Re: [Xen-devel] [PATCH] hvm: handle PoD and grant pages in HVMOP_get_mem_type

[Tim Deegan <tim@xxxxxxx>]

At 17:33 +0200 on 22 Oct (1350927213), Olaf Hering wrote:
> On Mon, Oct 22, Tim Deegan wrote:
> 
> > At 16:09 +0200 on 19 Oct (1350662980), Olaf Hering wrote:
> > > hvm: handle PoD and grant pages in HVMOP_get_mem_type
> > > 
> > > During kexec in a ballooned PVonHVM guest the new kernel needs to check
> > > each pfn if its backed by a mfn to find ballooned pages. Currently all
> > > PoD and grant pages will appear as HVMMEM_mmio_dm, so the new kernel has
> > > to assume they are ballooned. This is wrong: PoD pages may turn into
> > > real RAM at runtime, grant pages are also RAM.
> > > 
> > > Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
> > 
> > Applied, thanks.
> 
> Would you backport this to 4.2 and 4.1?

Actually, I don't handle backports.  IIRC Jan owns 4.2-testing and Keir
4.1-testing; I've CC'd them both.

Cheers,

Tim.

> Without this change the guest will get a wrong picture.
> Too bad I did not consider this initially in 23298:26413986e6e0.
> 
> Olaf
> 
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