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

[Olaf Hering <olaf@xxxxxxxxx>]

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?
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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