On Mon, Jul 18, 2016 at 11:48:12AM +0100, Vladimir Murzin wrote: > 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 ARMv7 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 Would you mind also trying my arm/gic branch for kvm-unit-tests? Patch series here http://www.spinics.net/lists/kvm/msg135692.html Branch here https://github.com/rhdrjones/kvm-unit-tests/commits/arm/gic As it uses QEMU's mach-virt machine type you'll only be able to configure a max of 123 cpus, which can be done as follows export QEMU=/path/to/qemu-system-arm $QEMU -machine virt,accel=kvm,gic-version=3 -cpu host \ -device virtio-serial-device \ -device virtconsole,chardev=ctd -chardev testdev,id=ctd \ -display none -serial stdio \ -kernel arm/gic.flat \ -smp 123 -append ipi Build on an arm host with ./configure && make Thanks, drew > > Thanks! > > Vladimir Murzin (7): > arm64: KVM: Move GIC accessors to arch_gicv3.h > arm64: KVM: Move vgic-v3 save/restore to virt/kvm/arm/hyp > KVM: arm: vgic-new: improve compatibility with 32-bit > ARM: update MPIDR accessors macro > ARM: move system register accessors to asm/cp15.h > ARM: KVM: Get ready to use vgic-v3 > ARM: KVM: Unlock vgic-v3 support > > 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 | 4 + > arch/arm/include/asm/kvm_hyp.h | 20 ++--- > arch/arm/include/uapi/asm/kvm.h | 7 ++ > arch/arm/kvm/Makefile | 2 + > arch/arm/kvm/coproc.c | 36 ++++++++ > arch/arm/kvm/hyp/Makefile | 1 + > arch/arm/kvm/hyp/switch.c | 20 ++++- > arch/arm64/include/asm/arch_gicv3.h | 13 +++ > arch/arm64/kvm/Kconfig | 4 - > arch/arm64/kvm/hyp/Makefile | 2 +- > 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 | 8 -- > virt/kvm/arm/vgic/vgic-mmio-v3.c | 6 +- > virt/kvm/arm/vgic/vgic-mmio.c | 2 - > virt/kvm/arm/vgic/vgic.h | 53 ------------ > 20 files changed, 186 insertions(+), 125 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 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
