linux/virt/kvm
Christoffer Dall bbdd52cfcb KVM: arm/arm64: Avoid phys timer emulation in vcpu entry/exit
There is no need to schedule and cancel a hrtimer when entering and
exiting the guest, because we know when the physical timer is going to
fire when the guest programs it, and we can simply program the hrtimer
at that point.

Now when the register modifications from the guest go through the
kvm_arm_timer_set/get_reg functions, which always call
kvm_timer_update_state(), we can simply consider the timer state in this
function and schedule and cancel the timers as needed.

This avoids looking at the physical timer emulation state when entering
and exiting the VCPU, allowing for faster servicing of the VM when
needed.

Signed-off-by: Christoffer Dall <cdall@linaro.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
2017-11-06 16:23:16 +01:00
..
arm KVM: arm/arm64: Avoid phys timer emulation in vcpu entry/exit 2017-11-06 16:23:16 +01:00
async_pf.c kvm,async_pf: Use swq_has_sleeper() 2017-09-15 16:57:11 +02:00
async_pf.h KVM: fix checkpatch.pl errors in kvm/async_pf.h 2015-06-19 17:16:25 +02:00
coalesced_mmio.c KVM: move iodev.h from virt/kvm/ to include/kvm 2015-03-26 21:43:12 +00:00
coalesced_mmio.h KVM: make the declaration of functions within 80 characters 2015-09-14 18:43:19 +02:00
eventfd.c Revert "KVM: Don't accept obviously wrong gsi values via KVM_IRQFD" 2017-09-19 08:37:17 +02:00
irqchip.c KVM: use rcu access function for irq routing 2017-07-07 15:24:15 +02:00
Kconfig KVM: remove kvm_vcpu_compatible 2016-06-16 00:05:00 +02:00
kvm_main.c kvm: Serialize wq active checks in kvm_vcpu_wake_up() 2017-09-15 16:57:12 +02:00
vfio.c vfio: New external user group/file match 2017-06-28 13:50:05 -06:00
vfio.h kvm: vfio: fix unregister kvm_device_ops of vfio 2014-10-24 13:30:47 +02:00