src/patches/suse-2.6.27.25/patches.xen/xen3-patch-2.6.27.4-5

   1 From: Greg Kroah-Hartman <gregkh@suse.de>
   2 Subject: Linux 2.6.27.5
   3
   4 Upstream 2.6.27.5 release from kernel.org
   5
   6 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
   7
   8 Automatically created from "patches.kernel.org/patch-2.6.27.4-5" by xen-port-patches.py
   9
  10 Index: head-2008-11-25/arch/x86/kernel/process_64-xen.c
  11 ===================================================================
  12 --- head-2008-11-25.orig/arch/x86/kernel/process_64-xen.c       2008-11-25 13:34:32.000000000 +0100
  13 +++ head-2008-11-25/arch/x86/kernel/process_64-xen.c    2008-11-10 12:12:28.000000000 +0100
  14 @@ -786,12 +786,12 @@ unsigned long get_wchan(struct task_stru
  15         if (!p || p == current || p->state==TASK_RUNNING)
  16                 return 0;
  17         stack = (unsigned long)task_stack_page(p);
  18 -       if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE)
  19 +       if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE)
  20                 return 0;
  21         fp = *(u64 *)(p->thread.sp);
  22         do {
  23                 if (fp < (unsigned long)stack ||
  24 -                   fp > (unsigned long)stack+THREAD_SIZE)
  25 +                   fp >= (unsigned long)stack+THREAD_SIZE)
  26                         return 0;
  27                 ip = *(u64 *)(fp+8);
  28                 if (!in_sched_functions(ip))
  29 Index: head-2008-11-25/arch/x86/mm/pat-xen.c
  30 ===================================================================
  31 --- head-2008-11-25.orig/arch/x86/mm/pat-xen.c  2008-11-27 09:35:47.000000000 +0100
  32 +++ head-2008-11-25/arch/x86/mm/pat-xen.c       2008-11-27 09:36:36.000000000 +0100
  33 @@ -415,12 +415,16 @@ static inline int range_is_allowed(unsig
  34         return 1;
  35  }
  36  #else
  37 +/* This check is needed to avoid cache aliasing when PAT is enabled */
  38  static inline int range_is_allowed(unsigned long mfn, unsigned long size)
  39  {
  40         u64 from = ((u64)mfn) << PAGE_SHIFT;
  41         u64 to = from + size;
  42         u64 cursor = from;
  43
  44 +       if (!pat_enabled)
  45 +               return 1;
  46 +
  47         while (cursor < to) {
  48                 if (!devmem_is_allowed(mfn)) {
  49                         printk(KERN_INFO