While doing routing code review I noticed that commit 6df8d9aaf3af
("Drivers: hv: balloon: Correctly update onlined page count") introduced
an issue with num_pages_onlined accounting on memory offlining. Deeper look
showed that the accounting was always buggy. This is fixed in PATCH3.
PATCHes 1 and 2 are preparatory cleanups, PATCH4 adds a tracepoint to
post_status so it's now possible to see what's being sent to the host and
where the data comes from.One more thing: currently core MM code forbids offlining blocks with reserved pages in it, I plat to send a patch making it possible. Tested with WS2016 only. Vitaly Kuznetsov (4): hv_balloon: fix printk loglevel hv_balloon: simplify hv_online_page()/hv_page_online_one() hv_balloon: fix bugs in num_pages_onlined accounting hv_balloon: trace post_status drivers/hv/Makefile | 1 + drivers/hv/hv_balloon.c | 121 +++++++++++++++++++++++++++++------------- drivers/hv/hv_trace_balloon.h | 48 +++++++++++++++++ 3 files changed, 132 insertions(+), 38 deletions(-) create mode 100644 drivers/hv/hv_trace_balloon.h -- 2.13.6 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
