From: Dave Hansen <dave-gkUM19QKKo4@public.gmane.org>
To: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Mel Gorman
<mgorman-3eNAlZScCAx27rWaFMvyedHuzzzSOjJt@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org,
akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org,
dave.hansen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
arnd-r2nGTMty4D4@public.gmane.org,
hughd-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org
Subject: Re: [PATCH 6/9] x86, pkeys: add pkey set/get syscalls
Date: Fri, 8 Jul 2016 09:32:07 -0700 [thread overview]
Message-ID: <577FD587.6050101@sr71.net> (raw)
In-Reply-To: <20160708071810.GA27457-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On 07/08/2016 12:18 AM, Ingo Molnar wrote:
> So the question is, what is user-space going to do? Do any glibc
> patches exist? How are the user-space library side APIs going to look
> like?
My goal at the moment is to get folks enabled to the point that they can
start modifying apps to use pkeys without having to patch their kernels.
I don't have confidence that we can design good high-level userspace
interfaces without seeing some real apps try to use the low-level ones
and seeing how they struggle.
I had some glibc code to do the pkey alloc/free operations, but those
aren't necessary if we're doing it in the kernel. Other than getting
the syscall wrappers in place, I don't have any immediate plans to do
anything in glibc.
Was there something you were expecting to see?
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@sr71.net>
To: Ingo Molnar <mingo@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>,
linux-kernel@vger.kernel.org, x86@kernel.org,
linux-api@vger.kernel.org, linux-arch@vger.kernel.org,
linux-mm@kvack.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org, dave.hansen@linux.intel.com,
arnd@arndb.de, hughd@google.com, viro@zeniv.linux.org.uk
Subject: Re: [PATCH 6/9] x86, pkeys: add pkey set/get syscalls
Date: Fri, 8 Jul 2016 09:32:07 -0700 [thread overview]
Message-ID: <577FD587.6050101@sr71.net> (raw)
Message-ID: <20160708163207.EllU5FFEpS9Cqw3I46ZyhIPksL9sscazHauL21YizGk@z> (raw)
In-Reply-To: <20160708071810.GA27457@gmail.com>
On 07/08/2016 12:18 AM, Ingo Molnar wrote:
> So the question is, what is user-space going to do? Do any glibc
> patches exist? How are the user-space library side APIs going to look
> like?
My goal at the moment is to get folks enabled to the point that they can
start modifying apps to use pkeys without having to patch their kernels.
I don't have confidence that we can design good high-level userspace
interfaces without seeing some real apps try to use the low-level ones
and seeing how they struggle.
I had some glibc code to do the pkey alloc/free operations, but those
aren't necessary if we're doing it in the kernel. Other than getting
the syscall wrappers in place, I don't have any immediate plans to do
anything in glibc.
Was there something you were expecting to see?
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@sr71.net>
To: Ingo Molnar <mingo@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>,
linux-kernel@vger.kernel.org, x86@kernel.org,
linux-api@vger.kernel.org, linux-arch@vger.kernel.org,
linux-mm@kvack.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org, dave.hansen@linux.intel.com,
arnd@arndb.de, hughd@google.com, viro@zeniv.linux.org.uk
Subject: Re: [PATCH 6/9] x86, pkeys: add pkey set/get syscalls
Date: Fri, 8 Jul 2016 09:32:07 -0700 [thread overview]
Message-ID: <577FD587.6050101@sr71.net> (raw)
In-Reply-To: <20160708071810.GA27457@gmail.com>
On 07/08/2016 12:18 AM, Ingo Molnar wrote:
> So the question is, what is user-space going to do? Do any glibc
> patches exist? How are the user-space library side APIs going to look
> like?
My goal at the moment is to get folks enabled to the point that they can
start modifying apps to use pkeys without having to patch their kernels.
I don't have confidence that we can design good high-level userspace
interfaces without seeing some real apps try to use the low-level ones
and seeing how they struggle.
I had some glibc code to do the pkey alloc/free operations, but those
aren't necessary if we're doing it in the kernel. Other than getting
the syscall wrappers in place, I don't have any immediate plans to do
anything in glibc.
Was there something you were expecting to see?
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next prev parent reply other threads:[~2016-07-08 16:32 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-07 12:47 [PATCH 0/9] [REVIEW-REQUEST] [v4] System Calls for Memory Protection Keys Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 12:47 ` [PATCH 1/9] x86, pkeys: add fault handling for PF_PK page fault bit Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 14:40 ` Mel Gorman
2016-07-07 14:40 ` Mel Gorman
2016-07-07 15:42 ` Dave Hansen
2016-07-07 15:42 ` Dave Hansen
2016-07-07 12:47 ` [PATCH 2/9] mm: implement new pkey_mprotect() system call Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 14:40 ` Mel Gorman
2016-07-07 14:40 ` Mel Gorman
2016-07-07 16:51 ` Dave Hansen
2016-07-07 16:51 ` Dave Hansen
2016-07-08 10:15 ` Mel Gorman
2016-07-08 10:15 ` Mel Gorman
2016-07-07 12:47 ` [PATCH 3/9] x86, pkeys: make mprotect_key() mask off additional vm_flags Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 12:47 ` [PATCH 4/9] x86: wire up mprotect_key() system call Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 12:47 ` [PATCH 5/9] x86, pkeys: allocation/free syscalls Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 14:40 ` Mel Gorman
2016-07-07 14:40 ` Mel Gorman
2016-07-07 15:38 ` Dave Hansen
2016-07-07 15:38 ` Dave Hansen
2016-07-07 12:47 ` [PATCH 6/9] x86, pkeys: add pkey set/get syscalls Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 14:45 ` Mel Gorman
2016-07-07 14:45 ` Mel Gorman
2016-07-07 17:33 ` Dave Hansen
2016-07-07 17:33 ` Dave Hansen
2016-07-08 7:18 ` Ingo Molnar
2016-07-08 7:18 ` Ingo Molnar
[not found] ` <20160708071810.GA27457-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-07-08 16:32 ` Dave Hansen [this message]
2016-07-08 16:32 ` Dave Hansen
2016-07-08 16:32 ` Dave Hansen
2016-07-09 8:37 ` Ingo Molnar
2016-07-09 8:37 ` Ingo Molnar
2016-07-09 8:37 ` Ingo Molnar
2016-07-11 4:25 ` Andy Lutomirski
2016-07-11 4:25 ` Andy Lutomirski
[not found] ` <CALCETrXJhVz6Za4=oidiM2Vfbb+XdggFBYiVyvOCcia+w064aQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-07-11 7:35 ` Ingo Molnar
2016-07-11 7:35 ` Ingo Molnar
2016-07-11 7:35 ` Ingo Molnar
2016-07-11 14:28 ` Dave Hansen
2016-07-11 14:28 ` Dave Hansen
2016-07-12 7:13 ` Ingo Molnar
2016-07-12 7:13 ` Ingo Molnar
2016-07-12 15:39 ` Dave Hansen
2016-07-12 15:39 ` Dave Hansen
2016-07-11 14:50 ` Andy Lutomirski
2016-07-11 14:50 ` Andy Lutomirski
2016-07-11 14:34 ` Dave Hansen
2016-07-11 14:34 ` Dave Hansen
2016-07-11 14:34 ` Dave Hansen
2016-07-11 14:45 ` Andy Lutomirski
2016-07-11 14:45 ` Andy Lutomirski
2016-07-11 15:48 ` Dave Hansen
2016-07-11 15:48 ` Dave Hansen
2016-07-12 16:32 ` Andy Lutomirski
2016-07-12 16:32 ` Andy Lutomirski
2016-07-12 17:12 ` Dave Hansen
2016-07-12 17:12 ` Dave Hansen
2016-07-12 22:55 ` Andy Lutomirski
2016-07-12 22:55 ` Andy Lutomirski
2016-07-13 7:56 ` Ingo Molnar
2016-07-13 7:56 ` Ingo Molnar
2016-07-13 18:43 ` Andy Lutomirski
2016-07-13 18:43 ` Andy Lutomirski
2016-07-14 8:07 ` Ingo Molnar
2016-07-14 8:07 ` Ingo Molnar
2016-07-18 4:43 ` Andy Lutomirski
2016-07-18 4:43 ` Andy Lutomirski
2016-07-18 9:56 ` Ingo Molnar
2016-07-18 9:56 ` Ingo Molnar
[not found] ` <20160709083715.GA29939-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-07-18 18:02 ` Dave Hansen
2016-07-18 18:02 ` Dave Hansen
2016-07-18 18:02 ` Dave Hansen
2016-07-18 20:12 ` Dave Hansen
2016-07-18 20:12 ` Dave Hansen
2016-07-18 20:12 ` Dave Hansen
2016-07-08 19:26 ` Dave Hansen
2016-07-08 19:26 ` Dave Hansen
[not found] ` <577E924C.6010406-gkUM19QKKo4@public.gmane.org>
2016-07-08 10:22 ` Mel Gorman
2016-07-08 10:22 ` Mel Gorman
2016-07-08 10:22 ` Mel Gorman
2016-07-07 12:47 ` [PATCH 7/9] generic syscalls: wire up memory protection keys syscalls Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 12:47 ` [PATCH 8/9] pkeys: add details of system call use to Documentation/ Dave Hansen
2016-07-07 12:47 ` Dave Hansen
2016-07-07 12:47 ` [PATCH 9/9] x86, pkeys: add self-tests Dave Hansen
2016-07-07 12:47 ` Dave Hansen
[not found] ` <20160707124719.3F04C882-LXbPSdftPKxrdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2016-07-07 14:47 ` [PATCH 0/9] [REVIEW-REQUEST] [v4] System Calls for Memory Protection Keys Mel Gorman
2016-07-07 14:47 ` Mel Gorman
2016-07-07 14:47 ` Mel Gorman
2016-07-08 18:38 ` Hugh Dickins
2016-07-08 18:38 ` Hugh Dickins
2016-07-08 18:38 ` Hugh Dickins
-- strict thread matches above, loose matches on Subject: below --
2016-06-09 0:01 [PATCH 0/9] [v3] " Dave Hansen
2016-06-09 0:01 ` [PATCH 6/9] x86, pkeys: add pkey set/get syscalls Dave Hansen
2016-06-09 0:01 ` Dave Hansen
2016-06-07 20:47 [PATCH 0/9] [v2] System Calls for Memory Protection Keys Dave Hansen
2016-06-07 20:47 ` [PATCH 6/9] x86, pkeys: add pkey set/get syscalls Dave Hansen
2016-06-07 20:47 ` Dave Hansen
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