The function would fail when it detects the calling hart's vlen doesn't
match the first one's. The boot hart is the first hart calling this
function during riscv_fill_hwcap, so it is impossible to fail here. Add
a comment about this behavior.
Signed-off-by: Andy Chiu <andy.chiu@xxxxxxxxxx>
---
Changelog v2:
- update the comment (Conor)
---
arch/riscv/kernel/cpufeature.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index afeae3ff43dc..db9fb90cb272 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -658,6 +658,10 @@ void __init riscv_fill_hwcap(void)
}
if (elf_hwcap & COMPAT_HWCAP_ISA_V) {
+ /*
+ * This callsite can't fail here. It cannot fail when called on
+ * the boot hart.
+ */
riscv_v_setup_vsize();
/*
* ISA string in device tree might have 'v' flag, but
--
2.44.0.rc2
