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dbe5283605
linux/drivers/xen
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Jan Beulich dbe5283605 Xen/gntdev: correct dev_bus_addr handling in gntdev_map_grant_pages() 
We may not skip setting the field in the unmap structure when
GNTMAP_device_map is in use - such an unmap would fail to release the
respective resources (a page ref in the hypervisor). Otoh the field
doesn't need setting at all when GNTMAP_device_map is not in use.

To record the value for unmapping, we also better don't use our local
p2m: In particular after a subsequent change it may not have got updated
for all the batch elements. Instead it can simply be taken from the
respective map's results.

We can additionally avoid playing this game altogether for the kernel
part of the mappings in (x86) PV mode.

This is part of XSA-361.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: stable@vger.kernel.org
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Juergen Gross <jgross@suse.com>
2021-02-15 08:51:07 +01:00
..
events xen: branch for v5.11-rc4 2021-01-15 10:52:00 -08:00
xen-pciback xen/xenbus: Add 'will_handle' callback support in xenbus_watch_path() 2020-12-14 10:04:18 +01:00
xenbus arm/xen: Don't probe xenbus as part of an early initcall 2021-02-11 07:49:37 +01:00
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/balloon: try to merge system ram resources 2020-10-16 11:11:18 -07:00
biomerge.c
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/events: Remove disfunct affinity spreading 2020-12-15 16:19:35 +01:00
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 common struct sg_table related issues 2020-09-10 08:18:35 +02:00
gntdev-dmabuf.h
gntdev.c Xen/gntdev: correct dev_bus_addr handling in gntdev_map_grant_pages() 2021-02-15 08:51:07 +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 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: Set platform PCI device INTX affinity to CPU0 2021-01-13 16:12:03 +01:00
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/privcmd: allow fetching resource sizes 2021-01-13 12:31:17 +01:00
privcmd.h
pvcalls-back.c xen/pvcallsback: use lateeoi irq binding 2020-10-20 10:22:07 +02:00
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 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/unpopulated-alloc: consolidate pgmap manipulation 2020-12-15 12:13:40 -08:00
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-scsiback.c xen: add helpers for caching grant mapping pages 2020-12-09 10:31:37 +01:00
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