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Re: [PATCH 0/8] xen: add pvh guest support

From: Daniel Kiper
Subject: Re: [PATCH 0/8] xen: add pvh guest support
Date: Tue, 9 Oct 2018 14:54:27 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Tue, Oct 09, 2018 at 11:35:28AM +0200, Juergen Gross wrote:
> 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.

Great! I was a bit afraid that it will never happen...

> 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

OK, so, let's leave it aside.

I have seen new patchset. Thanks a lot! I will take a look at it this
or next week.


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