linux/include/kvm/arm_arch_timer.h, branch v4.11

KVM: arm/arm64: Emulate the EL1 phys timer registers

2017-02-08T15:13:37Z

Emulate read and write operations to CNTP_TVAL, CNTP_CVAL and CNTP_CTL. Now VMs are able to use the EL1 physical timer. Signed-off-by: Jintack Lim Reviewed-by: Christoffer Dall Signed-off-by: Marc Zyngier

KVM: arm/arm64: Initialize the emulated EL1 physical timer

2017-02-08T15:13:34Z

Initialize the emulated EL1 physical timer with the default irq number. Signed-off-by: Jintack Lim Reviewed-by: Christoffer Dall Signed-off-by: Marc Zyngier

KVM: arm/arm64: Add the EL1 physical timer context

2017-02-08T15:13:34Z

Add the EL1 physical timer context. Signed-off-by: Jintack Lim Acked-by: Christoffer Dall Signed-off-by: Marc Zyngier

KVM: arm/arm64: Decouple kvm timer functions from virtual timer

2017-02-08T15:13:33Z

Now that we have a separate structure for timer context, make functions generic so that they can work with any timer context, not just the virtual timer context. This does not change the virtual timer functionality. Signed-off-by: Jintack Lim Acked-by: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Marc Zyngier

KVM: arm/arm64: Move cntvoff to each timer context

2017-02-08T15:13:33Z

Make cntvoff per each timer context. This is helpful to abstract kvm timer functions to work with timer context without considering timer types (e.g. physical timer or virtual timer). This also would pave the way for ever doing adjustments of the cntvoff on a per-CPU basis if that should ever make sense. Signed-off-by: Jintack Lim Signed-off-by: Christoffer Dall Signed-off-by: Marc Zyngier

KVM: arm/arm64: Abstract virtual timer context into separate structure

2017-02-08T15:13:32Z

Abstract virtual timer context into a separate structure and change all callers referring to timer registers, irq state and so on. No change in functionality. This is about to become very handy when adding the EL1 physical timer. Signed-off-by: Jintack Lim Acked-by: Christoffer Dall Acked-by: Marc Zyngier Signed-off-by: Marc Zyngier

KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems

2017-01-13T11:19:25Z

Current KVM world switch code is unintentionally setting wrong bits to CNTHCTL_EL2 when E2H == 1, which may allow guest OS to access physical timer. Bit positions of CNTHCTL_EL2 are changing depending on HCR_EL2.E2H bit. EL1PCEN and EL1PCTEN are 1st and 0th bits when E2H is not set, but they are 11th and 10th bits respectively when E2H is set. In fact, on VHE we only need to set those bits once, not for every world switch. This is because the host kernel runs in EL2 with HCR_EL2.TGE == 1, which makes those bits have no effect for the host kernel execution. So we just set those bits once for guests, and that's it. Signed-off-by: Jintack Lim Reviewed-by: Marc Zyngier Signed-off-by: Marc Zyngier

clocksource: Use a plain u64 instead of cycle_t

2016-12-25T10:04:12Z

There is no point in having an extra type for extra confusion. u64 is unambiguous. Conversion was done with the following coccinelle script: @rem@ @@ -typedef u64 cycle_t; @fix@ typedef cycle_t; @@ -cycle_t +u64 Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: John Stultz

KVM: arm/arm64: Move timer IRQ map to latest possible time

2016-05-20T13:39:41Z

We are about to modify the VGIC to allocate all data structures dynamically and store mapped IRQ information on a per-IRQ struct, which is indeed allocated dynamically at init time. Therefore, we cannot record the mapped IRQ info from the timer at timer reset time like it's done now, because VCPU reset happens before timer init. A possible later time to do this is on the first run of a per VCPU, it just requires us to move the enable state to be a per-VCPU state and do the lookup of the physical IRQ number when we are about to run the VCPU. Signed-off-by: Christoffer Dall Signed-off-by: Andre Przywara

KVM: arm/arm64: arch_timer: Remove irq_phys_map

2016-05-20T13:39:39Z

Now that the interface between the arch timer and the VGIC does not require passing the irq_phys_map entry pointer anymore, let's remove it from the virtual arch timer and use the virtual IRQ number instead directly. The remaining pointer returned by kvm_vgic_map_phys_irq() will be removed in the following patch. Signed-off-by: Andre Przywara Reviewed-by: Eric Auger Reviewed-by: Christoffer Dall