Messages in this thread | | | From | Paul Burton <> | Subject | Re: [PATCH 1/2] MIPS: Use Kconfig to select CPU_NO_EFFICIENT_FFS | Date | Tue, 13 Nov 2018 22:22:12 +0000 |
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Hello,
Paul Burton wrote: > Select CONFIG_CPU_NO_EFFICIENT_FFS via Kconfig when the kernel is > configured for a pre-MIPS32r1 CPU, rather than defining its equivalent > in asm/cpu-features.h based upon overrides of cpu_has_mips* macros. > > The latter only works if a platform has an cpu-feature-overrides.h > header which defines cpu_has_mips* macros, which are not generally > needed. There are many cases where we know that the target ISA for a > kernel build is MIPS32r1 or later & thus includes the CLZ instruction, > without requiring any overrides from the platform. Using Kconfig allows > us to take those into account, and more naturally make a decision about > instruction support using information about the target ISA. > > Signed-off-by: Paul Burton <paul.burton@mips.com> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com>
Series applied to mips-next.
Thanks, Paul
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