[v2,0/4] Improvements related to TLB and I$ flush

Message

Gary Guo March 8, 2019, 6:40 p.m. UTC

From: Gary Guo <[e-mail]>

Here's the revised version of my TLB/I$ flush improvement. Originally the
I$ part is a separate patch but I've decided to put into the same patch
series as they're somewhat related.

Instead of using Kconfig, the code now adds two kernel boot parameters
instead, tlbi_max_ops=<int> and tlbi_method=<ipi|sbi>.

Gary Guo (4):
  riscv: move flush_icache_{all,mm} to cacheflush.c
  riscv: move switch_mm to its own file
  riscv: fix sbi_remote_sfence_vma{,_asid}.
  riscv: rewrite tlb flush for performance

 arch/riscv/include/asm/cacheflush.h  |   2 +-
 arch/riscv/include/asm/mmu_context.h |  59 +-------
 arch/riscv/include/asm/pgtable.h     |   2 +-
 arch/riscv/include/asm/sbi.h         |  19 ++-
 arch/riscv/include/asm/tlbflush.h    |  73 ++++-----
 arch/riscv/kernel/smp.c              |  49 ------
 arch/riscv/mm/Makefile               |   2 +
 arch/riscv/mm/cacheflush.c           |  61 ++++++++
 arch/riscv/mm/context.c              |  77 ++++++++++
 arch/riscv/mm/tlbflush.c             | 216 +++++++++++++++++++++++++++
 10 files changed, 399 insertions(+), 161 deletions(-)
 create mode 100644 arch/riscv/mm/context.c
 create mode 100644 arch/riscv/mm/tlbflush.c