linux-stable/drivers/xen
Juergen Gross 9a69878dfa xen/balloon: Support xend-based toolstack take two
commit eda4eabf86 upstream.

Commit 3aa6c19d2f ("xen/balloon: Support xend-based toolstack")
tried to fix a regression with running on rather ancient Xen versions.
Unfortunately the fix was based on the assumption that xend would
just use another Xenstore node, but in reality only some downstream
versions of xend are doing that. The upstream xend does not write
that Xenstore node at all, so the problem must be fixed in another
way.

The easiest way to achieve that is to fall back to the behavior
before commit 96edd61dcf ("xen/balloon: don't online new memory
initially") in case the static memory maximum can't be read.

This is achieved by setting static_max to the current number of
memory pages known by the system resulting in target_diff becoming
zero.

Fixes: 3aa6c19d2f ("xen/balloon: Support xend-based toolstack")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: <stable@vger.kernel.org> # 4.13
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:34:08 -08:00
..
events
xen-pciback xen/pciback: Check dev_data before using it 2019-12-05 09:20:26 +01:00
xenbus xen/xenbus: fix self-deadlock after killing user process 2019-10-11 18:21:06 +02:00
xenfs
acpi.c
arm-device.c
balloon.c xen/balloon: fix ballooned page accounting without hotplug enabled 2020-01-09 10:18:58 +01:00
biomerge.c
cpu_hotplug.c xen, cpu_hotplug: Prevent an out of bounds access 2020-01-27 14:50:31 +01:00
dbgp.c
efi.c
evtchn.c
fallback.c
features.c
gntalloc.c
gntdev-common.h
gntdev-dmabuf.c
gntdev-dmabuf.h
gntdev.c
grant-table.c
Kconfig xen/gntdev: Use select for DMA_SHARED_BUFFER 2019-12-31 16:35:50 +01:00
Makefile
manage.c
mcelog.c
mem-reservation.c
pci.c xen/pci: reserve MCFG areas earlier 2019-10-11 18:21:13 +02:00
pcpu.c
platform-pci.c
preempt.c
privcmd-buf.c
privcmd.c
privcmd.h
pvcalls-back.c net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept_head 2020-01-27 14:51:18 +01:00
pvcalls-front.c pvcalls-front: don't return error when the ring is full 2019-12-17 20:35:32 +01:00
pvcalls-front.h
swiotlb-xen.c xen/swiotlb: fix condition for calling xen_destroy_contiguous_region() 2019-08-06 19:06:55 +02:00
sys-hypervisor.c
time.c
tmem.c
xen-acpi-cpuhotplug.c
xen-acpi-memhotplug.c
xen-acpi-pad.c
xen-acpi-processor.c
xen-balloon.c xen/balloon: Support xend-based toolstack take two 2020-02-11 04:34:08 -08:00
xen-scsiback.c
xen-selfballoon.c
xen-stub.c
xlate_mmu.c