patch-2.3.23 linux/include/asm-i386/bigmem.h

• Lines: 70
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.22/linux/include/asm-i386/bigmem.h
• Orig date: Tue Aug 31 17:29:14 1999

diff -u --recursive --new-file v2.3.22/linux/include/asm-i386/bigmem.h linux/include/asm-i386/bigmem.h
@@ -1,69 +0,0 @@
-/*
- * bigmem.h:	virtual kernel memory mappings for big memory
- *
- * Used in CONFIG_BIGMEM systems for memory pages which	are not
- * addressable by direct kernel virtual adresses.
- *
- * Copyright (C) 1999 Gerhard Wichert, Siemens AG
- *		      Gerhard.Wichert@pdb.siemens.de
- */
-
-#ifndef _ASM_BIGMEM_H
-#define _ASM_BIGMEM_H
-
-#include <linux/init.h>
-
-#define BIGMEM_DEBUG /* undef for production */
-
-/* declarations for bigmem.c */
-extern unsigned long bigmem_start, bigmem_end;
-extern int nr_free_bigpages;
-
-extern pte_t *kmap_pte;
-extern pgprot_t kmap_prot;
-
-extern void kmap_init(void) __init;
-
-/* kmap helper functions necessary to access the bigmem pages in kernel */
-#include <asm/pgtable.h>
-#include <asm/kmap_types.h>
-
-extern inline unsigned long kmap(unsigned long kaddr, enum km_type type)
-{
-	if (__pa(kaddr) < bigmem_start)
-		return kaddr;
-	{
-		enum fixed_addresses idx = type+KM_TYPE_NR*smp_processor_id();
-		unsigned long vaddr = __fix_to_virt(FIX_KMAP_BEGIN+idx);
-
-#ifdef BIGMEM_DEBUG
-		if (!pte_none(*(kmap_pte-idx)))
-		{
-			__label__ here;
-		here:
-			printk(KERN_ERR "not null pte on CPU %d from %p\n",
-			       smp_processor_id(), &&here);
-		}
-#endif
-		set_pte(kmap_pte-idx, mk_pte(kaddr & PAGE_MASK, kmap_prot));
-		__flush_tlb_one(vaddr);
-
-		return vaddr | (kaddr & ~PAGE_MASK);
-	}
-}
-
-extern inline void kunmap(unsigned long vaddr, enum km_type type)
-{
-#ifdef BIGMEM_DEBUG
-	enum fixed_addresses idx = type+KM_TYPE_NR*smp_processor_id();
-	if ((vaddr & PAGE_MASK) == __fix_to_virt(FIX_KMAP_BEGIN+idx))
-	{
-		/* force other mappings to Oops if they'll try to access
-		   this pte without first remap it */
-		pte_clear(kmap_pte-idx);
-		__flush_tlb_one(vaddr);
-	}
-#endif
-}
-
-#endif /* _ASM_BIGMEM_H */