[Xen-devel] Using VGA PT for nVidia, causes weird "*** int 15h function AX=5f14, BX=078f not yet supported!" messages to appear in qemu log file

[Tom Rotenberg <tom.rotenberg@xxxxxxxxx>]

Hi,

When i'm doing nVidia PT, (using all the steps described earlier in
this mailing list), i start to see starnge messages in the qemu log
file, which says:
"
...
*** int 15h function AX=5f14, BX=078f not yet supported!
...
"

Here is the end of my qemu log file:
"
....
ACPI PCI hotplug: read addr=0x1140, val=0x00.
ACPI PCI hotplug: read addr=0x1140, val=0x00.
ACPI PCI hotplug: read addr=0x1141, val=0x00.
ACPI PCI hotplug: read addr=0x1141, val=0x00.
*** int 15h function AX=5f14, BX=078f not yet supported!
*** int 15h function AX=5f14, BX=078f not yet supported!
*** int 15h function AX=5f14, BX=078f not yet supported!
*** int 15h function AX=5f14, BX=078f not yet supported!
*** int 15h function AX=5f14, BX=078f not yet supported!
*** int 15h function AX=5f14, BX=078f not yet supported!
ACPI PCI hotplug: read addr=0x10c6, val=0x0f.
ACPI PCI hotplug: read addr=0x10c6, val=0x0f.
ACPI PCI hotplug: read addr=0x10c6, val=0x0f.
ACPI PCI hotplug: read addr=0x10c6, val=0x0f.
ACPI PCI hotplug: read addr=0x10c6, val=0x0f.
ACPI PCI hotplug: read addr=0x10c6, val=0x0f.
*** int 15h function AX=5f14, BX=078f not yet supported!
*** int 15h function AX=5f14, BX=078f not yet supported!
"

When i search the problem, i found similar messages in the qemu log
file, of other people which used the nVidia PT. For example:
http://lists.xensource.com/archives/html/xen-devel/2009-09/msg00285.html
http://article.gmane.org/gmane.comp.emulators.xen.devel/70827

Does anyone know why these messages appear, and what is the meaning of
them? Does it signal that there is a bug somewhere in the code?

Tom

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