linux-kernel - [PATCH 0/6] powerpc: convert cache asm to C

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Message-Id: <20190815041057.13627-1-alastair@au1.ibm.com>
Date:   Thu, 15 Aug 2019 14:10:45 +1000
From:   "Alastair D'Silva" <alastair@....ibm.com>
To:     alastair@...ilva.org
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@....fr>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Qian Cai <cai@....pw>, Nicholas Piggin <npiggin@...il.com>,
        Allison Randal <allison@...utok.net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        David Hildenbrand <david@...hat.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/6] powerpc: convert cache asm to C

From: Alastair D'Silva <alastair@...ilva.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

 arch/powerpc/include/asm/cache.h      |  63 +++++++++-----
 arch/powerpc/include/asm/cacheflush.h |  49 ++++++-----
 arch/powerpc/kernel/misc_32.S         | 117 --------------------------
 arch/powerpc/kernel/misc_64.S         |  97 ---------------------
 arch/powerpc/mm/mem.c                 |  80 +++++++++++++++++-
 5 files changed, 146 insertions(+), 260 deletions(-)

-- 
2.21.0