| From: |
| guoren-AT-kernel.org |
| To: |
| paul.walmsley-AT-sifive.com, palmer-AT-dabbelt.com, guoren-AT-kernel.org, panqinglin2020-AT-iscas.ac.cn, bjorn-AT-rivosinc.com, conor.dooley-AT-microchip.com, leobras-AT-redhat.com, peterz-AT-infradead.org, keescook-AT-chromium.org, wuwei2016-AT-iscas.ac.cn, xiaoguang.xing-AT-sophgo.com, chao.wei-AT-sophgo.com, unicorn_wang-AT-outlook.com, uwu-AT-icenowy.me, jszhang-AT-kernel.org, wefu-AT-redhat.com, atishp-AT-atishpatra.org, ajones-AT-ventanamicro.com |
| Subject: |
| [PATCH V2 0/3] riscv: Add Zicbop & prefetchw support |
| Date: |
| Sun, 31 Dec 2023 03:29:50 -0500 |
| Message-ID: |
| <20231231082955.16516-1-guoren@kernel.org> |
| Cc: |
| linux-riscv-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, Guo Ren <guoren-AT-linux.alibaba.com> |
| Archive-link: |
| Article |
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/20230910082911.337878...
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(-)
--
2.40.1
