Re: [Xen-devel] Requesting for freeze exception for RMRR

["Chen, Tiejun" <tiejun.chen@xxxxxxxxx>]

> Please work with maintainers to get those hvmloader patches acked or
> reviewed.
I will do.

> > Note Jackson and Campbell also raised some comments to improve current
> > codes.
> >
> > 2. explain why it needs to be in this release (benefits).
> >
> > RMRR mechanism was broken for a long time and this makes VM always face
> > security issues. In addition, those associated devices can't be passed
> > through to VM and even result in VM crashes.
> >
> > 3. explain why it doesn't break things (risks).
> >
> > Our policy makes sure that system will work in the original way by default
> > as without the RMRR patches. And especially, this series just impacts those
> > platforms which have RMRR.
> Your patches touch crucial path in hvmloader to build memory map. There
> is risk that it may break hvmloader even if it is turned off.
>
> I would need at least some positive test results from you to confirm if
> this feature is turned off everything works as before.
Could you show what sort of test you need here? I just did boot a VM 
without any RDM parameters. I just think maybe someone had this good 
experience to check this.
Thanks
Tiejun

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