RE: [Xen-devel] iommu: mapping reserved region failed - Q35 -VT-DIssue

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

Stefan Bauer wrote:
> Han, Weidong schrieb:
>> or add "loglvl=all loglvl_guest=all" in grub kernel line like:
>>      kernel /boot/xen.gz dom0_mem=512m iommu=1 loglvl=all
>> loglvl_guest=all 
> 
> Weidong,
> 
> please see attached a even more verbose debugging output.
> Unfortunatel i was not able to redirect the console output to a serial
> terminal, so i took a screenshot[1].

Can you add some printk in domain_context_mapping()? Where does it exit?

You'd better make serial console work. Following is my grub including serial 
console config. 

title 3: xen on RHEL5 (x86_64)
        root (hd0,0)
        kernel /boot/xen.gz dom0_mem=512m console=com1 iommu=1 loglvl=all 
loglvl_guest=all
        module /boot/vmlinuz-2.6.18.8-xen ro root=/dev/sda1 xencons=ttyS 
console=tty0 console=ttyS0, pciback.hide=(01:00.0)
        module /boot/initrd-2.6.18.8-xen.img

Regards,
Weidong

> 
> [1] www.plzk.de/IMG_2598.JPG
> 
> HTH


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