Christian Borntraeger 7a72f7a140 KVM: track pid for VCPU only on KVM_RUN ioctl ... We currently track the pid of the task that runs the VCPU in vcpu_load. If a yield to that VCPU is triggered while the PID of the wrong thread is active, the wrong thread might receive a yield, but this will most likely not help the executing thread at all. Instead, if we only track the pid on the KVM_RUN ioctl, there are two possibilities: 1) the thread that did a non-KVM_RUN ioctl is holding a mutex that the VCPU thread is waiting for. In this case, the VCPU thread is not runnable, but we also do not do a wrong yield. 2) the thread that did a non-KVM_RUN ioctl is sleeping, or doing something that does not block the VCPU thread. In this case, the VCPU thread can receive the directed yield correctly. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> CC: Rik van Riel <riel@redhat.com> CC: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> CC: Michael Mueller <mimu@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2014-12-04 15:29:13 +01:00
..
arm	arm/arm64: KVM: Fix BE accesses to GICv2 EISR and ELRSR regs	2014-10-16 10:57:41 +02:00
async_pf.c	kvm: Faults which trigger IO release the mmap_sem	2014-09-24 14:07:54 +02:00
async_pf.h
coalesced_mmio.c	KVM: return an error code in kvm_vm_ioctl_register_coalesced_mmio()	2014-01-30 11:56:09 +01:00
coalesced_mmio.h	KVM: Make coalesced mmio use a device per zone	2011-09-25 19:17:57 +03:00
eventfd.c	kvm: x86: move ioapic.c and irq_comm.c back to arch/x86/	2014-11-21 18:02:37 +01:00
iodev.h
irqchip.c	KVM: Move irq notifier implementation into eventfd.c	2014-08-05 14:26:24 +02:00
Kconfig	KVM: Give IRQFD its own separate enabling Kconfig option	2014-08-05 14:26:28 +02:00
kvm_main.c	KVM: track pid for VCPU only on KVM_RUN ioctl	2014-12-04 15:29:13 +01:00
vfio.c	kvm: vfio: fix unregister kvm_device_ops of vfio	2014-10-24 13:30:47 +02:00
vfio.h	kvm: vfio: fix unregister kvm_device_ops of vfio	2014-10-24 13:30:47 +02:00