[Xen-changelog] [xen master] x86: be more power-efficient when waiting forever

[patchbot@xxxxxxx]

commit a5ca03ea2f48ceedd835ba938999dc9c5e6a4690
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Dec 3 09:54:12 2013 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Dec 3 09:54:12 2013 +0100

    x86: be more power-efficient when waiting forever
    
    The effect is unchanged, but the processor will be spending most of its time
    in the C1 or C1E power state rather than C0.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Keir Fraser <keir@xxxxxxx>
---
 xen/arch/x86/traps.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index d8b3eac..8c355e5 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -1448,7 +1448,8 @@ void __init do_early_page_fault(struct cpu_user_regs 
*regs)
         printk("Stack dump: ");
         while ( ((long)stk & ((PAGE_SIZE - 1) & ~(BYTES_PER_LONG - 1))) != 0 )
             printk("%p ", _p(*stk++));
-        for ( ; ; ) ;
+        for ( ; ; )
+            halt();
     }
 }
 
--
generated by git-patchbot for /home/xen/git/xen.git#master

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