Re: [PATCH v2 0/3] CPUCFG emulation future-proofing & HWCAP addition

[Thomas Bogendoerfer <tsbogend@alpha.franken.de>]

On Sat, May 30, 2020 at 03:32:40PM +0800, WANG Xuerui wrote:
> This patch series future-proofs the CPUCFG emulation, in light of
> possibility of new Loongson cores still lacking native CPUCFG.
> Also an HWCAP flag bit is allocated and exposed for userspace's probing
> convenience, per the earlier plan shared on the mailing list.
> 
> Tested on Loongson-3A3000 and Loongson-3A4000. Compile-tested with
> 64r2_defconfig.
> 
> v2:
> - unconditionally bump PERF_COUNT_SW_EMULATION_FAULTS even on
>   unsupported core models
> - reordered model match arms per Huacai's review
> - tweaked commit message of 2nd patch
> 
> WANG Xuerui (3):
>   MIPS: Loongson64: Guard against future cores without CPUCFG
>   MIPS: Expose Loongson CPUCFG availability via HWCAP
>   MIPS: Loongson64: Reorder CPUCFG model match arms
> 
>  .../include/asm/mach-loongson64/cpucfg-emul.h | 11 +++
>  arch/mips/include/uapi/asm/hwcap.h            |  1 +
>  arch/mips/kernel/traps.c                      |  4 ++
>  arch/mips/loongson64/cpucfg-emul.c            | 70 +++++++++++--------
>  4 files changed, 56 insertions(+), 30 deletions(-)

series 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 ]