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

Functions
void	gem5::BaseKvmCPU::kvmNonMaskableInterrupt ()
	Send a non-maskable interrupt to the guest.

void	gem5::BaseKvmCPU::kvmInterrupt (const struct kvm_interrupt &interrupt)
	Send a normal interrupt to the guest.

void	gem5::KvmVM::createIRQChip ()
	Create an in-kernel interrupt controller.

void	gem5::KvmVM::setIRQLine (uint32_t irq, bool high)
	Set the status of an IRQ line using KVM_IRQ_LINE.

bool	gem5::KvmVM::hasKernelIRQChip () const
	Is in-kernel IRQ chip emulation enabled?

void	gem5::KvmVM::enableKernelIRQChip ()
	Tell the VM and VCPUs to use an in-kernel IRQ chip for interrupt delivery.

Detailed Description

These methods control interrupt delivery to the guest system.

Function Documentation

◆ createIRQChip()

void gem5::KvmVM::createIRQChip ( )

Create an in-kernel interrupt controller.

Note: This functionality depends on Kvm::capIRQChip().

Definition at line 510 of file vm.cc.

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

◆ enableKernelIRQChip()

void gem5::KvmVM::enableKernelIRQChip ( )

inline

Tell the VM and VCPUs to use an in-kernel IRQ chip for interrupt delivery.

Note: This is set automatically if the IRQ chip is created using the KvmVM::createIRQChip() API.

Definition at line 372 of file vm.hh.

References _hasKernelIRQChip.

◆ hasKernelIRQChip()

bool gem5::KvmVM::hasKernelIRQChip ( ) const

inline

Is in-kernel IRQ chip emulation enabled?

Definition at line 363 of file vm.hh.

References _hasKernelIRQChip.

◆ kvmInterrupt()

void gem5::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 834 of file base.cc.

References ioctl(), panic, and stats.

Referenced by gem5::X86KvmCPU::deliverInterrupts().

◆ kvmNonMaskableInterrupt()

void gem5::BaseKvmCPU::kvmNonMaskableInterrupt ( )

protected

Send a non-maskable interrupt to the guest.

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

Definition at line 826 of file base.cc.

References ioctl(), panic, and stats.

Referenced by gem5::X86KvmCPU::deliverInterrupts().

◆ setIRQLine()

void gem5::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().