android_kernel_samsung_msm8976/arch
Andrey Ryabinin abe03f8401 x86_64: add KASan support
This patch adds arch specific code for kernel address sanitizer.

16TB of virtual addressed used for shadow memory.  It's located in range
[ffffec0000000000 - fffffc0000000000] between vmemmap and %esp fixup
stacks.

At early stage we map whole shadow region with zero page.  Latter, after
pages mapped to direct mapping address range we unmap zero pages from
corresponding shadow (see kasan_map_shadow()) and allocate and map a real
shadow memory reusing vmemmap_populate() function.

Also replace __pa with __pa_nodebug before shadow initialized.  __pa with
CONFIG_DEBUG_VIRTUAL=y make external function call (__phys_addr)
__phys_addr is instrumented, so __asan_load could be called before shadow
area initialized.

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Konstantin Serebryany <kcc@google.com>
Cc: Dmitry Chernenkov <dmitryc@google.com>
Signed-off-by: Andrey Konovalov <adech.fo@gmail.com>
Cc: Yuri Gribov <tetra2005@gmail.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[dkeitel@codeaurora.org: resolve minor merge conflicts]
Git-commit: ef7f0d6a6ca8c9e4b27d78895af86c2fbfaeedb2
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
Change-Id: I1fb42aba6a10215afa992b39cc5c83b496966dcd
2015-05-04 14:03:57 -07:00
..
alpha
arc This is the 3.10.73 stable release 2015-04-24 18:14:57 -07:00
arm Merge "ARM: dts: msm8952: update pinctrl configuration for US_EU GPIO" 2015-05-04 03:57:43 -07:00
arm64 Merge "defconfig: msm8916: enable ADV7533 driver" 2015-05-03 04:50:25 -07:00
avr32
blackfin
c6x
cris
frv
h8300
hexagon
ia64
m32r
m68k This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
metag This is the 3.10.73 stable release 2015-04-24 18:14:57 -07:00
microblaze
mips This is the 3.10.73 stable release 2015-04-24 18:14:57 -07:00
mn10300 This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
openrisc This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
parisc This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
powerpc This is the 3.10.73 stable release 2015-04-24 18:14:57 -07:00
s390 This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
score This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
sh
sparc This is the 3.10.73 stable release 2015-04-24 18:14:57 -07:00
tile This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
um This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
unicore32
x86 x86_64: add KASan support 2015-05-04 14:03:57 -07:00
xtensa This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
.gitignore
Kconfig