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 6C8BCC433FE for ; Wed, 5 Oct 2022 17:48:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230019AbiJERsh (ORCPT ); Wed, 5 Oct 2022 13:48:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44744 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229450AbiJERse (ORCPT ); Wed, 5 Oct 2022 13:48:34 -0400 Received: from mail-ej1-x62b.google.com (mail-ej1-x62b.google.com [IPv6:2a00:1450:4864:20::62b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9E743B0C for ; Wed, 5 Oct 2022 10:48:33 -0700 (PDT) Received: by mail-ej1-x62b.google.com with SMTP id o21so743966ejm.11 for ; Wed, 05 Oct 2022 10:48:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=T7vmkKrcbukpzojz/C0yPU7kDNmejVOGQprU/+VGjPg=; b=dVi25dvodr8t/gBegAqLu+rK8KzgAh4keTp2/KK7+Fje72aOUSQprjCW9gEVTRPyjx tAR/dx3QTfQXRA6VPY4wpM3my7uLryBptIJgQEwf488NAfjAoP8LVPe8RNH3JH2nF7sx aSCqpz5VQahY6uVL7dwnQMyPVmiXdxxw0KbZxftvRhnAbhmWO/tMzRIJy/UhRt5/60f2 DCQUCakAm6HPmMzYpnTSZVSIwee3DWyUMQHfzVhPsxXN3b2Nl7nX2LF2JoXdLaGHNfxB H+UxR4u7ojJZ444EYA93u8Pv20FyYp56cTV856Mn9ZVwPFmHgjPuzwjeAMe7GKYfUEZZ da9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=T7vmkKrcbukpzojz/C0yPU7kDNmejVOGQprU/+VGjPg=; b=cTU+vrGMm5HVp0IZ9U2EwGeKTV1T8JRCg818CvuwB2ftOaiVDLPy914eWjfEYJkTfz mvGVyvSTkN5RiWvijqD6gnfYmKtQhK6vxGAo07NYm8MWdpDpSpnPU0DDlRkAbcrB8gnW Y/9A36wRtynOdiRgSk3Ft7eYBmOC5qNDV+qIEcHtxhQhdQPJvtc5McG16iBvfmhnT0hY 44xv7Gq84tM7jhQ7kQjiQcX2Sxq1i46dZZYhKPNg3GRL9oceF7FPTA+0tOIMeUT0TQML hSzSG0XqOdJD/ESyTH77nNQi6fIUqO0hOPEITesg6rRtR34V9YaExhS4Ix0ZQoZEMUV5 CIIA== X-Gm-Message-State: ACrzQf1/eE7imRHNfC5DAp/A+5QVFmWqMQlsL7vlyQ4+j3RyFVoY8w8O SDTs9H8LiEjbvQlpsE2Oz1c= X-Google-Smtp-Source: AMsMyM743WLaut2TEDuu9Otx1L5edbBgqf2bI1BtlwsFJAYPKcXauwkgwejLZrQib1lNS1Y2SACG3w== X-Received: by 2002:a17:907:5c2:b0:77e:def7:65d8 with SMTP id wg2-20020a17090705c200b0077edef765d8mr596533ejb.487.1664992111996; Wed, 05 Oct 2022 10:48:31 -0700 (PDT) Received: from otyshchenko.router ([212.22.223.21]) by smtp.gmail.com with ESMTPSA id ee32-20020a056402292000b0044e7862ab3fsm4320697edb.7.2022.10.05.10.48.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Oct 2022 10:48:31 -0700 (PDT) From: Oleksandr Tyshchenko To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org Cc: Oleksandr Tyshchenko , Stefano Stabellini , Juergen Gross Subject: [PATCH 0/2] Misc fixes for Xen grant DMA-mapping layer Date: Wed, 5 Oct 2022 20:48:21 +0300 Message-Id: <20221005174823.1800761-1-olekstysh@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Oleksandr Tyshchenko Hello all. These are several fixes I collected when playing with virtio-net device using Xen grant mappings. Tested with both virtio-blk and virtio-net devices. Oleksandr Tyshchenko (2): xen/virtio: Fix n_pages calculation in xen_grant_dma_map(unmap)_page() xen/virtio: Fix potential deadlock when accessing xen_grant_dma_devices drivers/xen/grant-dma-ops.c | 29 ++++++++++++++++++++++------- 1 file changed, 22 insertions(+), 7 deletions(-) -- 2.25.1