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author | Konstantin Weitz | 2012-04-25 15:30:38 +0200 |
---|---|---|
committer | Marcelo Tosatti | 2012-05-01 02:38:31 +0200 |
commit | 41628d334361670d825fb03c04568f5ef9f084dc (patch) | |
tree | 88b2eadd0f7de12f1d8b226e4491532b8783ee94 /arch/s390/include/asm/kvm_host.h | |
parent | KVM: x86: Run PIT work in own kthread (diff) | |
download | kernel-qcow2-linux-41628d334361670d825fb03c04568f5ef9f084dc.tar.gz kernel-qcow2-linux-41628d334361670d825fb03c04568f5ef9f084dc.tar.xz kernel-qcow2-linux-41628d334361670d825fb03c04568f5ef9f084dc.zip |
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: Konstantin Weitz <WEITZKON@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/s390/include/asm/kvm_host.h')
-rw-r--r-- | arch/s390/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 7343872890a2..dd17537b9a9d 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -148,6 +148,7 @@ struct kvm_vcpu_stat { u32 instruction_sigp_restart; u32 diagnose_10; u32 diagnose_44; + u32 diagnose_9c; }; struct kvm_s390_io_info { |