From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Fedin Subject: [PATCH v7 0/6] KVM: arm64: Implement API for vGICv3 live migration Date: Mon, 07 Dec 2015 15:29:30 +0300 Message-ID: Cc: Christoffer Dall , Marc Zyngier , Andre Przywara To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Return-path: Received: from mailout1.w1.samsung.com ([210.118.77.11]:25102 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754193AbbLGM3m (ORCPT ); Mon, 7 Dec 2015 07:29:42 -0500 Received: from eucpsbgm2.samsung.com (unknown [203.254.199.245]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0NYZ0052GMPG1QB0@mailout1.w1.samsung.com> for kvm@vger.kernel.org; Mon, 07 Dec 2015 12:29:40 +0000 (GMT) Sender: kvm-owner@vger.kernel.org List-ID: This patchset adds necessary userspace API in order to support vGICv3 live migration. GICv3 registers are accessed using device attribute ioctls, similar to GICv2. v6 => v7: - Rebased on top of linux-next of 07.12.2015, thrown away unnecessary part v5 => v6: - Rebased on top of linux-next of 23.11.2015 - Use original API documentation patch, with minor changes only. - Quit reusing KVM_DEV_ARM_VGIC_CPUID_MASK, do not touch vGICv2 API at all. - Fixed some issues reported by the new checkpatch v4 => v5: - Adapted to new API by Peter Maydell, Marc Zyngier and Christoffer Dall. Acked-by's on the documentation were dropped, just in case, because i slightly adjusted it. Additionally, i merged all doc updates into one patch. v3 => v4: - Split pure refactoring from anything else - Documentation brought up to date - Cleaned up 'mmio' structure usage in vgic_attr_regs_access(), use call_range_handler() for 64-bit access handling - Rebased on new linux-next v2 => v3: - KVM_DEV_ARM_VGIC_CPUID_MASK enlarged to 20 bits, allowing more than 256 CPUs. - Bug fix: Correctly set mmio->private, necessary for redistributor access. - Added accessors for ICC_AP0R and ICC_AP1R registers - Rebased on new linux-next v1 => v2: - Do not use generic register get/set API for CPU interface, use only device attributes. - Introduce size specifier for distributor and redistributor register accesses, do not assume size any more. - Lots of refactor and reusable code extraction. - Added forgotten documentation Christoffer Dall (1): KVM: arm/arm64: Add VGICv3 save/restore API documentation Pavel Fedin (5): KVM: arm/arm64: Move endianness conversion out of vgic_attr_regs_access() KVM: arm/arm64: Refactor vGIC attributes handling code KVM: arm64: Implement vGICv3 distributor and redistributor access from userspace KVM: arm64: Introduce find_reg_by_id() KVM: arm64: Implement vGICv3 CPU interface access Documentation/virtual/kvm/devices/arm-vgic-v3.txt | 116 ++++++++ Documentation/virtual/kvm/devices/arm-vgic.txt | 21 +- arch/arm64/include/uapi/asm/kvm.h | 15 +- arch/arm64/kvm/sys_regs.c | 22 +- arch/arm64/kvm/sys_regs.h | 4 + arch/arm64/mm/mmap.c | 2 +- include/linux/irqchip/arm-gic-v3.h | 19 +- virt/kvm/arm/vgic-v2-emul.c | 124 ++------ virt/kvm/arm/vgic-v3-emul.c | 334 +++++++++++++++++++++- virt/kvm/arm/vgic.c | 57 ++++ virt/kvm/arm/vgic.h | 3 + 11 files changed, 577 insertions(+), 140 deletions(-) create mode 100644 Documentation/virtual/kvm/devices/arm-vgic-v3.txt -- 2.4.4