add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/arch/powerpc/include/asm/nohash/pgalloc.h
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..
@@ -3,6 +3,7 @@
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 #define _ASM_POWERPC_NOHASH_PGALLOC_H
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 #include <linux/mm.h>
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+#include <linux/slab.h>
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 extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
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 #ifdef CONFIG_PPC64
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@@ -16,9 +17,56 @@
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 }
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 #endif /* !CONFIG_PPC_BOOK3E */
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+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
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+{
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+	return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE),
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+			pgtable_gfp_flags(mm, GFP_KERNEL));
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+}
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+
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+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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+{
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+	kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd);
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+}
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+
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 #ifdef CONFIG_PPC64
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 #include <asm/nohash/64/pgalloc.h>
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 #else
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 #include <asm/nohash/32/pgalloc.h>
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 #endif
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+
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+static inline void pgtable_free(void *table, int shift)
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+{
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+	if (!shift) {
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+		pte_fragment_free((unsigned long *)table, 0);
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+	} else {
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+		BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
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+		kmem_cache_free(PGT_CACHE(shift), table);
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+	}
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+}
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+
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+#define get_hugepd_cache_index(x)	(x)
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+
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+static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift)
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+{
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+	unsigned long pgf = (unsigned long)table;
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+
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+	BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
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+	pgf |= shift;
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+	tlb_remove_table(tlb, (void *)pgf);
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+}
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+
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+static inline void __tlb_remove_table(void *_table)
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+{
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+	void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
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+	unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
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+
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+	pgtable_free(table, shift);
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+}
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+
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+static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
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+				  unsigned long address)
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+{
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+	tlb_flush_pgtable(tlb, address);
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+	pgtable_free_tlb(tlb, table, 0);
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+}
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 #endif /* _ASM_POWERPC_NOHASH_PGALLOC_H */