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Subject[GIT PULL] xen: fixes for 4.19-rc4

Please git pull the following tag:

git:// for-linus-4.19c-rc4-tag

xen: fixes for 4.19-rc4

It contains some minor cleanups and fixes and:

- a new knob for controlling scrubbing of pages returned by the Xen
balloon driver to the Xen hypervisor to address a boot performance
issue seen in large guests booted pre-ballooned

- a fix of a regression in the gntdev driver which made it impossible
to use fully virtualized guests (HVM guests) with a 4.19 based dom0

- a fix in Xen cpu hotplug functionality which could be triggered by
wrong admin commands (setting number of active vcpus to 0)

One further note: the patches have all been under test for several days
in another branch. This branch has been rebased in order to avoid merge



.../ABI/stable/sysfs-devices-system-xen_memory | 9 ++++++++
Documentation/admin-guide/kernel-parameters.txt | 6 +++++
drivers/xen/Kconfig | 10 ++++++---
drivers/xen/cpu_hotplug.c | 15 +++++++------
drivers/xen/events/events_base.c | 2 +-
drivers/xen/gntdev.c | 26 +++++++++++++---------
drivers/xen/manage.c | 6 +++--
drivers/xen/mem-reservation.c | 4 ++++
drivers/xen/xen-balloon.c | 3 +++
include/xen/mem-reservation.h | 7 +++---
10 files changed, 61 insertions(+), 27 deletions(-)

Josh Abraham (1):
xen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage

Marek Marczykowski-Górecki (1):
xen/balloon: add runtime control for scrubbing ballooned out pages

Michal Hocko (1):
xen/gntdev: fix up blockable calls to mn_invl_range_start

Olaf Hering (1):
xen: avoid crash in disable_hotplug_cpu

Vitaly Kuznetsov (1):
xen/manage: don't complain about an empty value in control/sysrq node

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