[PATCH v4 0/3] [PATCH v4 0/3] Add RISC-V V extension detection and LPM optimization

[uk7b at foxmail.com]

From: Sun Yuechi <sunyuechi at iscas.ac.cn>

This patch series adds support for the RISC-V Vector (V) extension and 
provides an optimized implementation of `rte_lpm_lookupx4` using RVV.

- Test: app/test/lpm_perf_autotest
- Platform: Banana Pi BPI-F3
- SoC: Spacemit X60 (8 cores with Vector extension)
- CPU Frequency: up to 1.6 GHz
- Cache: 256 KiB L1d ×8, 256 KiB L1i ×8, 1 MiB L2 ×2
- Memory: 16 GiB
- Kernel: Linux 6.6.36
- Compiler: GCC 14.2.0 (with RVV intrinsic support)

Test results(LPM LookupX4):
    scalar: 5.7 cycles
    rvv:    4.6 cycles

v4:
- Keep the LPM code consistent, use a static inline function instead of runtime detection.
- Update the commit message.
- Update the .mailmap file.
v3:
- Due to previous SMTP server restrictions, patches could not be sent as a proper series.
This version re-sends the same patches as a series. No code changes.
v2:
- Improved commit messages.

Sun Yuechi (3):
  config/riscv: detect V extension
  lib/lpm: R-V V rte_lpm_lookupx4
  riscv: override machine_args only when default

 .mailmap                 |  1 +
 MAINTAINERS              |  2 ++
 config/riscv/meson.build | 27 +++++++++++++++++
 lib/lpm/meson.build      |  1 +
 lib/lpm/rte_lpm.h        |  2 ++
 lib/lpm/rte_lpm_rvv.h    | 62 ++++++++++++++++++++++++++++++++++++++++
 6 files changed, 95 insertions(+)
 create mode 100644 lib/lpm/rte_lpm_rvv.h

-- 
2.49.0