Re: [Xen-devel] pv_ops dom0 and kernel console output problem

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Dec 26, 2008 at 01:51:45PM +0200, Pasi Kärkkäinen wrote:
> Hello list!
> 
> I'm trying out pv_ops dom0 patches, and I'm having problems getting any output
> from the kernel to the console. 
> 
> grub config:
> 
> title dom0-test (2.6.28-rc8-tip)
>       root (hd0,0)
>       kernel /xen-3.3.gz dom0_mem=512M noreboot loglvl=all guest_loglvl=all
>       module /vmlinuz-2.6.28-rc8-tip ro root=/dev/vg00/lv01 console=hvc0 
> earlyprintk=xen pci=nomsi
>       module /initrd-2.6.28-rc8-tip.img
> 
> Is that correct? I'd appreciate comments from people who got it working.. 
> 
> I can see Xen messages on the (vga) console, but the last line I see is:
> 
> (XEN)  Xen is relinquishing VGA console 
> 
> I don't see anything from the actual dom0 kernel.. 
> 
> I'm running Xen 3.3.0-2 from Fedora rawhide (includes backported pv_ops
> sysfs ballooning support). 
> 
> - Is there something else that's needed from (xen-unstable) hypervisor? 
> - Or is this problem related only to the pv_ops dom0 kernel?
> 
> My Xen hypervisor and dom0 kernel are both 32 bit PAE.
> 

# grep XEN .config
CONFIG_XEN=y
CONFIG_XEN_MAX_DOMAIN_MEMORY=32
CONFIG_XEN_SAVE_RESTORE=y
CONFIG_XEN_DEBUG_FS=y
CONFIG_XEN_DOM0=y
CONFIG_XEN_PRIVILEGED_GUEST=y
CONFIG_XEN_DOM0_PCI=y
CONFIG_PCI_XEN=y
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_NETXEN_NIC=m
CONFIG_XEN_NETDEV_FRONTEND=y
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_BLKDEV_BACKEND=y
CONFIG_XENFS=y
CONFIG_XEN_COMPAT_XENFS=y
CONFIG_XEN_XENBUS_FRONTEND=y

# grep PRINTK .config
CONFIG_PRINTK=y
CONFIG_SND_VERBOSE_PRINTK=y
# CONFIG_PRINTK_TIME is not set
CONFIG_BOOT_PRINTK_DELAY=y
# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
CONFIG_EARLY_PRINTK=y
CONFIG_EARLY_PRINTK_DBGP=y

Dunno if printk stuff is related/needed..

Anyway, do my dom0 kernel settings look correct? Still haven't figured out
how to get the kernel console output.. 

-- Pasi

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