Paolo Bonzini aefdc2ed44 KVM: Avoid atomic operations when kicking the running vCPU ...

If we do have the vcpu mutex, as is the case if kvm_running_vcpu is set
to the target vcpu of the kick, changes to vcpu->mode do not need atomic
operations; cmpxchg is only needed _outside_ the mutex to ensure that
the IN_GUEST_MODE->EXITING_GUEST_MODE change does not race with the vcpu
thread going OUTSIDE_GUEST_MODE.

Use this to optimize the case of a vCPU sending an interrupt to itself.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2021-12-08 04:24:44 -05:00

..

kvm

KVM: Avoid atomic operations when kicking the running vCPU

2021-12-08 04:24:44 -05:00

lib

Revert "irqbypass: do not start cons/prod when failed connect"

2021-05-15 10:26:55 +01:00

Makefile

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00