| Message ID | 20230111171027.2392-4-jszhang@kernel.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | riscv: improve boot time isa extensions handling | expand |
On Thu, Jan 12, 2023 at 01:10:17AM +0800, Jisheng Zhang wrote: > Currently riscv_cpufeature_patch_func() does nothing at the > RISCV_ALTERNATIVES_EARLY_BOOT stage. Add a check to detect whether we > are in this stage and exit early. This will allow us to use > riscv_cpufeature_patch_func() for scanning of all ISA extensions. > > Signed-off-by: Jisheng Zhang <jszhang@kernel.org> > Reviewed-by: Andrew Jones <ajones@ventanamicro.com> > Reviewed-by: Heiko Stuebner <heiko@sntech.de> Probably overkill at this stage, but: Reviewed-by: Conor Dooley <conor.dooley@microchip.com> BTW, would you mind CCing me on all patches in a series if I have previously reviewed the series? Makes life easier :) > --- > arch/riscv/kernel/cpufeature.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c > index 421b3d9578cc..37e8c5e69754 100644 > --- a/arch/riscv/kernel/cpufeature.c > +++ b/arch/riscv/kernel/cpufeature.c > @@ -328,6 +328,9 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin, > struct alt_entry *alt; > u32 tmp; > > + if (stage == RISCV_ALTERNATIVES_EARLY_BOOT) > + return; > + > for (alt = begin; alt < end; alt++) { > if (alt->vendor_id != 0) > continue; > -- > 2.38.1 > > > _______________________________________________ > linux-riscv mailing list > linux-riscv@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-riscv
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 421b3d9578cc..37e8c5e69754 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -328,6 +328,9 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin, struct alt_entry *alt; u32 tmp; + if (stage == RISCV_ALTERNATIVES_EARLY_BOOT) + return; + for (alt = begin; alt < end; alt++) { if (alt->vendor_id != 0) continue;