Hello, The following series contain some fixes in order to split Xen unpopulated memory handling from the ballooning driver if ZONE_DEVICE is available, so that physical memory regions used to map foreign pages are not tied to memory hotplug.
Fix two patches are bugfixes that IMO should be backported to stable branches, third patch is a revert of a workaround applied to the balloon driver and last patch introduces an interface based on ZONE_DEVICE in order to manage regions to use for foreign mappings. Thanks, Roger. Roger Pau Monne (4): xen/balloon: fix accounting in alloc_xenballooned_pages error path xen/balloon: make the balloon wait interruptible Revert "xen/balloon: Fix crash when ballooning on x86 32 bit PAE" xen: add helpers to allocate unpopulated memory drivers/gpu/drm/xen/xen_drm_front_gem.c | 8 +- drivers/xen/Makefile | 1 + drivers/xen/balloon.c | 30 ++-- drivers/xen/grant-table.c | 4 +- drivers/xen/privcmd.c | 4 +- drivers/xen/unpopulated-alloc.c | 222 ++++++++++++++++++++++++ drivers/xen/xenbus/xenbus_client.c | 6 +- drivers/xen/xlate_mmu.c | 4 +- include/xen/xen.h | 8 + 9 files changed, 256 insertions(+), 31 deletions(-) create mode 100644 drivers/xen/unpopulated-alloc.c -- 2.27.0
