Re: status of PV drivers in Xen 4.0

[Guillaume Rousse <Guillaume.Rousse@inria.fr>]

Le 30/03/2010 08:04, Pasi Kärkkäinen a écrit :
> On Mon, Mar 29, 2010 at 11:02:09PM +0200, Guillaume Rousse wrote:
>> Hello.
>>
>> The directory 'unmodified_drivers', in Xen-4.0rc8, seems to still
>> requires a 2.6.18 XenLinux kernel to build. For instance, overrides.mk
>> still refers to $(objtree)/include/linux/autoconf.h, instead of
>> $(objtree)/include/generated/autoconf.h in recent kernels.
>>
> 
> I believe it should compile with 2.6.27 aswell.. or if it doesn't,
> please let us know.
> 
> See here for PV-on-HVM drivers building instructions for SLES11 2.6.27:
> http://wp.colliertech.org/cj/?p=653
> 
> If the unmodified_drivers from Xen 4.0 doesn't build for 2.6.27,
> then we should definitely add the (possible) patches from Novell.
Whatever XenLinux tree I tried (xensource 2.6.18, or novell 2.6.32), it
fails to build for 2.6.33. It's probably a trivial error, such as a
missing header file, but I'm really not enough kernel-aware to find
which one:

[guillomovitch@n2 linux-2.6]$ make -C
/lib/modules/2.6.33.1-desktop-2mnb/build M=$PWD modules
make: entrant dans le répertoire « /usr/src/linux-2.6.33.1-desktop-2mnb »
  CC [M]
/home/guillomovitch/cooker/xen/BUILD/xen-4.0-testing.hg/unmodified_drivers/linux-2.6/balloon/balloon.o
In file included from
/home/guillomovitch/cooker/xen/BUILD/xen-4.0-testing.hg/unmodified_drivers/linux-2.6/balloon/balloon.c:52:
include/xen/interface/memory.h:32: error: expected
specifier-qualifier-list before 'GUEST_HANDLE'
include/xen/interface/memory.h:53: warning: data definition has no type
or storage class
include/xen/interface/memory.h:53: warning: type defaults to 'int' in
declaration of 'DEFINE_GUEST_HANDLE_STRUCT'
include/xen/interface/memory.h:53: warning: parameter names (without
types) in function declaration

BTW, the pvops-based 2.6.32.11 kernel isn't a suitable xenlinux tree, it
misses needed files.
-- 
BOFH excuse #284:

Electrons on a bender