patch-2.1.19 linux/include/asm-sparc64/mmu_context.h

• Lines: 37
• Date: Mon Dec 30 12:00:03 1996
• Orig file: v2.1.18/linux/include/asm-sparc64/mmu_context.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.18/linux/include/asm-sparc64/mmu_context.h linux/include/asm-sparc64/mmu_context.h
@@ -0,0 +1,36 @@
+/* $Id: mmu_context.h,v 1.4 1996/12/28 18:39:51 davem Exp $ */
+#ifndef __SPARC64_MMU_CONTEXT_H
+#define __SPARC64_MMU_CONTEXT_H
+
+#include <asm/system.h>
+#include <asm/spitfire.h>
+
+#define NO_CONTEXT     -1
+
+#ifndef __ASSEMBLY__
+
+/* Initialize the context related info for a new mm_struct
+ * instance.
+ */
+#define init_new_context(mm) ((mm)->context = NO_CONTEXT)
+
+extern void spitfire_get_new_context(struct mm_struct *mm);
+
+extern __inline__ void get_mmu_context(struct task_struct *tsk)
+{
+	struct mm_struct *mm = tsk->mm;
+
+	if(tsk->mm->context == NO_CONTEXT)
+		spitfire_get_new_context(mm);
+
+	/* Get current set of user windows out of the cpu. */
+	flushw_user();
+
+	/* Jump into new ASN. */
+	spitfire_set_primary_context(mm->context);
+	spitfire_set_secondary_context(mm->context);
+}
+
+#endif /* !(__ASSEMBLY__) */
+
+#endif /* !(__SPARC64_MMU_CONTEXT_H) */