[linuxsh-dev] Ptrace works

[NIIBE Y. <gn...@ch...>]

This is the patch.  It works for me.

2000-08-20  NIIBE Yutaka  <gn...@m1...>

	* arch/sh/mm/fault.c (update_mmu_cache): Bug fix.  This routine
	is called by ptrace when PTE does not have information.

Index: arch/sh/mm/fault.c
===================================================================
RCS file: /cvsroot/linuxsh/kernel/arch/sh/mm/fault.c,v
retrieving revision 1.18
diff -u -p -r1.18 fault.c
--- arch/sh/mm/fault.c	2000/08/12 07:17:48	1.18
+++ arch/sh/mm/fault.c	2000/08/20 01:07:12
@@ -313,6 +313,12 @@ void update_mmu_cache(struct vm_area_str
 	}
 #endif
 
+	/* Ptrace may call this routine. */
+	if (vma && current->active_mm != vma->vm_mm) {
+		restore_flags(flags);
+		return;
+	}
+
 	/* Set PTEH register */
 	pteaddr = (address & MMU_VPN_MASK) | get_asid();
 	ctrl_outl(pteaddr, MMU_PTEH);