From: Dave Hansen <dave.hansen@intel.com>
To: Andy Lutomirski <luto@amacapital.net>,
"Ren, Qiaowei" <qiaowei.ren@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>
Subject: Re: [PATCH v6 02/10] x86, mpx: add MPX specific mmap interface
Date: Wed, 25 Jun 2014 14:45:05 -0700 [thread overview]
Message-ID: <53AB42E1.4090102@intel.com> (raw)
In-Reply-To: <CALCETrUD3L5Ta_v+NqgUrTk7Ok3zE=CRg0rqeKthOj2OORCLKQ@mail.gmail.com>
On 06/25/2014 02:05 PM, Andy Lutomirski wrote:
> Hmm. the memfd_create thing may be able to do this for you. If you
> created a per-mm memfd and mapped it, it all just might work.
memfd_create() seems to bring a fair amount of baggage along (the fd
part :) if all we want is a marker. Really, all we need is _a_ bit, and
some way to plumb to userspace the RSS values of VMAs with that bit set.
Creating and mmap()'ing a fd seems a rather roundabout way to get there.
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next prev parent reply other threads:[~2014-06-26 22:12 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1403084656-27284-1-git-send-email-qiaowei.ren@intel.com>
2014-06-18 14:41 ` [PATCH v6 00/10] Intel MPX support Dave Hansen
[not found] ` <1403084656-27284-3-git-send-email-qiaowei.ren@intel.com>
2014-06-23 19:49 ` [PATCH v6 02/10] x86, mpx: add MPX specific mmap interface Andy Lutomirski
2014-06-23 20:03 ` Dave Hansen
2014-06-23 20:06 ` Andy Lutomirski
2014-06-23 20:28 ` Dave Hansen
2014-06-23 21:04 ` Andy Lutomirski
2014-06-24 5:53 ` Ren, Qiaowei
2014-06-24 23:55 ` Andy Lutomirski
2014-06-25 1:40 ` Ren, Qiaowei
2014-06-25 21:04 ` Andy Lutomirski
2014-06-25 21:05 ` Andy Lutomirski
2014-06-25 21:45 ` Dave Hansen [this message]
2014-06-26 22:19 ` Andy Lutomirski
2014-06-26 22:58 ` Dave Hansen
2014-06-26 23:15 ` Andy Lutomirski
2014-06-27 0:19 ` Dave Hansen
2014-06-27 0:26 ` Andy Lutomirski
2014-06-27 17:34 ` Dave Hansen
2014-06-27 17:42 ` Dave Hansen
2014-06-27 18:57 ` Andy Lutomirski
2014-06-25 21:43 ` Dave Hansen
2014-06-24 2:53 ` Ren, Qiaowei
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