forked from Minki/linux
powerpc/mm: Add early_[cpu|mmu]_has_feature()
In later patches, we will be switching CPU and MMU feature checks to use static keys. For checks in early boot before jump label is initialized we need a variant of [cpu|mmu]_has_feature() that doesn't use jump labels. So create those called, unimaginatively, early_[cpu|mmu]_has_feature(). Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -577,12 +577,17 @@ enum {
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};
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#endif /* __powerpc64__ */
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static inline bool cpu_has_feature(unsigned long feature)
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static inline bool early_cpu_has_feature(unsigned long feature)
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{
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return !!((CPU_FTRS_ALWAYS & feature) ||
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(CPU_FTRS_POSSIBLE & cur_cpu_spec->cpu_features & feature));
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}
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static inline bool cpu_has_feature(unsigned long feature)
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{
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return early_cpu_has_feature(feature);
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}
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#define HBP_NUM 1
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#endif /* !__ASSEMBLY__ */
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@ -135,11 +135,16 @@ enum {
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0,
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};
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static inline bool mmu_has_feature(unsigned long feature)
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static inline bool early_mmu_has_feature(unsigned long feature)
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{
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return !!(MMU_FTRS_POSSIBLE & cur_cpu_spec->mmu_features & feature);
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}
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static inline bool mmu_has_feature(unsigned long feature)
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{
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return early_mmu_has_feature(feature);
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}
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static inline void mmu_clear_feature(unsigned long feature)
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{
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cur_cpu_spec->mmu_features &= ~feature;
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@ -168,11 +173,21 @@ static inline bool radix_enabled(void)
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{
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return mmu_has_feature(MMU_FTR_TYPE_RADIX);
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}
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static inline bool early_radix_enabled(void)
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{
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return early_mmu_has_feature(MMU_FTR_TYPE_RADIX);
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}
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#else
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static inline bool radix_enabled(void)
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{
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return false;
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}
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static inline bool early_radix_enabled(void)
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{
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return false;
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}
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#endif
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#endif /* !__ASSEMBLY__ */
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