motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-01 06:43:53 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

vfio: refactor out IRQ signalling setup

Browse source 
This makes for a slightly more readable vfio_msix_vector_do_use()
implementation, and we will rely on this shortly.

Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250520150419.2172078-5-john.levon@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
John Levon 2025-05-20 16:03:53 +01:00 • committed by Cédric Le Goater
parent 1539945946
commit a483ad5347
1 changed files with 20 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

35
hw/vfio/pci.c
View file

@ -511,6 +511,25 @@ static void vfio_update_kvm_msi_virq(VFIOMSIVector *vector, MSIMessage msg,
kvm_irqchip_commit_routes(kvm_state);
}
static void set_irq_signalling(VFIODevice *vbasedev, VFIOMSIVector *vector,
unsigned int nr)
{
Error *err = NULL;
int32_t fd;
if (vector->virq >= 0) {
fd = event_notifier_get_fd(&vector->kvm_interrupt);
} else {
fd = event_notifier_get_fd(&vector->interrupt);
}
if (!vfio_device_irq_set_signaling(vbasedev, VFIO_PCI_MSIX_IRQ_INDEX, nr,
VFIO_IRQ_SET_ACTION_TRIGGER,
fd, &err)) {
error_reportf_err(err, VFIO_MSG_PREFIX, vbasedev->name);
}
}
static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr,
MSIMessage *msg, IOHandler *handler)
{
@ -583,21 +602,7 @@ static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr,
strerror(-ret));
}
} else {
Error *err = NULL;
int32_t fd;
if (vector->virq >= 0) {
fd = event_notifier_get_fd(&vector->kvm_interrupt);
} else {
fd = event_notifier_get_fd(&vector->interrupt);
}
if (!vfio_device_irq_set_signaling(&vdev->vbasedev,
VFIO_PCI_MSIX_IRQ_INDEX, nr,
VFIO_IRQ_SET_ACTION_TRIGGER, fd,
&err)) {
error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
}
set_irq_signalling(&vdev->vbasedev, vector, nr);
}
}