riscv: vector: Check SR_SD before saving vstate #407
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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>
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Pull request for series with
subject: riscv: vector: Check SR_SD before saving vstate
version: 1
url: https://patchwork.kernel.org/project/linux-riscv/list/?series=812041