From patchwork Tue Aug 31 10:36:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yongji Xie X-Patchwork-Id: 504899 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 449DBC43214 for ; Tue, 31 Aug 2021 10:39:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E4A960FC3 for ; Tue, 31 Aug 2021 10:39:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241191AbhHaKkH (ORCPT ); Tue, 31 Aug 2021 06:40:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241099AbhHaKib (ORCPT ); Tue, 31 Aug 2021 06:38:31 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 917C6C0612AF for ; Tue, 31 Aug 2021 03:37:29 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id g13-20020a17090a3c8d00b00196286963b9so1631524pjc.3 for ; Tue, 31 Aug 2021 03:37:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=CGl/RjOOzzXlpDeA69Ku950YCkBGnktZEIYihkRI6vQ=; b=gwUN43qqsZ0EsCgXoYnM4vF6YZmTGFwNDUigCEPQSiHqFlc+pUMJVBca+24n1B5/W/ VMYli3FcPYK5iBSJy/bxGxlS/TIQ5HYsl4Mj4E5aqwlOFgzgRCagRblJ2hXVh8cE42KD 6IY3YuLv9nQEj5UxKPBzsnhJ/ZO3affOd7xDoz93JLMbrG0CLkfKzcVKAcwWg+mbaitm wKKLSXOE2D0caQwrOKHMeTi9AWaCoduPcZosCAh5kotRvEVZAQjOuySlJh+btT09oMob u1GX8qrF5BDPY3qNwRV1SIuhtMtP3AJroVUBjARZbojwBK1GEFOvq9lxvUEPs7yO/p/r 4sNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=CGl/RjOOzzXlpDeA69Ku950YCkBGnktZEIYihkRI6vQ=; b=tlf4d18hQ5/kWt0PvowBQ556pwCOSkf5qZtG3XB+LbxUFWtzDIJlwY466Ip8978+6/ hi5fZsZWiSfVCPsOJGm60fnp57w8cGr03ADWgoEOp4F+w8krouSjCTXUvS2C3oJMY+gg xbV+swwcfAw2u7bwP/cRPyFSLw1Mx9Us/c/7evZjZ67q7sh2OCGMqxbhCxAQXtlaunmM DcZBIgGmx4Qx7gcfTjYAEUeCOKLL08Hioi7ZZea2iyKK0iGNUnDBxWNwnCfJpc5cXhKP ppqFVSUbQoM9QasaXQeCKfQbPQ8JikmwrpzQrQeeLHOfBWJOkHRNv9CNTZegWlneK8Ow GDJQ== X-Gm-Message-State: AOAM531LwqDtqqDQU+0dWJhUm0KnxQA079Zw2sBESXOYOgp57yizjyko 0+fSsKHcYf4ZVU0DCsdLBf4+ X-Google-Smtp-Source: ABdhPJxZBaAKaCg5B5hOWetv2uR1h9HRTFdgLxl28e3BxBCqpUf5O0m6BuOIlSPTfEI2D1tYSt5mRQ== X-Received: by 2002:a17:90a:d590:: with SMTP id v16mr4584978pju.205.1630406249180; Tue, 31 Aug 2021 03:37:29 -0700 (PDT) Received: from localhost ([139.177.225.253]) by smtp.gmail.com with ESMTPSA id 17sm1823241pfm.172.2021.08.31.03.37.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Aug 2021 03:37:28 -0700 (PDT) From: Xie Yongji To: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, parav@nvidia.com, hch@infradead.org, christian.brauner@canonical.com, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com, dan.carpenter@oracle.com, joro@8bytes.org, gregkh@linuxfoundation.org, zhe.he@windriver.com, xiaodong.liu@intel.com, joe@perches.com, robin.murphy@arm.com, will@kernel.org, john.garry@huawei.com Cc: songmuchun@bytedance.com, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH v13 07/13] vhost-iotlb: Add an opaque pointer for vhost IOTLB Date: Tue, 31 Aug 2021 18:36:28 +0800 Message-Id: <20210831103634.33-8-xieyongji@bytedance.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210831103634.33-1-xieyongji@bytedance.com> References: <20210831103634.33-1-xieyongji@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add an opaque pointer for vhost IOTLB. And introduce vhost_iotlb_add_range_ctx() to accept it. Suggested-by: Jason Wang Signed-off-by: Xie Yongji Acked-by: Jason Wang --- drivers/vhost/iotlb.c | 20 ++++++++++++++++---- include/linux/vhost_iotlb.h | 3 +++ 2 files changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/vhost/iotlb.c b/drivers/vhost/iotlb.c index 0582079e4bcc..670d56c879e5 100644 --- a/drivers/vhost/iotlb.c +++ b/drivers/vhost/iotlb.c @@ -36,19 +36,21 @@ void vhost_iotlb_map_free(struct vhost_iotlb *iotlb, EXPORT_SYMBOL_GPL(vhost_iotlb_map_free); /** - * vhost_iotlb_add_range - add a new range to vhost IOTLB + * vhost_iotlb_add_range_ctx - add a new range to vhost IOTLB * @iotlb: the IOTLB * @start: start of the IOVA range * @last: last of IOVA range * @addr: the address that is mapped to @start * @perm: access permission of this range + * @opaque: the opaque pointer for the new mapping * * Returns an error last is smaller than start or memory allocation * fails */ -int vhost_iotlb_add_range(struct vhost_iotlb *iotlb, - u64 start, u64 last, - u64 addr, unsigned int perm) +int vhost_iotlb_add_range_ctx(struct vhost_iotlb *iotlb, + u64 start, u64 last, + u64 addr, unsigned int perm, + void *opaque) { struct vhost_iotlb_map *map; @@ -71,6 +73,7 @@ int vhost_iotlb_add_range(struct vhost_iotlb *iotlb, map->last = last; map->addr = addr; map->perm = perm; + map->opaque = opaque; iotlb->nmaps++; vhost_iotlb_itree_insert(map, &iotlb->root); @@ -80,6 +83,15 @@ int vhost_iotlb_add_range(struct vhost_iotlb *iotlb, return 0; } +EXPORT_SYMBOL_GPL(vhost_iotlb_add_range_ctx); + +int vhost_iotlb_add_range(struct vhost_iotlb *iotlb, + u64 start, u64 last, + u64 addr, unsigned int perm) +{ + return vhost_iotlb_add_range_ctx(iotlb, start, last, + addr, perm, NULL); +} EXPORT_SYMBOL_GPL(vhost_iotlb_add_range); /** diff --git a/include/linux/vhost_iotlb.h b/include/linux/vhost_iotlb.h index 6b09b786a762..2d0e2f52f938 100644 --- a/include/linux/vhost_iotlb.h +++ b/include/linux/vhost_iotlb.h @@ -17,6 +17,7 @@ struct vhost_iotlb_map { u32 perm; u32 flags_padding; u64 __subtree_last; + void *opaque; }; #define VHOST_IOTLB_FLAG_RETIRE 0x1 @@ -29,6 +30,8 @@ struct vhost_iotlb { unsigned int flags; }; +int vhost_iotlb_add_range_ctx(struct vhost_iotlb *iotlb, u64 start, u64 last, + u64 addr, unsigned int perm, void *opaque); int vhost_iotlb_add_range(struct vhost_iotlb *iotlb, u64 start, u64 last, u64 addr, unsigned int perm); void vhost_iotlb_del_range(struct vhost_iotlb *iotlb, u64 start, u64 last);