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

guoren
2023-12-31T08:30:33Z

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(-)

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2.40.1