linux/drivers/xen
Rahul Singh 58f6259b7a xen/evtchn: Introduce new IOCTL to bind static evtchn
Xen 4.17 supports the creation of static evtchns. To allow user space
application to bind static evtchns introduce new ioctl
"IOCTL_EVTCHN_BIND_STATIC". Existing IOCTL doing more than binding
that’s why we need to introduce the new IOCTL to only bind the static
event channels.

Static evtchns to be available for use during the lifetime of the
guest. When the application exits, __unbind_from_irq() ends up being
called from release() file operations because of that static evtchns
are getting closed. To avoid closing the static event channel, add the
new bool variable "is_static" in "struct irq_info" to mark the event
channel static when creating the event channel to avoid closing the
static evtchn.

Also, take this opportunity to remove the open-coded version of the
evtchn close in drivers/xen/evtchn.c file and use xen_evtchn_close().

Signed-off-by: Rahul Singh <rahul.singh@arm.com>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/ae7329bf1713f83e4aad4f3fa0f316258c40a3e9.1689677042.git.rahul.singh@arm.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2023-07-26 08:42:34 +02:00
..
events xen/evtchn: Introduce new IOCTL to bind static evtchn 2023-07-26 08:42:34 +02:00
xen-pciback xen/pciback: don't call pcistub_device_put() under lock 2023-04-24 07:27:10 +02:00
xenbus xenbus: check xen_domain in xenbus_probe_initcall 2023-07-25 17:36:36 +02:00
xenfs xen: remove unnecessary (void*) conversions 2023-03-16 12:04:00 +01:00
acpi.c
arm-device.c
balloon.c xen: simplify sysctl registration for balloon 2023-04-13 11:49:20 -07:00
biomerge.c
cpu_hotplug.c
dbgp.c
efi.c efi: Apply allowlist to EFI configuration tables when running under Xen 2023-01-23 11:33:24 +01:00
evtchn.c xen/evtchn: Introduce new IOCTL to bind static evtchn 2023-07-26 08:42:34 +02:00
features.c
gntalloc.c mm: replace vma->vm_flags direct modifications with modifier calls 2023-02-09 16:51:39 -08:00
gntdev-common.h xen/gntdev: Accommodate VMA splitting 2022-10-06 10:40:21 +02:00
gntdev-dmabuf.c xen/gntdev: Prepare to dynamic dma-buf locking specification 2022-10-18 01:21:47 +03:00
gntdev-dmabuf.h
gntdev.c mm: replace vma->vm_flags direct modifications with modifier calls 2023-02-09 16:51:39 -08:00
grant-dma-iommu.c xen/grant-dma-iommu: Implement a dummy probe_device() callback 2023-02-13 07:22:08 +01:00
grant-dma-ops.c xen/virtio: Fix NULL deref when a bridge of PCI root bus has no parent 2023-07-04 08:18:21 +02:00
grant-table.c
Kconfig xen: Kconfig: Fix spelling mistake "Maxmium" -> "Maximum" 2022-10-12 08:39:50 +02:00
Makefile
manage.c
mcelog.c
mem-reservation.c
pci.c
pcpu.c ACPI: processor: Fix evaluating _PDC method when running as Xen dom0 2023-03-22 19:36:31 +01:00
platform-pci.c xen: Allow platform PCI interrupt to be shared 2023-02-13 06:53:20 +01:00
privcmd-buf.c mm: replace vma->vm_flags direct modifications with modifier calls 2023-02-09 16:51:39 -08:00
privcmd.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
privcmd.h
pvcalls-back.c workqueue: Ordered workqueue creation cleanups 2023-06-27 16:46:06 -07:00
pvcalls-front.c xen/pvcalls: don't call bind_evtchn_to_irqhandler() under lock 2023-04-24 07:27:10 +02:00
pvcalls-front.h
swiotlb-xen.c
sys-hypervisor.c xen: sysfs: make kobj_type structure constant 2023-02-18 16:50:21 +01:00
time.c
unpopulated-alloc.c
xen-acpi-pad.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
xen-acpi-processor.c
xen-balloon.c
xen-front-pgdir-shbuf.c xen: Replace one-element array with flexible-array member 2023-02-13 09:15:45 +01:00
xen-scsiback.c xen: branch for v6.4-rc1 2023-04-27 17:27:06 -07:00
xlate_mmu.c