Re: [Xen-devel] [PATCH RFC 0/4] 'reset everything' approach to PVHVM guest kexec

[Tim Deegan <tim@xxxxxxx>]

Hi,

At 15:35 +0200 on 03 Jun (1433345718), Vitaly Kuznetsov wrote:
> last week you expressed some concerns about if the toolstack-based
> approach to PVHVM guest kexec is the best. Here you can see the 'reset
> everything' approach to the same problem. It is the bare minimum of what
> should be done to make it possible for the new kernel to boot.

Thansk for prototyping this - it's very helpful.

> Despite
> the fact that this implementation is much smaller in size and that it
> doesn't require any toolstack changes I'm personally in favor of the
> previous toolstack-based approach as it looks more general, less fragile
> and easier to support to me. Please let me know your thoughts.

On the contrary, this looks neater, faster and with fewer special
cases (at least in the hypervisor) than the p2m-copying code.
I prefer it.  (I do appreciate that there may be more things needed to
get to a fully working system).

Cheers,

Tim.

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