This patchset continues the work I started with: commit 31bc3858ea3ebcc3157b3f5f0e624c5962f5a7a6 Author: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> Date: Tue Mar 15 14:56:48 2016 -0700 memory-hotplug: add automatic onlining policy for the newly added memory Initially I was going to stop there and bring the policy setting logic to userspace. I met two issues on this way: 1) It is possible to have memory hotplugged at boot (e.g. with QEMU). These blocks stay offlined if we turn the onlining policy on by userspace. 2) My attempt to bring this policy setting to systemd failed, systemd maintainers suggest to change the default in kernel or ... to use tmpfiles.d to alter the policy (which looks like a hack to me): https://github.com/systemd/systemd/pull/2938 Here I suggest to add a config option to set the default value for the policy and a kernel command line parameter to make the override. Vitaly Kuznetsov (2): memory_hotplug: introduce CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE memory_hotplug: introduce memhp_default_state= command line parameter Documentation/kernel-parameters.txt | 8 ++++++++ Documentation/memory-hotplug.txt | 9 +++++---- mm/Kconfig | 16 ++++++++++++++++ mm/memory_hotplug.c | 15 +++++++++++++++ 4 files changed, 44 insertions(+), 4 deletions(-) -- 2.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html