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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-17 09:43:59 +08:00
linux-next/arch/xtensa
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 xtensa: rename BUILTIN_DTB to BUILTIN_DTB_SOURCE 2019-01-26 02:02:16 -08:00
configs xtensa: rename BUILTIN_DTB to BUILTIN_DTB_SOURCE 2019-01-26 02:02:16 -08:00
include asm-generic/tlb, arch: Provide generic VIPT cache flush 2019-04-03 10:32:41 +02:00
kernel Xtensa updates for v5.1: 2019-03-07 13:27:53 -08:00
lib xtensa: add support for KASAN 2017-12-16 22:37:12 -08:00
mm treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
oprofile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
platforms memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
variants xtensa: add test_kc705_be variant 2018-08-20 12:34:45 -07:00
Kconfig DMA mapping updates for 5.1 2019-03-10 11:54:48 -07:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile xtensa: generate uapi header and syscall table header files 2018-12-02 23:45:41 -08:00