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vfio: initialize the virqfd workqueue in VFIO generic code

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Now we have finally completely decoupled virqfd from VFIO_PCI. We can
initialize it from the VFIO generic code, in order to safely use it from
multiple independent VFIO bus drivers.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Baptiste Reynal <b.reynal@virtualopensystems.com>
Reviewed-by: Eric Auger <eric.auger@linaro.org>
Tested-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Antonios Motakis 2015-03-16 14:08:54 -06:00 committed by Alex Williamson
parent 7e992d6927
commit 42ac9bd18d
4 changed files with 12 additions and 11 deletions
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4
drivers/vfio/Makefile
View File

@ -1,4 +1,6 @@
obj-$(CONFIG_VFIO) += vfio.o vfio_core-y := vfio.o virqfd.o
obj-$(CONFIG_VFIO) += vfio_core.o
obj-$(CONFIG_VFIO_IOMMU_TYPE1) += vfio_iommu_type1.o obj-$(CONFIG_VFIO_IOMMU_TYPE1) += vfio_iommu_type1.o
obj-$(CONFIG_VFIO_IOMMU_SPAPR_TCE) += vfio_iommu_spapr_tce.o obj-$(CONFIG_VFIO_IOMMU_SPAPR_TCE) += vfio_iommu_spapr_tce.o
obj-$(CONFIG_VFIO_SPAPR_EEH) += vfio_spapr_eeh.o obj-$(CONFIG_VFIO_SPAPR_EEH) += vfio_spapr_eeh.o

3
drivers/vfio/pci/Makefile
View File

@ -1,5 +1,4 @@
vfio-pci-y := vfio_pci.o vfio_pci_intrs.o vfio_pci_rdwr.o vfio_pci_config.o \ vfio-pci-y := vfio_pci.o vfio_pci_intrs.o vfio_pci_rdwr.o vfio_pci_config.o
../virqfd.o
obj-$(CONFIG_VFIO_PCI) += vfio-pci.o obj-$(CONFIG_VFIO_PCI) += vfio-pci.o

8
drivers/vfio/pci/vfio_pci.c
View File

@ -1030,7 +1030,6 @@ put_devs:
static void __exit vfio_pci_cleanup(void) static void __exit vfio_pci_cleanup(void)
{ {
pci_unregister_driver(&vfio_pci_driver); pci_unregister_driver(&vfio_pci_driver);
vfio_virqfd_exit();
vfio_pci_uninit_perm_bits(); vfio_pci_uninit_perm_bits();
} }
@ -1043,11 +1042,6 @@ static int __init vfio_pci_init(void)
if (ret) if (ret)
return ret; return ret;
/* Start the virqfd cleanup handler */
ret = vfio_virqfd_init();
if (ret)
goto out_virqfd;
/* Register and scan for devices */ /* Register and scan for devices */
ret = pci_register_driver(&vfio_pci_driver); ret = pci_register_driver(&vfio_pci_driver);
if (ret) if (ret)
@ -1056,8 +1050,6 @@ static int __init vfio_pci_init(void)
return 0; return 0;
out_driver: out_driver:
vfio_virqfd_exit();
out_virqfd:
vfio_pci_uninit_perm_bits(); vfio_pci_uninit_perm_bits();
return ret; return ret;
} }

8
drivers/vfio/vfio.c
View File

@ -1553,6 +1553,11 @@ static int __init vfio_init(void)
if (ret) if (ret)
goto err_cdev_add; goto err_cdev_add;
/* Start the virqfd cleanup handler used by some VFIO bus drivers */
ret = vfio_virqfd_init();
if (ret)
goto err_virqfd;
pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
/* /*
@ -1565,6 +1570,8 @@ static int __init vfio_init(void)
return 0; return 0;
err_virqfd:
cdev_del(&vfio.group_cdev);
err_cdev_add: err_cdev_add:
unregister_chrdev_region(vfio.group_devt, MINORMASK); unregister_chrdev_region(vfio.group_devt, MINORMASK);
err_alloc_chrdev: err_alloc_chrdev:
@ -1579,6 +1586,7 @@ static void __exit vfio_cleanup(void)
{ {
WARN_ON(!list_empty(&vfio.group_list)); WARN_ON(!list_empty(&vfio.group_list));
vfio_virqfd_exit();
idr_destroy(&vfio.group_idr); idr_destroy(&vfio.group_idr);
cdev_del(&vfio.group_cdev); cdev_del(&vfio.group_cdev);
unregister_chrdev_region(vfio.group_devt, MINORMASK); unregister_chrdev_region(vfio.group_devt, MINORMASK);