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

[Boris Ostrovsky]

On 10/26/2017 10:12 AM, Boris Ostrovsky wrote:
> 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>
>

Applied to for-linus-4.14c.

-boris