[PATCH v2 4/8] include: sbi: set FS dirty in vsstatus when V=1
Bo Gan <[email protected]>
| Newsgroups | org.infradead.lists.opensbi |
|---|---|
| Message-ID | <[email protected]> |
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 <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
---
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
--
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