On 15/09/16 06:06, Reza Arbab wrote: > Respect the standard dt "status" property when scanning memory nodes in > early_init_dt_scan_memory(), so that if the property is present and not > "okay", no memory will be added. > > The use case at hand is accelerator or device memory, which may be > unusable until post-boot initialization of the memory link. Such a node > can be described in the dt as any other, given its status is "disabled". > Per the device tree specification, > > "disabled" > Indicates that the device is not presently operational, but it > might become operational in the future (for example, something > is not plugged in, or switched off). > > Once such memory is made operational, it can then be hotplugged. > > Signed-off-by: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx> Makes sense, so basically a /memory@ with missing status or status = "okay" are added, others are skipped. No memblocks corresponding to those nodes are created either. Balbir Singh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>