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Date: Sat, 4 Sep 2021 20:20:23 -0700
From: Vineet Gupta <vgupta@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: lkml <linux-kernel@...r.kernel.org>,
arcml <linux-snps-arc@...ts.infradead.org>,
Randy Dunlap <rdunlap@...radead.org>,
Changcheng Deng <deng.changcheng@....com.cn>
Subject: [GIT PULL] ARC changes for 5.15-rc1
Hi Linus,
Finally a big pile of changes for ARC (atomics/mm). These are from our
internal arc64 tree, preparing mainline for eventual arc64 support. I'm
spreading them to avoid tsunami of patches in one release. Please pull.
Thx,
-Vineet
--------------->
The following changes since commit e22ce8eb631bdc47a4a4ea7ecf4e4ba499db4f93:
Linux 5.14-rc7 (2021-08-22 14:24:56 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git/
tags/arc-5.15-rc1
for you to fetch changes up to 56809a28d45fcad94b28cfd614600568c0d46545:
ARC: mm: vmalloc sync from kernel to user table to update PMD ...
(2021-08-26 13:43:19 -0700)
----------------------------------------------------------------
ARC changes for v5.15-rc1
- MM rework
+ Implementing up to 4 paging levels (needed in MMUv6)
+ Enable STRICT_MM_TYPECHECK
+ switch pgtable_t back to struct page *
- Atomics rework / implementing relaxed accessors
- Retiring support for legacy ARC750 cores and MMUv1,v2
- A few other build errors, typos
----------------------------------------------------------------
Changcheng Deng (1):
arch/arc/kernel/: fix misspellings using codespell tool
Randy Dunlap (1):
ARC: export clear_user_page() for modules
Vineet Gupta (31):
ARC: atomics: disintegrate header
ARC: atomic: !LLSC: remove hack in atomic_set() for for UP
ARC: atomic: !LLSC: use int data type consistently
ARC: atomic64: LLSC: elide unused atomic_{and,or,xor,andnot}_return
ARC: atomics: implement relaxed variants
ARC: switch to generic bitops
ARC: bitops: fls/ffs to take int (vs long) per asm-generic defines
ARC: xchg: !LLSC: remove UP micro-optimization/hack
ARC: cmpxchg/xchg: rewrite as macros to make type safe
ARC: cmpxchg/xchg: implement relaxed variants (LLSC config only)
ARC: atomic_cmpxchg/atomic_xchg: implement relaxed variants
ARC: retire ARC750 support
ARC: retire MMUv1 and MMUv2 support
ARC: mm: use SCRATCH_DATA0 register for caching pgdir in ARCv2 only
ARC: mm: remove tlb paranoid code
ARC: mm: move mmu/cache externs out to setup.h
ARC: mm: Fixes to allow STRICT_MM_TYPECHECKS
ARC: mm: Enable STRICT_MM_TYPECHECKS
ARC: ioremap: use more commonly used PAGE_KERNEL based uncached flag
ARC: mm: pmd_populate* to use the canonical set_pmd (and drop
pmd_set)
ARC: mm: non-functional code movement/cleanup
ARC: mm: move MMU specific bits out of ASID allocator
ARC: mm: move MMU specific bits out of entry code ...
ARC: mm: disintegrate mmu.h (arcv2 bits out)
ARC: mm: disintegrate pgtable.h into levels and flags
ARC: mm: hack to allow 2 level build with 4 level code
ARC: mm: switch pgtable_t back to struct page *
ARC: mm: switch to asm-generic/pgalloc.h
ARC: mm: support 3 levels of page tables
ARC: mm: support 4 levels of page tables
ARC: mm: vmalloc sync from kernel to user table to update PMD ...
arch/arc/Kconfig | 41 +--
arch/arc/include/asm/atomic-llsc.h | 97 +++++++
arch/arc/include/asm/atomic-spinlock.h | 102 +++++++
arch/arc/include/asm/atomic.h | 444 ++----------------------------
arch/arc/include/asm/atomic64-arcv2.h | 250 +++++++++++++++++
arch/arc/include/asm/bitops.h | 188 +------------
arch/arc/include/asm/cache.h | 4 -
arch/arc/include/asm/cmpxchg.h | 233 ++++++++--------
arch/arc/include/asm/entry-compact.h | 8 -
arch/arc/include/asm/hugepage.h | 8 -
arch/arc/include/asm/mmu-arcv2.h | 103 +++++++
arch/arc/include/asm/mmu.h | 87 +-----
arch/arc/include/asm/mmu_context.h | 28 +-
arch/arc/include/asm/page.h | 74 +++--
arch/arc/include/asm/pgalloc.h | 81 ++----
arch/arc/include/asm/pgtable-bits-arcv2.h | 149 ++++++++++
arch/arc/include/asm/pgtable-levels.h | 189 +++++++++++++
arch/arc/include/asm/pgtable.h | 339 +----------------------
arch/arc/include/asm/processor.h | 2 +-
arch/arc/include/asm/setup.h | 12 +-
arch/arc/include/asm/smp.h | 14 -
arch/arc/include/asm/tlb-mmu1.h | 101 -------
arch/arc/kernel/entry-arcv2.S | 1 +
arch/arc/kernel/entry.S | 7 +-
arch/arc/kernel/intc-compact.c | 2 +-
arch/arc/kernel/smp.c | 4 +-
arch/arc/kernel/stacktrace.c | 2 +-
arch/arc/mm/cache.c | 112 +-------
arch/arc/mm/fault.c | 20 +-
arch/arc/mm/init.c | 5 +
arch/arc/mm/ioremap.c | 3 +-
arch/arc/mm/tlb.c | 268 +++---------------
arch/arc/mm/tlbex.S | 84 ++----
33 files changed, 1226 insertions(+), 1836 deletions(-)
create mode 100644 arch/arc/include/asm/atomic-llsc.h
create mode 100644 arch/arc/include/asm/atomic-spinlock.h
create mode 100644 arch/arc/include/asm/atomic64-arcv2.h
create mode 100644 arch/arc/include/asm/mmu-arcv2.h
create mode 100644 arch/arc/include/asm/pgtable-bits-arcv2.h
create mode 100644 arch/arc/include/asm/pgtable-levels.h
delete mode 100644 arch/arc/include/asm/tlb-mmu1.h
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