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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B86CCC388F9 for ; Mon, 26 Oct 2020 17:35:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7F44C2225C for ; Mon, 26 Oct 2020 17:35:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1788032AbgJZRfo (ORCPT ); Mon, 26 Oct 2020 13:35:44 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:3626 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1788000AbgJZRfj (ORCPT ); Mon, 26 Oct 2020 13:35:39 -0400 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4CKhnT1Ct6zLnB3; Tue, 27 Oct 2020 01:35:41 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.487.0; Tue, 27 Oct 2020 01:35:27 +0800 From: John Garry To: , CC: , , , , , , John Garry Subject: [PATCH v2 0/4] iommu/iova: Solve longterm IOVA issue Date: Tue, 27 Oct 2020 01:31:37 +0800 Message-ID: <1603733501-211004-1-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.58] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series contains a patch to solve the longterm IOVA issue which leizhen originally tried to address at [0]. Along with this, I included the following: - A smaller helper to clear all IOVAs for a domain - Change polarity of the IOVA magazine helpers - Small optimisation from Cong Wang included, which was never applied [1]. There was some debate of the other patches in that series, but this one is quite straightforward. Differences to v1: - Add IOVA clearing helper - Add patch to change polarity of mag helpers - Avoid logically-redundant extra variable in __iova_rcache_insert() [0] https://lore.kernel.org/linux-iommu/20190815121104.29140-3-thunder.leizhen@huawei.com/ [1] https://lore.kernel.org/linux-iommu/4b74d40a-22d1-af53-fcb6-5d70183705a8@huawei.com/ Cong Wang (1): iommu: avoid taking iova_rbtree_lock twice John Garry (3): iommu/iova: Add free_all_cpu_cached_iovas() iommu/iova: Avoid double-negatives in magazine helpers iommu/iova: Flush CPU rcache for when a depot fills drivers/iommu/iova.c | 66 +++++++++++++++++++++++++------------------- 1 file changed, 38 insertions(+), 28 deletions(-) -- 2.26.2