[PATCH] s390: kexec fixes and improvements.

Disable pseudo page fault handling before starting the new kernel and try
to use diag308 to reset the machine.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index 2721c3a32b84..5aa71b05b8ae 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -70,6 +70,8 @@ machine_kexec(struct kimage *image)
         for (;;);
 }
 
+extern void pfault_fini(void);
+
 static void
 kexec_halt_all_cpus(void *kernel_image)
 {
@@ -78,6 +80,11 @@ kexec_halt_all_cpus(void *kernel_image)
         struct kimage *image;
         relocate_kernel_t data_mover;
 
+#ifdef CONFIG_PFAULT
+        if (MACHINE_IS_VM)
+                pfault_fini();
+#endif
+
         if (atomic_compare_and_swap(-1, smp_processor_id(), &cpuid))
                 signal_processor(smp_processor_id(), sigp_stop);