From: Oleg Nesterov <oleg@redhat.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Hugh Dickins <hughd@google.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Jan Kratochvil <jan.kratochvil@redhat.com>,
Sergio Durigan Junior <sergiodj@redhat.com>,
GDB Patches <gdb-patches@sourceware.org>,
Pedro Alves <palves@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: install_special_mapping && vm_pgoff (Was: vvar, gup && coredump)
Date: Mon, 16 Mar 2015 20:44:46 +0100 [thread overview]
Message-ID: <20150316194446.GA21791@redhat.com> (raw)
In-Reply-To: <CALCETrU9pLE2x3+vei1xw6B8uu4B33DOEzP03ue9DeS8sJhYUg@mail.gmail.com>
On 03/16, Andy Lutomirski wrote:
>
> Ick, you're probably right. For what it's worth, the vdso *seems* to
> be okay (on 64-bit only, and only if you don't poke at it too hard) if
> you mremap it in one piece. CRIU does that.
I need to run away till tomorrow, but looking at this code even if "one piece"
case doesn't look right if it was cow'ed. I'll verify tomorrow.
Oleg.
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next prev parent reply other threads:[~2015-03-16 20:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <878ufc9kau.fsf@redhat.com>
[not found] ` <20150305154827.GA9441@host1.jankratochvil.net>
[not found] ` <87zj7r5fpz.fsf@redhat.com>
[not found] ` <20150305205744.GA13165@host1.jankratochvil.net>
[not found] ` <20150311200052.GA22654@redhat.com>
[not found] ` <20150312143438.GA4338@redhat.com>
[not found] ` <CALCETrW5rmAHutzm_OwK2LTd_J0XByV3pvWGyW=AmC=v7rLfhQ@mail.gmail.com>
[not found] ` <20150312165423.GA10073@redhat.com>
[not found] ` <20150312174653.GA13086@redhat.com>
[not found] ` <20150316190154.GA18472@redhat.com>
2015-03-16 19:20 ` Andy Lutomirski
2015-03-16 19:44 ` Oleg Nesterov [this message]
2015-03-17 13:43 ` Oleg Nesterov
2015-03-18 1:44 ` Andy Lutomirski
2015-03-18 18:06 ` Oleg Nesterov
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