linux-kernel - Re: [PATCH v3 0/3] livepatch,sched: Add livepatch task switching to cond

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <alpine.LSU.2.21.2303301810250.24187@pobox.suse.cz>
Date:   Thu, 30 Mar 2023 18:11:09 +0200 (CEST)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Josh Poimboeuf <jpoimboe@...nel.org>
cc:     live-patching@...r.kernel.org, linux-kernel@...r.kernel.org,
        Seth Forshee <sforshee@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Song Liu <song@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Petr Mladek <pmladek@...e.com>,
        Joe Lawrence <joe.lawrence@...hat.com>,
        Jiri Kosina <jikos@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Rik van Riel <riel@...riel.com>
Subject: Re: [PATCH v3 0/3] livepatch,sched: Add livepatch task switching to
 cond_resched()

On Fri, 24 Feb 2023, Josh Poimboeuf wrote:

> v3:
> - Add barriers (pmladek)
> - Update comments
> 
> v2:
> - Avoid calling klp_cond_resched_disable() in klp_cancel_transition()
> - Fix race in klp_reverse_transition()
> 
> Fix patching stalls caused by busy kthreads.
> 
> Josh Poimboeuf (3):
>   livepatch: Skip task_call_func() for current task
>   livepatch,sched: Add livepatch task switching to cond_resched()
>   vhost: Fix livepatch timeouts in vhost_worker()
> 
>  drivers/vhost/vhost.c           |   3 +-
>  include/linux/livepatch.h       |   1 +
>  include/linux/livepatch_sched.h |  29 ++++++++
>  include/linux/sched.h           |  20 ++++--
>  kernel/livepatch/core.c         |   1 +
>  kernel/livepatch/transition.c   | 113 +++++++++++++++++++++++++++-----
>  kernel/sched/core.c             |  64 +++++++++++++++---
>  7 files changed, 200 insertions(+), 31 deletions(-)
>  create mode 100644 include/linux/livepatch_sched.h

Late, so just recording it here...

Acked-by: Miroslav Benes <mbenes@...e.cz>

Thanks for improving the situation, Josh.

M