From 127581b64b432804948535d49847b36366b9ff64 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 22 Nov 2013 15:14:23 +0100 Subject: [PATCH] s390/mm: handle asce-type exceptions as normal page fault Git commit 9e34f2686bb088b211b6cac8772e1f644c6180f8 "s390/mm,tlb: tlb flush on page table upgrade fixup" removed the exception handler for the asce-type exception. This is incorrect as the user-copy with MVCOS can cause asce-type exceptions in the kernel if a user pointer is too large. Those need to be handled with do_no_context to branch to the fixup in the user-copy code. The simplest fix for this problem is to call do_dat_exception for asce-type excpetions, as there is no vma for the address the code will handle the exception correctly. Signed-off-by: Martin Schwidefsky --- Reading git-format-patch failed