Re: [PATCH RFC 2/2] KVM: s390: introduce and use KVM_REQ_VSIE_RESTART

From: Janosch Frank
Date: Thu Aug 09 2018 - 01:39:30 EST

On 07.08.2018 14:51, David Hildenbrand wrote:
> When we change the crycb (or execution controls), we also have to make sure
> that the vSIE shadow datastructures properly consider the changed
> values before rerunning the vSIE. We can achieve that by simply using a
> VCPU request now.
> This has to be a synchronous request (== handled before entering the
> (v)SIE again).
> The request will make sure that the vSIE handler is left, and that the
> request will be processed (NOP), therefore forcing a reload of all
> vSIE data (including rebuilding the crycb) when re-entering the vSIE
> interception handler the next time.
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>

Reviewed-by: Janosch Frank <frankja@xxxxxxxxxxxxx>

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