From patchwork Tue Apr 27 03:25:09 2010
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: A bit optimization for tlb_set_page()
From: Jun Koi <junkoi2004@gmail.com>
X-Patchwork-Id: 51029
Message-Id: <z2jfdaac4d51004262025o432d94f2xe474e09efd1fd634@mail.gmail.com>
To: qemu-devel@nongnu.org
Date: Tue, 27 Apr 2010 12:25:09 +0900

It is not necessary to continue searching for watchpoint when we
already found one and setup for handling watchpoint in a search loop
in tlb_set_page().
This patch breaks that search loop on then.

Signed-off-by: Jun Koi <junkoi2004@gmail.com>
Acked-by: Jan Kiszka <jan.kiszka@siemens.com>


diff --git a/exec.c b/exec.c
index 14d1fd7..6329775 100644
--- a/exec.c
+++ b/exec.c
@@ -2240,6 +2240,7 @@ void tlb_set_page(CPUState *env, target_ulong vaddr,
             /* TODO: The memory case can be optimized by not trapping
                reads of pages with a write breakpoint.  */
             address |= TLB_MMIO;
+            break;
         }
     }