Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Martin Schwidefsky:
 "Three kvm related memory management fixes, a fix for show_trace, a fix
  for early console output and a patch from Ben to help prevent compile
  errors in regard to irq functions (or our lack thereof)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/pci: Implement IRQ functions if !PCI
  s390/sclp: fix new line detection
  s390/pgtable: make pgste lock an explicit barrier
  s390/pgtable: Save pgste during modify_prot_start/commit
  s390/dumpstack: fix address ranges for asynchronous and panic stack
  s390/pgtable: Fix guest overindication for change bit

1 files changed, 8 insertions, 4 deletions

diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c
index 298297477257..87acc38f73c6 100644
--- a/arch/s390/kernel/dumpstack.c
+++ b/arch/s390/kernel/dumpstack.c
@@ -74,6 +74,8 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
 
 static void show_trace(struct task_struct *task, unsigned long *stack)
 {
+        const unsigned long frame_size =
+                STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);
         register unsigned long __r15 asm ("15");
         unsigned long sp;
 
@@ -82,11 +84,13 @@ static void show_trace(struct task_struct *task, unsigned long *stack)
                 sp = task ? task->thread.ksp : __r15;
         printk("Call Trace:\n");
 #ifdef CONFIG_CHECK_STACK
-        sp = __show_trace(sp, S390_lowcore.panic_stack - 4096,
-                          S390_lowcore.panic_stack);
+        sp = __show_trace(sp,
+                          S390_lowcore.panic_stack + frame_size - 4096,
+                          S390_lowcore.panic_stack + frame_size);
 #endif
-        sp = __show_trace(sp, S390_lowcore.async_stack - ASYNC_SIZE,
-                          S390_lowcore.async_stack);
+        sp = __show_trace(sp,
+                          S390_lowcore.async_stack + frame_size - ASYNC_SIZE,
+                          S390_lowcore.async_stack + frame_size);
         if (task)
                 __show_trace(sp, (unsigned long) task_stack_page(task),
                              (unsigned long) task_stack_page(task) + THREAD_SIZE);