linux.git/arch/arm/include/asm/memory.h, branch v5.6

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

linux/const.h: move UL() macro to include/linux/const.h

2018-04-11T17:28:38+00:00

ARM, ARM64 and UniCore32 duplicate the definition of UL():

  #define UL(x) _AC(x, UL)

This is not actually arch-specific, so it will be useful to move it to a
common header.  Currently, we only have the uapi variant for
linux/const.h, so I am creating include/linux/const.h.

I also added _UL(), _ULL() and ULL() because _AC() is mostly used in
the form either _AC(..., UL) or _AC(..., ULL).  I expect they will be
replaced in follow-up cleanups.  The underscore-prefixed ones should
be used for exported headers.

Link: http://lkml.kernel.org/r/1519301715-31798-4-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada 
Acked-by: Guan Xuetao 
Acked-by: Catalin Marinas 
Acked-by: Russell King 
Cc: David Howells 
Cc: Geert Uytterhoeven 
Cc: Will Deacon 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ARM: 8739/1: NOMMU: Setup VBAR/Hivecs for secondaries cores

2018-01-21T15:32:23+00:00

With switch to dynamic exception base address setting, VBAR/Hivecs
set only for boot CPU, but secondaries stay unaware of that. That
might lead to weird effects when trying up to bring up secondaries.

Fixes: ad475117d201 ("ARM: 8649/2: nommu: remove Hivecs configuration is asm")
Signed-off-by: Vladimir Murzin 
Acked-by: afzal mohammed 
Signed-off-by: Russell King

ARM: 8648/2: nommu: display vectors base

2017-02-28T11:06:14+00:00

VECTORS_BASE displays the exception base address. Now on no-MMU as
the exception base address is dynamically estimated, define
VECTORS_BASE to the variable holding it.

As it is the case, limit VECTORS_BASE constant definition to MMU.

Suggested-by: Russell King 
Signed-off-by: afzal mohammed 
Tested-by: Vladimir Murzin 
Signed-off-by: Russell King

ARM: 8646/1: mmu: decouple VECTORS_BASE from Kconfig

2017-02-28T11:06:12+00:00

For MMU configurations, VECTORS_BASE is always 0xffff0000, a macro
definition will suffice.

For no-MMU, exception base address is dynamically determined in
subsequent patches. To preserve bisectability, now make the
macro applicable for no-MMU scenario too.

Thanks to 0-DAY kernel test infrastructure that found the
bisectability issue. This macro will be restricted to MMU case upon
dynamically determining exception base address for no-MMU.

Once exception address is handled dynamically for no-MMU,
VECTORS_BASE can be removed from Kconfig.

Signed-off-by: afzal mohammed 
Tested-by: Vladimir Murzin 
Signed-off-by: Russell King

ARM: 8640/1: Add support for CONFIG_DEBUG_VIRTUAL

2017-02-28T11:06:09+00:00

x86 has an option: CONFIG_DEBUG_VIRTUAL to do additional checks on
virt_to_phys calls. The goal is to catch users who are calling
virt_to_phys on non-linear addresses immediately. This includes caller
using __virt_to_phys() on image addresses instead of __pa_symbol(). This
is a generally useful debug feature to spot bad code (particulary in
drivers).

Acked-by: Russell King 
Acked-by: Laura Abbott 
Signed-off-by: Florian Fainelli 
Signed-off-by: Russell King

ARM: 8639/1: Define KERNEL_START and KERNEL_END

2017-02-28T11:05:46+00:00

In preparation for adding CONFIG_DEBUG_VIRTUAL support, define a set of
common constants: KERNEL_START and KERNEL_END which abstract
CONFIG_XIP_KERNEL vs. !CONFIG_XIP_KERNEL. Update the code where
relevant.

Acked-by: Russell King 
Signed-off-by: Florian Fainelli 
Signed-off-by: Russell King

ARM: 8589/1: asm/memory.h: remove dead definitions

2016-08-12T15:47:02+00:00

The last ad-hoc __phys_to_virt definition was removed in commit fd0053c9
("ARM: realview: remove sparsemem hack"). Therefore we can remove the
unneeded definitions and unduplicate the virt_to_pfn macro from
asm/memory.h.

Signed-off-by: Nicolas Pitre 
Signed-off-by: Russell King

ARM: provide arm_has_idmap_alias() helper

2016-05-03T10:17:28+00:00

Provide a helper to indicate whether we need to perform special handling
for boot identity mapping aliases or not.

Signed-off-by: Russell King 
Reviewed-by: Pratyush Anand

ARM: provide improved virt_to_idmap() functionality

2016-05-03T10:13:54+00:00

For kexec, we need more functionality from the IDMAP system.  We need to
be able to convert physical addresses to their identity mappped versions
as well as virtual addresses.

Convert the existing arch_virt_to_idmap() to deal with physical
addresses instead.

Acked-by: Santosh Shilimkar 
Signed-off-by: Russell King