It would be nice to be able to modify these or add a hook without updating all architectures, most of which just use noops. There was some discussion around the lazy tlb switching vs membarrier barriers that may have needed changes here to fix (addition of an exit_lazy_tlb() function). I don't know whether that's what we will end up doing, but these are the prep patches I did for it which are still a good cleanup so I would like to mege them. All arch patches depend on patch 1. If everybody is fine with it then Arnd could merge that one in this merge window then we do the rest of them in the next window? Thanks, Nick Nicholas Piggin (24): asm-generic: add generic versions of mmu context functions alpha: use asm-generic/mmu_context.h for no-op implementations arc: use asm-generic/mmu_context.h for no-op implementations arm: use asm-generic/mmu_context.h for no-op implementations arm64: use asm-generic/mmu_context.h for no-op implementations csky: use asm-generic/mmu_context.h for no-op implementations hexagon: use asm-generic/mmu_context.h for no-op implementations ia64: use asm-generic/mmu_context.h for no-op implementations m68k: use asm-generic/mmu_context.h for no-op implementations microblaze: use asm-generic/mmu_context.h for no-op implementations mips: use asm-generic/mmu_context.h for no-op implementations nds32: use asm-generic/mmu_context.h for no-op implementations nios2: use asm-generic/mmu_context.h for no-op implementations openrisc: use asm-generic/mmu_context.h for no-op implementations parisc: use asm-generic/mmu_context.h for no-op implementations powerpc: use asm-generic/mmu_context.h for no-op implementations riscv: use asm-generic/mmu_context.h for no-op implementations s390: use asm-generic/mmu_context.h for no-op implementations sh: use asm-generic/mmu_context.h for no-op implementations sparc: use asm-generic/mmu_context.h for no-op implementations um: use asm-generic/mmu_context.h for no-op implementations unicore32: use asm-generic/mmu_context.h for no-op implementations x86: use asm-generic/mmu_context.h for no-op implementations xtensa: use asm-generic/mmu_context.h for no-op implementations arch/alpha/include/asm/mmu_context.h | 12 ++--- arch/arc/include/asm/mmu_context.h | 16 +++--- arch/arm/include/asm/mmu_context.h | 26 ++------- arch/arm64/include/asm/mmu_context.h | 7 ++- arch/csky/include/asm/mmu_context.h | 8 ++- arch/hexagon/include/asm/mmu_context.h | 33 ++---------- arch/ia64/include/asm/mmu_context.h | 17 ++---- arch/m68k/include/asm/mmu_context.h | 47 +++------------- arch/microblaze/include/asm/mmu_context.h | 2 +- arch/microblaze/include/asm/mmu_context_mm.h | 8 +-- arch/microblaze/include/asm/processor.h | 3 -- arch/mips/include/asm/mmu_context.h | 11 ++-- arch/nds32/include/asm/mmu_context.h | 10 +--- arch/nios2/include/asm/mmu_context.h | 21 ++------ arch/nios2/mm/mmu_context.c | 1 + arch/openrisc/include/asm/mmu_context.h | 8 ++- arch/openrisc/mm/tlb.c | 2 + arch/parisc/include/asm/mmu_context.h | 12 ++--- arch/powerpc/include/asm/mmu_context.h | 22 +++----- arch/riscv/include/asm/mmu_context.h | 22 +------- arch/s390/include/asm/mmu_context.h | 9 ++-- arch/sh/include/asm/mmu_context.h | 7 ++- arch/sh/include/asm/mmu_context_32.h | 9 ---- arch/sparc/include/asm/mmu_context_32.h | 10 ++-- arch/sparc/include/asm/mmu_context_64.h | 10 ++-- arch/um/include/asm/mmu_context.h | 12 ++--- arch/unicore32/include/asm/mmu_context.h | 24 ++------- arch/x86/include/asm/mmu_context.h | 6 +++ arch/xtensa/include/asm/mmu_context.h | 11 ++-- arch/xtensa/include/asm/nommu_context.h | 26 +-------- include/asm-generic/mmu_context.h | 57 +++++++++++++++----- include/asm-generic/nommu_context.h | 19 +++++++ 32 files changed, 170 insertions(+), 318 deletions(-) create mode 100644 include/asm-generic/nommu_context.h -- 2.23.0
