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

On Tue, 2016-01-19 at 13:39 +0000, Andrew Cooper wrote:
> On 19/01/16 09:46, Ian Campbell 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?
> Not in the slightest.
> > What about nested virt?
> Nested virt is completely broken with respect to migration.

Sorry, I meant impact (generally) on nested, not WRT migration. AIUI shadow
is required for either L1 or L2 (not sure which).

> > Are things which are defined in xen/arch/*/Rules.mk in this way
> > overrideable from the old top-level .config or does one need to dive
> > deeper
> > to modify them?
> Absolutely everything anywhere in the build system is/was configurable
> from the top .config

OK, good, so no change here, that's fine then.

> > Lastly, Tim is maintainer of the shadow code and should have been CC-d,
> > also George as maintainer of the mm stuff might have an interest. Both
> > CC-s 
> > added.
> Oops yes, although this is an entirely mechanical alteration to an
> option which already existed.
> ~Andrew

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