So far we have been getting away with letting the kernel choosing interrupt numbers for the timers in the kernel and we have crossed our fingers in hoping that the DT/ACPI provided by userspace matches with the interrupt number we use in the kernel for a given VCPU type. But as we are generally moving towards letting userspace be in more fine grained control of what is being emulated, let userspace decide the irq numbers for the timers. Slightly related, and therefore included in this series, we have recently added support for a userspace GIC while still supporting the generic timers and the PMU from inside the VM. Unfortunately we forgot to rework the code to actually let userspace create the PMU device without creating an in-kernel GIC. Tested on APM X-Gene, AMD Seattle, and TC2. QEMU patches used for testing can be found here: https://git.linaro.org/people/christoffer.dall/qemu-arm.git timer-pmu-irqs Thanks, -Christoffer Christoffer Dall (5): KVM: arm64: Allow creating the PMU without the in-kernel GIC KVM: arm: Handle VCPU device attributes in guest.c KVM: arm/arm64: Move irq_is_ppi() to header file KVM: arm/arm64: Move timer IRQ default init to arch_timer.c KVM: arm/arm64: Allow setting the timer IRQ numbers from userspace Documentation/virtual/kvm/devices/vcpu.txt | 41 +++++++-- arch/arm/include/asm/kvm_host.h | 22 ++--- arch/arm/include/uapi/asm/kvm.h | 8 ++ arch/arm/kvm/guest.c | 51 +++++++++++ arch/arm/kvm/reset.c | 16 +--- arch/arm64/include/uapi/asm/kvm.h | 3 + arch/arm64/kvm/guest.c | 9 ++ arch/arm64/kvm/reset.c | 16 +--- include/kvm/arm_arch_timer.h | 8 +- include/kvm/arm_vgic.h | 2 + virt/kvm/arm/arch_timer.c | 132 ++++++++++++++++++++++++++--- virt/kvm/arm/pmu.c | 29 ++++--- 12 files changed, 258 insertions(+), 79 deletions(-) -- 2.9.0
