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Re: [Xen-devel] [PATCH] x86: Convert shadow-paging to Kconfig



On 19/01/16 13:38, Jan Beulich wrote:
>>>> On 19.01.16 at 14:30, <andrew.cooper3@xxxxxxxxxx> wrote:
>> On 19/01/16 13:23, Jan Beulich wrote:
>>>>>> On 19.01.16 at 10:46, <ian.campbell@xxxxxxxxxx> wrote:
>>>> On Mon, 2016-01-18 at 18:40 +0000, Andrew Cooper wrote:
>>>>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>>>> Does this have any impact on migration of either PV or HVM guests? What
>>>> about nested virt?
>>> At least PV guests won't be migratable anymore when there's no
>>> shadow mode.
>> What?  Shadow mode (or lack thereof) has no impact whatsoever on migration.
> So how would log-dirty mode work for a PV guest without shadow
> code?

Oops yes.  I am confusing the fact that logdirty and vram tracking are
independent, rather than logdiry and shadow.  (we have far too many modes)

I should update the text to talk about migration.

~Andrew

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