linux-stable.git/arch/arm/include/asm/cacheflush.h, branch v4.12.2

treewide: decouple cacheflush.h and set_memory.h

2017-05-09T00:15:14+00:00

Now that all call sites, completely decouple cacheflush.h and
set_memory.h

[sfr@canb.auug.org.au: kprobes/x86: merge fix for set_memory.h decoupling]
  Link: http://lkml.kernel.org/r/20170418180903.10300fd3@canb.auug.org.au
Link: http://lkml.kernel.org/r/1488920133-27229-17-git-send-email-labbott@redhat.com
Signed-off-by: Laura Abbott 
Signed-off-by: Stephen Rothwell 
Acked-by: Catalin Marinas 
Acked-by: Mark Rutland 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

treewide: move set_memory_* functions away from cacheflush.h

2017-05-09T00:15:13+00:00

Patch series "set_memory_* functions header refactor", v3.

The set_memory_* APIs came out of a desire to have a better way to
change memory attributes.  Many of these attributes were linked to cache
functionality so the prototypes were put in cacheflush.h.  These days,
the APIs have grown and have a much wider use than just cache APIs.  To
support this growth, split off set_memory_* and friends into a separate
header file to avoid growing cacheflush.h for APIs that have nothing to
do with caches.

Link: http://lkml.kernel.org/r/1488920133-27229-2-git-send-email-labbott@redhat.com
Signed-off-by: Laura Abbott 
Acked-by: Russell King 
Acked-by: Mark Rutland 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

arch: Rename CONFIG_DEBUG_RODATA and CONFIG_DEBUG_MODULE_RONX

2017-02-07T20:32:52+00:00

Both of these options are poorly named. The features they provide are
necessary for system security and should not be considered debug only.
Change the names to CONFIG_STRICT_KERNEL_RWX and
CONFIG_STRICT_MODULE_RWX to better describe what these options do.

Signed-off-by: Laura Abbott 
Acked-by: Jessica Yu 
Signed-off-by: Kees Cook

ARM: 8601/1: Remove unused secure_flush_area API

2016-08-26T14:11:17+00:00

This patch removes the unused secure_flush_area function.  The only
consumer of this function has moved to using the streaming DMA APIs.

Signed-off-by: Andy Gross 
Signed-off-by: Russell King

asm-generic: Consolidate mark_rodata_ro()

2016-02-22T07:51:37+00:00

Instead of defining mark_rodata_ro() in each architecture, consolidate it.

Signed-off-by: Kees Cook 
Acked-by: Will Deacon 
Cc: Andrew Morton 
Cc: Andy Gross 
Cc: Andy Lutomirski 
Cc: Ard Biesheuvel 
Cc: Arnd Bergmann 
Cc: Ashok Kumar 
Cc: Borislav Petkov 
Cc: Borislav Petkov 
Cc: Brian Gerst 
Cc: Catalin Marinas 
Cc: Dan Williams 
Cc: David Brown 
Cc: David Hildenbrand 
Cc: Denys Vlasenko 
Cc: Emese Revfy 
Cc: H. Peter Anvin 
Cc: Helge Deller 
Cc: James E.J. Bottomley 
Cc: Linus Torvalds 
Cc: Luis R. Rodriguez 
Cc: Marc Zyngier 
Cc: Mark Rutland 
Cc: Mathias Krause 
Cc: Michael Ellerman 
Cc: Nicolas Pitre 
Cc: PaX Team 
Cc: Paul Gortmaker 
Cc: Peter Zijlstra 
Cc: Ross Zwisler 
Cc: Russell King 
Cc: Rusty Russell 
Cc: Stephen Boyd 
Cc: Thomas Gleixner 
Cc: Toshi Kani 
Cc: kernel-hardening@lists.openwall.com
Cc: linux-arch 
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Link: http://lkml.kernel.org/r/1455748879-21872-2-git-send-email-keescook@chromium.org
Signed-off-by: Ingo Molnar

firmware: qcom_scm-32: replace open-coded call to __cpuc_flush_dcache_area()

2015-08-11T17:45:00+00:00

Rathe rthan directly accessing architecture internal functions, provide
an "method"-centric wrapper for qcom_scm-32 to do what's necessary to
ensure that the secure monitor can see the data.  This is called
"secure_flush_area" and ensures that the specified memory area is
coherent across the secure boundary.

Acked-by: Andy Gross 
Reviewed-by: Stephen Boyd 
Signed-off-by: Russell King

ARM: reduce visibility of dmac_* functions

2015-08-01T21:25:04+00:00

The dmac_* functions are private to the ARM DMA API implementation, and
should not be used by drivers.  In order to discourage their use, remove
their prototypes and macros from asm/*.h.

We have to leave dmac_flush_range() behind as Exynos and MSM IOMMU code
use these; once these sites are fixed, this can be moved also.

Signed-off-by: Russell King

ARM: 8380/1: bpf: fix NOMMU build

2015-05-27T23:29:22+00:00

arch/arm/net/built-in.o: In function `bpf_jit_compile':
:(.text+0x2758): undefined reference to `set_memory_ro'
arch/arm/net/built-in.o: In function `bpf_jit_free':
:(.text+0x27ac): undefined reference to `set_memory_rw'

Signed-off-by: Arnd Bergmann 
Signed-off-by: Russell King

ARM: mm: allow text and rodata sections to be read-only

2014-10-16T21:38:54+00:00

This introduces CONFIG_DEBUG_RODATA, making kernel text and rodata
read-only. Additionally, this splits rodata from text so that rodata can
also be NX, which may lead to wasted memory when aligning to SECTION_SIZE.
The read-only areas are made writable during ftrace updates and kexec.

Signed-off-by: Kees Cook 
Tested-by: Laura Abbott 
Acked-by: Nicolas Pitre

ARM: 8177/1: cacheflush: Fix v7_exit_coherency_flush exynos build breakage on ARMv6

2014-09-30T15:55:22+00:00

This fixes build breakage of platsmp.c if ARMv6 was chosen for compile
time options (e.g. by building allmodconfig):

$ make allmodconfig
$ make
  CC      arch/arm/mach-exynos/platsmp.o
/tmp/ccdQM0Eg.s: Assembler messages:
/tmp/ccdQM0Eg.s:432: Error: selected processor does not support ARM mode `isb '
/tmp/ccdQM0Eg.s:437: Error: selected processor does not support ARM mode `isb '
/tmp/ccdQM0Eg.s:438: Error: selected processor does not support ARM mode `dsb '
make[1]: *** [arch/arm/mach-exynos/platsmp.o] Error 1

The error was introduced in commit "ARM: EXYNOS: Move code from
hotplug.c to platsmp.c".  Previously code using
v7_exit_coherency_flush() macro was built with '-march=armv7-a' flag but
this flag dissapeared during the movement.

Fix this by annotating the v7_exit_coherency_flush() asm code with
armv7-a architecture.

Signed-off-by: Krzysztof Kozlowski 
Reported-by: Mark Brown 
Acked-by: Nicolas Pitre 
Signed-off-by: Kukjin Kim 
Signed-off-by: Russell King