RE: [Xen-devel] Xen cannot boot with pvops dom0

["Han, Weidong" <weidong.han@xxxxxxxxx>]

Jun Koi wrote:
> On Thu, Jun 25, 2009 at 6:20 PM, Han, Weidong<weidong.han@xxxxxxxxx>
> wrote: 
>> I tried with latest Xen unstable (c/s 19833) with latest pvops dom0
>> (commit 384a55c0). Booting will hang, following is the serial
>> console output:  
>> 
>> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
>> input to Xen ) (XEN) Freed 128kB init memory.
>> mapping kernel into physical memory
>> Xen: setup ISA identity maps
>> about to get started...
>> (XEN) ioapic_guest_write: apic=0, pin=2, old_irq=0, new_irq=-1
>> (XEN) ioapic_guest_write: old_entry=000009f0, new_entry=00010900
>> (XEN) ioapic_guest_write: Attempt to remove IO-APIC pin of in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=4, old_irq=4, new_irq=-1
>> (XEN) ioapic_guest_write: old_entry=000009f1, new_entry=00010900
>> (XEN) ioapic_guest_write: Attempt to remove IO-APIC pin of in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=0, old_irq=-1, new_irq=0
>> (XEN) ioapic_guest_write: old_entry=00010900, new_entry=000009f0
>> (XEN) ioapic_guest_write: Attempt to add IO-APIC pin for in-use IRQ!
>> (XEN) ioapic_guest_write: apic=0, pin=19, old_irq=19, new_irq=19
>> (XEN) ioapic_guest_write: old_entry=0000a9c0, new_entry=0001a9c0
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=19, old_irq=19, new_irq=19
>> (XEN) ioapic_guest_write: old_entry=0000a9c0, new_entry=0001a9c0
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=23, old_irq=23, new_irq=23
>> (XEN) ioapic_guest_write: old_entry=0000a9d0, new_entry=0001a9d0
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=19, old_irq=19, new_irq=19
>> (XEN) ioapic_guest_write: old_entry=0000a9c0, new_entry=0001a9c0
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=16, old_irq=16, new_irq=16
>> (XEN) ioapic_guest_write: old_entry=0000a9b8, new_entry=0001a9b8
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! (XEN) ioapic_guest_write: apic=0, pin=18, old_irq=18, new_irq=18
>> (XEN) ioapic_guest_write: old_entry=0000a921, new_entry=0001a921
>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>> IRQ! 
>> 
>> 
>> Did anyone meet this issue? Is there any difference on build and
>> installation between pvops dom0 and 2.6.18 dom0? Following is my
>> instructions, pls correct me if something is wrong. Appreciate in
>> advance.   
>> 
>> My build and installation instructions:
>>        - cd xen-unstable.hg
>>        - make world (linux-2.6-pvops.git will be cloned)
>>        - make install
>> 
>> My grub entry:
>>        title Xen - pvops
>>                root (hd0,2)
>>                kernel /boot/xen.gz dom0_mem=512m
>>                module /boot/vmlinuz-2.6-30.rc3-tip ro root=/dev/sda3
>> console=tty0 console=ttyS0 
>> 
>> I also tried build pvops dom0 manually as follows, but it doesn't
>> help. 
>>        - cd linux-2.6-pvops.git
>>        - make
>>        - make modules_install
>>        - make install
>> 
> 
> I am not quite sure if that is the correct way to recompile kernel, as
> sometimes I have some problems with Dom0 booting after that.
> 
> I usually recompile Dom0 kernel this way: (from the root directory)
> 
> # make linux-2.6-xen-config  (to configure kernel options)
> # make linux-2.6-xen-build
> # make linux-2.6-xen-install
> 

I also tried this way (make linux-2.6-pvops-build), the problem is still there.

> Then dont forget to "mkinitramfs", of course

Yes, I always mkinitrd for it through "mkinitrd initrd-2.6-xen.img 
2.6.18.8-xen". 

It can boot with manually built pvops dom0 on my another platform, but I found 
xend cannot be started, there is no directory xen under /proc. That means 
drivers/xen are not installed, althrough they are built.

I just want to know anyone has successfully made Xen with pvops work, and can 
you share your instructions? Thanks.

Regards,
Weidong

> 
> Thanks,
> J


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