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    Subject[PATCH v12 7/8] allower the user to disable pv event support
    Date
    Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
    Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
    ---
    hw/pc_piix.c | 8 +++++++-
    qemu-config.c | 4 ++++
    qemu-options.hx | 3 ++-
    3 files changed, 13 insertions(+), 2 deletions(-)

    diff --git a/hw/pc_piix.c b/hw/pc_piix.c
    index 8380702..bf31b96 100644
    --- a/hw/pc_piix.c
    +++ b/hw/pc_piix.c
    @@ -150,6 +150,8 @@ static void pc_init1(MemoryRegion *system_memory,
    MemoryRegion *pci_memory;
    MemoryRegion *rom_memory;
    void *fw_cfg = NULL;
    + QemuOptsList *list = qemu_find_opts("machine");
    + bool enable_pv_event = false;

    pc_cpus_init(cpu_model);

    @@ -288,7 +290,11 @@ static void pc_init1(MemoryRegion *system_memory,
    pc_pci_device_init(pci_bus);
    }

    - if (kvm_enabled()) {
    + if (list && !QTAILQ_EMPTY(&list->head)) {
    + enable_pv_event = qemu_opt_get_bool(QTAILQ_FIRST(&list->head),
    + "enable_pv_event", false);
    + }
    + if (kvm_enabled() && enable_pv_event) {
    kvm_pv_event_init(isa_bus);
    }
    }
    diff --git a/qemu-config.c b/qemu-config.c
    index 10d1ba4..6682276 100644
    --- a/qemu-config.c
    +++ b/qemu-config.c
    @@ -627,6 +627,10 @@ static QemuOptsList qemu_machine_opts = {
    .name = "usb",
    .type = QEMU_OPT_BOOL,
    .help = "Set on/off to enable/disable usb",
    + }, {
    + .name = "enable_pv_event",
    + .type = QEMU_OPT_BOOL,
    + .help = "handle pv event"
    },
    { /* End of list */ }
    },
    diff --git a/qemu-options.hx b/qemu-options.hx
    index dd86bfe..44c7760 100644
    --- a/qemu-options.hx
    +++ b/qemu-options.hx
    @@ -35,7 +35,8 @@ DEF("machine", HAS_ARG, QEMU_OPTION_machine, \
    " kernel_irqchip=on|off controls accelerated irqchip support\n"
    " kvm_shadow_mem=size of KVM shadow MMU\n"
    " dump-guest-core=on|off include guest memory in a core dump (default=on)\n"
    - " mem-merge=on|off controls memory merge support (default: on)\n",
    + " mem-merge=on|off controls memory merge support (default: on)\n"
    + " enable_pv_event=on|off controls pv event support (default: off)\n",
    QEMU_ARCH_ALL)
    STEXI
    @item -machine [type=]@var{name}[,prop=@var{value}[,...]]
    --
    1.8.0.1.240.ge8a1f5a


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