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SubjectRe: [PATCH v6 09/13] KVM: s390: add the GIB and its related life-cyle functions
On Thu, 24 Jan 2019 13:59:35 +0100
Michael Mueller <> wrote:

> The Guest Information Block (GIB) links the GISA of all guests
> that have adapter interrupts pending. These interrupts cannot be
> delivered because all vcpus of these guests are currently in WAIT
> state or have masked the respective Innterruption Sub Class (ISC).
> If enabled, a GIB alert is issued on the host to schedule these
> guests to run suitable vcpus to consume the pending interruptions.
> This mechanism allows to process adapter interrupts for currently
> not running guests.
> The GIB is created during host initialization and associated with
> the Adapter Interruption Facility in case an Adapter Interruption
> Virtualization Facility is available.
> The GIB initialization and thus the activation of the related code
> will be done in an upcoming patch of this series.
> Signed-off-by: Michael Mueller <>
> Reviewed-by: Janosch Frank <>
> Reviewed-by: Christian Borntraeger <>
> Reviewed-by: Cornelia Huck <>
> Reviewed-by: Pierre Morel <>

I don't agree with the commit message to 100%, but I'd rather not start
a discussion.

Acked-by: Halil Pasic <>


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