From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: Physical Memory map holes in PPC From: Benjamin Herrenschmidt To: Tameen Khan Cc: linuxppc-dev list In-Reply-To: <00b001c428eb$2d8ae740$273147ab@amer.cisco.com> References: <00b001c428eb$2d8ae740$273147ab@amer.cisco.com> Content-Type: text/plain Message-Id: <1082701889.6442.2.camel@gaston> Mime-Version: 1.0 Date: Fri, 23 Apr 2004 16:31:30 +1000 Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: > I have looked through the boot memory allocator code for PPC and I dont find > a similar memory map. They use a phys_avail array for boot memory allocation > which is initialized to a single region from PPC_MEMSTART to total_memory. > >From this it appears that there are no "holes" in physical memory map for > PPC. Most ppc32 don't, though it's fairly dependant on a given board. ppc64 do have holes, though at this point, it's not simple to get to them, the data structure representing the physical memory map beeing marked __init... Ben. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/