This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-x86_64 / mach-xen / asm / mmu.h

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 (file)
index 0000000..2ac8252
--- /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