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Re: [PATCH v7 04/15] s390x: protvirt: Inhibit balloon when switching to
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From: |
David Hildenbrand |
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Subject: |
Re: [PATCH v7 04/15] s390x: protvirt: Inhibit balloon when switching to protected mode |
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Date: |
Mon, 9 Mar 2020 14:42:17 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 |
On 09.03.20 12:21, Janosch Frank wrote:
> Ballooning in protected VMs can only be done when the guest shares the
> pages it gives to the host. If pages are not shared, the integrity
> checks will fail once those pages have been altered and are given back
> to the guest.
>
> Hence, until we have a solution for this in the guest kernel, we
> inhibit ballooning when switching into protected mode and reverse that
> once we move out of it.
>
> Signed-off-by: Janosch Frank <address@hidden>
> Reviewed-by: David Hildenbrand <address@hidden>
I think Christian requested to add the next steps.
--
Thanks,
David / dhildenb