From: Dave Hansen <dave@sr71.net>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, x86@kernel.org, Dave Hansen <dave@sr71.net>,
dave.hansen@linux.intel.com
Subject: [PATCH 03/31] x86, pkeys: Add Kconfig option
Date: Wed, 06 Jan 2016 16:01:09 -0800 [thread overview]
Message-ID: <20160107000109.E671EBF4@viggo.jf.intel.com> (raw)
In-Reply-To: <20160107000104.1A105322@viggo.jf.intel.com>
From: Dave Hansen <dave.hansen@linux.intel.com>
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
#ifdef.
We will hide the prompt for now.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
---
b/arch/x86/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff -puN arch/x86/Kconfig~pkeys-01-kconfig arch/x86/Kconfig
--- a/arch/x86/Kconfig~pkeys-01-kconfig 2016-01-06 15:50:03.902078982 -0800
+++ b/arch/x86/Kconfig 2016-01-06 15:50:03.905079117 -0800
@@ -1680,6 +1680,10 @@ 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
_
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@sr71.net>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, x86@kernel.org, Dave Hansen <dave@sr71.net>,
dave.hansen@linux.intel.com
Subject: [PATCH 03/31] x86, pkeys: Add Kconfig option
Date: Wed, 06 Jan 2016 16:01:09 -0800 [thread overview]
Message-ID: <20160107000109.E671EBF4@viggo.jf.intel.com> (raw)
In-Reply-To: <20160107000104.1A105322@viggo.jf.intel.com>
From: Dave Hansen <dave.hansen@linux.intel.com>
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
#ifdef.
We will hide the prompt for now.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
---
b/arch/x86/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff -puN arch/x86/Kconfig~pkeys-01-kconfig arch/x86/Kconfig
--- a/arch/x86/Kconfig~pkeys-01-kconfig 2016-01-06 15:50:03.902078982 -0800
+++ b/arch/x86/Kconfig 2016-01-06 15:50:03.905079117 -0800
@@ -1680,6 +1680,10 @@ 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:[~2016-01-07 0:01 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-07 0:01 [PATCH 00/31] x86: Memory Protection Keys (v8) Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 01/31] mm, gup: introduce concept of "foreign" get_user_pages() Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-13 19:00 ` Vlastimil Babka
2016-01-13 19:00 ` Vlastimil Babka
2016-01-13 19:16 ` Dave Hansen
2016-01-13 19:16 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 02/31] x86, fpu: add placeholder for Processor Trace XSAVE state Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` Dave Hansen [this message]
2016-01-07 0:01 ` [PATCH 03/31] x86, pkeys: Add Kconfig option Dave Hansen
2016-01-07 0:01 ` [PATCH 04/31] x86, pkeys: cpuid bit definition Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 05/31] x86, pkeys: define new CR4 bit Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 06/31] x86, pkeys: add PKRU xsave fields and data structure(s) Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 07/31] x86, pkeys: PTE bits for storing protection key Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 08/31] x86, pkeys: new page fault error code bit: PF_PK Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 09/31] x86, pkeys: store protection in high VMA flags Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 10/31] x86, pkeys: arch-specific protection bits Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-08 19:31 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 11/31] x86, pkeys: pass VMA down in to fault signal generation code Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 12/31] signals, pkeys: notify userspace about protection key faults Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 13/31] x86, pkeys: fill in pkey field in siginfo Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 14/31] x86, pkeys: add functions to fetch PKRU Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-08 19:32 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 15/31] mm: factor out VMA fault permission checking Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 16/31] x86, mm: simplify get_user_pages() PTE bit handling Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 17/31] x86, pkeys: check VMAs and PTEs for protection keys Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 18/31] mm: add gup flag to indicate "foreign" mm access Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 19/31] x86, pkeys: optimize fault handling in access_error() Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 20/31] x86, pkeys: differentiate instruction fetches Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 21/31] x86, pkeys: dump PKRU with other kernel registers Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 22/31] x86, pkeys: dump pkey from VMA in /proc/pid/smaps Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 23/31] x86, pkeys: add Kconfig prompt to existing config option Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 24/31] x86, pkeys: actually enable Memory Protection Keys in CPU Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 25/31] mm, multi-arch: pass a protection key in to calc_vm_flag_bits() Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 26/31] x86, pkeys: add arch_validate_pkey() Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-08 19:34 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 27/31] x86: separate out LDT init from context init Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 28/31] x86, fpu: allow setting of XSAVE state Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 0:01 ` [PATCH 29/31] x86, pkeys: allow kernel to modify user pkey rights register Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-08 19:40 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 30/31] x86, pkeys: create an x86 arch_calc_vm_prot_bits() for VMA flags Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-08 19:40 ` Thomas Gleixner
2016-01-07 0:01 ` [PATCH 31/31] x86, pkeys: execute-only support Dave Hansen
2016-01-07 0:01 ` Dave Hansen
2016-01-07 21:02 ` Kees Cook
2016-01-07 21:02 ` Kees Cook
2016-01-07 22:25 ` Dave Hansen
2016-01-07 22:25 ` Dave Hansen
2016-01-07 21:10 ` Andy Lutomirski
2016-01-07 21:10 ` Andy Lutomirski
2016-01-07 22:13 ` Dave Hansen
2016-01-07 22:13 ` Dave Hansen
2016-01-07 22:44 ` Andy Lutomirski
2016-01-07 22:44 ` Andy Lutomirski
2016-01-08 19:51 ` Thomas Gleixner
2016-01-08 19:51 ` Thomas Gleixner
-- strict thread matches above, loose matches on Subject: below --
2016-01-29 18:16 [PATCH 00/31] x86: Memory Protection Keys (v9) Dave Hansen
2016-01-29 18:16 ` [PATCH 03/31] x86, pkeys: Add Kconfig option Dave Hansen
2016-01-29 18:16 ` Dave Hansen
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=20160107000109.E671EBF4@viggo.jf.intel.com \
--to=dave@sr71.net \
--cc=dave.hansen@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=x86@kernel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.