kernel/arch/csky/include/asm/tlb.h, branch linux-rolling-stableHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-rolling-stable2022-07-21T17:50:13Zcsky/tlb: Remove tlb_flush() define2022-07-21T17:50:13ZPeter Zijlstrapeterz@infradead.org2022-07-08T07:18:04Zurn:sha1:1d7708e75c49d08392884a08feeebaa3f9d80703
The previous patch removed the tlb_flush_end() implementation which
used tlb_flush_range(). This means:
- csky did double invalidates, a range invalidate per vma and a full
invalidate at the end
- csky actually has range invalidates and as such the generic
tlb_flush implementation is more efficient for it.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Tested-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mmu_gather: Remove per arch tlb_{start,end}_vma()2022-07-21T17:50:13ZPeter Zijlstrapeterz@infradead.org2022-07-08T07:18:03Zurn:sha1:1e9fdf21a4339b102539f476a9842e7526c01939
Scattered across the archs are 3 basic forms of tlb_{start,end}_vma().
Provide two new MMU_GATHER_knobs to enumerate them and remove the per
arch tlb_{start,end}_vma() implementations.
- MMU_GATHER_NO_FLUSH_CACHE indicates the arch has flush_cache_range()
but does *NOT* want to call it for each VMA.
- MMU_GATHER_MERGE_VMAS indicates the arch wants to merge the
invalidate across multiple VMAs if possible.
With these it is possible to capture the three forms:
1) empty stubs;
select MMU_GATHER_NO_FLUSH_CACHE and MMU_GATHER_MERGE_VMAS
2) start: flush_cache_range(), end: empty;
select MMU_GATHER_MERGE_VMAS
3) start: flush_cache_range(), end: flush_tlb_range();
default
Obviously, if the architecture does not have flush_cache_range() then
it also doesn't need to select MMU_GATHER_NO_FLUSH_CACHE.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
csky: Fixup compile error2021-02-27T14:04:14ZGuo Renguoren@linux.alibaba.com2021-02-27T14:00:35Zurn:sha1:6607aa6f6b68fc9b5955755f1b1be125cf2a9d03
: error: C++ style comments are not allowed in ISO C90
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
^
error: (this will be reported only once per input file)
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
csky: add missing brackets in a macro for tlb.h2019-09-07T07:28:05ZJason Gunthorpejgg@mellanox.com2019-09-02T05:47:05Zurn:sha1:6bdf3b0aeead8edf91306dd60dcf676c257aad30
As an earlier patch made the macro argument more complicated, compilation
now fails with:
In file included from mm/madvise.c:30:
mm/madvise.c: In function 'madvise_free_single_vma':
arch/csky/include/asm/tlb.h:11:11: error:
invalid type argument of '->' (have 'struct mmu_gather')
Link: https://lore.kernel.org/r/20190901193601.GB5208@mellanox.com
Fixes: 923bfc561e75 ("pagewalk: separate function pointers from iterator data")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
csky: Cache and TLB routines2018-10-25T15:36:19ZGuo Renren_guo@c-sky.com2018-09-05T06:25:10Zurn:sha1:00a9730e1007c6cc87a7c78af2f24a4105d616ee
This patch adds cache and tlb sync codes for abiv1 & abiv2.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>