Hi Nikolay, looks good to me overall. A rebase on Christoffer's vgic init series and Andre's v6 series will help in reviewing & testing. Best Regards Eric On 12/07/2014 10:37 AM, Nikolay Nikolaev wrote: > The IOEVENTFD KVM capability is a prerequisite for vhost support. > > This series enables the ioeventfd KVM capability on ARM. > > The implementation routes MMIO access in the IO abort handler to the KVM IO bus. > If there is already a registered ioeventfd handler for this address, the file > descriptor will be triggered. > > We extended the KVM IO bus API to expose the VCPU struct pointer. Now the VGIC > MMIO access is done through this API. For this to operate the VGIC registers a > kvm_io_device which represents the whole dist MMIO region. > > The patches are implemented on top of the latest Andre's vGICv3 work from here: > http://www.linux-arm.org/git?p=linux-ap.git;a=shortlog;h=refs/heads/kvm-gicv3/v4 > > The code was tested on Dual Cortex-A15 Exynos5250 (ARM Chromebook). > ARM64 build was verified, but not run on actual HW. > > Changes since v1: > - fixed x86 compilation > - GICv3/GICv3 dist base selection > - added vgic_unregister_kvm_io_dev to free the iodev resources > - enable eventfd on ARM64 > > --- > > Nikolay Nikolaev (5): > KVM: Redesign kvm_io_bus_ API to pass VCPU structure to the callbacks. > KVM: ARM: on IO mem abort - route the call to KVM MMIO bus > KVM: ARM VGIC add kvm_io_bus_ frontend > ARM/ARM64: enable linking against eventfd > ARM: enable KVM_CAP_IOEVENTFD > > > arch/arm/kvm/Kconfig | 1 > arch/arm/kvm/Makefile | 2 - > arch/arm/kvm/arm.c | 3 + > arch/arm/kvm/mmio.c | 32 +++++++++++ > arch/arm64/kvm/Kconfig | 1 > arch/arm64/kvm/Makefile | 2 - > arch/ia64/kvm/kvm-ia64.c | 4 + > arch/powerpc/kvm/mpic.c | 10 ++- > arch/powerpc/kvm/powerpc.c | 4 + > arch/s390/kvm/diag.c | 2 - > arch/x86/kvm/i8254.c | 14 +++-- > arch/x86/kvm/i8259.c | 12 ++-- > arch/x86/kvm/lapic.c | 4 + > arch/x86/kvm/vmx.c | 2 - > arch/x86/kvm/x86.c | 13 ++--- > include/kvm/arm_vgic.h | 3 - > include/linux/kvm_host.h | 10 ++- > virt/kvm/arm/vgic.c | 127 +++++++++++++++++++++++++++++++++++++++++--- > virt/kvm/coalesced_mmio.c | 5 +- > virt/kvm/eventfd.c | 4 + > virt/kvm/ioapic.c | 8 +-- > virt/kvm/iodev.h | 23 +++++--- > virt/kvm/kvm_main.c | 32 ++++++----- > 23 files changed, 237 insertions(+), 81 deletions(-) > > -- > Signature > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
