Re: [PATCH] ata_piix: reenable MS Virtual PC guests

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On 09/18/2012 11:48 AM, Olaf Hering wrote:
An earlier commit cd006086fa5d91414d8ff9ff2b78fbb593878e3c ("ata_piix:
defer disks to the Hyper-V drivers by default") broke MS Virtual PC
guests. Hyper-V guests and Virtual PC guests have nearly identical DMI
info. As a result the driver does currently ignore the emulated hardware
in Virtual PC guests and defers the handling to hv_blkvsc. Since Virtual
PC does not offer paravirtualized drivers no disks will be found in the
guest.

One difference in the DMI info is the product version. This patch adds a
match for MS Virtual PC 2007 and "unignores" the emulated hardware.

This was reported for openSuSE 12.1 in bugzilla:
https://bugzilla.novell.com/show_bug.cgi?id=737532

Here is a detailed list of DMI info from example guests:

hwinfo --bios:

virtual pc guest:

   System Info: #1
     Manufacturer: "Microsoft Corporation"
     Product: "Virtual Machine"
     Version: "VS2005R2"
     Serial: "3178-9905-1533-4840-9282-0569-59"
     UUID: undefined, but settable
     Wake-up: 0x06 (Power Switch)
   Board Info: #2
     Manufacturer: "Microsoft Corporation"
     Product: "Virtual Machine"
     Version: "5.0"
     Serial: "3178-9905-1533-4840-9282-0569-59"
   Chassis Info: #3
     Manufacturer: "Microsoft Corporation"
     Version: "5.0"
     Serial: "3178-9905-1533-4840-9282-0569-59"
     Asset Tag: "7188-3705-6309-9738-9645-0364-00"
     Type: 0x03 (Desktop)
     Bootup State: 0x03 (Safe)
     Power Supply State: 0x03 (Safe)
     Thermal State: 0x01 (Other)
     Security Status: 0x01 (Other)

win2k8 guest:

   System Info: #1
     Manufacturer: "Microsoft Corporation"
     Product: "Virtual Machine"
     Version: "7.0"
     Serial: "9106-3420-9819-5495-1514-2075-48"
     UUID: undefined, but settable
     Wake-up: 0x06 (Power Switch)
   Board Info: #2
     Manufacturer: "Microsoft Corporation"
     Product: "Virtual Machine"
     Version: "7.0"
     Serial: "9106-3420-9819-5495-1514-2075-48"
   Chassis Info: #3
     Manufacturer: "Microsoft Corporation"
     Version: "7.0"
     Serial: "9106-3420-9819-5495-1514-2075-48"
     Asset Tag: "7076-9522-6699-1042-9501-1785-77"
     Type: 0x03 (Desktop)
     Bootup State: 0x03 (Safe)
     Power Supply State: 0x03 (Safe)
     Thermal State: 0x01 (Other)
     Security Status: 0x01 (Other)

win2k12 guest:

   System Info: #1
     Manufacturer: "Microsoft Corporation"
     Product: "Virtual Machine"
     Version: "7.0"
     Serial: "8179-1954-0187-0085-3868-2270-14"
     UUID: undefined, but settable
     Wake-up: 0x06 (Power Switch)
   Board Info: #2
     Manufacturer: "Microsoft Corporation"
     Product: "Virtual Machine"
     Version: "7.0"
     Serial: "8179-1954-0187-0085-3868-2270-14"
   Chassis Info: #3
     Manufacturer: "Microsoft Corporation"
     Version: "7.0"
     Serial: "8179-1954-0187-0085-3868-2270-14"
     Asset Tag: "8374-0485-4557-6331-0620-5845-25"
     Type: 0x03 (Desktop)
     Bootup State: 0x03 (Safe)
     Power Supply State: 0x03 (Safe)
     Thermal State: 0x01 (Other)
     Security Status: 0x01 (Other)

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>

applied. Apologies for missing this one. It was accidentally shifting into the low-priority pile.



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