From: Dmitry Safonov <dsafonov@virtuozzo.com>
To: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: <linux-kernel@vger.kernel.org>, <mingo@redhat.com>,
<luto@amacapital.net>, <tglx@linutronix.de>, <hpa@zytor.com>,
<x86@kernel.org>, <0x7f454c46@gmail.com>, <oleg@redhat.com>,
<rostedt@goodmis.org>, <viro@zeniv.linux.org.uk>
Subject: Re: [RFC 1/3] x86/vdso: create vdso file, use it for mapping
Date: Mon, 29 Aug 2016 12:18:08 +0300 [thread overview]
Message-ID: <8bcf014e-f2a6-dcde-e37e-194be3537784@virtuozzo.com> (raw)
In-Reply-To: <20160828201429.GV19647@uranus>
On 08/28/2016 11:14 PM, Cyrill Gorcunov wrote:
> On Thu, Aug 25, 2016 at 06:21:08PM +0300, Dmitry Safonov wrote:
>> I added here a new in-kernel fs with ramfs-like options.
>> Created vdso file in this fs (yet for testing, only 64-bit vdso).
>> Mapped this file to process's mm on setup_additional_pages.
>> Just for testing purpose it's done only for specific UID.
>>
>> Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
>
Hi Cyrill,
> Dmitry, could you clarify please, why "old way" remains in the code?
> Even if RFC is not the new approach is supposing to completely remove
> old one? Or I miss something obvious?
Well, I left it for RFC, I think on post-RFC we can leave it as
cmd-param (alike vdso{64,32}_enabled) so it could be easily disabled if
it brokes something in userspace. I guess, that's preferred way to
introduce something like that.
--
Dmitry
next prev parent reply other threads:[~2016-08-29 9:53 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-25 15:21 [RFC 0/3] Put vdso in ramfs-like filesystem (vdsofs) Dmitry Safonov
2016-08-25 15:21 ` [RFC 1/3] x86/vdso: create vdso file, use it for mapping Dmitry Safonov
2016-08-25 19:49 ` Dmitry Safonov
2016-08-25 20:05 ` Dmitry Safonov
2016-08-28 20:14 ` Cyrill Gorcunov
2016-08-29 9:18 ` Dmitry Safonov [this message]
2016-08-29 9:28 ` Andy Lutomirski
2016-08-29 9:50 ` Dmitry Safonov
2016-08-30 14:58 ` Andy Lutomirski
2016-09-03 0:08 ` Al Viro
2016-08-30 14:33 ` Oleg Nesterov
2016-08-30 14:53 ` Dmitry Safonov
2016-09-03 0:13 ` Al Viro
2016-09-03 0:20 ` Al Viro
2016-09-03 7:32 ` Dmitry Safonov
2016-08-25 15:21 ` [RFC 2/3] uprobe: drop isdigit() check in create_trace_uprobe Dmitry Safonov
2016-08-29 22:58 ` Steven Rostedt
2016-08-29 22:59 ` Steven Rostedt
2016-08-29 23:01 ` Dmitry Safonov
2016-08-30 14:37 ` Oleg Nesterov
2016-08-30 21:15 ` Steven Rostedt
2016-08-31 12:07 ` Oleg Nesterov
2016-08-30 14:57 ` Srikar Dronamraju
2016-08-25 15:21 ` [RFC 3/3] uprobe: add vdso support Dmitry Safonov
2016-08-25 20:49 ` [RFC 0/3] Put vdso in ramfs-like filesystem (vdsofs) H. Peter Anvin
2016-08-25 22:53 ` Dmitry Safonov
2016-08-25 23:00 ` H. Peter Anvin
2016-08-26 11:16 ` Dmitry Safonov
2016-08-26 14:32 ` Andy Lutomirski
2016-08-26 14:42 ` Dmitry Safonov
2016-08-26 14:44 ` Dmitry Safonov
2016-09-21 0:22 ` H. Peter Anvin
2016-09-21 0:32 ` H. Peter Anvin
2016-09-21 0:54 ` Andy Lutomirski
2016-09-21 1:07 ` H. Peter Anvin
2016-09-21 1:17 ` H. Peter Anvin
2016-09-21 6:39 ` Andy Lutomirski
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