From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: RE: PAE dom0 is broken with the default config Date: Wed, 05 Apr 2006 21:14:01 -0400 Message-ID: <44346B59.8080800@virtualiron.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: nitin.a.kamble@intel.com, Keir.Fraser@cl.cam.ac.uk, m+Ian.Pratt@cl.cam.ac.uk Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org >> I built PAE Xen with the default config, and it is not >> booting. Log is bellow. If I replace the >> linux-defconfig_xen_x86_32 file with the >> linux-defconfig_xen0_x86_32 before building then dom0 is able >> to boot and see more than 4Gig memory. This looks like a dom0 >> kernel config issue. Do you care PAE dom0 for 3.0.2 with the >> default config? Is anybody working on this? > > > This seems pretty unlikely to be a PAE issue -- we do quite extensive > testing. > > Are you sure you have the right initrd? Is the same scsi driver being > used as in the -xen0 case? I suspect there may indeed be some sort of problem with PAE. I have domU RHEL4-U2 SMP 32-bit kernel that dies when it tries to set PAE bit in CR4 --- it can't find translation for the next instruction (and for anything else, for that matter: it keeps then getting GPFs on ignore_int's first instruction). UP version of the same kernel and SMP versions of other kernels, such as 2.6.16, don't have this problem. -boris