[RFC PATCH v5 0/8] arm64: tlb: add support for TTL feature

Zhenyu Ye
2020-03-31T14:30:03Z

In order to reduce the cost of TLB invalidation, the ARMv8.4 TTL
feature allows TLBs to be issued with a level allowing for quicker
invalidation. This series provide support for this feature.

Patch 1 and Patch 2 was provided by Marc on his NV series[1] patches,
which detect the TTL feature and add __tlbi_level interface.
Patch 4-7 passes struct mmu_gather to flush_tlb_range, which can pass
the level of tlbi invalidations. Arm64 and power9 can benefit from this.
Patch 8 set the TTL field in arm64 by using the cleared_* values in
struct mmu_gather.

See patches for details, Thanks.

[1] https://lore.kernel.org/linux-arm-kernel/20200211174938.27809-1-maz@kernel.org/
[2] https://lore.kernel.org/linux-arm-kernel/7859561b-78b4-4a12-2642-3741d7d3e7b8@huawei.com/

--
ChangeList:
v1:
add support for TTL feature in arm64.

v2:
build the patch on Marc's NV series[1].

v3:
use vma->vm_flags to replace mm->context.flags.

v4:
add Marc's patches into my series.

v5:
pass struct mmu_gather to flush_tlb_range, then set the
TTL field by using infos in struct mmu_gather.

Marc Zyngier (2):
arm64: Detect the ARMv8.4 TTL feature
arm64: Add level-hinted TLB invalidation helper

Zhenyu Ye (6):
arm64: Add tlbi_user_level TLB invalidation helper
mm: tlb: Pass struct mmu_gather to flush_pmd_tlb_range
mm: tlb: Pass struct mmu_gather to flush_pud_tlb_range
mm: tlb: Pass struct mmu_gather to flush_hugetlb_tlb_range
mm: tlb: Pass struct mmu_gather to flush_tlb_range
arm64: tlb: Set the TTL field in flush_tlb_range

Documentation/core-api/cachetlb.rst | 8 ++-
arch/alpha/include/asm/tlbflush.h | 8 +--
arch/alpha/kernel/smp.c | 3 +-
arch/arc/include/asm/hugepage.h | 4 +-
arch/arc/include/asm/tlbflush.h | 11 ++--
arch/arc/mm/tlb.c | 8 +--
arch/arm/include/asm/tlbflush.h | 12 ++--
arch/arm/kernel/smp_tlb.c | 4 +-
arch/arm/mach-rpc/ecard.c | 8 ++-
arch/arm64/crypto/aes-glue.c | 1 -
arch/arm64/include/asm/cpucaps.h | 3 +-
arch/arm64/include/asm/sysreg.h | 1 +
arch/arm64/include/asm/tlb.h | 39 +++++++++++-
arch/arm64/include/asm/tlbflush.h | 63 +++++++++++++------
arch/arm64/kernel/cpufeature.c | 11 ++++
arch/arm64/mm/hugetlbpage.c | 10 ++-
arch/csky/include/asm/tlb.h | 2 +-
arch/csky/include/asm/tlbflush.h | 6 +-
arch/csky/mm/tlb.c | 4 +-
arch/hexagon/include/asm/tlbflush.h | 2 +-
arch/hexagon/mm/vm_tlb.c | 4 +-
arch/ia64/include/asm/tlbflush.h | 6 +-
arch/ia64/mm/tlb.c | 5 +-
arch/m68k/include/asm/tlbflush.h | 10 +--
arch/microblaze/include/asm/tlbflush.h | 5 +-
arch/mips/include/asm/hugetlb.h | 6 +-
arch/mips/include/asm/tlbflush.h | 9 +--
arch/mips/kernel/smp.c | 3 +-
arch/nds32/include/asm/tlbflush.h | 3 +-
arch/nios2/include/asm/tlbflush.h | 9 +--
arch/nios2/mm/tlb.c | 8 ++-
arch/openrisc/include/asm/tlbflush.h | 10 +--
arch/openrisc/kernel/smp.c | 2 +-
arch/parisc/include/asm/tlbflush.h | 2 +-
arch/parisc/kernel/cache.c | 13 +++-
arch/powerpc/include/asm/book3s/32/tlbflush.h | 4 +-
arch/powerpc/include/asm/book3s/64/tlbflush.h | 9 ++-
arch/powerpc/include/asm/nohash/tlbflush.h | 7 ++-
arch/powerpc/mm/book3s32/tlb.c | 6 +-
arch/powerpc/mm/book3s64/pgtable.c | 8 ++-
arch/powerpc/mm/book3s64/radix_tlb.c | 2 +-
arch/powerpc/mm/nohash/tlb.c | 6 +-
arch/riscv/include/asm/tlbflush.h | 7 ++-
arch/riscv/mm/tlbflush.c | 4 +-
arch/s390/include/asm/tlbflush.h | 5 +-
arch/sh/include/asm/tlbflush.h | 8 +--
arch/sh/kernel/smp.c | 2 +-
arch/sparc/include/asm/tlbflush_32.h | 2 +-
arch/sparc/include/asm/tlbflush_64.h | 3 +-
arch/sparc/mm/tlb.c | 5 +-
arch/um/include/asm/tlbflush.h | 6 +-
arch/um/kernel/tlb.c | 4 +-
arch/unicore32/include/asm/tlbflush.h | 5 +-
arch/x86/include/asm/tlbflush.h | 4 +-
arch/x86/mm/pgtable.c | 10 ++-
arch/xtensa/include/asm/tlbflush.h | 10 +--
arch/xtensa/kernel/smp.c | 2 +-
include/asm-generic/pgtable.h | 10 +--
include/asm-generic/tlb.h | 2 +-
mm/huge_memory.c | 19 +++++-
mm/hugetlb.c | 17 +++--
mm/mapping_dirty_helpers.c | 23 ++++---
mm/migrate.c | 8 ++-
mm/mprotect.c | 8 ++-
mm/mremap.c | 17 ++++-
mm/pgtable-generic.c | 51 ++++++++++++---
mm/rmap.c | 6 +-
67 files changed, 409 insertions(+), 174 deletions(-)

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2.19.1