xen-devel

[Top] [All Lists]

[Xen-devel] [PATCH] PV-on-HVM: Define atomic_cmpxchg() for old Linux ker

from [KUWAMURA Shin'ya]

[Permanent Link][Original]

To:	xen-devel@xxxxxxxxxxxxxxxxxxx
Subject:	[Xen-devel] [PATCH] PV-on-HVM: Define atomic_cmpxchg() for old Linux kernels.
From:	"KUWAMURA Shin'ya" <kuwa@xxxxxxxxxxxxxx>
Date:	Fri, 22 May 2009 14:28:30 +0900 (JST)
Delivery-date:	Thu, 21 May 2009 22:29:46 -0700
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
List-help:	<mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id:	Xen developer discussion <xen-devel.lists.xensource.com>
List-post:	<mailto:xen-devel@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender:	xen-devel-bounces@xxxxxxxxxxxxxxxxxxx

Hi,

Building PV-on-HVM drivers for RHEL4U2 failed:
  
/ia64/xen-unstable.hg/unmodified_drivers/linux-2.6/platform-pci/../xenbus/xenbus_comms.c:81:
 warning: implicit declaration of function `atomic_cmpxchg'

This patch fixes it.

Best regards,
-- 
  KUWAMURA Shin'ya

# HG changeset patch
# User KUWAMURA Shin'ya <kuwa@xxxxxxxxxxxxxx>
# Date 1242892488 -32400
# Node ID 21aa4b4ac479051c2b8e5c2582844ec6b5c4fb47
# Parent  145e49b8574c8da3a72932a57c076227d38fee60
PV-on-HVM: Define atomic_cmpxchg() for old Linux kernels.

Signed-off-by: KUWAMURA Shin'ya <kuwa@xxxxxxxxxxxxxx>

diff -r 145e49b8574c -r 21aa4b4ac479 
unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h
--- a/unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h Tue May 
19 23:44:28 2009 +0100
+++ b/unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h Thu May 
21 16:54:48 2009 +0900
@@ -157,4 +157,8 @@ typedef irqreturn_t (*irq_handler_t)(int
 #define setup_xen_features xen_setup_features
 #endif
 
+#ifndef atomic_cmpxchg
+#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
 #endif
+
+#endif

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-devel] [PATCH] PV-on-HVM: Define atomic_cmpxchg() for old Linux kernels., KUWAMURA Shin'ya <=

Previous by Date:	[Xen-devel] Re: Performance overhead of paravirt_ops on native identified, Jeremy Fitzhardinge
Next by Date:	[Xen-devel] [PATCH] PV-on-HVM: xenbus - check HAVE_UNLOCKED_IOCTL for old Linux kernels., KUWAMURA Shin'ya
Previous by Thread:	[Xen-devel] hypercall_xlat_continuation(), Mukesh Rathor
Next by Thread:	[Xen-devel] [PATCH] PV-on-HVM: xenbus - check HAVE_UNLOCKED_IOCTL for old Linux kernels., KUWAMURA Shin'ya
Indexes:	[Date] [Thread] [Top] [All Lists]