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Re: [Xen-devel] [PATCH 0/8] xen: add pvh guest support
- To: The development of GNU GRUB <grub-devel@xxxxxxx>, Daniel Kiper <daniel.kiper@xxxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Tue, 9 Oct 2018 11:35:28 +0200
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- Cc: phcoder@xxxxxxxxx, xen-devel@xxxxxxxxxxxxx
- Delivery-date: Tue, 09 Oct 2018 09:35:39 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 15/02/2018 13:02, Daniel Kiper wrote:
> Hi Juergen,
>
> Sorry for huge delay. It looks that I am recovering slowly and
> probably I will have more time for reviews.
>
> On Wed, Nov 29, 2017 at 02:46:42PM +0100, Juergen Gross wrote:
>> This patch series adds support for booting Linux as PVH guest.
>>
>> Similar to i386/xen and x86_64/xen platforms the new i386/xenpvh
>> platform grub is booted as a standalone image directly by Xen.
>>
>> For booting Linux kernel it is using the standard linux kernel
>> loader. The only modification of the linux loader is to pass the
>> ACPI RSDP address via boot parameters to the kernel, as that table
>> might not be located at the usual physical address just below 1MB.
>
> AIUI PVH is quite generic idea and can be implemented by different
> virtualization platforms. IIRC Maran Wilson works on PVH for KVM.
> So, would not it make more sense to have platform independent GRUB2
> PVH code and then on top of that build Xen and KVM support? Could
> you do that?
Finally I have some time to work on this series again.
I don't think this makes sense now for the following reasons:
- Maran's series is stalled
- The main work is hypervisor specific and I have no idea right now
what would be needed for KVM
- Maran's series was targeted for a quick boot of the kernel right
from qemu without any other boot loader
Juergen
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