lkml.org 
[lkml]   [2019]   [Aug]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subject[PATCH 0/9] arm64: Stolen time support
    Date
    This series add support for paravirtualized time for arm64 guests and
    KVM hosts following the specification in Arm's document DEN 0057A:

    https://developer.arm.com/docs/den0057/a

    It implements support for stolen time, allowing the guest to
    identify time when it is forcibly not executing.

    It doesn't implement support for Live Physical Time (LPT) as there are
    some concerns about the overheads and approach in the above
    specification, and I expect an updated version of the specification to
    be released soon with just the stolen time parts.

    I previously posted a series including LPT (as well as stolen time):
    https://lore.kernel.org/kvmarm/20181212150226.38051-1-steven.price@arm.com/

    Patches 2, 5, 7 and 8 are cleanup patches and could be taken separately.

    Christoffer Dall (1):
    KVM: arm/arm64: Factor out hypercall handling from PSCI code

    Steven Price (8):
    KVM: arm64: Document PV-time interface
    KVM: arm64: Implement PV_FEATURES call
    KVM: arm64: Support stolen time reporting via shared structure
    KVM: Allow kvm_device_ops to be const
    KVM: arm64: Provide a PV_TIME device to user space
    arm/arm64: Provide a wrapper for SMCCC 1.1 calls
    arm/arm64: Make use of the SMCCC 1.1 wrapper
    arm64: Retrieve stolen time as paravirtualized guest

    Documentation/virtual/kvm/arm/pvtime.txt | 107 +++++++++++++
    arch/arm/kvm/Makefile | 2 +-
    arch/arm/kvm/handle_exit.c | 2 +-
    arch/arm/mm/proc-v7-bugs.c | 13 +-
    arch/arm64/include/asm/kvm_host.h | 13 +-
    arch/arm64/include/asm/kvm_mmu.h | 2 +
    arch/arm64/include/asm/pvclock-abi.h | 20 +++
    arch/arm64/include/uapi/asm/kvm.h | 6 +
    arch/arm64/kernel/Makefile | 1 +
    arch/arm64/kernel/cpu_errata.c | 80 ++++------
    arch/arm64/kernel/kvm.c | 155 ++++++++++++++++++
    arch/arm64/kvm/Kconfig | 1 +
    arch/arm64/kvm/Makefile | 2 +
    arch/arm64/kvm/handle_exit.c | 4 +-
    include/kvm/arm_hypercalls.h | 44 ++++++
    include/kvm/arm_psci.h | 2 +-
    include/linux/arm-smccc.h | 58 +++++++
    include/linux/cpuhotplug.h | 1 +
    include/linux/kvm_host.h | 4 +-
    include/linux/kvm_types.h | 2 +
    include/uapi/linux/kvm.h | 2 +
    virt/kvm/arm/arm.c | 18 +++
    virt/kvm/arm/hypercalls.c | 138 ++++++++++++++++
    virt/kvm/arm/mmu.c | 44 ++++++
    virt/kvm/arm/psci.c | 84 +---------
    virt/kvm/arm/pvtime.c | 190 +++++++++++++++++++++++
    virt/kvm/kvm_main.c | 6 +-
    27 files changed, 848 insertions(+), 153 deletions(-)
    create mode 100644 Documentation/virtual/kvm/arm/pvtime.txt
    create mode 100644 arch/arm64/include/asm/pvclock-abi.h
    create mode 100644 arch/arm64/kernel/kvm.c
    create mode 100644 include/kvm/arm_hypercalls.h
    create mode 100644 virt/kvm/arm/hypercalls.c
    create mode 100644 virt/kvm/arm/pvtime.c

    --
    2.20.1

    \
     
     \ /
      Last update: 2019-08-02 16:50    [W:5.611 / U:0.020 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site