1 files changed, 0 insertions, 136 deletions
diff --git a/linux-2.6-xen-sparse/arch/i386/mm/highmem-xen.c b/linux-2.6-xen-sparse/arch/i386/mm/highmem-xen.c
deleted file mode 100644
index 20838cce53..0000000000
--- a/linux-2.6-xen-sparse/arch/i386/mm/highmem-xen.c
+++ /dev/null
@@ -1,136 +0,0 @@
-#include <linux/highmem.h>
-#include <linux/module.h>
-
-void *kmap(struct page *page)
-{
-	might_sleep();
-	if (!PageHighMem(page))
-		return page_address(page);
-	return kmap_high(page);
-}
-
-void kunmap(struct page *page)
-{
-	if (in_interrupt())
-		BUG();
-	if (!PageHighMem(page))
-		return;
-	kunmap_high(page);
-}
-
-/*
- * kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because
- * no global lock is needed and because the kmap code must perform a global TLB
- * invalidation when the kmap pool wraps.
- *
- * However when holding an atomic kmap is is not legal to sleep, so atomic
- * kmaps are appropriate for short, tight code paths only.
- */
-static void *__kmap_atomic(struct page *page, enum km_type type, pgprot_t prot)
-{
-	enum fixed_addresses idx;
-	unsigned long vaddr;
-
-	/* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
-	inc_preempt_count();
-	if (!PageHighMem(page))
-		return page_address(page);
-
-	idx = type + KM_TYPE_NR*smp_processor_id();
-	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-#ifdef CONFIG_DEBUG_HIGHMEM
-	if (!pte_none(*(kmap_pte-idx)))
-		BUG();
-#endif
-	set_pte_at_sync(&init_mm, vaddr, kmap_pte-idx, mk_pte(page, prot));
-
-	return (void*) vaddr;
-}
-
-void *kmap_atomic(struct page *page, enum km_type type)
-{
-	return __kmap_atomic(page, type, kmap_prot);
-}
-
-/* Same as kmap_atomic but with PAGE_KERNEL_RO page protection. */
-void *kmap_atomic_pte(struct page *page, enum km_type type)
-{
-	return __kmap_atomic(page, type,
-	                     test_bit(PG_pinned, &page->flags)
-	                     ? PAGE_KERNEL_RO : kmap_prot);
-}
-
-void kunmap_atomic(void *kvaddr, enum km_type type)
-{
-#if defined(CONFIG_DEBUG_HIGHMEM) || defined(CONFIG_XEN)
-	unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
-	enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
-
-	if (vaddr < FIXADDR_START) { // FIXME
-		dec_preempt_count();
-		preempt_check_resched();
-		return;
-	}
-#endif
-
-#if defined(CONFIG_DEBUG_HIGHMEM)
-	if (vaddr != __fix_to_virt(FIX_KMAP_BEGIN+idx))
-		BUG();
-
-	/*
-	 * force other mappings to Oops if they'll try to access
-	 * this pte without first remap it
-	 */
-	pte_clear(&init_mm, vaddr, kmap_pte-idx);
-	__flush_tlb_one(vaddr);
-#elif defined(CONFIG_XEN)
-	/*
-	 * We must ensure there are no dangling pagetable references when
-	 * returning memory to Xen (decrease_reservation).
-	 * XXX TODO: We could make this faster by only zapping when
-	 * kmap_flush_unused is called but that is trickier and more invasive.
-	 */
-	pte_clear(&init_mm, vaddr, kmap_pte-idx);
-#endif
-
-	dec_preempt_count();
-	preempt_check_resched();
-}
-
-/* This is the same as kmap_atomic() but can map memory that doesn't
- * have a struct page associated with it.
- */
-void *kmap_atomic_pfn(unsigned long pfn, enum km_type type)
-{
-	enum fixed_addresses idx;
-	unsigned long vaddr;
-
-	inc_preempt_count();
-
-	idx = type + KM_TYPE_NR*smp_processor_id();
-	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-	set_pte(kmap_pte-idx, pfn_pte(pfn, kmap_prot));
-	__flush_tlb_one(vaddr);
-
-	return (void*) vaddr;
-}
-
-struct page *kmap_atomic_to_page(void *ptr)
-{
-	unsigned long idx, vaddr = (unsigned long)ptr;
-	pte_t *pte;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	idx = virt_to_fix(vaddr);
-	pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
-	return pte_page(*pte);
-}
-
-EXPORT_SYMBOL(kmap);
-EXPORT_SYMBOL(kunmap);
-EXPORT_SYMBOL(kmap_atomic);
-EXPORT_SYMBOL(kmap_atomic_pte);
-EXPORT_SYMBOL(kunmap_atomic);
-EXPORT_SYMBOL(kmap_atomic_to_page);