Hi,
When building the 2.6.31-rc9 kernel with xen
patches, obtained as per the instructions on
http://wiki.xensource.com/xenwiki/XenParavirtOps, i.e.,
$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git linux-2.6-xen
$ cd linux-2.6-xen
$ git checkout origin/xen/master -b xen/master
$ git pull
$ make menuconfig
I ran into the following error:
root@assail:/usr/src/linux-2.6-xen# make -j 12 modules
CHK include/linux/version.h
CHK include/linux/utsrelease.h
SYMLINK include/asm -> include/asm-x86
CALL scripts/checksyscalls.sh
CC [M] drivers/gpu/drm/ttm/ttm_agp_backend.o
CC [M] drivers/gpu/drm/via/via_irq.o
CC [M] drivers/gpu/drm/ttm/ttm_memory.o
CC [M] drivers/gpu/drm/via/via_drv.o
In file included from
/usr/src/linux-2.6-xen/arch/x86/include/asm/agp.h:4,
from drivers/gpu/drm/ttm/ttm_agp_backend.c:39:
include/linux/swiotlb.h:48: warning: âenum dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:48: warning: its scope is only this definition or declaration, which is probably not what you want
include/linux/swiotlb.h:51: warning: âenum dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:63: warning: âenum dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:68: warning: âenum dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:72: warning: âenum dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:76: warning: âenum dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:80: warning: âenum
dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:84: warning: âenum dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:89: warning: âenum dma_data_directionâ declared inside parameter list
include/linux/swiotlb.h:94: warning: âenum dma_data_directionâ declared inside parameter list
In file included from /usr/src/linux-2.6-xen/arch/x86/include/asm/agp.h:8,
from drivers/gpu/drm/ttm/ttm_agp_backend.c:39:
/usr/src/linux-2.6-xen/arch/x86/include/asm/dma-mapping.h: In function âget_dma_opsâ:
/usr/src/linux-2.6-xen/arch/x86/include/asm/dma-mapping.h:29: error: dereferencing pointer to incomplete type
/usr/src/linux-2.6-xen/arch/x86/include/asm/dma-mapping.h:32: error: dereferencing pointer to incomplete type
In file included from /usr/src/linux-2.6-xen/arch/x86/include/asm/dma-mapping.h:36,
from /usr/src/linux-2.6-xen/arch/x86/include/asm/agp.h:8,
from drivers/gpu/drm/ttm/ttm_agp_backend.c:39:
<snip>
The last change to the kernel was:
commit 3973dcf8835207714f10ce4847fa57e9f35b8197
Merge: ebf47a1 7676973
Author: Jeremy Fitzhardinge <
jeremy.fitzhardinge@xxxxxxxxxx>
Date: Thu Sep 17 12:47:49 2009 -0700
Merge commit 'xen/xen/xenfb' into xen/master
* commit 'xen/xen/xenfb':
xenfb: connect to backend before registering fb
The above issue can be resolved by the following patch:
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index cb1a663..f4ebffb
100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -2,6 +2,7 @@
#define __LINUX_SWIOTLB_H
#include <linux/types.h>
+#include <linux/dma-mapping.h>
struct device;
struct dma_attrs;
I did get the patch from the Fedora list, after googling, so maybe somebody already has it lined up for inclusion (
http://www.mail-archive.com/fedora-xen@xxxxxxxxxx/msg02913.html)?
Hope this helps,
-- Andy
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