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Re: [Qemu-devel] [Xen-devel] [PATCH v5] xen: don't save/restore the phys

From: Anthony PERARD
Subject: Re: [Qemu-devel] [Xen-devel] [PATCH v5] xen: don't save/restore the physmap on VM save/restore
Date: Thu, 16 Mar 2017 14:46:56 +0000
User-agent: Mutt/1.8.0 (2017-02-23)

On Thu, Mar 16, 2017 at 02:06:21PM +0000, Igor Druzhinin wrote:
> On 16/03/17 12:54, Igor Druzhinin wrote:
> > On 16/03/17 12:26, Anthony PERARD wrote:
> >> I've tried to migrate a guest with this patch, but once migrated, the
> >> screen is black (via VNC, keyboard is working fine).
> >>
> > Hmm. It works for me - I've tried to migrate between identical QEMUs
> > with this patch on localhost. Save/restore also works fine.
> > 
> Ok. I could track down the issue - starting from v4 the patch doesn't
> work for cirrus. The reason is that post_load handler is different for
> cirrus and doesn't call the parent handler from common vga code.
> I manage to fix it by updating the corresponding handler by duplicating
> the code. But is it a good solution? Would it be better to have the
> common handler called in this function instead?

:(, vga_common_post_load have a misleading name. Yes, I think it would
be better to have a common post_load been called by every vga cards.

Anthony PERARD

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