 2023 10:09:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230409AbjFZOJC (ORCPT ); Mon, 26 Jun 2023 10:09:02 -0400 Received: from frasgout11.his.huawei.com (unknown [14.137.139.23]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F133E7A for ; Mon, 26 Jun 2023 07:09:01 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.18.147.227]) by frasgout11.his.huawei.com (SkyGuard) with ESMTP id 4QqTvR2Fvbz9xGgl for ; Mon, 26 Jun 2023 21:58:11 +0800 (CST) Received: from [127.0.0.1] (unknown [10.204.63.22]) by APP1 (Coremail) with SMTP id LxC2BwCnC+fjm5lkLhG+Aw--.37910S2; Mon, 26 Jun 2023 15:08:42 +0100 (CET) Message-ID: Subject: Re: [PATCH v1 0/2] swiotlb: Fix a couple of bugs in sizing areas From: Roberto Sassu To: Petr Tesarik , Christoph Hellwig , Marek Szyprowski , Robin Murphy , "open list:DMA MAPPING HELPERS" , open list Cc: Kefeng Wang , petr@tesarici.cz Date: Mon, 26 Jun 2023 16:08:30 +0200 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT User-Agent: Evolution 3.44.4-0ubuntu1 MIME-Version: 1.0 X-CM-TRANSID: LxC2BwCnC+fjm5lkLhG+Aw--.37910S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKr1kKw4DJw4ktFWDZryUGFg_yoWxurb_ua 4vyr98ArZ8JFs3ZF93GF47C3y09r4xAF1Yqasrt3y3JryUXF95XF1kWFsYqr1kWr4xuryY yrn8ArWrtr1fKjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbwxFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Jr0_JF4l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr1j6F 4UJwAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcVAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCF04k20xvY0x0EwIxGrwCF x2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14 v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY 67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2 IYs7xG6rW3Jr0E3s1lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AK xVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjfUoOJ5UUUUU X-CM-SenderInfo: purev21wro2thvvxqx5xdzvxpfor3voofrz/1tbiAgAABF1jj4tm5gAAs8 X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2023-06-26 at 15:01 +0200, Petr Tesarik wrote: > From: Petr Tesarik > > While reworking the dynamic SWIOTLB implementation, I ran into some > locking issues with the current implementation. I believe the bugs > are serious enough to be fixed separately. Thanks, excellent work! Reviewed-by: Roberto Sassu Roberto > Petr Tesarik (2): > swiotlb: Always set the number of areas before allocating the pool > swiotlb: Reduce the number of areas to match actual memory pool size > > kernel/dma/swiotlb.c | 46 +++++++++++++++++++++++++++++++++----------- > 1 file changed, 35 insertions(+), 11 deletions(-) >