Messages in this thread | | | Date | Tue, 18 May 2021 18:04:11 +0200 | From | Cornelia Huck <> | Subject | Re: [PATCH v1 00/11] KVM: s390: pv: implement lazy destroy |
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On Tue, 18 May 2021 17:36:24 +0200 Claudio Imbrenda <imbrenda@linux.ibm.com> wrote:
> On Tue, 18 May 2021 17:05:37 +0200 > Cornelia Huck <cohuck@redhat.com> wrote: > > > On Mon, 17 May 2021 22:07:47 +0200 > > Claudio Imbrenda <imbrenda@linux.ibm.com> wrote:
> > > This means that the same address space can have memory belonging to > > > more than one protected guest, although only one will be running, > > > the others will in fact not even have any CPUs. > > > > Are those set-aside-but-not-yet-cleaned-up pages still possibly > > accessible in any way? I would assume that they only belong to the > > in case of reboot: yes, they are still in the address space of the > guest, and can be swapped if needed > > > 'zombie' guests, and any new or rebooted guest is a new entity that > > needs to get new pages? > > the rebooted guest (normal or secure) will re-use the same pages of the > old guest (before or after cleanup, which is the reason of patches 3 > and 4)
Took a look at those patches, makes sense.
> > the KVM guest is not affected in case of reboot, so the userspace > address space is not touched.
'guest' is a bit ambiguous here -- do you mean the vm here, and the actual guest above?
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