mbox series

[V2,0/3] riscv: Add Zicbop & prefetchw support

Message ID 20231231082955.16516-1-guoren@kernel.org (mailing list archive)
Headers show
Series riscv: Add Zicbop & prefetchw support | expand

Message

Guo Ren Dec. 31, 2023, 8:29 a.m. UTC 
From: Guo Ren <guoren@linux.alibaba.com>

This patch series adds Zicbop support and then enables the Linux
prefetchw feature. It's based on v6.7-rc7.

PATCH[1] - Add Zicbop support
PATCH[2] - Add prefetchw support
PATCH[3] - Enhance xchg_small

Changelog:
V2:
 - Separate from the qspinlock series
 - Optimize coding convention with last review advice
 - Add DEFINE_INSN_S type in insn-def.h
 - Add CBO_PREFETCH_I/R/W

V1:
https://lore.kernel.org/linux-riscv/20230910082911.3378782-4-guoren@kernel.org/

Guo Ren (3):
  riscv: Add Zicbop instruction definitions & cpufeature
  riscv: Add ARCH_HAS_PRETCHW support with Zibop
  riscv: xchg: Prefetch the destination word for sc.w

 arch/riscv/Kconfig                 | 15 ++++++++
 arch/riscv/include/asm/cmpxchg.h   |  4 +-
 arch/riscv/include/asm/hwcap.h     |  1 +
 arch/riscv/include/asm/insn-def.h  | 60 ++++++++++++++++++++++++++++++
 arch/riscv/include/asm/processor.h | 16 ++++++++
 arch/riscv/kernel/cpufeature.c     |  1 +
 6 files changed, 96 insertions(+), 1 deletion(-)