s390: add 3f program exception handler

[linux-2.6-microblaze.git] / arch / s390 / mm / fault.c

diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 4c8c063..996884d 100644 (file)
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -859,6 +859,21 @@ void do_non_secure_storage_access(struct pt_regs *regs)
 }
 NOKPROBE_SYMBOL(do_non_secure_storage_access);
 
+void do_secure_storage_violation(struct pt_regs *regs)
+{
+       /*
+        * Either KVM messed up the secure guest mapping or the same
+        * page is mapped into multiple secure guests.
+        *
+        * This exception is only triggered when a guest 2 is running
+        * and can therefore never occur in kernel context.
+        */
+       printk_ratelimited(KERN_WARNING
+                          "Secure storage violation in task: %s, pid %d\n",
+                          current->comm, current->pid);
+       send_sig(SIGSEGV, current, 0);
+}
+
 #else
 void do_secure_storage_access(struct pt_regs *regs)
 {
@@ -869,4 +884,9 @@ void do_non_secure_storage_access(struct pt_regs *regs)
 {
        default_trap_handler(regs);
 }
+
+void do_secure_storage_violation(struct pt_regs *regs)
+{
+       default_trap_handler(regs);
+}
 #endif