From: "Alastair D'Silva" <alastair@au1.ibm.com>
To: alastair@d-silva.org
Cc: Michal Hocko <mhocko@suse.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
David Hildenbrand <david@redhat.com>,
linux-kernel@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Paul Mackerras <paulus@samba.org>, Qian Cai <cai@lca.pw>,
Thomas Gleixner <tglx@linutronix.de>,
linuxppc-dev@lists.ozlabs.org,
Andrew Morton <akpm@linux-foundation.org>,
Allison Randal <allison@lohutok.net>
Subject: [PATCH v2 0/6] powerpc: convert cache asm to C
Date: Tue, 3 Sep 2019 15:23:54 +1000 [thread overview]
Message-ID: <20190903052407.16638-1-alastair@au1.ibm.com> (raw)
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
next reply other threads:[~2019-09-03 5:27 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-03 5:23 Alastair D'Silva [this message]
2019-09-03 5:23 ` [PATCH v2 1/6] powerpc: Allow flush_icache_range to work across ranges >4GB Alastair D'Silva
2019-09-14 7:46 ` Christophe Leroy
2019-09-16 3:25 ` Alastair D'Silva
2019-09-03 5:23 ` [PATCH v2 2/6] powerpc: define helpers to get L1 icache sizes Alastair D'Silva
2019-09-03 5:23 ` [PATCH v2 3/6] powerpc: Convert flush_icache_range & friends to C Alastair D'Silva
2019-09-03 6:08 ` Christophe Leroy
2019-09-03 11:25 ` Michael Ellerman
2019-09-04 3:23 ` Alastair D'Silva
2019-09-04 13:35 ` Segher Boessenkool
2019-09-03 13:04 ` Segher Boessenkool
2019-09-03 14:28 ` Christophe Leroy
2019-09-03 16:04 ` Segher Boessenkool
2019-09-03 17:05 ` Christophe Leroy
2019-09-03 18:31 ` Segher Boessenkool
2019-09-03 20:11 ` Gabriel Paubert
2019-09-04 3:42 ` Alastair D'Silva
2019-09-04 3:36 ` Alastair D'Silva
2019-09-03 5:23 ` [PATCH v2 4/6] powerpc: Chunk calls to flush_dcache_range in arch_*_memory Alastair D'Silva
2019-09-03 6:19 ` Christophe Leroy
2019-09-03 6:25 ` Alastair D'Silva
2019-09-03 6:51 ` Christophe Leroy
2019-09-04 4:11 ` Alastair D'Silva
2019-09-03 5:23 ` [PATCH v2 5/6] powerpc: Remove 'extern' from func prototypes in cache headers Alastair D'Silva
2019-09-03 6:21 ` Christophe Leroy
2019-09-03 5:24 ` [PATCH v2 6/6] powerpc: Don't flush caches when adding memory Alastair D'Silva
2019-09-03 6:23 ` Christophe Leroy
2019-09-03 6:27 ` Alastair D'Silva
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