OpenCloudOS-Kernel/arch/powerpc
Peter Zijlstra 1e9fdf21a4 mmu_gather: Remove per arch tlb_{start,end}_vma()
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>
2022-07-21 10:50:13 -07:00
..
boot powerpc updates for 5.19 2022-05-28 11:27:17 -07:00
configs eth: de4x5: remove support for Generic DECchip & DIGITAL EtherWORKS PCI/EISA 2022-05-23 11:43:51 +01:00
crypto powerpc: fix typos in comments 2022-05-05 22:12:44 +10:00
include mmu_gather: Remove per arch tlb_{start,end}_vma() 2022-07-21 10:50:13 -07:00
kernel powerpc/prom_init: Fix kernel config grep 2022-06-24 13:47:26 +10:00
kexec powerpc/kasan: Mark more real-mode code as not to be instrumented 2022-05-29 10:30:42 +10:00
kvm powerpc: Fix all occurences of "the the" 2022-05-22 15:59:43 +10:00
lib powerpc updates for 5.19 2022-05-28 11:27:17 -07:00
math-emu
mm powerpc/memhotplug: Add add_pages override for PPC 2022-06-29 20:43:16 +10:00
net powerpc/inst: Remove PPC_INST_BL 2022-05-22 15:58:27 +10:00
perf powerpc/perf: Fix the threshold compare group constraint for power9 2022-05-22 15:58:30 +10:00
platforms powerpc/powernv: delay rng platform device creation until later in boot 2022-07-04 21:11:47 +10:00
purgatory
sysdev powerpc/xive/spapr: correct bitmap allocation size 2022-06-24 12:40:38 +10:00
tools powerpc/64: Add UADDR64 relocation support 2022-03-09 21:47:53 +11:00
xmon More power management updates for 5.19-rc1 2022-05-30 11:37:26 -07:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig mmu_gather: Remove per arch tlb_{start,end}_vma() 2022-07-21 10:50:13 -07:00
Kconfig.debug powerpc: Book3S 64-bit outline-only KASAN support 2022-05-22 15:58:29 +10:00
Makefile powerpc updates for 5.19 2022-05-28 11:27:17 -07:00
Makefile.postlink