diff mbox series

lib: sbi: Fix FP state enable in sbi_fp_save

Message ID 20260828213104.84490-1-theodoruswensanfebruanto025@gmail.com
State New
Headers show
Series lib: sbi: Fix FP state enable in sbi_fp_save | expand

Commit Message

whensun Aug. 28, 2026, 9:31 p.m. UTC 
sbi_fp_save() currently sets mstatus.VS before executing floating-point
store instructions. VS controls vector state and does not enable
floating-point instructions.

Set mstatus.FS instead, matching sbi_fp_restore(), so floating-point
state can be saved when FS was previously Off.

Fixes: 718e1d194f5a ("lib: sbi: Add floating-point context save/restore support.")

Signed-off-by: whensun <theodoruswensanfebruanto025@gmail.com>
---
 lib/sbi/sbi_fp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/lib/sbi/sbi_fp.c b/lib/sbi/sbi_fp.c
index c8941252..38fb7a01 100644
--- a/lib/sbi/sbi_fp.c
+++ b/lib/sbi/sbi_fp.c
@@ -20,7 +20,7 @@  void sbi_fp_save(struct sbi_fp_context *dst)
 	if (!dst)
 		return;
 
-	mstatus_orig = csr_read_set(CSR_MSTATUS, MSTATUS_VS);
+	mstatus_orig = csr_read_set(CSR_MSTATUS, MSTATUS_FS);
 
 	asm volatile(
 #if defined(__riscv_d)