lkml.org 
[lkml]   [2022]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v11 00/19] KVM: s390: pv: implement lazy destroy for reboot
On 6/3/22 08:56, Claudio Imbrenda wrote:
> Previously, when a protected VM was rebooted or when it was shut down,
> its memory was made unprotected, and then the protected VM itself was
> destroyed. Looping over the whole address space can take some time,
> considering the overhead of the various Ultravisor Calls (UVCs). This
> means that a reboot or a shutdown would take a potentially long amount
> of time, depending on the amount of used memory.
>
> This patchseries implements a deferred destroy mechanism for protected
> guests. When a protected guest is destroyed, its memory can be cleared
> in background, allowing the guest to restart or terminate significantly
> faster than before.
>
> There are 2 possibilities when a protected VM is torn down:
> * it still has an address space associated (reboot case)
> * it does not have an address space anymore (shutdown case)
>

Please add patches 1-13 to devel for some CI coverage.
I'll try reviewing the remaining patches this week.

\
 
 \ /
  Last update: 2022-06-14 16:31    [W:0.659 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site