From: Dave Hansen <dave@sr71.net>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, x86@kernel.org,
torvalds@linux-foundation.org, Dave Hansen <dave@sr71.net>,
dave.hansen@linux.intel.com
Subject: [PATCH 23/31] x86, pkeys: add Kconfig prompt to existing config option
Date: Fri, 29 Jan 2016 10:17:15 -0800 [thread overview]
Message-ID: <20160129181715.1EA81AC7@viggo.jf.intel.com> (raw)
In-Reply-To: <20160129181642.98E7D468@viggo.jf.intel.com>
From: Dave Hansen <dave.hansen@linux.intel.com>
I don't have a strong opinion on whether we need this 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.
Here's the option if folks want it.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
---
b/arch/x86/Kconfig | 10 ++++++++++
1 file changed, 10 insertions(+)
diff -puN arch/x86/Kconfig~pkeys-40-kconfig-prompt arch/x86/Kconfig
--- a/arch/x86/Kconfig~pkeys-40-kconfig-prompt 2016-01-28 15:52:26.863702069 -0800
+++ b/arch/x86/Kconfig 2016-01-28 15:52:26.867702253 -0800
@@ -1716,8 +1716,18 @@ config X86_INTEL_MPX
If unsure, say N.
config X86_INTEL_MEMORY_PROTECTION_KEYS
+ prompt "Intel Memory Protection Keys"
def_bool y
+ # Note: only available in 64-bit mode
depends on CPU_SUP_INTEL && X86_64
+ ---help---
+ Memory Protection Keys provides a mechanism for enforcing
+ page-based protections, but without requiring modification of the
+ page tables when an application changes protection domains.
+
+ For details, see Documentation/x86/protection-keys.txt
+
+ If unsure, say y.
config EFI
bool "EFI runtime service support"
_
--
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next prev parent reply other threads:[~2016-01-29 18:17 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-29 18:16 [PATCH 00/31] x86: Memory Protection Keys (v9) Dave Hansen
2016-01-29 18:16 ` [PATCH 01/31] mm, gup: introduce concept of "foreign" get_user_pages() Dave Hansen
2016-02-09 12:46 ` Ingo Molnar
2016-02-09 13:06 ` Ingo Molnar
2016-02-09 15:15 ` Dave Hansen
2016-01-29 18:16 ` [PATCH 02/31] x86, fpu: add placeholder for Processor Trace XSAVE state Dave Hansen
2016-01-29 18:16 ` [PATCH 03/31] x86, pkeys: Add Kconfig option Dave Hansen
2016-01-29 18:16 ` [PATCH 04/31] x86, pkeys: cpuid bit definition Dave Hansen
2016-01-29 18:16 ` [PATCH 05/31] x86, pkeys: define new CR4 bit Dave Hansen
2016-01-29 18:16 ` [PATCH 06/31] x86, pkeys: add PKRU xsave fields and data structure(s) Dave Hansen
2016-01-29 18:16 ` [PATCH 07/31] x86, pkeys: PTE bits for storing protection key Dave Hansen
2016-01-29 18:16 ` [PATCH 08/31] x86, pkeys: new page fault error code bit: PF_PK Dave Hansen
2016-01-29 18:16 ` [PATCH 09/31] x86, pkeys: store protection in high VMA flags Dave Hansen
2016-01-29 18:16 ` [PATCH 10/31] x86, pkeys: arch-specific protection bits Dave Hansen
2016-01-29 18:16 ` [PATCH 11/31] x86, pkeys: pass VMA down in to fault signal generation code Dave Hansen
2016-01-29 18:16 ` [PATCH 12/31] signals, pkeys: notify userspace about protection key faults Dave Hansen
2016-01-29 18:17 ` [PATCH 13/31] x86, pkeys: fill in pkey field in siginfo Dave Hansen
2016-01-29 18:17 ` [PATCH 14/31] x86, pkeys: add functions to fetch PKRU Dave Hansen
2016-01-29 18:17 ` [PATCH 15/31] mm: factor out VMA fault permission checking Dave Hansen
2016-01-29 18:17 ` [PATCH 16/31] x86, mm: simplify get_user_pages() PTE bit handling Dave Hansen
2016-01-29 18:17 ` [PATCH 17/31] x86, pkeys: check VMAs and PTEs for protection keys Dave Hansen
2016-01-29 18:17 ` [PATCH 18/31] mm: do not enforce PKEY permissions on "foreign" mm access Dave Hansen
2016-01-29 18:17 ` [PATCH 19/31] x86, pkeys: optimize fault handling in access_error() Dave Hansen
2016-01-29 18:17 ` [PATCH 20/31] x86, pkeys: differentiate instruction fetches Dave Hansen
2016-01-29 18:17 ` [PATCH 21/31] x86, pkeys: dump PKRU with other kernel registers Dave Hansen
2016-01-29 18:17 ` [PATCH 22/31] x86, pkeys: dump pkey from VMA in /proc/pid/smaps Dave Hansen
2016-02-02 16:11 ` Vlastimil Babka
2016-02-02 19:04 ` Dave Hansen
2016-01-29 18:17 ` Dave Hansen [this message]
2016-01-29 18:17 ` [PATCH 24/31] x86, pkeys: actually enable Memory Protection Keys in CPU Dave Hansen
2016-01-29 18:17 ` [PATCH 25/31] mm, multi-arch: pass a protection key in to calc_vm_flag_bits() Dave Hansen
2016-01-29 18:17 ` [PATCH 26/31] x86, pkeys: add arch_validate_pkey() Dave Hansen
2016-01-29 18:17 ` [PATCH 27/31] x86: separate out LDT init from context init Dave Hansen
2016-01-29 18:17 ` [PATCH 28/31] x86, fpu: allow setting of XSAVE state Dave Hansen
2016-01-29 18:17 ` [PATCH 29/31] x86, pkeys: allow kernel to modify user pkey rights register Dave Hansen
2016-01-29 18:17 ` [PATCH 30/31] x86, pkeys: create an x86 arch_calc_vm_prot_bits() for VMA flags Dave Hansen
2016-01-29 18:17 ` [PATCH 31/31] x86, pkeys: execute-only support Dave Hansen
-- strict thread matches above, loose matches on Subject: below --
2016-01-07 0:01 [PATCH 00/31] x86: Memory Protection Keys (v8) Dave Hansen
2016-01-07 0:01 ` [PATCH 23/31] x86, pkeys: add Kconfig prompt to existing config option Dave Hansen
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