From: Linus Torvalds <torvalds@linux-foundation.org>
To: Christian Brauner <brauner@kernel.org>
Cc: Thorsten Leemhuis <linux@leemhuis.info>,
Mike Christie <michael.christie@oracle.com>,
oleg@redhat.com, nicolas.dichtel@6wind.com, axboe@kernel.dk,
ebiederm@xmission.com, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org, mst@redhat.com,
sgarzare@redhat.com, jasowang@redhat.com, stefanha@redhat.com,
Linux kernel regressions list <regressions@lists.linux.dev>,
hch@infradead.org, konrad.wilk@oracle.com
Subject: Re: [RFC PATCH 0/8] vhost_tasks: Use CLONE_THREAD/SIGHAND
Date: Thu, 1 Jun 2023 08:26:29 -0400 [thread overview]
Message-ID: <CAHk-=wgQAgHh_rjiFaAO+Y_mRQvp4SJ7SQ7niVKj89hDmh8Q_A@mail.gmail.com> (raw)
In-Reply-To: <20230601-herzallerliebst-dschungel-4515db351a0c@brauner>
On Thu, Jun 1, 2023 at 6:47 AM Christian Brauner <brauner@kernel.org> wrote:
>
> @Mike, do you want to prepare an updated version of the temporary fix.
> If @Linus prefers to just apply it directly he can just grab it from the
> list rather than delaying it. Make sure to grab a Co-developed-by line
> on this, @Mike.
Yeah, let's apply the known "fix the immediate regression" patch wrt
vhost ps output and the freezer. That gets rid of the regression.
I think that we can - and should - then treat the questions about core
dumping and execve as separate issues.
vhost wouldn't have done execve since it's nonsensical and has never
worked anyway since it always left the old mm ref behind, and
similarly core dumping has never been an issue.
So on those things we don't have any "semantic" issues, we just need
to make sure we don't do crazy things like hang uninterruptibly.
Linus
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Christian Brauner <brauner@kernel.org>
Cc: axboe@kernel.dk,
Linux kernel regressions list <regressions@lists.linux.dev>,
mst@redhat.com, linux-kernel@vger.kernel.org,
konrad.wilk@oracle.com, Thorsten Leemhuis <linux@leemhuis.info>,
oleg@redhat.com, hch@infradead.org, ebiederm@xmission.com,
stefanha@redhat.com, nicolas.dichtel@6wind.com,
virtualization@lists.linux-foundation.org
Subject: Re: [RFC PATCH 0/8] vhost_tasks: Use CLONE_THREAD/SIGHAND
Date: Thu, 1 Jun 2023 08:26:29 -0400 [thread overview]
Message-ID: <CAHk-=wgQAgHh_rjiFaAO+Y_mRQvp4SJ7SQ7niVKj89hDmh8Q_A@mail.gmail.com> (raw)
In-Reply-To: <20230601-herzallerliebst-dschungel-4515db351a0c@brauner>
On Thu, Jun 1, 2023 at 6:47 AM Christian Brauner <brauner@kernel.org> wrote:
>
> @Mike, do you want to prepare an updated version of the temporary fix.
> If @Linus prefers to just apply it directly he can just grab it from the
> list rather than delaying it. Make sure to grab a Co-developed-by line
> on this, @Mike.
Yeah, let's apply the known "fix the immediate regression" patch wrt
vhost ps output and the freezer. That gets rid of the regression.
I think that we can - and should - then treat the questions about core
dumping and execve as separate issues.
vhost wouldn't have done execve since it's nonsensical and has never
worked anyway since it always left the old mm ref behind, and
similarly core dumping has never been an issue.
So on those things we don't have any "semantic" issues, we just need
to make sure we don't do crazy things like hang uninterruptibly.
Linus
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Virtualization mailing list
Virtualization@lists.linux-foundation.org
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next prev parent reply other threads:[~2023-06-01 12:26 UTC|newest]
Thread overview: 176+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-02 23:25 [PATCH v11 0/8] Use copy_process in vhost layer Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-02-02 23:25 ` [PATCH v11 1/8] fork: Make IO worker options flag based Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-02-03 0:14 ` Linus Torvalds
2023-02-03 0:14 ` Linus Torvalds
2023-02-02 23:25 ` [PATCH v11 2/8] fork/vm: Move common PF_IO_WORKER behavior to new flag Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-02-02 23:25 ` [PATCH v11 3/8] fork: add USER_WORKER flag to not dup/clone files Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-02-03 0:16 ` Linus Torvalds
2023-02-03 0:16 ` Linus Torvalds
2023-02-02 23:25 ` [PATCH v11 4/8] fork: Add USER_WORKER flag to ignore signals Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-02-03 0:19 ` Linus Torvalds
2023-02-03 0:19 ` Linus Torvalds
2023-02-05 16:06 ` Mike Christie
2023-02-05 16:06 ` Mike Christie
2023-02-02 23:25 ` [PATCH v11 5/8] fork: allow kernel code to call copy_process Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-02-02 23:25 ` [PATCH v11 6/8] vhost_task: Allow vhost layer to use copy_process Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-02-03 0:43 ` Linus Torvalds
2023-02-03 0:43 ` Linus Torvalds
2023-02-02 23:25 ` [PATCH v11 7/8] vhost: move worker thread fields to new struct Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-02-02 23:25 ` [PATCH v11 8/8] vhost: use vhost_tasks for worker threads Mike Christie
2023-02-02 23:25 ` Mike Christie
2023-05-05 13:40 ` Nicolas Dichtel
2023-05-05 18:22 ` Linus Torvalds
2023-05-05 18:22 ` Linus Torvalds
2023-05-05 22:37 ` Mike Christie
2023-05-05 22:37 ` Mike Christie
2023-05-06 1:53 ` Linus Torvalds
2023-05-06 1:53 ` Linus Torvalds
2023-05-08 17:13 ` Christian Brauner
2023-05-09 8:09 ` Nicolas Dichtel
2023-05-09 8:17 ` Nicolas Dichtel
2023-05-13 12:39 ` Thorsten Leemhuis
2023-05-13 12:39 ` Thorsten Leemhuis
2023-05-13 15:08 ` Linus Torvalds
2023-05-13 15:08 ` Linus Torvalds
2023-05-15 14:23 ` Christian Brauner
2023-05-15 15:44 ` Linus Torvalds
2023-05-15 15:44 ` Linus Torvalds
2023-05-15 15:52 ` Jens Axboe
2023-05-15 15:52 ` Jens Axboe
2023-05-15 15:54 ` Linus Torvalds
2023-05-15 15:54 ` Linus Torvalds
2023-05-15 17:23 ` Linus Torvalds
2023-05-15 17:23 ` Linus Torvalds
2023-05-15 15:56 ` Linus Torvalds
2023-05-15 15:56 ` Linus Torvalds
2023-05-15 22:23 ` Mike Christie
2023-05-15 22:23 ` Mike Christie
2023-05-15 22:54 ` Linus Torvalds
2023-05-15 22:54 ` Linus Torvalds
2023-05-16 3:53 ` Mike Christie
2023-05-16 3:53 ` Mike Christie
2023-05-16 13:18 ` Oleg Nesterov
2023-05-16 13:18 ` Oleg Nesterov
2023-05-16 13:40 ` Oleg Nesterov
2023-05-16 13:40 ` Oleg Nesterov
2023-05-16 15:56 ` Eric W. Biederman
2023-05-16 15:56 ` Eric W. Biederman
2023-05-16 18:37 ` Oleg Nesterov
2023-05-16 18:37 ` Oleg Nesterov
2023-05-16 20:12 ` Eric W. Biederman
2023-05-16 20:12 ` Eric W. Biederman
2023-05-17 17:09 ` Oleg Nesterov
2023-05-17 17:09 ` Oleg Nesterov
2023-05-17 18:22 ` Mike Christie
2023-05-17 18:22 ` Mike Christie
2023-05-16 8:39 ` Christian Brauner
2023-05-16 16:24 ` Mike Christie
2023-05-16 16:24 ` Mike Christie
2023-05-16 16:44 ` Christian Brauner
2023-05-19 12:15 ` [RFC PATCH 0/8] vhost_tasks: Use CLONE_THREAD/SIGHAND Christian Brauner
2023-06-01 7:58 ` Thorsten Leemhuis
2023-06-01 7:58 ` Thorsten Leemhuis
2023-06-01 10:18 ` Nicolas Dichtel
2023-06-01 10:47 ` Christian Brauner
2023-06-01 11:29 ` Thorsten Leemhuis
2023-06-01 11:29 ` Thorsten Leemhuis
2023-06-01 12:26 ` Linus Torvalds [this message]
2023-06-01 12:26 ` Linus Torvalds
2023-06-01 16:10 ` Mike Christie
2023-06-01 16:10 ` Mike Christie
2023-05-16 14:06 ` [PATCH v11 8/8] vhost: use vhost_tasks for worker threads Linux regression tracking #adding (Thorsten Leemhuis)
2023-05-26 9:03 ` Linux regression tracking #update (Thorsten Leemhuis)
2023-06-02 11:38 ` Thorsten Leemhuis
2023-07-20 13:06 ` Michael S. Tsirkin
2023-07-20 13:06 ` Michael S. Tsirkin
2023-07-23 4:03 ` michael.christie
2023-07-23 4:03 ` michael.christie
2023-07-23 9:31 ` Michael S. Tsirkin
2023-07-23 9:31 ` Michael S. Tsirkin
2023-08-10 18:57 ` Michael S. Tsirkin
2023-08-10 18:57 ` Michael S. Tsirkin
2023-08-11 18:51 ` Mike Christie
2023-08-11 18:51 ` Mike Christie
2023-08-13 19:01 ` Michael S. Tsirkin
2023-08-13 19:01 ` Michael S. Tsirkin
2023-08-14 3:13 ` michael.christie
2023-08-14 3:13 ` michael.christie
2023-02-07 8:19 ` [PATCH v11 0/8] Use copy_process in vhost layer Christian Brauner
2023-05-18 0:09 [RFC PATCH 0/8] vhost_tasks: Use CLONE_THREAD/SIGHAND Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 0:09 ` [RFC PATCH 1/8] signal: Dequeue SIGKILL even if SIGNAL_GROUP_EXIT/group_exec_task is set Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 2:34 ` Eric W. Biederman
2023-05-18 2:34 ` Eric W. Biederman
2023-05-18 3:49 ` Eric W. Biederman
2023-05-18 3:49 ` Eric W. Biederman
2023-05-18 15:21 ` Mike Christie
2023-05-18 15:21 ` Mike Christie
2023-05-18 16:25 ` Oleg Nesterov
2023-05-18 16:25 ` Oleg Nesterov
2023-05-18 16:42 ` Mike Christie
2023-05-18 16:42 ` Mike Christie
2023-05-18 17:04 ` Oleg Nesterov
2023-05-18 17:04 ` Oleg Nesterov
2023-05-18 18:28 ` Eric W. Biederman
2023-05-18 18:28 ` Eric W. Biederman
2023-05-18 22:57 ` Mike Christie
2023-05-18 22:57 ` Mike Christie
2023-05-19 4:16 ` Eric W. Biederman
2023-05-19 4:16 ` Eric W. Biederman
2023-05-19 23:24 ` Mike Christie
2023-05-19 23:24 ` Mike Christie
2023-05-22 13:30 ` Oleg Nesterov
2023-05-22 13:30 ` Oleg Nesterov
2023-05-18 8:08 ` Christian Brauner
2023-05-18 15:27 ` Mike Christie
2023-05-18 15:27 ` Mike Christie
2023-05-18 17:07 ` Christian Brauner
2023-05-18 18:08 ` Oleg Nesterov
2023-05-18 18:08 ` Oleg Nesterov
2023-05-18 18:12 ` Christian Brauner
2023-05-18 18:23 ` Oleg Nesterov
2023-05-18 18:23 ` Oleg Nesterov
2023-05-18 0:09 ` [RFC PATCH 2/8] vhost/vhost_task: Hook vhost layer into signal handler Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 0:16 ` Linus Torvalds
2023-05-18 0:16 ` Linus Torvalds
2023-05-18 1:01 ` Mike Christie
2023-05-18 1:01 ` Mike Christie
2023-05-18 8:16 ` Christian Brauner
2023-05-18 0:09 ` [RFC PATCH 3/8] fork/vhost_task: Switch to CLONE_THREAD and CLONE_SIGHAND Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 8:18 ` Christian Brauner
2023-05-18 0:09 ` [RFC PATCH 4/8] vhost-net: Move vhost_net_open Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 0:09 ` [RFC PATCH 5/8] vhost: Add callback that stops new work and waits on running ones Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 14:18 ` Christian Brauner
2023-05-18 15:03 ` Mike Christie
2023-05-18 15:03 ` Mike Christie
2023-05-18 15:09 ` Christian Brauner
2023-05-18 18:38 ` Eric W. Biederman
2023-05-18 18:38 ` Eric W. Biederman
2023-05-18 0:09 ` [RFC PATCH 6/8] vhost-scsi: Add callback to stop and wait on works Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 0:09 ` [RFC PATCH 7/8] vhost-net: " Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 0:09 ` [RFC PATCH 8/8] fork/vhost_task: remove no_files Mike Christie
2023-05-18 0:09 ` Mike Christie
2023-05-18 1:04 ` Mike Christie
2023-05-18 1:04 ` Mike Christie
2023-05-18 12:31 ` kernel test robot
2023-05-18 15:30 ` kernel test robot
2023-05-18 23:14 ` kernel test robot
2023-05-19 7:26 ` kernel test robot
2023-05-18 8:25 ` [RFC PATCH 0/8] vhost_tasks: Use CLONE_THREAD/SIGHAND Christian Brauner
2023-05-18 8:40 ` Christian Brauner
2023-05-18 14:30 ` Christian Brauner
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