On 30 January 2015 at 14:48, Timur Tabi <timur@xxxxxxxxxxxxxx> wrote: > Catalin Marinas wrote: >> >> Anyway, rather than a "I-created-an-empty-dtb" property, I would >> actually say something like "dtb-contains-no-hardware-description". > > > Why do we need a property for this? Wouldn't the absence of a hardware > description be the best way to see if the dtb contains no hardware > description? It's like putting a sign on an empty bookshelf that says, > "there are no books here." > So what constitutes a 'hardware description'? A /cpu node? A memory node? I don't think there is a mandated minimal set of nodes, even if booting without cpu and memory nodes doesn't get you very far. So those should go hand in hand: if we are going to implement logic that decides a DTB is considered empty if it has no /cpu node, we should update the boot protocol to mandate the presence of a /cpu node for DT boot, and not change the rules every couple of months if someone's use case requires it. -- Ard. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
