Re: [PATCH v5 0/3] xen/balloon: fixes for memory hotplug

[Jürgen Groß <jgross@xxxxxxxx>]

On 01.09.20 10:33, Roger Pau Monne wrote:
> Hello,
>
> The following series contain some fixes in order to split Xen
> unpopulated memory handling from the ballooning driver using the
> ZONE_DEVICE functionality, so that physical memory regions used to map
> foreign pages are not tied to memory hotplug.
>
> Note this is currently only available for x86 due to Arm using an
> identity map for dom0 p2m and thus needing special handling.
>
> Thanks, Roger.
>
> Roger Pau Monne (3):
>    xen/balloon: add header guard
>    memremap: rename MEMORY_DEVICE_DEVDAX to MEMORY_DEVICE_GENERIC
>    xen: add helpers to allocate unpopulated memory
>
>   drivers/dax/device.c                    |   2 +-
>   drivers/gpu/drm/xen/xen_drm_front_gem.c |   9 +-
>   drivers/xen/Kconfig                     |  11 ++
>   drivers/xen/Makefile                    |   1 +
>   drivers/xen/balloon.c                   |   4 +-
>   drivers/xen/grant-table.c               |   4 +-
>   drivers/xen/privcmd.c                   |   4 +-
>   drivers/xen/unpopulated-alloc.c         | 185 ++++++++++++++++++++++++
>   drivers/xen/xenbus/xenbus_client.c      |   6 +-
>   drivers/xen/xlate_mmu.c                 |   4 +-
>   include/linux/memremap.h                |   9 +-
>   include/xen/balloon.h                   |   4 +
>   include/xen/xen.h                       |   9 ++
>   mm/memremap.c                           |   2 +-
>   14 files changed, 232 insertions(+), 22 deletions(-)
>   create mode 100644 drivers/xen/unpopulated-alloc.c
Applied the series to xen/tip.git for-linus-5.9


Juergen