On Fri, Mar 02, 2018 at 02:29:29PM -0800, Maran Wilson wrote:
> On 3/2/2018 1:20 PM, Konrad Rzeszutek Wilk wrote:
> >On Fri, Mar 02, 2018 at 12:54:29PM -0800, Maran Wilson wrote:
> >>The start info structure that is defined as part of the x86/HVM direct boot
> >>ABI and used for starting Xen PVH guests would be more versatile if it also
> >>included a way to pass information about the memory map to the guest. This
> >>would allow KVM guests to share the same entry point.
> >Would it be better if there was an tag/length as well? And maybe more dynamic
> >so that if you want to add more structures you can identify them tags?
> >Like what Multiboot2 has?
> That sounds like a decent idea if we expect this structure to
> continue to grow and expand in the future. But I'd be hesitant to
> make it part of this patch series. Mostly because it doesn't add
> value to the existing use case(s) and there's a risk we end up going
> down a less than ideal path trying to design for anticipated (but
> presently unknown) use cases.
> I don't think the currently proposed changes would prevent us from
> doing something like you describe in the future, so I guess I'd
> prefer to leave that discussion for if/when we run into additional
> use cases that require new structures. But if there is overwhelming
> support for the idea, I can work on drafting up a proposal for what
> that would look like.

Granted! However, if you change your mind or circumstances have changed
just take a look at Multiboot2 spec. There is a chance that you can use
it as is or if it is not possible you can add what you need. Or in the
worst case you can steal the idea.


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