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Message-Id: <1420541335-17190-20-git-send-email-a.motakis@virtualopensystems.com>
Date: Tue, 6 Jan 2015 11:48:54 +0100
From: Antonios Motakis <a.motakis@...tualopensystems.com>
To: kvmarm@...ts.cs.columbia.edu, iommu@...ts.linux-foundation.org,
alex.williamson@...hat.com
Cc: will.deacon@....com, tech@...tualopensystems.com,
christoffer.dall@...aro.org, eric.auger@...aro.org,
kim.phillips@...escale.com, marc.zyngier@....com,
Antonios Motakis <a.motakis@...tualopensystems.com>,
Gavin Shan <gwshan@...ux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Alexey Kardashevskiy <aik@...abs.ru>,
kvm@...r.kernel.org (open list:VFIO DRIVER),
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v11 19/20] vfio: initialize the virqfd workqueue in VFIO generic code
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@...tualopensystems.com>
---
drivers/vfio/Makefile | 4 +++-
drivers/vfio/pci/Makefile | 3 +--
drivers/vfio/pci/vfio_pci.c | 8 --------
drivers/vfio/vfio.c | 8 ++++++++
4 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/drivers/vfio/Makefile b/drivers/vfio/Makefile
index dadf0ca..d798b09 100644
--- a/drivers/vfio/Makefile
+++ b/drivers/vfio/Makefile
@@ -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_SPAPR_TCE) += vfio_iommu_spapr_tce.o
obj-$(CONFIG_VFIO_SPAPR_EEH) += vfio_spapr_eeh.o
diff --git a/drivers/vfio/pci/Makefile b/drivers/vfio/pci/Makefile
index c7c8644..1310792 100644
--- a/drivers/vfio/pci/Makefile
+++ b/drivers/vfio/pci/Makefile
@@ -1,5 +1,4 @@
-vfio-pci-y := vfio_pci.o vfio_pci_intrs.o vfio_pci_rdwr.o vfio_pci_config.o \
- ../virqfd.o
+vfio-pci-y := vfio_pci.o vfio_pci_intrs.o vfio_pci_rdwr.o vfio_pci_config.o
obj-$(CONFIG_VFIO_PCI) += vfio-pci.o
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index fc4308c..8d156d7 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -1012,7 +1012,6 @@ put_devs:
static void __exit vfio_pci_cleanup(void)
{
pci_unregister_driver(&vfio_pci_driver);
- vfio_virqfd_exit();
vfio_pci_uninit_perm_bits();
}
@@ -1025,11 +1024,6 @@ static int __init vfio_pci_init(void)
if (ret)
return ret;
- /* Start the virqfd cleanup handler */
- ret = vfio_virqfd_init();
- if (ret)
- goto out_virqfd;
-
/* Register and scan for devices */
ret = pci_register_driver(&vfio_pci_driver);
if (ret)
@@ -1038,8 +1032,6 @@ static int __init vfio_pci_init(void)
return 0;
out_driver:
- vfio_virqfd_exit();
-out_virqfd:
vfio_pci_uninit_perm_bits();
return ret;
}
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index f018d8d..8e84471 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1464,6 +1464,11 @@ static int __init vfio_init(void)
if (ret)
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");
/*
@@ -1476,6 +1481,8 @@ static int __init vfio_init(void)
return 0;
+err_virqfd:
+ cdev_del(&vfio.group_cdev);
err_cdev_add:
unregister_chrdev_region(vfio.group_devt, MINORMASK);
err_alloc_chrdev:
@@ -1490,6 +1497,7 @@ static void __exit vfio_cleanup(void)
{
WARN_ON(!list_empty(&vfio.group_list));
+ vfio_virqfd_exit();
idr_destroy(&vfio.group_idr);
cdev_del(&vfio.group_cdev);
unregister_chrdev_region(vfio.group_devt, MINORMASK);
--
2.1.4
--
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