linux-toradex.git/arch/sh/Kconfig, branch v4.3.1

kexec: split kexec_load syscall from kexec core code

2015-09-10T20:29:01+00:00

There are two kexec load syscalls, kexec_load another and kexec_file_load.
 kexec_file_load has been splited as kernel/kexec_file.c.  In this patch I
split kexec_load syscall code to kernel/kexec.c.

And add a new kconfig option KEXEC_CORE, so we can disable kexec_load and
use kexec_file_load only, or vice verse.

The original requirement is from Ted Ts'o, he want kexec kernel signature
being checked with CONFIG_KEXEC_VERIFY_SIG enabled.  But kexec-tools use
kexec_load syscall can bypass the checking.

Vivek Goyal proposed to create a common kconfig option so user can compile
in only one syscall for loading kexec kernel.  KEXEC/KEXEC_FILE selects
KEXEC_CORE so that old config files still work.

Because there's general code need CONFIG_KEXEC_CORE, so I updated all the
architecture Kconfig with a new option KEXEC_CORE, and let KEXEC selects
KEXEC_CORE in arch Kconfig.  Also updated general kernel code with to
kexec_load syscall.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Dave Young 
Cc: Eric W. Biederman 
Cc: Vivek Goyal 
Cc: Petr Tesarik 
Cc: Theodore Ts'o 
Cc: Josh Boyer 
Cc: David Howells 
Cc: Geert Uytterhoeven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sh: expose number of page table levels

2015-04-14T23:49:02+00:00

We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.

Signed-off-by: Kirill A. Shutemov 
Cc: linux-sh@vger.kernel.org
Tested-by: Guenter Roeck 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sh: build superh without CONFIG_EXPERT

2015-02-10T22:30:28+00:00

What sh4 actually wants is HAVE_PATA_PLATFORM, so select that instead.

Signed-off-by: Rob Landley 
Acked-by: Randy Dunlap 
Acked-by: Geert Uytterhoeven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

PM: Eliminate CONFIG_PM_RUNTIME

2014-12-19T21:55:06+00:00

Having switched over all of the users of CONFIG_PM_RUNTIME to use
CONFIG_PM directly, turn the latter into a user-selectable option
and drop the former entirely from the tree.

Signed-off-by: Rafael J. Wysocki 
Reviewed-by: Ulf Hansson 
Acked-by: Kevin Hilman

gcov: enable GCOV_PROFILE_ALL from ARCH Kconfigs

2014-12-13T20:42:51+00:00

Following the suggestions from Andrew Morton and Stephen Rothwell,
Dont expand the ARCH list in kernel/gcov/Kconfig. Instead,
define a ARCH_HAS_GCOV_PROFILE_ALL bool which architectures
can enable.

set ARCH_HAS_GCOV_PROFILE_ALL on Architectures where it was
previously allowed + ARM64 which I tested.

Signed-off-by: Riku Voipio 
Cc: Peter Oberparleiter 
Cc: Stephen Rothwell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

PM / Kconfig: Do not select PM directly from Kconfig files

2014-12-03T23:50:53+00:00

It is not valid to select CONFIG_PM directly without selecting
CONFIG_PM_SLEEP or CONFIG_PM_RUNTIME too, because that breaks
dependencies (ia64 does that) and it is not necessary to select
CONFIG_PM directly if CONFIG_PM_SLEEP or CONFIG_PM_RUNTIME is
selected, because CONFIG_PM will be set automatically in that
case (sh does that).

Fix those mistakes.

Acked-by: Geert Uytterhoeven 
Reviewed-by: Kevin Hilman 
Signed-off-by: Rafael J. Wysocki

kexec: remove CONFIG_KEXEC dependency on crypto

2014-08-29T23:28:16+00:00

New system call depends on crypto.  As it did not have a separate config
option, CONFIG_KEXEC was modified to select CRYPTO and CRYPTO_SHA256.

But now previous patch introduced a new config option for new syscall.
So CONFIG_KEXEC does not require crypto.  Remove that dependency.

Signed-off-by: Vivek Goyal 
Cc: Eric Biederman 
Cc: H. Peter Anvin 
Cc: Shaun Ruffell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sh: intc: Confine SH_INTC to platforms that need it

2014-08-22T03:28:16+00:00

Currently the sh-intc driver is compiled on all SuperH and
non-multiplatform SH-Mobile platforms, while it's only used on a limited
number of platforms:
  - SuperH: SH2(A), SH3(A), SH4(A)(L) (all but SH5)
  - ARM: sh7372, sh73a0

Drop the "default y" on SH_INTC, make all CPU platforms that use it
select it, and protect all sub-options by "if SH_INTC" to fix this.

Signed-off-by: Geert Uytterhoeven 
Acked-by: Magnus Damm 
Signed-off-by: Simon Horman

kexec: load and relocate purgatory at kernel load time

2014-08-08T22:57:32+00:00

Load purgatory code in RAM and relocate it based on the location.
Relocation code has been inspired by module relocation code and purgatory
relocation code in kexec-tools.

Also compute the checksums of loaded kexec segments and store them in
purgatory.

Arch independent code provides this functionality so that arch dependent
bootloaders can make use of it.

Helper functions are provided to get/set symbol values in purgatory which
are used by bootloaders later to set things like stack and entry point of
second kernel etc.

Signed-off-by: Vivek Goyal 
Cc: Borislav Petkov 
Cc: Michael Kerrisk 
Cc: Yinghai Lu 
Cc: Eric Biederman 
Cc: H. Peter Anvin 
Cc: Matthew Garrett 
Cc: Greg Kroah-Hartman 
Cc: Dave Young 
Cc: WANG Chao 
Cc: Baoquan He 
Cc: Andy Lutomirski 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sh: ftrace: Remove check of obsolete variable function_trace_stop

2014-07-18T17:57:04+00:00

Nothing sets function_trace_stop to disable function tracing anymore.
Remove the check for it in the arch code.

[ Please test this on your arch ]

Cc: Matt Fleming 
Cc: Paul Mundt 
Signed-off-by: Steven Rostedt