Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

[pandora-kernel.git] / arch / x86 / xen / setup.c

diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 38fdffa..a8a66a5 100644 (file)
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -23,7 +23,6 @@
 #include <xen/interface/callback.h>
 #include <xen/interface/memory.h>
 #include <xen/interface/physdev.h>
-#include <xen/interface/memory.h>
 #include <xen/features.h>
 
 #include "xen-ops.h"
@@ -180,26 +179,28 @@ char * __init xen_memory_setup(void)
        e820.nr_map = 0;
        xen_extra_mem_start = mem_end;
        for (i = 0; i < memmap.nr_entries; i++) {
-               unsigned long long end = map[i].addr + map[i].size;
+               unsigned long long end;
+
+               /* Guard against non-page aligned E820 entries. */
+               if (map[i].type == E820_RAM)
+                       map[i].size -= (map[i].size + map[i].addr) % PAGE_SIZE;
 
-               if (map[i].type == E820_RAM) {
-                       if (map[i].addr < mem_end && end > mem_end) {
-                               /* Truncate region to max_mem. */
-                               u64 delta = end - mem_end;
+               end = map[i].addr + map[i].size;
+               if (map[i].type == E820_RAM && end > mem_end) {
+                       /* RAM off the end - may be partially included */
+                       u64 delta = min(map[i].size, end - mem_end);
 
-                               map[i].size -= delta;
-                               extra_pages += PFN_DOWN(delta);
+                       map[i].size -= delta;
+                       end -= delta;
 
-                               end = mem_end;
-                       }
+                       extra_pages += PFN_DOWN(delta);
                }
 
-               if (end > xen_extra_mem_start)
+               if (map[i].size > 0 && end > xen_extra_mem_start)
                        xen_extra_mem_start = end;
 
-               /* If region is non-RAM or below mem_end, add what remains */
-               if ((map[i].type != E820_RAM || map[i].addr < mem_end) &&
-                   map[i].size > 0)
+               /* Add region if any remains */
+               if (map[i].size > 0)
                        e820_add_region(map[i].addr, map[i].size, map[i].type);
        }
 
@@ -253,20 +254,6 @@ char * __init xen_memory_setup(void)
        return "Xen";
 }
 
-static void xen_idle(void)
-{
-       local_irq_disable();
-
-       if (need_resched())
-               local_irq_enable();
-       else {
-               current_thread_info()->status &= ~TS_POLLING;
-               smp_mb__after_clear_bit();
-               safe_halt();
-               current_thread_info()->status |= TS_POLLING;
-       }
-}
-
 /*
  * Set the bit indicating "nosegneg" library variants should be used.
  * We only need to bother in pure 32-bit mode; compat 32-bit processes
@@ -363,7 +350,12 @@ void __init xen_arch_setup(void)
               MAX_GUEST_CMDLINE > COMMAND_LINE_SIZE ?
               COMMAND_LINE_SIZE : MAX_GUEST_CMDLINE);
 
-       pm_idle = xen_idle;
+       /* Set up idle, making sure it calls safe_halt() pvop */
+#ifdef CONFIG_X86_32
+       boot_cpu_data.hlt_works_ok = 1;
+#endif
+       pm_idle = default_idle;
+       boot_option_idle_override = IDLE_HALT;
 
        fiddle_vdso();
 }