Re: [Xen-users] xen compilation is giving errors

["Fajar A. Nugraha" <list@xxxxxxxxx>]

On Wed, Feb 16, 2011 at 8:20 PM, Tapas Mishra <mightydreams@xxxxxxxxx> wrote:
>> make install-stubdom
>>
> Ok upto here things worked very well but
> I  installed apt-get build-dep xen-3.3
> as this archive msg says
> http://www.gossamer-threads.com/lists/xen/users/185290
>
>> and then compile dom0 kernel following
>> http://wiki.xensource.com/xenwiki/XenParavirtOps.
> I want to know if I can get a default .config file to compile a dom0
> kernel for 32 bit and 64 bit
> or I use the .config of my host OS (which right now does not have Xen) in 
> /boot

Depends on what you need. For example, for my RHEL5 test box I use
Oracle's kernel-uek (2.6.32) as a base and add these xen-specific
options:

CONFIG_XEN=y
CONFIG_XEN_PVHVM=y
CONFIG_XEN_MAX_DOMAIN_MEMORY=128
CONFIG_XEN_SAVE_RESTORE=y
CONFIG_XEN_DEBUG_FS=y
CONFIG_SWIOTLB_XEN=y
CONFIG_MICROCODE_XEN=y
CONFIG_XEN_DOM0=y
CONFIG_XEN_PRIVILEGED_GUEST=y
CONFIG_XEN_DOM0_PCI=y
CONFIG_XEN_PCI_PASSTHROUGH=y
CONFIG_PCI_XEN=y
CONFIG_XEN_PCIDEV_FRONTEND=y
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_NETXEN_NIC=m
CONFIG_XEN_NETDEV_FRONTEND=m
CONFIG_XEN_KBDDEV_FRONTEND=y
CONFIG_HVC_XEN=y
CONFIG_XEN_FBDEV_FRONTEND=y
CONFIG_XEN_BALLOON=y
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DEV_EVTCHN=y
CONFIG_XEN_BACKEND=y
CONFIG_XEN_NETDEV_BACKEND=m
CONFIG_XEN_BLKDEV_BACKEND=m
CONFIG_XEN_BLKDEV_TAP=m
CONFIG_XEN_BLKBACK_PAGEMAP=m
CONFIG_XEN_PCIDEV_BACKEND=m
CONFIG_XEN_PCIDEV_BACKEND_VPCI=y
CONFIG_XENFS=y
CONFIG_XEN_COMPAT_XENFS=y
CONFIG_XEN_SYS_HYPERVISOR=y
CONFIG_XEN_MCE=y
CONFIG_XEN_XENBUS_FRONTEND=y
CONFIG_XEN_GNTDEV=y
CONFIG_XEN_S3=y
CONFIG_ACPI_PROCESSOR_XEN=y
CONFIG_XEN_PLATFORM_PCI=m

Not all of them need to be set manually, the above was just a snippet
of my .config which contains "XEN".

When customizing the kernel config I use "make menuconfig", and search
where a particular config option would be (using "/").
Since you use Ubuntu, you might want to start with the default ubuntu
kernel config (/boot/config*) then adjust as necessary.

>> you have to use an awk version which defines "gensub" as mentioned in
>> the error messages.
> I am not very good when such error messages
> come but by what Fajar said I was able to proceed.

If you still get similar error, try "apt-get install gawk"

>>
>> Which distribution do you use for compiling ?
> I am using Ubuntu 9.04 32 bit desktop edition

Thats quite old, and not supported anymore (see https://wiki.ubuntu.com/LTS)
If you have time, I suggest you try newer version.

Personally, I'm sticking with these combination for my test server:
- RHEL5.6
- Gitco's Xen 4.0.1 rpm
- pv_ops kernel from JF's xen/stable-2.6.32.x
- native zfs (https://github.com/zfs-linux) plus a patch from
https://github.com/behlendorf/zfs/issues/#issue/97

RHEL6 should be good as well, but I haven't got time to play with it.

-- 
Fajar

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