linux/drivers/xen
Juergen Gross 25da4618af xen/events: don't unmask an event channel when an eoi is pending
An event channel should be kept masked when an eoi is pending for it.
When being migrated to another cpu it might be unmasked, though.

In order to avoid this keep three different flags for each event channel
to be able to distinguish "normal" masking/unmasking from eoi related
masking/unmasking and temporary masking. The event channel should only
be able to generate an interrupt if all flags are cleared.

Cc: stable@vger.kernel.org
Fixes: 54c9de8989 ("xen/events: add a new "late EOI" evtchn framework")
Reported-by: Julien Grall <julien@xen.org>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Tested-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Link: https://lore.kernel.org/r/20210306161833.4552-3-jgross@suse.com

[boris -- corrected Fixed tag format]

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2021-03-10 16:37:29 -06:00
..
events xen/events: don't unmask an event channel when an eoi is pending 2021-03-10 16:37:29 -06:00
xen-pciback xen/events: link interdomain events to associated xenbus device 2021-02-11 14:47:00 -08:00
xenbus xen/events: add per-xenbus device event statistics and settings 2021-02-23 10:07:11 -06:00
xenfs
acpi.c
arm-device.c
balloon.c xen/balloon: try to merge system ram resources 2020-10-16 11:11:18 -07:00
biomerge.c
cpu_hotplug.c
dbgp.c
efi.c
evtchn.c xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices 2021-02-23 10:07:52 -06:00
features.c
gntalloc.c
gntdev-common.h
gntdev-dmabuf.c xen: gntdev: fix common struct sg_table related issues 2020-09-10 08:18:35 +02:00
gntdev-dmabuf.h
gntdev.c Xen/gntdev: correct error checking in gntdev_map_grant_pages() 2021-02-15 08:52:27 +01:00
grant-table.c xen: don't use page->lru for ZONE_DEVICE memory 2020-12-09 10:31:41 +01:00
Kconfig xen: branch for v5.9-rc4 2020-09-06 09:59:27 -07:00
Makefile xen: Remove Xen PVH/PVHVM dependency on PCI 2020-12-16 07:55:05 +01:00
manage.c xen/manage: Fix fall-through warnings for Clang 2020-12-16 07:58:44 +01:00
mcelog.c
mem-reservation.c
pci.c
pcpu.c
platform-pci.c xen: Set platform PCI device INTX affinity to CPU0 2021-01-13 16:12:03 +01:00
privcmd-buf.c
privcmd.c xen/privcmd: allow fetching resource sizes 2021-01-13 12:31:17 +01:00
privcmd.h
pvcalls-back.c xen/events: link interdomain events to associated xenbus device 2021-02-11 14:47:00 -08:00
pvcalls-front.c xen: remove redundant initialization of variable ret 2020-10-04 18:41:33 -05:00
pvcalls-front.h
swiotlb-xen.c swiotlb: remove the tbl_dma_addr argument to swiotlb_tbl_map_single 2020-11-02 10:10:39 -05:00
sys-hypervisor.c
time.c
unpopulated-alloc.c xen/unpopulated-alloc: consolidate pgmap manipulation 2020-12-15 12:13:40 -08:00
xen-acpi-cpuhotplug.c
xen-acpi-memhotplug.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xen-acpi-pad.c
xen-acpi-processor.c xen: Replace lkml.org links with lore 2021-02-23 10:08:07 -06:00
xen-balloon.c
xen-front-pgdir-shbuf.c xen-front-pgdir-shbuf: don't record wrong grant handle upon error 2021-02-23 12:35:43 -06:00
xen-scsiback.c xen: branch for v5.12-rc1 2021-02-21 13:06:08 -08:00
xen-stub.c
xlate_mmu.c xen: add helpers to allocate unpopulated memory 2020-09-04 10:00:01 +02:00