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From: Dave Hansen <dave-gkUM19QKKo4@public.gmane.org>
To: Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
Cc: "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org"
	<linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
	X86 ML <x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Linux API <linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-arch <linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Andrea Arcangeli
	<aarcange-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Andrew Morton
	<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
	Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>,
	"Kirill A. Shutemov"
	<kirill.shutemov-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
	Naoya Horiguchi
	<n-horiguchi-PaJj6Psr51x8UrSeD/g0lQ@public.gmane.org>
Subject: Re: [PATCH 00/34] x86: Memory Protection Keys (v5)
Date: Fri, 4 Dec 2015 15:38:41 -0800	[thread overview]
Message-ID: <56622401.20001@sr71.net> (raw)
In-Reply-To: <CALCETrXwVb99hAvqR2o54aPwtpr8oubROtiRt45SiYRfUTAxCw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

On 12/04/2015 03:31 PM, Andy Lutomirski wrote:
> On Thu, Dec 3, 2015 at 5:14 PM, Dave Hansen <dave-gkUM19QKKo4@public.gmane.org> wrote:
>> Memory Protection Keys for User pages is a CPU feature which will
>> first appear on Skylake Servers, but will also be supported on
>> future non-server parts.  It provides a mechanism for enforcing
>> page-based protections, but without requiring modification of the
>> page tables when an application changes protection domains.  See
>> the Documentation/ patch for more details.
> 
> What, if anything, happened to the signal handling parts?

Patches 12 and 13 contain most of it:

	x86, pkeys: fill in pkey field in siginfo
	signals, pkeys: notify userspace about protection key faults	

I decided to just not try to preserve the pkey_get/set() semantics
across entering and returning from signals, fwiw.

> Also, do you have a git tree for this somewhere?  I can't actually
> enable it (my laptop, while very shiny, is not a Skylake server), but
> I can poke around a bit.

http://git.kernel.org/cgit/linux/kernel/git/daveh/x86-pkeys.git/

Thanks for taking a look!

  parent reply	other threads:[~2015-12-04 23:38 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-04  1:14 [PATCH 00/34] x86: Memory Protection Keys (v5) Dave Hansen
2015-12-04  1:14 ` [PATCH 24/34] mm, multi-arch: pass a protection key in to calc_vm_flag_bits() Dave Hansen
2015-12-04  1:15 ` [PATCH 26/34] mm: implement new mprotect_key() system call Dave Hansen
     [not found]   ` <20151204011500.69487A6C-LXbPSdftPKxrdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2015-12-05  6:50     ` Michael Kerrisk (man-pages)
     [not found]       ` <5662894B.7090903-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-12-07 16:44         ` Dave Hansen
2015-12-09 11:08           ` Michael Kerrisk (man-pages)
2015-12-09 15:48             ` Dave Hansen
     [not found]               ` <56684D3B.5050805-gkUM19QKKo4@public.gmane.org>
2015-12-09 16:45                 ` Michael Kerrisk (man-pages)
     [not found]                   ` <CAKgNAkiZHny4amNcamN+q6pxdanG9aMMA4H_pekA7+RDuoUvEA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-09 17:05                     ` Dave Hansen
2015-12-11 20:13                       ` Michael Kerrisk (man-pages)
2015-12-04  1:15 ` [PATCH 28/34] x86: wire up " Dave Hansen
     [not found]   ` <20151204011503.2A095839-LXbPSdftPKxrdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2015-12-08 18:44     ` Thomas Gleixner
2015-12-08 19:06       ` Dave Hansen
     [not found]         ` <56672A50.4010801-gkUM19QKKo4@public.gmane.org>
2015-12-08 20:38           ` Thomas Gleixner
2015-12-04  1:15 ` [PATCH 31/34] x86, pkeys: allocation/free syscalls Dave Hansen
2015-12-04  1:15 ` [PATCH 32/34] x86, pkeys: add pkey set/get syscalls Dave Hansen
2015-12-04 23:31 ` [PATCH 00/34] x86: Memory Protection Keys (v5) Andy Lutomirski
     [not found]   ` <CALCETrXwVb99hAvqR2o54aPwtpr8oubROtiRt45SiYRfUTAxCw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-04 23:38     ` Dave Hansen [this message]
     [not found]       ` <56622401.20001-gkUM19QKKo4@public.gmane.org>
2015-12-11 20:16         ` Andy Lutomirski

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