Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-s390/mmu_context.h b/include/asm-s390/mmu_context.h
new file mode 100644
index 0000000..3a3bb3f
--- /dev/null
+++ b/include/asm-s390/mmu_context.h
@@ -0,0 +1,54 @@
+/*
+ * include/asm-s390/mmu_context.h
+ *
+ * S390 version
+ *
+ * Derived from "include/asm-i386/mmu_context.h"
+ */
+
+#ifndef __S390_MMU_CONTEXT_H
+#define __S390_MMU_CONTEXT_H
+
+/*
+ * get a new mmu context.. S390 don't know about contexts.
+ */
+#define init_new_context(tsk,mm) 0
+
+#define destroy_context(mm) do { } while (0)
+
+static inline void enter_lazy_tlb(struct mm_struct *mm,
+ struct task_struct *tsk)
+{
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ struct task_struct *tsk)
+{
+ if (prev != next) {
+#ifndef __s390x__
+ S390_lowcore.user_asce = (__pa(next->pgd)&PAGE_MASK) |
+ (_SEGMENT_TABLE|USER_STD_MASK);
+ /* Load home space page table origin. */
+ asm volatile("lctl 13,13,%0"
+ : : "m" (S390_lowcore.user_asce) );
+#else /* __s390x__ */
+ S390_lowcore.user_asce = (__pa(next->pgd) & PAGE_MASK) |
+ (_REGION_TABLE|USER_STD_MASK);
+ /* Load home space page table origin. */
+ asm volatile("lctlg 13,13,%0"
+ : : "m" (S390_lowcore.user_asce) );
+#endif /* __s390x__ */
+ }
+ cpu_set(smp_processor_id(), next->cpu_vm_mask);
+}
+
+#define deactivate_mm(tsk,mm) do { } while (0)
+
+extern inline void activate_mm(struct mm_struct *prev,
+ struct mm_struct *next)
+{
+ switch_mm(prev, next, current);
+ set_fs(current->thread.mm_segment);
+}
+
+#endif