Hello, In XenServer we have seen the watchdog occasionally triggering during domain creation if 1GB pages are scrubbed in-place during physmap population. The following series attempt to mitigate this by adding preemption to page scrubbing in populate_physmap(). Also a new limit and command line option to signal the maximum allocation order when doing in-place scrubbing. This is set by default to CONFIG_DOMU_MAX_ORDER.
Thanks, Roger. Roger Pau Monne (3): xen/mm: enforce SCRUB_DEBUG checks for MEMF_no_scrub allocations xen/mm: allow deferred scrub of physmap populate allocated pages xen/mm: limit non-scrubbed allocations to a specific order docs/misc/xen-command-line.pandoc | 9 +++ xen/common/domain.c | 17 +++++ xen/common/memory.c | 105 +++++++++++++++++++++++++++++- xen/common/page_alloc.c | 30 +++++++-- xen/include/xen/mm.h | 1 + xen/include/xen/sched.h | 5 ++ 6 files changed, 161 insertions(+), 6 deletions(-) -- 2.51.0
