linux-kernel - [PATCH v5 0/3] xen/balloon: fixes for memory hotplug

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Date:   Tue, 1 Sep 2020 10:33:23 +0200
From:   Roger Pau Monne <roger.pau@...rix.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Roger Pau Monne <roger.pau@...rix.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        "Stefano Stabellini" <sstabellini@...nel.org>,
        <xen-devel@...ts.xenproject.org>
Subject: [PATCH v5 0/3] xen/balloon: fixes for memory hotplug

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

-- 
2.28.0