Hi, This is an attempt to make use vgic-v3 under arch/arm since save-restore functionality got re-written in C and can be shared between arm/arm64 like it has already been done for vgic-v2 and timer. With this patches I'm able to get 32 core an AArch32 ARMv8 guest boot: ... GICv3: CPU31: found redistributor 703 region 0:0x000000003ffd0000 CPU31: thread -1, cpu 3, socket 7, mpidr 80000703 Brought up 32 CPUs SMP: Total of 32 processors activated (768.00 BogoMIPS). CPU: All CPU(s) started in SVC mode. ... Additionally, quite lightweight test based on Self IPI guest test[1] has been run with up to 255 cpus. [1] http://www.spinics.net/lists/kvm/msg128974.html Changelog: v2 -> v3 - rebased on v4.8-rc5 - commit messages are reworked to be more precise and clear (I hope so) - MPIDR_HWID_BITMASK is used to discard Aff3 in MPIDR_AFFINITY_LEVEL macro - cast to u64 is used instead of abuse of GENMASK_ULL while building value for typer register - static keys are used to select GIC backend - config option to guard ITS code is moved to separate patch v1 -> v2 - rebased on v4.8-rc2 - introduced guard for ITS code Thanks! Vladimir Murzin (8): arm64: KVM: Use static keys for selecting the GIC backend arm64: KVM: Move GIC accessors to arch_gicv3.h arm64: KVM: Move vgic-v3 save/restore to virt/kvm/arm/hyp KVM: arm64: vgic-its: Introduce config option to guard ITS specific code KVM: arm: vgic: Support 64-bit data manipulation on 32-bit host systems ARM: Change MPIDR_AFFINITY_LEVEL to ignore Aff3 ARM: Move system register accessors to asm/cp15.h ARM: KVM: Support vgic-v3 arch/arm/include/asm/arch_gicv3.h | 91 +++++++++++++++++---- arch/arm/include/asm/cp15.h | 15 ++++ arch/arm/include/asm/cputype.h | 3 +- arch/arm/include/asm/kvm_asm.h | 3 + arch/arm/include/asm/kvm_host.h | 13 +++ arch/arm/include/asm/kvm_hyp.h | 20 +---- arch/arm/include/asm/virt.h | 8 ++ arch/arm/include/uapi/asm/kvm.h | 7 ++ arch/arm/kernel/vmlinux.lds.S | 6 ++ arch/arm/kvm/Makefile | 2 + arch/arm/kvm/arm.c | 19 +++++ arch/arm/kvm/coproc.c | 36 ++++++++ arch/arm/kvm/hyp/Makefile | 1 + arch/arm/kvm/hyp/switch.c | 12 ++- arch/arm64/include/asm/arch_gicv3.h | 13 +++ arch/arm64/include/asm/kvm_host.h | 15 ++++ arch/arm64/include/asm/kvm_hyp.h | 2 - arch/arm64/include/asm/virt.h | 7 ++ arch/arm64/kernel/vmlinux.lds.S | 6 ++ arch/arm64/kvm/Kconfig | 4 +- arch/arm64/kvm/hyp/Makefile | 2 +- arch/arm64/kvm/hyp/switch.c | 19 ++--- include/kvm/arm_vgic.h | 8 -- {arch/arm64/kvm => virt/kvm/arm}/hyp/vgic-v3-sr.c | 13 --- virt/kvm/arm/vgic/vgic-kvm-device.c | 11 +-- virt/kvm/arm/vgic/vgic-mmio-v3.c | 8 +- virt/kvm/arm/vgic/vgic-mmio.c | 2 - virt/kvm/arm/vgic/vgic-mmio.h | 4 +- virt/kvm/arm/vgic/vgic.h | 54 +----------- 29 files changed, 265 insertions(+), 139 deletions(-) rename {arch/arm64/kvm => virt/kvm/arm}/hyp/vgic-v3-sr.c (96%) -- 1.7.9.5 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
