KVM Interrupt handling.

These methods control interrupt delivery to the guest system. More...

Functions
void	BaseKvmCPU::kvmNonMaskableInterrupt ()
	Send a non-maskable interrupt to the guest. More...
void	BaseKvmCPU::kvmInterrupt (const struct kvm_interrupt &interrupt)
	Send a normal interrupt to the guest. More...
void	KvmVM::createIRQChip ()
	Create an in-kernel interrupt controller. More...
void	KvmVM::setIRQLine (uint32_t irq, bool high)
	Set the status of an IRQ line using KVM_IRQ_LINE. More...
bool	KvmVM::hasKernelIRQChip () const
	Is in-kernel IRQ chip emulation enabled? More...

Detailed Description

These methods control interrupt delivery to the guest system.

Function Documentation

void KvmVM::createIRQChip

(

)

Create an in-kernel interrupt controller.

Note

This functionality depends on Kvm::capIRQChip().

Definition at line 487 of file vm.cc.

References KvmVM::_hasKernelIRQChip, KvmVM::ioctl(), panic, and warn.

bool KvmVM::hasKernelIRQChip ( ) const

inline

Is in-kernel IRQ chip emulation enabled?

Definition at line 353 of file vm.hh.

References KvmVM::_hasKernelIRQChip.

void BaseKvmCPU::kvmInterrupt ( const struct kvm_interrupt &  interrupt )

protected

Send a normal interrupt to the guest.

Note

Make sure that ready_for_interrupt_injection in kvm_run is set prior to calling this function. If not, an interrupt window must be requested by setting request_interrupt_window in kvm_run to 1 and restarting the guest.

Parameters

interrupt

Structure describing the interrupt to send

Definition at line 829 of file base.cc.

References BaseKvmCPU::ioctl(), BaseKvmCPU::numInterrupts, and panic.

Referenced by X86KvmCPU::deliverInterrupts().

void BaseKvmCPU::kvmNonMaskableInterrupt ( )

protected

Send a non-maskable interrupt to the guest.

Note

The presence of this call depends on Kvm::capUserNMI().

Definition at line 821 of file base.cc.

References BaseKvmCPU::ioctl(), BaseKvmCPU::numInterrupts, and panic.

Referenced by X86KvmCPU::deliverInterrupts().

void KvmVM::setIRQLine	(	uint32_t	irq,
		bool	high
	)

Set the status of an IRQ line using KVM_IRQ_LINE.

Note

This ioctl is usually only used if the interrupt controller is emulated by the kernel (i.e., after calling createIRQChip()). Some architectures (e.g., ARM) use it instead of BaseKvmCPU::kvmInterrupt().

Parameters

irq	Interrupt number
high	Line level (true for high, false for low)

Definition at line 502 of file vm.cc.

References KvmVM::ioctl(), ArmISA::irq, and panic.

Referenced by BaseArmKvmCPU::kvmRun(), ArmKvmCPU::kvmRun(), and KvmKernelGicV2::setIntState().