riscv: vector: Use vlenb from DT for thead

If thead,vlenb is provided in the device tree, prefer that over reading the vlenb csr. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Tested-by: Yangyu Chen <cyy@cyyself.name> Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-5-236c22791ef9@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2026-10-20 19:23:40 +00:00 · 2024-11-13 18:21:11 -08:00 · 2024-11-13 18:21:11 -08:00 · 377be47f90
commit 377be47f90
parent cddd63869f
6 changed files with 91 additions and 1 deletions
--- a/arch/riscv/Kconfig.vendor
+++ b/arch/riscv/Kconfig.vendor
--- a/arch/riscv/include/asm/cpufeature.h
+++ b/arch/riscv/include/asm/cpufeature.h
--- a/arch/riscv/include/asm/vendor_extensions/thead.h
+++ b/arch/riscv/include/asm/vendor_extensions/thead.h
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
--- a/arch/riscv/kernel/vector.c
+++ b/arch/riscv/kernel/vector.c
--- a/arch/riscv/kernel/vendor_extensions/thead.c
+++ b/arch/riscv/kernel/vendor_extensions/thead.c