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Commit 41628d33 authored by Konstantin Weitz's avatar Konstantin Weitz Committed by Marcelo Tosatti
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KVM: s390: Implement the directed yield (diag 9c) hypervisor call for KVM



This patch implements the directed yield hypercall found on other
System z hypervisors. It delegates execution time to the virtual cpu
specified in the instruction's parameter.

Useful to avoid long spinlock waits in the guest.

Christian Borntraeger: moved common code in virt/kvm/

Signed-off-by: default avatarKonstantin Weitz <WEITZKON@de.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent b6ddf05f
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