VPICD_Force_Default

VPICD_Force_Default_Owner

include vpicd.inc

mov eax, IRQNum ; IRQ number

mov ebx, VM ; owner VM handle or 0 for global ownership

VxDcall VPICD_Force_Default_Owner

jc error ; carry flag set if can't set owner

The VPICD_Force_Default_Owner service forces VPICD's default interrupt handler to direct a specified IRQ to a particular virtual machine, or to make the IRQ global so that any virtual machine can receive the interrupt.

Parameters

IRQNum

Specifies the number of the IRQ for which ownership is set.

Specifies the handle identifying the virtual machine to receive ownership. If this parameter is 0, the IRQ is given global ownership and any virtual machine can receive the interrupt.

Return Value

The carry flag is clear if the service set the owner to the specified virtual machine. If the service could not set the owner, such as if the IRQ has been virtualized or the IRQ number is not valid, the carry flag is set.

Uses

Flags