Re: [GIT PULL 7/9] KVM: s390: Backup the guest's machine check info

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> No. Several guest registers are shared with host registers and reloaded lazily.
> For example if the floating point registers are invalid, they will be invalid 
> for the host (but the registers contain the guest values).
> From a KVM perspective we can always turn off valid bits in case of doubts 
> (overindicate errors). So the current variant is certainly not perfect, but it
> at least will not claim correct registers when they are incorrect.
> We can certainly improve the handling in a future patch. (e.g. turn on validity
> for control registers), I will have a look.
> 

As far as I understand, that would then mean, enabling all validity
flags for registers that are not shared. Makes sense.


-- 

Thanks,

David
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