| Message ID | 20240318-zve-detection-v3-1-e12d42107fa8@sifive.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Support Zve32[xf] and Zve64[xfd] Vector subextensions | expand |
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
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@sifive.com> --- Changelog v2: - update the comment (Conor) --- arch/riscv/kernel/cpufeature.c | 4 ++++ 1 file changed, 4 insertions(+)