riscv: cpufeature: Fix thead vector hwcap removal

Browse source

The riscv_cpuinfo struct that contains mvendorid and marchid is not
populated until all harts are booted which happens after the DT parsing.
Use the mvendorid/marchid from the boot hart to determine if the DT
contains an invalid V.

Fixes: d82f32202e ("RISC-V: Ignore V from the riscv,isa DT property on older T-Head CPUs")
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20240502-cpufeature_fixes-v4-1-b3d1a088722d@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

...

This commit is contained in:

Charlie Jenkins 2024-05-02 21:50:50 -07:00 • committed by Palmer Dabbelt

parent 4cece76496

commit e482eab4d1

No known key found for this signature in database

GPG key ID: 2E1319F35FBB1889

3 changed files with 44 additions and 6 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

arch/riscv/include/asm/sbi.h

View file

40

arch/riscv/kernel/cpu.c

View file

8

arch/riscv/kernel/cpufeature.c

View file