linux/arch/nds32
Peter Zijlstra e7fd28a706 asm-generic/tlb, arch: Provide generic VIPT cache flush
The one obvious thing SH and ARM want is a sensible default for
tlb_start_vma(). (also: https://lkml.org/lkml/2004/1/15/6 )

Avoid all VIPT architectures providing their own tlb_start_vma()
implementation and rely on architectures to provide a no-op
flush_cache_range() when it is not relevant.

This patch makes tlb_start_vma() default to flush_cache_range(), which
should be right and sufficient. The only exceptions that I found where
(oddly):

  - m68k-mmu
  - sparc64
  - unicore

Those architectures appear to have flush_cache_range(), but their
current tlb_start_vma() does not call it.

No change in behavior intended.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nick Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-04-03 10:32:41 +02:00
..
boot nds32: Perf porting 2018-11-06 18:01:40 +08:00
configs fscrypt: remove filesystem specific build config option 2019-01-23 23:56:43 -05:00
include asm-generic/tlb, arch: Provide generic VIPT cache flush 2019-04-03 10:32:41 +02:00
kernel get rid of legacy 'get_ds()' function 2019-03-04 10:50:14 -08:00
lib nds32: Fix the symbols undefined issue by exporting them. 2018-05-23 13:26:20 +08:00
math-emu nds32: support denormalized result through FP emulator 2018-11-22 18:13:27 +08:00
mm treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
Kconfig 32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option 2019-02-19 10:10:05 +01:00
Kconfig.cpu nds32: support hardware prefetcher 2018-11-22 18:13:51 +08:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile nds32: remove unneeded code in arch/nds32/Makefile 2019-01-17 23:42:37 +09:00