enable docker ppp

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2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/arch/arm/include/asm/highmem.h
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@@ -2,15 +2,14 @@
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 #ifndef _ASM_HIGHMEM_H
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 #define _ASM_HIGHMEM_H
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-#include <asm/kmap_types.h>
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+#include <asm/kmap_size.h>
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+#include <asm/fixmap.h>
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 #define PKMAP_BASE		(PAGE_OFFSET - PMD_SIZE)
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 #define LAST_PKMAP		PTRS_PER_PTE
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 #define LAST_PKMAP_MASK		(LAST_PKMAP - 1)
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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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-
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-#define kmap_prot		PAGE_KERNEL
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 #define flush_cache_kmaps() \
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 	do { \
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@@ -19,9 +18,6 @@
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 	} while (0)
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 extern pte_t *pkmap_page_table;
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-
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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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 /*
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  * The reason for kmap_high_get() is to ensure that the currently kmap'd
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@@ -51,23 +47,32 @@
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 #ifdef ARCH_NEEDS_KMAP_HIGH_GET
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 extern void *kmap_high_get(struct page *page);
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-#else
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+
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+static inline void *arch_kmap_local_high_get(struct page *page)
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+{
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+	if (IS_ENABLED(CONFIG_DEBUG_HIGHMEM) && !cache_is_vivt())
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+		return NULL;
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+	return kmap_high_get(page);
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+}
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+#define arch_kmap_local_high_get arch_kmap_local_high_get
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+
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+#else /* ARCH_NEEDS_KMAP_HIGH_GET */
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 static inline void *kmap_high_get(struct page *page)
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 {
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 	return NULL;
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 }
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-#endif
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+#endif /* !ARCH_NEEDS_KMAP_HIGH_GET */
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-/*
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- * The following functions are already defined by <linux/highmem.h>
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- * when CONFIG_HIGHMEM is not set.
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- */
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-#ifdef CONFIG_HIGHMEM
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-extern void *kmap(struct page *page);
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-extern void kunmap(struct page *page);
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-extern void *kmap_atomic(struct page *page);
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-extern void __kunmap_atomic(void *kvaddr);
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-extern void *kmap_atomic_pfn(unsigned long pfn);
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-#endif
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+#define arch_kmap_local_post_map(vaddr, pteval)				\
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+	local_flush_tlb_kernel_page(vaddr)
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+
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+#define arch_kmap_local_pre_unmap(vaddr)				\
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+do {									\
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+	if (cache_is_vivt())						\
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+		__cpuc_flush_dcache_area((void *)vaddr, PAGE_SIZE);	\
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+} while (0)
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+
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+#define arch_kmap_local_post_unmap(vaddr)				\
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+	local_flush_tlb_kernel_page(vaddr)
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 #endif