[libvirt] [PATCH] migrate VMs between different-endian hosts

[Stefan Berger]

On 04/14/2011 12:53 PM, Eric Blake wrote:
> On 04/09/2011 09:48 AM, Stefan Berger wrote:
>> This patch enables the migration of Qemu VMs between hosts of different
>> endianess. I tested this by migrating a i686 VM between a x86 and ppc64
>> host.
>>
>> I am converting the 'int's in the VM's state header to uint32_t assuming
>> this doesn't break compatibility with existing deployments other than
>> Linux.
>>
>> Signed-off-by: Stefan Berger<stefanb at linux.vnet.ibm.com>
>>
>> ---
>>   src/qemu/qemu_driver.c |   25 ++++++++++++++++++++-----
>>   1 file changed, 20 insertions(+), 5 deletions(-)
>>
>> Index: libvirt-acl/src/qemu/qemu_driver.c
>> ===================================================================
>> --- libvirt-acl.orig/src/qemu/qemu_driver.c
>> +++ libvirt-acl/src/qemu/qemu_driver.c
>> @@ -43,6 +43,7 @@
>>   #include<sys/wait.h>
>>   #include<sys/ioctl.h>
>>   #include<sys/un.h>
>> +#include<byteswap.h>
> This won't work unless you also modify bootstrap.conf to include the
> gnulib byteswap module.
>
> ACK with that nit fixed.
>
I don't think it's necessary to include it there:

# rpm -q --whatprovides /usr/include/byteswap.h
glibc-headers-2.12.90-21.x86_64

    Stefan