From mboxrd@z Thu Jan  1 00:00:00 1970
From: Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PULL] vhost: cleanups and fixes
Date: Fri, 2 Nov 2018 11:02:35 -0700
Message-ID: <CAHk-=wjAvx_rWKct5RtqRrVEgNxrFF=1qQwkz+AegDvd4yXW=g@mail.gmail.com>
References: <20181101171938-mutt-send-email-mst@kernel.org>
 <CAGXu5jJ0HgV2qN=wohEgro6ixqXHOHBTsvS5a9Dcpz8gxVo3bA@mail.gmail.com>
 <CAHk-=wicvws38JqzVF6oNEZ0jGzP6RecR6yAGtyzX3AkoJ321g@mail.gmail.com>
 <20181102114635.hi3q53kzmz4qljsf@lakrids.cambridge.arm.com>
 <20181102083018-mutt-send-email-mst@kernel.org> <CAHk-=wh_bQK5zs+CwQ5eyodq4sQT0eOPp60qzvVL2_EtgETP-g@mail.gmail.com>
 <20181102122937-mutt-send-email-mst@kernel.org> <CAHk-=wibzqo7C+mS+BgZxRbgdWe2w5F39EhuFUhZUxvotoGLuA@mail.gmail.com>
 <20181102131334-mutt-send-email-mst@kernel.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Cc: mark.rutland@arm.com, Kees Cook <keescook@chromium.org>,
        kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
        netdev@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        bijan.mottahedeh@oracle.com, gedwards@ddn.com, joe@perches.com,
        lenaic@lhuard.fr, liang.z.li@intel.com, mhocko@kernel.org,
        mhocko@suse.com, stefanha@redhat.com, wei.w.wang@intel.com,
        jasowang@redhat.com
To: mst@redhat.com
Return-path: <netdev-owner@vger.kernel.org>
Received: from mail-lf1-f54.google.com ([209.85.167.54]:33222 "EHLO
        mail-lf1-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1726700AbeKCDK6 (ORCPT
        <rfc822;netdev@vger.kernel.org>); Fri, 2 Nov 2018 23:10:58 -0400
Received: by mail-lf1-f54.google.com with SMTP id i26so1939795lfc.0
        for <netdev@vger.kernel.org>; Fri, 02 Nov 2018 11:02:55 -0700 (PDT)
Received: from mail-lj1-f182.google.com (mail-lj1-f182.google.com. [209.85.208.182])
        by smtp.gmail.com with ESMTPSA id f11sm356423lfi.12.2018.11.02.11.02.51
        for <netdev@vger.kernel.org>
        (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Fri, 02 Nov 2018 11:02:52 -0700 (PDT)
Received: by mail-lj1-f182.google.com with SMTP id u6-v6so2526702ljd.1
        for <netdev@vger.kernel.org>; Fri, 02 Nov 2018 11:02:51 -0700 (PDT)
In-Reply-To: <20181102131334-mutt-send-email-mst@kernel.org>
Sender: netdev-owner@vger.kernel.org
List-ID: <netdev.vger.kernel.org>

On Fri, Nov 2, 2018 at 10:21 AM Michael S. Tsirkin <mst@redhat.com> wrote:
>
> it seems that it depends on current not on the active mm.

Yes, see my other suggestion to just fix "use_mm()" to update the address range.

Would you mind testing that?

Because that would seem to be the *much* less error-prone model..

           Linus