From: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxx> This patchset adds API for saving and restoring of VGICv3 registers to support live migration with new vgic feature. This API definition is as per version of VGICv3 specification http://lists.infradead.org/pipermail/linux-arm-kernel/2016-July/445611.html Compatible live migration QEMU patches will be sent later. The patch 3 & 4 are picked from the Pavel's previous implementation. http://www.spinics.net/lists/kvm/msg122040.html v3 => v4: - Rebased to latest code base - Moved vgic_uaccess() from vgic-mmio-v2.c to vgic-mmio.c - Dropped macro REGISTER_DESC_WITH_BITS_PER_IRQ_SHARED_UACCESS - Dropped LE conversion for userspace access - Introduced vgic_uaccess_write_pending() for ISPENDR write - Change macro KVM_DEV_ARM_VGIC_V3_CPUID_MASK to KVM_DEV_ARM_VGIC_V3_MIDR_MASK - Refactored some code as common code. - Changed handing of ICC_* registers - Allowed ICC_SRE_EL1 read by userspace - Fixed KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_* macros v2 => v3: - Implemented separate API for ISPENDR and ICPENDR to read soft_pending instead of pending for level triggerred interrupts - Implemented ioctl KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO to access line level - Rebased on top of Christoffer's patch set http://www.spinics.net/lists/kvm/msg136840.html NOTE: GICD_STATUSR and GICR_STATUSR are implemented as RAZ/WI. v1 => v2: - The init sequence change patch is no more required. Fixed in patch 2 by using static vgic_io_dev regions structure instead of using dynamic allocation pointer. - Updated commit message of patch 4. - Dropped usage of union to manage 32-bit and 64-bit access in patch 1. Used local variable for 32-bit access. - Updated macro __ARM64_SYS_REG and ARM64_SYS_REG in arch/arm64/include/uapi/asm/kvm.h as per qemu requirements. Vijaya Kumar K (5): arm/arm64: vgic-new: Implement support for userspace access arm/arm64: vgic-new: Add distributor and redistributor access arm/arm64: vgic-new: Introduce find_reg_by_id() arm/arm64: vgic-new: Implement VGICv3 CPU interface access arm/arm64: vgic-new: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl arch/arm64/include/uapi/asm/kvm.h | 13 ++ arch/arm64/kvm/Makefile | 1 + arch/arm64/kvm/sys_regs.c | 22 ++- arch/arm64/kvm/sys_regs.h | 4 + include/linux/irqchip/arm-gic-v3.h | 32 ++++- virt/kvm/arm/vgic/vgic-kvm-device.c | 213 ++++++++++++++++++++++++++++- virt/kvm/arm/vgic/vgic-mmio-v2.c | 57 +------- virt/kvm/arm/vgic/vgic-mmio-v3.c | 143 +++++++++++++++++--- virt/kvm/arm/vgic/vgic-mmio.c | 199 +++++++++++++++++++++++++-- virt/kvm/arm/vgic/vgic-mmio.h | 35 +++++ virt/kvm/arm/vgic/vgic-sys-reg-v3.c | 261 ++++++++++++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic-v3.c | 4 + virt/kvm/arm/vgic/vgic.h | 23 ++++ 13 files changed, 914 insertions(+), 93 deletions(-) create mode 100644 virt/kvm/arm/vgic/vgic-sys-reg-v3.c -- 1.9.1 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
