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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/arch/powerpc/include/asm/highmem.h
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@@ -24,13 +24,10 @@
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 #ifdef __KERNEL__
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 #include <linux/interrupt.h>
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-#include <asm/kmap_types.h>
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 #include <asm/cacheflush.h>
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 #include <asm/page.h>
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 #include <asm/fixmap.h>
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-extern pte_t *kmap_pte;
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-extern pgprot_t kmap_prot;
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 extern pte_t *pkmap_page_table;
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 /*
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@@ -59,35 +56,13 @@
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 #define PKMAP_NR(virt)  ((virt-PKMAP_BASE) >> PAGE_SHIFT)
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 #define PKMAP_ADDR(nr)  (PKMAP_BASE + ((nr) << PAGE_SHIFT))
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-extern void *kmap_high(struct page *page);
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-extern void kunmap_high(struct page *page);
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-extern void *kmap_atomic_prot(struct page *page, pgprot_t prot);
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-extern void __kunmap_atomic(void *kvaddr);
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-
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-static inline void *kmap(struct page *page)
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-{
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-	might_sleep();
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-	if (!PageHighMem(page))
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-		return page_address(page);
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-	return kmap_high(page);
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-}
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-
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-static inline void kunmap(struct page *page)
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-{
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-	BUG_ON(in_interrupt());
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-	if (!PageHighMem(page))
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-		return;
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-	kunmap_high(page);
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-}
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-
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-static inline void *kmap_atomic(struct page *page)
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-{
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-	return kmap_atomic_prot(page, kmap_prot);
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-}
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-
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-
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 #define flush_cache_kmaps()	flush_cache_all()
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+#define arch_kmap_local_post_map(vaddr, pteval)	\
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+	local_flush_tlb_page(NULL, vaddr)
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+#define arch_kmap_local_post_unmap(vaddr)	\
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+	local_flush_tlb_page(NULL, vaddr)
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+
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 #endif /* __KERNEL__ */
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 #endif /* _ASM_HIGHMEM_H */