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Re: [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model

From Jiri Kosina <jikos@kernel.org>
Newsgroups linux.kernel
Subject Re: [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model
Date 2016-04-07 17:50 +0200
Message-ID <rlklX-65f-1@gated-at.bofh.it> (permalink)
References <rgFKp-6zA-3@gated-at.bofh.it> <rlh4K-3D1-9@gated-at.bofh.it> <rljJg-5O0-15@gated-at.bofh.it>
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On Thu, 7 Apr 2016, Josh Poimboeuf wrote:

> > > - try ftrace handler switching idea from v1 cover letter
[ ... ]
> > We probably should not check the stack in atomic context
> 
> Can you elaborate why not?

I admittedly forgot what the "ftrace handler switching idea" is, and am 
not sure where exactly to look for it (could you please point it to me so 
that I can refresh my memory), but generally we can't assume that a memory 
holding stack of a sleeping task hasn't been reclaimed and wouldn't need 
to have been paged in again.

-- 
Jiri Kosina
SUSE Labs

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Thread

Re: [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model Petr Mladek <pmladek@suse.com> - 2016-04-07 14:20 +0200
  Re: [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model Josh Poimboeuf <jpoimboe@redhat.com> - 2016-04-07 17:10 +0200
    Re: [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model Jiri Kosina <jikos@kernel.org> - 2016-04-07 17:50 +0200
      Re: [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model Josh Poimboeuf <jpoimboe@redhat.com> - 2016-04-07 20:10 +0200
        Re: [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model Jiri Kosina <jikos@kernel.org> - 2016-04-07 20:40 +0200

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