mirror of https://github.com/hak5/openwrt.git
22 lines
807 B
Diff
22 lines
807 B
Diff
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[MIPS] Fix computation of {PGD,PMD,PTE}_T_LOG2.
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For the generation of asm-offset.h to work these need to be evaulatable
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by gcc as a constant expression. This issue did exist for a while but
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didn't bite because they're only in asm-offset.h for debugging purposes.
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--- a/include/asm-mips/pgtable.h
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+++ b/include/asm-mips/pgtable.h
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@@ -168,9 +168,9 @@ static inline void pte_clear(struct mm_s
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#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
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#endif
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-#define PGD_T_LOG2 ffz(~sizeof(pgd_t))
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-#define PMD_T_LOG2 ffz(~sizeof(pmd_t))
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-#define PTE_T_LOG2 ffz(~sizeof(pte_t))
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+#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1)
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+#define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1)
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+#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1)
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extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
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