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

[mark.rutland@arm.com (Mark Rutland)]

On Wed, Mar 18, 2015 at 02:55:19PM +0000, Ard Biesheuvel wrote:
> 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

I've given each patch of the series series a spin on Juno (using
EFI+PSCI) and a model (using the bootwwapper + spin-table). For patches
1-7 the code looks sane, I see no build regressions on defconfig, and
everything works, so for those feel free to add:

Tested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>

I have some comments against patch 8 that will need to be fixed up, so
I'll provide tags for that separately.

Mark.

> 
> 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
> 
> -- 
> 1.8.3.2
> 
>