On Wed, Jun 07, 2023 at 01:51:22PM +0800, Jiaxun Yang wrote: > Some CPU feature macros were using current_cpu_type to mark feature > availability. > > However current_cpu_type will use smp_processor_id, which is prohibited > under preemptable context. > > Since those features are all uniform on all CPUs in a SMP system, use > boot_cpu_type instead of current_cpu_type to fix preemptable kernel. > > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> > --- > arch/mips/include/asm/cpu-features.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h > index 2a0b90077b50..8c6d4a87db37 100644 > --- a/arch/mips/include/asm/cpu-features.h > +++ b/arch/mips/include/asm/cpu-features.h > @@ -125,7 +125,7 @@ > ({ \ > int __res; \ > \ > - switch (current_cpu_type()) { \ > + switch (boot_cpu_type()) { \ > case CPU_CAVIUM_OCTEON: \ > case CPU_CAVIUM_OCTEON_PLUS: \ > case CPU_CAVIUM_OCTEON2: \ > @@ -373,7 +373,7 @@ > ({ \ > int __res; \ > \ > - switch (current_cpu_type()) { \ > + switch (boot_cpu_type()) { \ > case CPU_M14KC: \ > case CPU_74K: \ > case CPU_1074K: \ > -- > 2.39.2 (Apple Git-143) applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]