linux/drivers/xen
Juergen Gross a1078e821b xen: let alloc_xenballooned_pages() fail if not enough memory free
Instead of trying to allocate pages with GFP_USER in
add_ballooned_pages() check the available free memory via
si_mem_available(). GFP_USER is far less limiting memory exhaustion
than the test via si_mem_available().

This will avoid dom0 running out of memory due to excessive foreign
page mappings especially on ARM and on x86 in PVH mode, as those don't
have a pre-ballooned area which can be used for foreign mappings.

As the normal ballooning suffers from the same problem don't balloon
down more than si_mem_available() pages in one iteration. At the same
time limit the default maximum number of retries.

This is part of XSA-300.

Signed-off-by: Juergen Gross <jgross@suse.com>
2019-07-18 06:44:24 +02:00
..
events xen/events: fix binding user event channels to cpus 2019-07-17 08:09:57 +02:00
xen-pciback xen: xen-pciback: fix warning Using plain integer as NULL pointer 2019-04-23 11:15:09 -04:00
xenbus xen: fixes for 5.2-rc3 2019-05-31 10:53:34 -07:00
xenfs treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
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: let alloc_xenballooned_pages() fail if not enough memory free 2019-07-18 06:44:24 +02:00
biomerge.c block: pass page to xen_biovec_phys_mergeable 2019-04-01 12:11:13 -06:00
cpu_hotplug.c xen, cpu_hotplug: Prevent an out of bounds access 2019-03-08 17:58:14 +01:00
dbgp.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
efi.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
evtchn.c xen/events: fix binding user event channels to cpus 2019-07-17 08:09:57 +02:00
features.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
gntalloc.c mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
gntdev-common.h xen/gntdev: Add initial support for dma-buf UAPI 2018-07-26 23:05:14 -04:00
gntdev-dmabuf.c xen/gntdev: Check and release imported dma-bufs on close 2019-02-18 06:50:10 +01:00
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 mm/pgtable: drop pgtable_t variable from pte_fn_t functions 2019-07-12 11:05:46 -07:00
grant-table.c xen: fixes for 4.20-rc2 2018-11-10 08:58:48 -06:00
Kconfig xen: remove tmem driver 2019-07-17 08:09:58 +02:00
Makefile xen: remove tmem driver 2019-07-17 08:09:58 +02:00
manage.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
mcelog.c xen/mcelog: eliminate redundant setting of interface version 2018-08-20 14:46:18 -04:00
mem-reservation.c xen/balloon: add runtime control for scrubbing ballooned out pages 2018-09-14 08:51:10 -04:00
pci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 320 2019-06-05 17:37:05 +02:00
pcpu.c
platform-pci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 320 2019-06-05 17:37:05 +02:00
preempt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 135 2019-05-30 11:25:15 -07:00
privcmd-buf.c xen/privcmd-buf.c: convert to use vm_map_pages_zero() 2019-05-14 09:47:50 -07:00
privcmd.c mm/pgtable: drop pgtable_t variable from pte_fn_t functions 2019-07-12 11:05:46 -07:00
privcmd.h xen: add new hypercall buffer mapping device 2018-06-22 08:26:42 +02:00
pvcalls-back.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
pvcalls-front.c xen: fixes for 5.2-rc3 2019-05-31 10:53:34 -07:00
pvcalls-front.h xen: fix poll misannotation 2018-02-01 10:07:32 -05:00
swiotlb-xen.c Merge branch 'stable/for-linus-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb 2019-06-11 15:38:34 -10:00
sys-hypervisor.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
time.c x86/paravirt: Use a single ops structure 2018-09-03 16:50:35 +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: Replace GPLv2 boilerplate/reference with SPDX - rule 12 2019-05-21 11:28:45 +02:00
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: remove tmem driver 2019-07-17 08:09:58 +02:00
xen-front-pgdir-shbuf.c xen: Introduce shared buffer helpers for page directory... 2018-12-18 12:15:55 -05:00
xen-scsiback.c xen: fixes and features for 5.1-rc1 2019-03-11 17:08:14 -07:00
xen-stub.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12 2019-05-21 11:28:45 +02:00
xlate_mmu.c mm/pgtable: drop pgtable_t variable from pte_fn_t functions 2019-07-12 11:05:46 -07:00