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8c2dbb79c6
The yield count in the VPA is supposed to be incremented every time we enter the guest, and every time we exit the guest, so that its value is even when the vcpu is running in the guest and odd when it isn't. However, it's currently possible that we increment the yield count on the way into the guest but then find that other CPU threads are already exiting the guest, so we go back to nap mode via the secondary_too_late label. In this situation we don't increment the yield count again, breaking the relationship between the LSB of the count and whether the vcpu is in the guest. To fix this, we move the increment of the yield count to a point after we have checked whether other CPU threads are exiting. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> |
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