Date: Wed, 25 May 2011 23:47:37 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Tony Luck <tony.luck@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "Huang, Ying" <ying.huang@intel.com>, Andi Kleen <andi@firstfloor.org>,
        Borislav Petkov <bp@alien8.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Mauro Carvalho Chehab <mchehab@redhat.com>,
        =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker <fweisbec@gmail.com>
Subject: Re: [RFC 0/9] mce recovery for Sandy Bridge server
Message-ID: <20110525214737.GA8955@elte.hu>
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* Tony Luck <tony.luck@intel.com> wrote:

> 2011/5/25 Ingo Molnar <mingo@elte.hu>:
>
> > Btw., the SIGKILL logic is probably overcomplicated: when it's 
> > clear that user-space can not recover why not do a do_exit() and 
> > be done with it? As long as it's called from a syscall level 
> > codepath and no locks/resources are held do_exit() can be called.
> 
> There is no SIGKILL  [...]

there is one here:

mm/memory-failure.c::kill_procs_ao()

                                force_sig(SIGKILL, tk->tsk);

Which can be reached from memory_failure() in certain (justified) 
circumstances.

Thanks,

	Ingo
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