riscv: vector: Support xtheadvector save/restore

Use alternatives to add support for xtheadvector vector save/restore routines. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Tested-by: Yangyu Chen <cyy@cyyself.name> Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-9-236c22791ef9@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2026-10-22 19:14:51 +00:00 · 2024-11-13 18:21:15 -08:00 · 2024-11-13 18:21:15 -08:00 · d863910eab
commit d863910eab
parent 01e3313e34
8 changed files with 198 additions and 68 deletions
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
--- a/arch/riscv/include/asm/switch_to.h
+++ b/arch/riscv/include/asm/switch_to.h
--- a/arch/riscv/include/asm/vector.h
+++ b/arch/riscv/include/asm/vector.h
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
--- a/arch/riscv/kernel/kernel_mode_vector.c
+++ b/arch/riscv/kernel/kernel_mode_vector.c
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
--- a/arch/riscv/kernel/signal.c
+++ b/arch/riscv/kernel/signal.c
--- a/arch/riscv/kernel/vector.c
+++ b/arch/riscv/kernel/vector.c