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    Subject[PATCH V2 03/10] Drivers: hv: vmbus: remove hv_synic_free_cpu() call from hv_synic_cleanup()
    Date
    From: Vitaly Kuznetsov <vkuznets@redhat.com>

    We already have hv_synic_free() which frees all per-cpu pages for all
    CPUs, let's remove the hv_synic_free_cpu() call from hv_synic_cleanup()
    so it will be possible to do separate cleanup (writing to MSRs) and final
    freeing. This is going to be used to assist kexec.

    Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
    Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
    ---
    drivers/hv/hv.c | 2 --
    drivers/hv/vmbus_drv.c | 1 +
    2 files changed, 1 insertions(+), 2 deletions(-)

    diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
    index d3943bc..5b87042 100644
    --- a/drivers/hv/hv.c
    +++ b/drivers/hv/hv.c
    @@ -530,6 +530,4 @@ void hv_synic_cleanup(void *arg)
    rdmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
    sctrl.enable = 0;
    wrmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
    -
    - hv_synic_free_cpu(cpu);
    }
    diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
    index 6de65fb..58a9344 100644
    --- a/drivers/hv/vmbus_drv.c
    +++ b/drivers/hv/vmbus_drv.c
    @@ -1089,6 +1089,7 @@ static void __exit vmbus_exit(void)
    tasklet_kill(hv_context.event_dpc[cpu]);
    smp_call_function_single(cpu, hv_synic_cleanup, NULL, 1);
    }
    + hv_synic_free();
    acpi_bus_unregister_driver(&vmbus_acpi_driver);
    if (vmbus_proto_version > VERSION_WIN7)
    cpu_hotplug_enable();
    --
    1.7.4.1


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