WSL2-Linux-Kernel/include/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
..
arm xen/virtio: Optimize the setup of "xen-grant-dma" devices 2022-12-05 12:59:49 +01:00
interface x86/PVH: obtain VGA console info in Dom0 2023-03-14 15:20:51 +01:00
acpi.h xen: Remove support for PV ACPI cpu/memory hotplug 2021-04-23 09:31:50 +02:00
balloon.h xen/balloon: Bring alloc(free)_xenballooned_pages helpers back 2022-01-06 09:53:35 +01:00
events.h xen/evtchn: Introduce new IOCTL to bind static evtchn 2023-07-26 08:42:34 +02:00
features.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
grant_table.h xen/grants: support allocating consecutive grants 2022-06-06 08:54:35 +02:00
hvc-console.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hvm.h x86/xen: Add support for HVMOP_set_evtchn_upcall_vector 2022-08-12 11:28:21 +02:00
mem-reservation.h xen/balloon: add runtime control for scrubbing ballooned out pages 2018-09-14 08:51:10 -04:00
page.h swiotlb-xen: remove XEN_PFN_PHYS 2020-08-04 07:50:43 +02:00
pci.h xen-pciback: allow compiling on other archs than x86 2021-11-02 08:03:43 -05:00
platform_pci.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
swiotlb-xen.h swiotlb-xen: fix DMA_ATTR_NO_KERNEL_MAPPING on arm 2022-05-11 19:48:32 +02:00
xen-front-pgdir-shbuf.h xen: Introduce shared buffer helpers for page directory... 2018-12-18 12:15:55 -05:00
xen-ops.h xen/virtio: Optimize the setup of "xen-grant-dma" devices 2022-12-05 12:59:49 +01:00
xen.h x86: xen: add missing prototypes 2023-06-26 07:47:11 +02:00
xenbus.h driver core: make struct bus_type.uevent() take a const * 2023-01-27 13:45:52 +01:00
xenbus_dev.h xen: xenbus_dev.h: delete incorrect file name 2022-02-03 08:16:32 +01:00