From patchwork Tue Feb 23 11:50:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yongji Xie X-Patchwork-Id: 12100231 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=-16.7 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,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 82431C433E0 for ; Tue, 23 Feb 2021 11:55:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 559FC61481 for ; Tue, 23 Feb 2021 11:55:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232587AbhBWLzd (ORCPT ); Tue, 23 Feb 2021 06:55:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232480AbhBWLxf (ORCPT ); Tue, 23 Feb 2021 06:53:35 -0500 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5803CC0617A7 for ; Tue, 23 Feb 2021 03:51:56 -0800 (PST) Received: by mail-pj1-x1031.google.com with SMTP id t5so1514214pjd.0 for ; Tue, 23 Feb 2021 03:51:56 -0800 (PST) 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=H5pYvaPbrMIxKLcyQlCmLi7ENSgIrcUqDHSwAfTT3Bc=; b=uAbkaiDMGWc604JHIcQVDYByzZVoEeGu7SyJIqA0IhjlL+MTB568yxSLXt4vGg++63 RKSY0vXfFcx5CJXdmX7Ubrhh8y+3weWqv5SxMYCVRr7vO0sP1C1cdZL+AH5TIa90X5bw g8w7cK5dlINPEC4KKty6Mat0XtnkZKbWzzH2mWEdd18i49aeHVQfaDps0jaC4iNIoRav HMQ915J3+frT0EatXgB956DhFZmFaGMpLi64fVURY2g4g8ccO2aXBSTwbLqpffV8o8VG vdqp95CdngZmGGW3AwSs+fl6DZWyVet89x1G3PyGbco4XcwKhwHKNJIeAsE+n/Fy7RGt 1tig== 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=H5pYvaPbrMIxKLcyQlCmLi7ENSgIrcUqDHSwAfTT3Bc=; b=Szgw0izpoWcyUDBjWxIdlYgztCpJmqfes0/krBzJW4amy1Lr6k4/g5wP+DSY1rB0H8 sU5ToPzlQ2vcId7duHRY7kjkuqZP/+6+c+T6JqTi7BPsJu64QfQaaD+umTK1qFaj/koE vMwYb0H+8ZCpr96CZd6iNshw4gJqmgzhkBUVi6c4ZcdbY9o/WvCkZ5kjLfOuVpYnYTvU beZdZLDiXQHn1wmGAvu8O1T0r+wmdrsXJNMkr2ZCHWmo7BeXPqdL92SJWpzEAZteJcBb jzY1/fC9pJmQ0aXNjUwuGjE5ycB3vJI4BNPg5Tw4XyntrLv82G87jmawv3cxK+zj2tY1 eQ/g== X-Gm-Message-State: AOAM532BQak+GbAXacTdO+gybHBTphbxboO9hgdBj+lr1O5hiiDbTJP3 qyOPSyFQo3+GbYBringjYeXm X-Google-Smtp-Source: ABdhPJxIRjqlLohL2qQdhCvXk/w+oPLa9KjPD7KvhuRCAkItq9fp2WG4P28iah9KVEQFzIO4znt1bQ== X-Received: by 2002:a17:90a:4092:: with SMTP id l18mr28912229pjg.1.1614081115991; Tue, 23 Feb 2021 03:51:55 -0800 (PST) Received: from localhost ([139.177.225.253]) by smtp.gmail.com with ESMTPSA id l74sm11894608pga.86.2021.02.23.03.51.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Feb 2021 03:51:55 -0800 (PST) From: Xie Yongji To: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, parav@nvidia.com, bob.liu@oracle.com, hch@infradead.org, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net Cc: virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org Subject: [RFC v4 03/11] vhost-iotlb: Add an opaque pointer for vhost IOTLB Date: Tue, 23 Feb 2021 19:50:40 +0800 Message-Id: <20210223115048.435-4-xieyongji@bytedance.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210223115048.435-1-xieyongji@bytedance.com> References: <20210223115048.435-1-xieyongji@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-State: RFC 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 0fd3f87e913c..5c99e1112cbb 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);