Juergen Gross 4d3fe31bd9 xen/events: add a proper barrier to 2-level uevent unmasking ... A follow-up patch will require certain write to happen before an event channel is unmasked. While the memory barrier is not strictly necessary for all the callers, the main one will need it. In order to avoid an extra memory barrier when using fifo event channels, mandate evtchn_unmask() to provide write ordering. The 2-level event handling unmask operation is missing an appropriate barrier, so add it. Fifo event channels are fine in this regard due to using sync_cmpxchg(). This is part of XSA-332. Cc: stable@vger.kernel.org Suggested-by: Julien Grall <julien@xen.org> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Julien Grall <jgrall@amazon.com> Reviewed-by: Wei Liu <wl@xen.org>		2020-10-20 10:21:56 +02:00
..
events	xen/events: add a proper barrier to 2-level uevent unmasking	2020-10-20 10:21:56 +02:00
xen-pciback	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
xenbus	xen: branch for v5.9-rc4	2020-09-06 09:59:27 -07:00
xenfs	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
acpi.c
arm-device.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
balloon.c	xen: branch for v5.9-rc4	2020-09-06 09:59:27 -07:00
biomerge.c	block: pass page to xen_biovec_phys_mergeable	2019-04-01 12:11:13 -06:00
cpu_hotplug.c	xen/cpuhotplug: Fix initial CPU offlining for PV(H) guests	2020-05-21 13:01:45 -05:00
dbgp.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
efi.c	xen/efi: have a common runtime setup function	2019-10-02 10:31:07 -04:00
evtchn.c	xen: Use evtchn_type_t as a type for event channels	2020-04-07 12:12:54 +02:00
features.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
gntalloc.c
gntdev-common.h	xen: Use evtchn_type_t as a type for event channels	2020-04-07 12:12:54 +02:00
gntdev-dmabuf.c	xen/gntdev: Fix dmabuf import with non-zero sgt offset	2020-08-13 12:50:22 +02:00
gntdev-dmabuf.h	xen/gntdev: Do not destroy context while dma-bufs are in use	2019-02-18 06:50:03 +01:00
gntdev.c	xen/gntdev.c: Convert get_user_pages*() to pin_user_pages*()	2020-10-04 18:41:33 -05:00
grant-table.c	xen: add helpers to allocate unpopulated memory	2020-09-04 10:00:01 +02:00
Kconfig	xen: branch for v5.9-rc4	2020-09-06 09:59:27 -07:00
Makefile	xen: branch for v5.9-rc4	2020-09-06 09:59:27 -07:00
manage.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
mcelog.c	xen/mcelog: add PPIN to record when available	2019-11-14 10:01:57 +01:00
mem-reservation.c
pci.c	xen/pci: reserve MCFG areas earlier	2019-09-12 15:02:55 -04:00
pcpu.c
platform-pci.c	xen-platform: Constify dev_pm_ops	2020-05-21 13:00:39 -05:00
privcmd-buf.c	xen/privcmd-buf.c: convert to use vm_map_pages_zero()	2019-05-14 09:47:50 -07:00
privcmd.c	xen: branch for v5.9-rc4	2020-09-06 09:59:27 -07:00
privcmd.h
pvcalls-back.c	xen/pvcalls: Make pvcalls_back_global static	2020-05-21 13:06:42 -05:00
pvcalls-front.c	xen: remove redundant initialization of variable ret	2020-10-04 18:41:33 -05:00
pvcalls-front.h
swiotlb-xen.c	xen/arm: introduce phys/dma translations in xen_dma_sync_for_*	2020-08-04 07:53:52 +02:00
sys-hypervisor.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
time.c	READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses	2020-04-16 12:28:07 +01:00
unpopulated-alloc.c	xen: add helpers to allocate unpopulated memory	2020-09-04 10:00:01 +02:00
xen-acpi-cpuhotplug.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12	2019-05-21 11:28:45 +02:00
xen-acpi-memhotplug.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
xen-acpi-pad.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
xen-acpi-processor.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
xen-balloon.c	xen/balloon: Support xend-based toolstack take two	2020-01-22 08:58:16 -06:00
xen-front-pgdir-shbuf.c	xen: Introduce shared buffer helpers for page directory...	2018-12-18 12:15:55 -05:00
xen-scsiback.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
xen-stub.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12	2019-05-21 11:28:45 +02:00
xlate_mmu.c	xen: add helpers to allocate unpopulated memory	2020-09-04 10:00:01 +02:00