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Re: [Xen-users] pvgrub2(-like?) booting methods for PVHv2 guests

On 01/25/2018 02:46 PM, Hans van Kranenburg wrote:
> On 25/01/2018 13:29, Juergen Gross wrote:
>> On 25/01/18 13:19, Andy Smith wrote:
>>> Hi Hans,
>>> On Thu, Jan 25, 2018 at 12:39:56PM +0100, Hans van Kranenburg wrote:
>>>> And now I get console output and things happen. Only it can't find the 
>>>> disk.
>>> I was trying similar thing (4.10 and PVH) and also ended up with a
>>> guest with no block devices. I reported this on grub-devel:
>>>     <http://lists.gnu.org/archive/html/grub-devel/2018-01/msg00018.html>
>>> as I was thinking this was not a Xen problem since same thing boots
>>> okay outside grub with direct kernel boot.
>>> Juergen did reply and said I needed this kernel patch in the guest:
>>>     <https://lists.xen.org/archives/html/xen-devel/2017-11/msg01681.html>
>>> But I think you have this don't you?
> Yes, see my earlier mail with all the steps that I did, step 6.
>> As the ACPI tables are found, I'd say yes. :-)
> dmesg output is pretty different when I boot directly with the kernel
> and initrd copied on the dom0.
> Remember, it's the same kernel/initrd, and without grub in between it
> boots with all vcpus network and disk.
> With grub in between, this at least does look suspicious:
> [    0.032110] PCI: System does not support PCI

Eh, that's in both, stay awake Hans.

> And yes, there are also no successful netfront lines.
> Without grub: http://paste.debian.net/plainh/7120cef2
> With grub: http://paste.debian.net/plainh/426bed60

Or the diff between them, which shows what changes when inserting grub
in between:


I must admit I don't know too much (yet) about all those changed lines,
but this next is also a very interesting change?...

-Booting paravirtualized kernel on Xen PVH
+Booting paravirtualized kernel on Xen HVM


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