[PATCH 0/4] kuser updates for ARM-only vs Thumb
Russell King - ARM Linux
linux at armlinux.org.uk
Thu Feb 9 04:17:57 PST 2017
A while back, an issue was raised about the return instruction used
in the kuser page when building an ARMv4 and later environment.
In order to fix this, I suggested building the kuser code for both
variants and selecting the appropriate version at run time. This
seemed to be a simple solution, but due to the fix-ups and need to
build the appropriate version for the Kconfig options selected,
turned out to be not quite as trivial as I hoped.
Nevertheless, this patch series provides that solution.
As a side effect of this, the first patch is one which should be
merged irrespective of the remainder as it provides a useful cleanup
to the large number of dependencies for the ARM_THUMB option.
arch/arm/kernel/Makefile | 10 +++
arch/arm/kernel/entry-armv.S | 198 -------------------------------------------
arch/arm/kernel/kuser-t.S | 13 +++
arch/arm/kernel/kuser-v4.S | 11 +++
arch/arm/kernel/kuser.S | 196 ++++++++++++++++++++++++++++++++++++++++++
arch/arm/kernel/traps.c | 37 +++++++-
arch/arm/mm/Kconfig | 31 +++++--
7 files changed, 289 insertions(+), 207 deletions(-)
create mode 100644 arch/arm/kernel/kuser-t.S
create mode 100644 arch/arm/kernel/kuser-v4.S
create mode 100644 arch/arm/kernel/kuser.S
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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