RE: [PATCH 3/4] ACPI/MRRM: Add "node" symlink to /sys/devices/system/memory/rangeX

[Luck, Tony]

>> +	if (node)
>> +		ret = sysfs_create_link(&entry->dev.kobj, &node->dev.kobj, "node");
>
> What is going to remove this symlink if the memory goes away?  Or do
> these never get removed?

There's currently no method for runtime changes to these memory ranges. They
are described by a static ACPI table.  I need to poke the folks that came up
with this to ask how memory hotplug will be handled (since CXL seems to be
making that fashionable again).

> symlinks in sysfs created like this always worry me.  What is going to
> use it?

<hand waves>User space tools that want to understand what the "per-region"
monitoring and control features are actually operating on.</hand waves>

-Tony