On Thu, Apr 04, 2019 at 12:08:49PM -0700, Dan Williams wrote: > Memory that has been tagged EFI_SPECIAL_PURPOSE, and has performance > properties described by the ACPI HMAT is expected to have an application > specific consumer. > > Those consumers may want 100% of the memory capacity to be reserved from > any usage by the kernel. By default, with this enabling, a platform > device is created to represent this differentiated resource. This sounds more than weird. Since when did we let the firmware decide who can use the memory?