[Libvirt-cim] [PATCH 1/5] RASD/schema: Add properties for device address representation

[John Ferlan]

On 10/14/2013 11:29 AM, Viktor Mihajlovski wrote:
> Certain device types are only identifiable uniquely via a device
> address from the guest's perspective. Adding or removing devices
> has the potential to change the address of other unrelated devices
> and impact the guest's operation. Therefore it is less desirable
> to rely on implicit device address allocation but rather to use
> persistent device addresses.
> 
> Depending on the device's bus type (PCI, SCSI, USB, CCW ...) the
> address specification format can vary, see also the libvirt
> domain XML documentation. To account for the various formats
> device addresses are specified with two array properties in the
> respective RASD classes: AddressProperties and AddressValues.
> The former contains a list of address property names and the latter
> the values.
> 
> E.g., a PCI address is specified by the properties domain, bus,
> slot and function. Therefore, for a PCI device RASD we could
> have:
> 
> AddressProperties = ['type', 'domain','bus', 'slot', 'function']
> AddressValues = ['pci', '0x0000', '0x00', '0x01', '0x2']
> 
> resulting in a libvirt address element:
> 
> <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
>  function='0x2'/>
> 
> Initially, we support only disk and network devices for KVM guests.
> 
> Signed-off-by: Viktor Mihajlovski <mihajlov at linux.vnet.ibm.com>
> ---
>  schema/ResourceAllocationSettingData.mof |   12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 

ACK

John