On Tue, Jan 15, 2013 at 12:30:19PM +0000, Liu, Jinsong wrote:
> >From 110b4ef3b8ebefeaf68832dd8ef8aa916a782e89 Mon Sep 17 00:00:00 2001
> From: Liu Jinsong <[email protected]>
> Date: Mon, 14 Jan 2013 15:19:30 +0800
> Subject: [PATCH 1/3] Xen stub driver for CPU hotplug
>
> Add Xen stub driver for CPU hotplug, early occupy to block native,
> will be replaced later by real Xen processor driver module.
>
> Signed-off-by: Liu Jinsong <[email protected]>
> ---
> drivers/xen/xen-stub.c | 34 ++++++++++++++++++++++++++++++++--
> include/xen/acpi.h | 6 ++++++
> 2 files changed, 38 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/xen/xen-stub.c b/drivers/xen/xen-stub.c
> index 01a49e3..681e9cc 100644
> --- a/drivers/xen/xen-stub.c
> +++ b/drivers/xen/xen-stub.c
> @@ -28,12 +28,13 @@
> #include <acpi/acpi_drivers.h>
> #include <xen/acpi.h>
>
> +
> +#ifdef CONFIG_ACPI
> +
> /*--------------------------------------------
> stub driver for Xen memory hotplug
> --------------------------------------------*/
>
> -#ifdef CONFIG_ACPI
> -
> static const struct acpi_device_id memory_device_ids[] = {
> {ACPI_MEMORY_DEVICE_HID, 0},
> {"", 0},
> @@ -57,4 +58,33 @@ static int __init xen_stub_memory_device_init(void)
> }
> subsys_initcall(xen_stub_memory_device_init);
>
> +
> +/*--------------------------------------------
> + stub driver for Xen cpu hotplug
> +--------------------------------------------*/
> +
> +static const struct acpi_device_id processor_device_ids[] = {
> + {ACPI_PROCESSOR_OBJECT_HID, 0},
> + {ACPI_PROCESSOR_DEVICE_HID, 0},
> + {"", 0},
> +};
> +
> +struct acpi_driver xen_stub_processor_driver = {
> + /* same name as native processor driver to block native loaded */
> + .name = "processor",
> + .class = ACPI_PROCESSOR_CLASS,
> + .ids = processor_device_ids,
> +};
> +EXPORT_SYMBOL_GPL(xen_stub_processor_driver);
Could you make this be
xen_stub_processor_deinit() instead?
> +
> +static int __init xen_stub_processor_init(void)
> +{
> + if (!xen_initial_domain())
> + return -ENODEV;
> +
> + /* just reserve space for Xen, block native driver loaded */
> + return acpi_bus_register_driver(&xen_stub_processor_driver);
> +}
> +subsys_initcall(xen_stub_processor_init);
> +
> #endif
> diff --git a/include/xen/acpi.h b/include/xen/acpi.h
> index 7366e58..1c99eb5 100644
> --- a/include/xen/acpi.h
> +++ b/include/xen/acpi.h
> @@ -46,6 +46,12 @@
>
> extern struct acpi_driver xen_stub_memory_device_driver;
>
> +#define ACPI_PROCESSOR_CLASS "processor"
> +#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
> +#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
> +
> +extern struct acpi_driver xen_stub_processor_driver;
> +
> int xen_acpi_notify_hypervisor_state(u8 sleep_state,
> u32 pm1a_cnt, u32 pm1b_cnd);
>
> --
> 1.7.1
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