Re: [Xen-devel] [PATCH 1/4] Introduce a new hotplug state: Force eject.

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Tue, 15 May 2012, Anthony PERARD wrote:
> This hotplug state will be used to remove a device without the guest
> cooperation.
> 
> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> ---
>  hw/acpi_piix4.c |    5 +++++
>  hw/pci.h        |    1 +
>  2 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c
> index 585da4e..dfd5a9d 100644
> --- a/hw/acpi_piix4.c
> +++ b/hw/acpi_piix4.c
> @@ -587,6 +587,11 @@ static int piix4_device_hotplug(DeviceState *qdev, 
> PCIDevice *dev,
>          return 0;
>      }
>  
> +    if (state == PCI_FORCE_EJECT) {
> +        acpi_piix_eject_slot(s, 1 << slot);
> +        return 0;
> +    }
> +
>      if (state == PCI_HOTPLUG_ENABLED) {
>          enable_device(s, slot);
>      } else {
> diff --git a/hw/pci.h b/hw/pci.h
> index 8d0aa49..3b61e43 100644
> --- a/hw/pci.h
> +++ b/hw/pci.h
> @@ -273,6 +273,7 @@ typedef enum {
>      PCI_HOTPLUG_DISABLED,
>      PCI_HOTPLUG_ENABLED,
>      PCI_COLDPLUG_ENABLED,
> +    PCI_FORCE_EJECT,
>  } PCIHotplugState;

Given that it is supposed to be a state rather than an action, it should
be called PCI_FORCE_DISABLED or something like that.

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