From: Xu Zhang <xzhang@cs.uic.edu>
Date: Thu, 11 Apr 2013 04:46:58 +0000 (-0500)
Subject: mini-os/x86-64 entry: remove unnecessary event blocking
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1f79e0b61baa7517c528a84aaa7d06ff24a1880a;p=people%2Fliuw%2Flibxenctrl-split%2Fmini-os.git

mini-os/x86-64 entry: remove unnecessary event blocking

We don't need to block events here because:
 - if we came from "hypervisor_callback", events are disabled at this point,
   no need to block again;
 - if we came from "error_entry", we shouldn't touch event mask, for
   exception hanlding are meant to be interrupted by Xen events (virtual
   irq).

Signed-off-by: Xu Zhang <xzhang@cs.uic.edu>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
---

diff --git a/arch/x86/x86_64.S b/arch/x86/x86_64.S
index d9b34a7..909024d 100644
--- a/arch/x86/x86_64.S
+++ b/arch/x86/x86_64.S
@@ -186,7 +186,6 @@ ENTRY(hypervisor_callback2)
 
 error_exit:
 	RESTORE_REST
-	XEN_BLOCK_EVENTS(%rsi)		
 
 retint_kernel:
 retint_restore_args: