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riscv: vector: Check SR_SD before saving vstate #407

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riscv: vector: Check SR_SD before saving vstate #407

wants to merge 1 commit into from

Commits on Jan 5, 2024

  1. riscv: vector: Check SR_SD before saving vstate 

    The SD bit summarizes the dirty states of FS, VS, or XS fields,
providing a "fast check" before saving fstate or vstate.

Let __switch_to_vector() check SD bit as __switch_to_fpu() does.

Fixes: 3a2df63 ("riscv: Add task switch support for vector")
Signed-off-by: Song Shuai <songshuaishuai@tinylab.org>
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
    Song Shuai authored and Björn Töpel committed Jan 5, 2024
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