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    Subject[PATCH v2 0/6] powerpc: convert cache asm to C
    Date
    From: Alastair D'Silva <alastair@d-silva.org>

    This series addresses a few issues discovered in how we flush caches:
    1. Flushes were truncated at 4GB, so larger flushes were incorrect.
    2. Flushing the dcache in arch_add_memory was unnecessary

    This series also converts much of the cache assembler to C, with the
    aim of making it easier to maintain.

    Alastair D'Silva (6):
    powerpc: Allow flush_icache_range to work across ranges >4GB
    powerpc: define helpers to get L1 icache sizes
    powerpc: Convert flush_icache_range & friends to C
    powerpc: Chunk calls to flush_dcache_range in arch_*_memory
    powerpc: Remove 'extern' from func prototypes in cache headers
    powerpc: Don't flush caches when adding memory

    Changelog:
    V2:
    - Replace C implementation of flush_dcache_icache_phys() with
    inline assembler authored by Christophe Leroy
    - Add memory clobbers for iccci implementation
    - Give __flush_dcache_icache a real implementation, it can't
    just be a wrapper around flush_icache_range()
    - Remove PPC64_CACHES from misc_64.S
    - Replace code duplicating clean_dcache_range() in
    flush_icache_range() with a call to clean_dcache_range()
    - Replace #ifdef CONFIG_44x with IS_ENABLED(...) in
    flush_icache_cange()
    - Use 1GB chunks instead of 16GB in arch_*_memory


    arch/powerpc/include/asm/cache.h | 63 ++++++----
    arch/powerpc/include/asm/cacheflush.h | 37 +++---
    arch/powerpc/kernel/misc_32.S | 117 -------------------
    arch/powerpc/kernel/misc_64.S | 102 -----------------
    arch/powerpc/mm/mem.c | 159 +++++++++++++++++++++++++-
    5 files changed, 213 insertions(+), 265 deletions(-)

    --
    2.21.0

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