From: tip-bot for Dave Hansen <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, brgerst@gmail.com, bp@alien8.de,
tglx@linutronix.de, torvalds@linux-foundation.org, hpa@zytor.com,
dave.hansen@linux.intel.com, akpm@linux-foundation.org,
peterz@infradead.org, mingo@kernel.org, luto@amacapital.net,
dvlasenk@redhat.com, dave@sr71.net, riel@redhat.com
Subject: [tip:mm/pkeys] x86/mm/pkeys: Add Kconfig option
Date: Thu, 18 Feb 2016 12:16:47 -0800 [thread overview]
Message-ID: <tip-35e97790f5f1e5cf2b5522c55e3e31d5c81bd226@git.kernel.org> (raw)
In-Reply-To: <20160212210200.DB7055E8@viggo.jf.intel.com>
Commit-ID: 35e97790f5f1e5cf2b5522c55e3e31d5c81bd226
Gitweb: http://git.kernel.org/tip/35e97790f5f1e5cf2b5522c55e3e31d5c81bd226
Author: Dave Hansen <dave.hansen@linux.intel.com>
AuthorDate: Fri, 12 Feb 2016 13:02:00 -0800
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Tue, 16 Feb 2016 10:11:13 +0100
x86/mm/pkeys: Add Kconfig option
I don't have a strong opinion on whether we need a Kconfig prompt
or not. Protection Keys has relatively little code associated
with it, and it is not a heavyweight feature to keep enabled.
However, I can imagine that folks would still appreciate being
able to disable it.
Note that, with disabled-features.h, the checks in the code
for protection keys are always the same:
cpu_has(c, X86_FEATURE_PKU)
With the config option disabled, this essentially turns into an
We will hide the prompt for now.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20160212210200.DB7055E8@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ab2ed53..3632cdd 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1714,6 +1714,10 @@ config X86_INTEL_MPX
If unsure, say N.
+config X86_INTEL_MEMORY_PROTECTION_KEYS
+ def_bool y
+ depends on CPU_SUP_INTEL && X86_64
+
config EFI
bool "EFI runtime service support"
depends on ACPI
next prev parent reply other threads:[~2016-02-18 20:18 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-12 21:01 [PATCH 00/33] x86: Memory Protection Keys (v10) Dave Hansen
2016-02-12 21:01 ` [PATCH 01/33] mm: introduce get_user_pages_remote() Dave Hansen
2016-02-15 6:09 ` Balbir Singh
2016-02-15 16:29 ` Dave Hansen
2016-02-15 6:14 ` Srikar Dronamraju
2016-02-16 12:14 ` [tip:x86/pkeys] mm/gup: Introduce get_user_pages_remote() tip-bot for Dave Hansen
2016-02-20 6:25 ` Konstantin Khlebnikov
2016-02-12 21:01 ` [PATCH 02/33] mm: overload get_user_pages() functions Dave Hansen
2016-02-16 8:36 ` Ingo Molnar
2016-02-17 18:15 ` Dave Hansen
2016-02-18 20:15 ` [tip:mm/pkeys] mm/gup: Overload " tip-bot for Dave Hansen
2016-02-12 21:01 ` [PATCH 03/33] mm, gup: switch callers of get_user_pages() to not pass tsk/mm Dave Hansen
2016-02-18 20:16 ` [tip:mm/pkeys] mm/gup: Switch all " tip-bot for Dave Hansen
2016-02-12 21:01 ` [PATCH 04/33] x86, fpu: add placeholder for Processor Trace XSAVE state Dave Hansen
2016-02-18 20:16 ` [tip:mm/pkeys] x86/fpu: Add placeholder for 'Processor Trace' " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 05/33] x86, pkeys: Add Kconfig option Dave Hansen
2016-02-18 20:16 ` tip-bot for Dave Hansen [this message]
2016-02-19 11:27 ` [PATCH] x86/mm/pkeys: Do not enable them by default Borislav Petkov
2016-02-19 17:11 ` Dave Hansen
2016-02-19 17:23 ` Borislav Petkov
2016-02-19 17:49 ` Dave Hansen
2016-02-19 18:31 ` Borislav Petkov
2016-02-12 21:02 ` [PATCH 06/33] x86, pkeys: cpuid bit definition Dave Hansen
2016-02-18 20:17 ` [tip:mm/pkeys] x86/cpufeature, x86/mm/pkeys: Add protection keys related CPUID definitions tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 07/33] x86, pkeys: define new CR4 bit Dave Hansen
2016-02-18 20:17 ` [tip:mm/pkeys] x86/cpu, x86/mm/pkeys: Define " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 08/33] x86, pkeys: add PKRU xsave fields and data structure(s) Dave Hansen
2016-02-18 20:17 ` [tip:mm/pkeys] x86/fpu, x86/mm/pkeys: Add PKRU xsave fields and data structures tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 09/33] x86, pkeys: PTE bits for storing protection key Dave Hansen
2016-02-18 20:18 ` [tip:mm/pkeys] x86/mm/pkeys: Add " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 10/33] x86, pkeys: new page fault error code bit: PF_PK Dave Hansen
2016-02-18 20:18 ` [tip:mm/pkeys] x86/mm/pkeys: Add new 'PF_PK' page fault error code bit tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 11/33] x86, pkeys: store protection in high VMA flags Dave Hansen
2016-02-18 20:19 ` [tip:mm/pkeys] mm/core, x86/mm/pkeys: Store protection bits " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 12/33] x86, pkeys: arch-specific protection bits Dave Hansen
2016-02-18 20:19 ` [tip:mm/pkeys] x86/mm/pkeys: Add arch-specific VMA " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 13/33] x86, pkeys: pass VMA down in to fault signal generation code Dave Hansen
2016-02-18 20:19 ` [tip:mm/pkeys] x86/mm/pkeys: Pass " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 14/33] signals, pkeys: notify userspace about protection key faults Dave Hansen
2016-02-18 20:20 ` [tip:mm/pkeys] signals, pkeys: Notify " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 15/33] x86, pkeys: fill in pkey field in siginfo Dave Hansen
2016-02-18 20:20 ` [tip:mm/pkeys] x86/mm/pkeys: Fill " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 16/33] x86, pkeys: add functions to fetch PKRU Dave Hansen
2016-02-18 20:21 ` [tip:mm/pkeys] x86/mm/pkeys: Add " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 17/33] mm: factor out VMA fault permission checking Dave Hansen
2016-02-18 20:21 ` [tip:mm/pkeys] mm/gup: Factor " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 18/33] x86, mm: simplify get_user_pages() PTE bit handling Dave Hansen
2016-02-18 20:21 ` [tip:mm/pkeys] x86/mm/gup: Simplify " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 19/33] x86, pkeys: check VMAs and PTEs for protection keys Dave Hansen
2016-02-18 20:22 ` [tip:mm/pkeys] mm/gup, x86/mm/pkeys: Check " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 20/33] mm: do not enforce PKEY permissions on "foreign" mm access Dave Hansen
2016-02-12 21:02 ` [PATCH 21/33] x86, pkeys: optimize fault handling in access_error() Dave Hansen
2016-02-18 20:23 ` [tip:mm/pkeys] x86/mm/pkeys: Optimize " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 22/33] x86, pkeys: differentiate instruction fetches Dave Hansen
2016-02-18 20:23 ` [tip:mm/pkeys] mm/core, x86/mm/pkeys: Differentiate " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 23/33] x86, pkeys: dump PKRU with other kernel registers Dave Hansen
2016-02-18 20:24 ` [tip:mm/pkeys] x86/mm/pkeys: Dump " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 24/33] x86, pkeys: dump pkey from VMA in /proc/pid/smaps Dave Hansen
2016-02-18 20:24 ` [tip:mm/pkeys] x86/mm/pkeys: Dump pkey from VMA in /proc/pid/ smaps tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 25/33] x86, pkeys: add Kconfig prompt to existing config option Dave Hansen
2016-02-18 20:24 ` [tip:mm/pkeys] x86/mm/pkeys: Add " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 26/33] x86, pkeys: actually enable Memory Protection Keys in CPU Dave Hansen
2016-02-18 20:25 ` [tip:mm/pkeys] x86/mm/pkeys: Actually enable Memory Protection Keys in the CPU tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 27/33] mm, multi-arch: pass a protection key in to calc_vm_flag_bits() Dave Hansen
2016-02-18 20:25 ` [tip:mm/pkeys] mm/core, arch, powerpc: Pass " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 28/33] x86, pkeys: add arch_validate_pkey() Dave Hansen
2016-02-18 20:25 ` [tip:mm/pkeys] mm/core, x86/mm/pkeys: Add arch_validate_pkey() tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 29/33] x86: separate out LDT init from context init Dave Hansen
2016-02-18 20:26 ` [tip:mm/pkeys] x86/mm: Factor " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 30/33] x86, fpu: allow setting of XSAVE state Dave Hansen
2016-02-18 20:26 ` [tip:mm/pkeys] x86/fpu: Allow " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 31/33] x86, pkeys: allow kernel to modify user pkey rights register Dave Hansen
2016-02-18 20:27 ` [tip:mm/pkeys] x86/mm/pkeys: Allow " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 32/33] x86, pkeys: create an x86 arch_calc_vm_prot_bits() for VMA flags Dave Hansen
2016-02-18 20:27 ` [tip:mm/pkeys] x86/mm/pkeys: Create an x86 arch_calc_vm_prot_bits () " tip-bot for Dave Hansen
2016-02-12 21:02 ` [PATCH 33/33] x86, pkeys: execute-only support Dave Hansen
2016-02-17 21:27 ` Kees Cook
2016-02-17 21:33 ` Dave Hansen
2016-02-17 21:36 ` Kees Cook
2016-02-17 22:17 ` Andy Lutomirski
2016-02-17 22:53 ` Dave Hansen
2016-02-18 0:46 ` Andy Lutomirski
2016-02-18 20:27 ` [tip:mm/pkeys] mm/core, x86/mm/pkeys: Add execute-only protection keys support tip-bot for Dave Hansen
2016-02-16 9:29 ` [PATCH 00/33] x86: Memory Protection Keys (v10) Ingo Molnar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=tip-35e97790f5f1e5cf2b5522c55e3e31d5c81bd226@git.kernel.org \
--to=tipbot@zytor.com \
--cc=akpm@linux-foundation.org \
--cc=bp@alien8.de \
--cc=brgerst@gmail.com \
--cc=dave.hansen@linux.intel.com \
--cc=dave@sr71.net \
--cc=dvlasenk@redhat.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=riel@redhat.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).