Re: [PATCH] of: specify initrd location using 64-bit

On 09/12/2012 02:58 PM, Sebastian Andrzej Siewior wrote:

On 09/12/2012 08:02 PM, Cyril Chemparathy wrote:

quoted

quoted

quoted

-void __init early_init_dt_setup_initrd_arch(unsigned long start,
unsigned long end)
+void __init early_init_dt_setup_initrd_arch(u64 start, u64 end)

Why not phys_addr_t?

The rest of the memory specific bits of the device-tree code use u64 for
addresses, and I kept it the same for consistency.

Geert is right here. If it is a physical address, it should be
phys_addr_t.

While generally true, for the DT specific code I think it should be a
fixed u64. The size of the address is defined by the FDT, not the
kernel. It is very likely we could have a FDT that specifies addresses
in 64-bit values, but then we boot a kernel is compiled for !LPAE.
phys_addr_t is currently sized based on LPAE setting.

Also, this is how the memory and reserved nodes are handled currently,
so we should be consistent.

Rob