[PATCH 4/7] include: sbi: set FS dirty in vsstatus when V=1

[Bo Gan]

According to Privileged ISA 19.2.11:

Modifying the floating-point state when V=1 causes both fields
(vsstatus.FS and the HS-level sstatus.FS) to be set to 3 (Dirty)

Fixes: 130e65dd9d44 ("lib: sbi: Implement SET_FS_DIRTY() to make sure the mstatus FS dirty is set")
Signed-off-by: Bo Gan <ganboing at gmail.com>
---
 include/sbi/riscv_fp.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/sbi/riscv_fp.h b/include/sbi/riscv_fp.h
index 03011af9..ff1dbc87 100644
--- a/include/sbi/riscv_fp.h
+++ b/include/sbi/riscv_fp.h
@@ -83,7 +83,11 @@
 #define GET_FFLAGS() csr_read(CSR_FFLAGS)
 #define SET_FFLAGS(value) csr_write(CSR_FFLAGS, (value))
 
-#define SET_FS_DIRTY(regs) (regs->mstatus |= MSTATUS_FS)
+#define SET_FS_DIRTY(regs) do {				\
+	if (sbi_regs_from_virt(regs))			\
+		csr_set(CSR_VSSTATUS, MSTATUS_FS);	\
+	regs->mstatus |= MSTATUS_FS;			\
+} while(0)
 
 #define GET_F32_RS1(insn, regs) (GET_F32_REG(insn, 15, regs))
 #define GET_F32_RS2(insn, regs) (GET_F32_REG(insn, 20, regs))
-- 
2.34.1