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 Documentation/virtual/kvm/devices/arm-vgic-v3.txt The patch 3 & 4 are picked from the Pavel's previous implementation. http://www.spinics.net/lists/kvm/msg122040.html NOTE: Only compilation tested for AArch32. No hardware to test. v9 => v10: - Dropped support for AArch32 mode. - Fixed line level update - Updated documentation - Moved vgic-sys-reg-v3.c to arch/arm64/kvm/ and added vgic-v3-coproc.c to arch/arm/kvm for AArch32 - Fixed nits v8 => v9: - Rebased to kvmarm/next branch - Introduce support for save and restore of CPU interface registers for AArch32 mode (9,10 and 11 patches). Only compilation tested. - Fixed vmcr.ctlr format - Updated error code for invalid CPU REG value in Documentation - Updated commit messages and added comments required - Queued IRQ when irq_line is set. - Compatibility check on ICC_CTLR_EL1.SEIS and A3V v7 => v8: - Rebased to 4.9-rc3 - Fixed wrong parameter to VGIC_TO_MPIDR v6 => v7: - Rename all patches heading from vgic-new to vgic - Moved caching of priority and ID bits from vgic global struct to vgic_cpu struct. v5 => v6: - Collated all register definitions to single patch (4) - Introduce macro to convert userspace MPIDR format to MPIDR reg format - Check on ICC_CTLR_EL1.CBPR value is made while accessing ICC_BPR1_EL1 - Cached ich_vtr_el2 and guests priority and ID bits - Check on number of priority and ID bits when ICC_CTRL_EL1 write is made - Check is made on SRE bit for ICC_SRE_EL1 write v4 => v5: - ICC_CTLR_EL1 access is updated to reflect HW values - Updated ICC reg access mask and shift macros - Introduced patch 4 for VMCR changes - Other minor fixes. 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 (8): arm/arm64: vgic: Implement support for userspace access arm/arm64: vgic: Add distributor and redistributor access arm/arm64: vgic: Introduce find_reg_by_id() irqchip/gic-v3: Add missing system register definitions arm/arm64: vgic: Introduce VENG0 and VENG1 fields to vmcr struct arm/arm64: vgic: Implement VGICv3 CPU interface access arm/arm64: vgic: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl arm/arm64: Documentation: Update arm-vgic-v3.txt Documentation/virtual/kvm/devices/arm-vgic-v3.txt | 9 +- arch/arm/include/uapi/asm/kvm.h | 13 + arch/arm/kvm/Makefile | 4 +- arch/arm/kvm/vgic-v3-coproc.c | 35 +++ arch/arm64/include/uapi/asm/kvm.h | 13 + arch/arm64/kvm/Makefile | 3 +- arch/arm64/kvm/sys_regs.c | 22 +- arch/arm64/kvm/sys_regs.h | 4 + arch/arm64/kvm/vgic-sys-reg-v3.c | 338 ++++++++++++++++++++++ include/kvm/arm_vgic.h | 9 + include/linux/irqchip/arm-gic-v3.h | 45 ++- virt/kvm/arm/vgic/vgic-kvm-device.c | 215 +++++++++++++- virt/kvm/arm/vgic/vgic-mmio-v2.c | 57 +--- virt/kvm/arm/vgic/vgic-mmio-v3.c | 204 +++++++++++-- virt/kvm/arm/vgic/vgic-mmio.c | 162 ++++++++++- virt/kvm/arm/vgic/vgic-mmio.h | 28 ++ virt/kvm/arm/vgic/vgic-v3.c | 28 +- virt/kvm/arm/vgic/vgic.h | 60 +++- 18 files changed, 1144 insertions(+), 105 deletions(-) create mode 100644 arch/arm/kvm/vgic-v3-coproc.c create mode 100644 arch/arm64/kvm/vgic-sys-reg-v3.c -- 1.9.1 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
