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When interrupting a vCPU thread, this patch actually tells the hypervisor to stop running guest code on that vCPU. Calling hv_vcpu_interrupt actually forces a vCPU exit, analogously to hv_vcpus_exit on aarch64. Alternatively, if the vCPU thread is not running the VM, it will immediately cause an exit when it attempts to do so. Previously, hvf_kick_vcpu_thread relied upon hv_vcpu_run returning very frequently, including many spurious exits, which made it less of a problem that nothing was actively done to stop the vCPU thread running guest code. The newer, more efficient hv_vcpu_run_until exits much more rarely, so a true "kick" is needed before switching to that. Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu> Message-ID: <20240605112556.43193-6-phil@philjordan.eu> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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