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alistair23-linux/drivers/xen
Juergen Gross 564312e088 xen/events: don't use chip_data for legacy IRQs
commit 0891fb39ba upstream.

Since commit c330fb1ddc ("XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.")
Xen is using the chip_data pointer for storing IRQ specific data. When
running as a HVM domain this can result in problems for legacy IRQs, as
those might use chip_data for their own purposes.

Use a local array for this purpose in case of legacy IRQs, avoiding the
double use.

Cc: stable@vger.kernel.org
Fixes: c330fb1ddc ("XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.")
Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Stefan Bader <stefan.bader@canonical.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20200930091614.13660-1-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-17 10:11:24 +02:00
..
events xen/events: don't use chip_data for legacy IRQs 2020-10-17 10:11:24 +02:00
xen-pciback
xenbus xen/xenbus: Fix granting of vmalloc'd memory 2020-09-09 19:12:22 +02:00
xenfs
Kconfig
Makefile
acpi.c
arm-device.c
balloon.c xen/balloon: make the balloon wait interruptible 2020-08-19 08:16:29 +02:00
biomerge.c
cpu_hotplug.c
dbgp.c
efi.c
evtchn.c
features.c
gntalloc.c
gntdev-common.h
gntdev-dmabuf.c xen/gntdev: Fix dmabuf import with non-zero sgt offset 2020-08-19 08:16:29 +02:00
gntdev-dmabuf.h
gntdev.c
grant-table.c
manage.c
mcelog.c
mem-reservation.c
pci.c
pcpu.c
platform-pci.c
preempt.c xen: don't reschedule in preemption off sections 2020-08-26 10:41:07 +02:00
privcmd-buf.c
privcmd.c
privcmd.h
pvcalls-back.c xen/pvcalls-back: test for errors when calling backend_connect() 2020-06-17 16:40:38 +02:00
pvcalls-front.c
pvcalls-front.h
swiotlb-xen.c swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses 2020-08-26 10:40:56 +02:00
sys-hypervisor.c
time.c
xen-acpi-cpuhotplug.c
xen-acpi-memhotplug.c
xen-acpi-pad.c
xen-acpi-processor.c
xen-balloon.c xen/balloon: Support xend-based toolstack take two 2020-02-11 04:35:36 -08:00
xen-front-pgdir-shbuf.c
xen-scsiback.c
xen-stub.c
xlate_mmu.c