X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-x86_64%2Fmach-xen%2Fasm%2Fmmu.h;fp=include%2Fasm-x86_64%2Fmach-xen%2Fasm%2Fmmu.h;h=2ac82529546021030476180b0a49c1fd8a135fb3;hb=1db395853d4f30d6120458bd279ede1f882a8525;hp=0000000000000000000000000000000000000000;hpb=34a75f0025b9cf803b6a88db032e6ad6950c9313;p=linux-2.6.git

diff --git a/include/asm-x86_64/mach-xen/asm/mmu.h b/include/asm-x86_64/mach-xen/asm/mmu.h
new file mode 100644
index 000000000..2ac825295
--- /dev/null
+++ b/include/asm-x86_64/mach-xen/asm/mmu.h
@@ -0,0 +1,38 @@
+#ifndef __x86_64_MMU_H
+#define __x86_64_MMU_H
+
+#include <linux/spinlock.h>
+#include <asm/semaphore.h>
+
+/*
+ * The x86_64 doesn't have a mmu context, but
+ * we put the segment information here.
+ *
+ * cpu_vm_mask is used to optimize ldt flushing.
+ */
+typedef struct { 
+	void *ldt;
+	rwlock_t ldtlock; 
+	int size;
+	struct semaphore sem; 
+#ifdef CONFIG_XEN
+	unsigned pinned:1;
+	unsigned has_foreign_mappings:1;
+	struct list_head unpinned;
+#endif
+} mm_context_t;
+
+#ifdef CONFIG_XEN
+extern struct list_head mm_unpinned;
+extern spinlock_t mm_unpinned_lock;
+
+/* mm/memory.c:exit_mmap hook */
+extern void _arch_exit_mmap(struct mm_struct *mm);
+#define arch_exit_mmap(_mm) _arch_exit_mmap(_mm)
+
+/* kernel/fork.c:dup_mmap hook */
+extern void _arch_dup_mmap(struct mm_struct *mm);
+#define arch_dup_mmap(mm, oldmm) ((void)(oldmm), _arch_dup_mmap(mm))
+#endif
+
+#endif