Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750946AbVJ2LPp (ORCPT ); Sat, 29 Oct 2005 07:15:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750967AbVJ2LPp (ORCPT ); Sat, 29 Oct 2005 07:15:45 -0400 Received: from coyote.holtmann.net ([217.160.111.169]:49544 "EHLO mail.holtmann.net") by vger.kernel.org with ESMTP id S1750946AbVJ2LPo (ORCPT ); Sat, 29 Oct 2005 07:15:44 -0400 Subject: Re: 4GB memory and Intel Dual-Core system From: Marcel Holtmann To: Dave Jones Cc: Lukas Hejtmanek , linux-kernel@vger.kernel.org In-Reply-To: <20051029033229.GA13257@redhat.com> References: <20051028205833.GM2533@mail.muni.cz> <20051029033229.GA13257@redhat.com> Content-Type: text/plain Date: Sat, 29 Oct 2005 13:15:24 +0200 Message-Id: <1130584524.5360.1.camel@blade> Mime-Version: 1.0 X-Mailer: Evolution 2.4.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1464 Lines: 48 Hi Dave, > > I have system with 2 Pentium 4 Xeon EM64T processors using 4GB of RAM. > > > > Kernel is 2.6.13.4 compiled for x86_64 architecture. > > > > Btw, /proc/cpuinfo reports, that only 36 bits are availalable for physical > > memory. Not 40. > > That should be fixed in 2.6.14 is this only true for the Xeon series or should it be 40 bits for every EM64T capable CPU from Intel? I ask, because mine still shows 36 bits with the latest vanilla from today. processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) D CPU 2.80GHz stepping : 4 cpu MHz : 2800.229 cache size : 1024 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall lm constant_tsc pni monitor ds_cpl cid cx16 xtpr bogomips : 5609.23 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 48 bits virtual power management: Regards Marcel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/