linux/drivers/xen/events
Juergen Gross 0891fb39ba xen/events: don't use chip_data for legacy IRQs
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>
2020-10-01 14:45:26 +02:00
..
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
events_2l.c xen: Use evtchn_type_t as a type for event channels 2020-04-07 12:12:54 +02:00
events_base.c xen/events: don't use chip_data for legacy IRQs 2020-10-01 14:45:26 +02:00
events_fifo.c xen: Use evtchn_type_t as a type for event channels 2020-04-07 12:12:54 +02:00
events_internal.h xen: Use evtchn_type_t as a type for event channels 2020-04-07 12:12:54 +02:00