Re: [PATCH v2] xen: fix booting ballooned down hvm guest

[Boris Ostrovsky]

On 10/26/2017 05:50 AM, Juergen Gross wrote:
> Commit 96edd61dcf44362d3ef0bed1a5361e0ac7886a63 ("xen/balloon: don't
> online new memory initially") introduced a regression when booting a
> HVM domain with memory less than mem-max: instead of ballooning down
> immediately the system would try to use the memory up to mem-max
> resulting in Xen crashing the domain.
>
> For HVM domains the current size will be reflected in Xenstore node
> memory/static-max instead of memory/target.
>
> Additionally we have to trigger the ballooning process at once.
>
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.13
> Fixes: 96edd61dcf44362d3ef0bed1a5361e0ac7886a63 ("xen/balloon: don't
>        online new memory initially")
>
> Reported-by: Simon Gaiser <hw42@xxxxxxxxx>
> Suggested-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>