This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-changelog] [xen-unstable] [powerpc] Use new method to detect NULL x

To: xen-changelog@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-changelog] [xen-unstable] [powerpc] Use new method to detect NULL xencomm handle
From: Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date: Wed, 09 Aug 2006 18:20:17 +0000
Delivery-date: Wed, 09 Aug 2006 11:23:00 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-changelog-request@lists.xensource.com?subject=help>
List-id: BK change log <xen-changelog.lists.xensource.com>
List-post: <mailto:xen-changelog@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-changelog>, <mailto:xen-changelog-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-changelog>, <mailto:xen-changelog-request@lists.xensource.com?subject=unsubscribe>
Reply-to: xen-devel@xxxxxxxxxxxxxxxxxxx
Sender: xen-changelog-bounces@xxxxxxxxxxxxxxxxxxx
# HG changeset patch
# User Jimi Xenidis <jimix@xxxxxxxxxxxxxx>
# Node ID 7c3a27bb291eba0f70baedd2f78d9bf5db553d0b
# Parent  a438506e241df054ba801fa08fe833005102aba9
[powerpc] Use new method to detect NULL xencomm handle

old method wasted cycles and could give false positive.

Signed-off-by: Jimi Xenidis <jimix@xxxxxxxxxxxxxx>
 xen/arch/powerpc/usercopy.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -r a438506e241d -r 7c3a27bb291e xen/arch/powerpc/usercopy.c
--- a/xen/arch/powerpc/usercopy.c       Fri Jul 28 13:00:57 2006 +0100
+++ b/xen/arch/powerpc/usercopy.c       Thu Jul 27 18:57:34 2006 -0400
@@ -238,5 +238,5 @@ int xencomm_handle_is_null(void *ptr)
     desc = (struct xencomm_desc *)paddr_to_maddr((unsigned long)ptr);
-    return (desc->address[0] == XENCOMM_INVALID);
+    return (desc->nr_addrs == 0);

Xen-changelog mailing list

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-changelog] [xen-unstable] [powerpc] Use new method to detect NULL xencomm handle, Xen patchbot-unstable <=