From owner-svn-src-stable@freebsd.org Fri Mar 30 18:48:26 2018 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 29B7FF567BB; Fri, 30 Mar 2018 18:48:26 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id D197777481; Fri, 30 Mar 2018 18:48:25 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id B39CA4CCA; Fri, 30 Mar 2018 18:48:25 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w2UImP4K083560; Fri, 30 Mar 2018 18:48:25 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w2UImP16083559; Fri, 30 Mar 2018 18:48:25 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201803301848.w2UImP16083559@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Fri, 30 Mar 2018 18:48:25 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r331795 - stable/11/sys/dev/mlx5/mlx5_ib X-SVN-Group: stable-11 X-SVN-Commit-Author: hselasky X-SVN-Commit-Paths: stable/11/sys/dev/mlx5/mlx5_ib X-SVN-Commit-Revision: 331795 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Mar 2018 18:48:26 -0000 Author: hselasky Date: Fri Mar 30 18:48:25 2018 New Revision: 331795 URL: https://svnweb.freebsd.org/changeset/base/331795 Log: MFC r330597: Disable unsupported disassociate ucontext functionality in mlx5ib(4). Sponsored by: Mellanox Technologies Modified: stable/11/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c ============================================================================== --- stable/11/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c Fri Mar 30 18:47:33 2018 (r331794) +++ stable/11/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c Fri Mar 30 18:48:25 2018 (r331795) @@ -1242,62 +1242,6 @@ static int mlx5_ib_set_vma_data(struct vm_area_struct return 0; } -static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) -{ - int ret; - struct vm_area_struct *vma; - struct mlx5_ib_vma_private_data *vma_private, *n; - struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); - struct task_struct *owning_process = NULL; - struct mm_struct *owning_mm = NULL; - - owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID); - if (!owning_process) - return; - - owning_mm = get_task_mm(owning_process); - if (!owning_mm) { - pr_info("no mm, disassociate ucontext is pending task termination\n"); - while (1) { - put_task_struct(owning_process); - usleep_range(1000, 2000); - owning_process = get_pid_task(ibcontext->tgid, - PIDTYPE_PID); - if (!owning_process /* || - owning_process->state == TASK_DEAD */) { - pr_info("disassociate ucontext done, task was terminated\n"); - /* in case task was dead need to release the - * task struct. - */ - if (owning_process) - put_task_struct(owning_process); - return; - } - } - } - - /* need to protect from a race on closing the vma as part of - * mlx5_ib_vma_close. - */ - down_read(&owning_mm->mmap_sem); - list_for_each_entry_safe(vma_private, n, &context->vma_private_list, - list) { - vma = vma_private->vma; - ret = zap_vma_ptes(vma, vma->vm_start, - PAGE_SIZE); - WARN_ONCE(ret, "%s: zap_vma_ptes failed", __func__); - /* context going to be destroyed, should - * not access ops any more. - */ - vma->vm_ops = NULL; - list_del(&vma_private->list); - kfree(vma_private); - } - up_read(&owning_mm->mmap_sem); - mmput(owning_mm); - put_task_struct(owning_process); -} - static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd) { switch (cmd) { @@ -3057,8 +3001,6 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev) dev->ib_dev.get_vf_stats = mlx5_ib_get_vf_stats; dev->ib_dev.set_vf_guid = mlx5_ib_set_vf_guid; } - - dev->ib_dev.disassociate_ucontext = mlx5_ib_disassociate_ucontext; mlx5_ib_internal_fill_odp_caps(dev);