From: Dave Hansen <dave.hansen-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
Dave Hansen <dave.hansen-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: [PATCH 0/5] [RFCv5] add manpages for Memory Protection Keys
Date: Tue, 13 Sep 2016 12:44:06 -0700 [thread overview]
Message-ID: <20160913194406.20CBFD0C@ray> (raw)
From: Dave Hansen <dave.hansen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Changes from v4:
* Remove references to pkey_get/pkey_set since those were
removed from the code that got merged
* Updated example code to stop using pkey_get/set
Changes from v3:
* Split patches up, one per manpage.
* Started new sentences on new lines.
* Added description of default key to pkey.7
* reindented and fixed up sys_ in example code, s/err/status/,
also removed assert()s.
* Various other fixes in response to Michael's review
Changes from v2:
* clarified that calling pkey_free() on a pkey in use by
a mapping is bad.
--
Memory Protection Keys for User pages is an Intel CPU feature
which will first appear on Skylake Servers, but will also be
supported on future non-server parts (there is also a QEMU
implementation). It provides a mechanism for enforcing
page-based protections, but without requiring modification of the
page tables when an application wishes to change permissions.
I have propsed adding three new system calls to support this feature.
The three calls are distributed across two man-pages (one existing
and one new), plus a new pkey(7) page which serves as a general
overview of the feature with example code.
The system calls for this feature are in the -tip tree currently
and are expected to be merged for 4.9. I will submit the final
versions of these man-pages once the 4.9 kernel has been released.
The latest version of the code can be found here, in addition to
in the -tip tree and -next.
http://git.kernel.org/cgit/linux/kernel/git/daveh/x86-pkeys.git/
Signed-off-by: Dave Hansen <dave.hansen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
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next reply other threads:[~2016-09-13 19:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-13 19:44 Dave Hansen [this message]
2016-09-13 19:44 ` [PATCH 1/5] pkey.7: New page with overview of Memory Protection Keys Dave Hansen
2016-10-12 6:25 ` Michael Kerrisk (man-pages)
[not found] ` <CAKgNAkj8voeBsjERrRq+17L9rK5Vy_quv7Dm_7Hkmuvxfpw_iQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-12 16:41 ` Dave Hansen
[not found] ` <57FE679D.8010101-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-10-17 12:04 ` Michael Kerrisk (man-pages)
[not found] ` <558d30e9-e374-728c-2099-ed8eccadf7a2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-10-17 22:06 ` Dave Hansen
[not found] ` <58054B48.1030600-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-10-18 6:01 ` Michael Kerrisk (man-pages)
2016-09-13 19:45 ` [PATCH 2/5] mprotect.2: add pkey_mprotect() syscall Dave Hansen
2016-09-13 19:45 ` [PATCH 3/5] pkey_alloc.2: New page describing protection key allocation and free Dave Hansen
2016-09-13 19:46 ` [PATCH 4/5] sigaction.2: describe siginfo changes from pkey-induced signals Dave Hansen
2016-09-13 19:46 ` [PATCH 5/5] proc.5: describe new ProtectionKey smaps field Dave Hansen
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