This patchset adds support for the Virtualization extensions to QEMU's GICv3 emulation. This was the last missing piece that was stopping us from turning on the EL2 support in the CPU model, so the patchset also adds support for enabling it all on the virt board via the '-machine virtualization=on' option.
The result works well enough to allow booting a KVM outer guest kernel and then running QEMU + an inner guest under KVM inside it. The outer guest KVM also passes the kvm-unit-tests GIC tests. Changes v1->v2: * rebased on master; some of the earlier patches in v1 have now gone into master, as has Drew's ACPI cleanup set * new patch "psci.c: If EL2 implemented, start CPUs in EL2" fixes the problems with SMP configs not starting properly * includes Drew's changes to report SMC vs HVC in ACPI (slightly tweaked by me) Patches 1, 4-13, 15, 16 still need review. Git branch for this: https://git.linaro.org/people/peter.maydell/qemu-arm.git gicv3-virt thanks -- PMM Andrew Jones (1): hw/arm/virt-acpi-build: use SMC if booting in EL2 Peter Maydell (17): hw/intc/arm_gicv3: Add external IRQ lines for VIRQ and VFIQ hw/intc/arm_gic: Add external IRQ lines for VIRQ and VFIQ target-arm: Expose output GPIO line for VCPU maintenance interrupt hw/arm/virt: Wire VIRQ, VFIQ, maintenance irq lines from GIC to CPU target-arm: Add ARMCPU fields for GIC CPU i/f config hw/intc/gicv3: Add defines for ICH system register fields hw/intc/gicv3: Add data fields for virtualization support hw/intc/arm_gicv3: Add accessors for ICH_ system registers hw/intc/arm_gicv3: Implement ICV_ registers which are just accessors hw/intc/arm_gicv3: Implement ICV_ HPPIR, DIR and RPR registers hw/intc/arm_gicv3: Implement ICV_ registers EOIR and IAR hw/intc/arm_gicv3: Implement gicv3_cpuif_virt_update() hw/intc/arm_gicv3: Implement EL2 traps for CPU i/f regs hw/arm/virt: Support using SMC for PSCI target/arm/psci.c: If EL2 implemented, start CPUs in EL2 target-arm: Enable EL2 feature bit on A53 and A57 hw/arm/virt: Add board property to enable EL2 hw/intc/gicv3_internal.h | 79 +++ include/hw/arm/virt.h | 5 +- include/hw/intc/arm_gic_common.h | 2 + include/hw/intc/arm_gicv3_common.h | 21 + target/arm/cpu.h | 9 + hw/arm/virt-acpi-build.c | 29 +- hw/arm/virt.c | 87 ++- hw/arm/xlnx-zynqmp.c | 2 + hw/intc/arm_gic_common.c | 6 + hw/intc/arm_gicv3_common.c | 31 + hw/intc/arm_gicv3_cpuif.c | 1351 +++++++++++++++++++++++++++++++++++- target/arm/cpu.c | 15 + target/arm/cpu64.c | 8 + target/arm/psci.c | 25 +- hw/intc/trace-events | 33 + 15 files changed, 1642 insertions(+), 61 deletions(-) -- 2.7.4
