[PATCH v5 0/8] arm64: head.S cleanup

Ard Biesheuvel ard.biesheuvel at linaro.org
Wed Mar 18 07:55:19 PDT 2015

This some janitorial work on head.S, just stuff I noticed when making
changes to it for other reasons.

This still needs acks on patches #2, #5 and #8

Changes since v4:
- included Marc Zyngier's struct cpu_table removal patch
- dropped __lookup_processor_type_data patch now that Marc has nuked the
  whole thing
- added patch to merge __enable_mmu() and __turn_mmu_on() into a single
  function, as there is no need for funky trampoline stuff when you have
  two non-overlapping TTBRs
- added patch to remove __calc_phys_offset and use PC-relative references or
  absolute (linker generated) references as appropriate
- added patch to complain when x1/x2/x3 are non-zero, which helps ensure that
  we will ever be able to use them for anything
- added R-b's

Changes since v3:
- added similar patch for secondary_holding_pen_release
- fixed bug in patch #1 (ldr_l)

Changes since v2:
- added separate patch to add macros for adrp/add, adrp/ldr and adrp/str
- added R-b's

Ard Biesheuvel (7):
  arm64: add macros for common adrp usages
  arm64: remove processor_id
  arm64: remove __switch_data object from head.S
  arm64: use PC-relative reference for secondary_holding_pen_release
  arm64: merge __enable_mmu and __turn_mmu_on
  arm64: remove __calc_phys_offset
  arm64: enforce x1|x2|x3 == 0 upon kernel entry as per boot protocol

Marc Zyngier (1):
  arm64: Get rid of struct cpu_table

 arch/arm64/include/asm/assembler.h |  29 ++++++
 arch/arm64/include/asm/cputable.h  |  30 ------
 arch/arm64/kernel/Makefile         |   2 +-
 arch/arm64/kernel/asm-offsets.c    |   4 -
 arch/arm64/kernel/cputable.c       |  33 ------
 arch/arm64/kernel/head.S           | 203 +++++++------------------------------
 arch/arm64/kernel/setup.c          |  34 +++----
 7 files changed, 83 insertions(+), 252 deletions(-)
 delete mode 100644 arch/arm64/include/asm/cputable.h
 delete mode 100644 arch/arm64/kernel/cputable.c


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