KVM: X86: Yield to IPI target if necessary

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When sending a call-function IPI-many to vCPUs, yield if any of
the IPI target vCPUs was preempted, we just select the first
preempted target vCPU which we found since the state of target
vCPUs can change underneath and to avoid race conditions.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Wanpeng Li 2019-06-11 20:23:48 +08:00 • committed by Paolo Bonzini

parent 11e349143e

commit f85f6e7bc9

4 changed files with 34 additions and 0 deletions

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include/uapi/linux/kvm_para.h

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