Date: Wed, 27 Apr 2005 08:33:22 -0700 From: "David O'Brien" <obrien@freebsd.org> To: Diomidis Spinellis <dds@aueb.gr> Cc: freebsd-amd64@freebsd.org Subject: Re: Kernel panics running 5.4-RC3 and 5.4-STABLE on an AMD-64 with 8GB RAM Message-ID: <20050427153322.GA26145@dragon.NUXI.org> In-Reply-To: <426E7971.7060904@aueb.gr> References: <426D1F5A.20307@aueb.gr> <20050426165836.GA45067@dragon.NUXI.org> <426E7971.7060904@aueb.gr>
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On Tue, Apr 26, 2005 at 09:25:05PM +0400, Diomidis Spinellis wrote: > David O'Brien wrote: > >On Mon, Apr 25, 2005 at 08:48:26PM +0400, Diomidis Spinellis wrote: > >>I am trying to make a Tyan S4882 (K8QSPro) motherboard with two 2.2GHz > >>Opterons and 8GB RAM to work with FreeBSD. Both the 5.4-RC3 > >>installation boot disk, and Thursday's 5.4-STABLE code panic. The > >>system works fine with 4GB of RAM (it can run make buildworld), either > >>by physically removing the memory, or by adding "set hw.physmem = 4GB" > >>in boot/loader.rc. > > > >What BIOS version are you using, and what are your BIOS settings for > >memory related things? Do you have "Hardware memory hole" or "Software > >memory hole" enabled? Can use the full 8GB fine if you use "Failsafe > >defaults"? If you use "Optimial defaults"? > > I am using BIOS version 1.0.2. Unfortunately, I've been unable to flash > a newer BIOS; the procedure fails with an error indicating that the BIOS > size did not mathc the image's size. This happens with all BIOS > versions, including the one we are currently running. I'm waiting a > reply from Tyan on this. > > These are the memory related BIOS settings. > > Advanced configuration: > - 4GB memory adjust is set to auto (it can also be set to manual, in > which case the hole size can be adjusted from 64MB - 2GB). I would disabled this until you can upgrade to the latest BIOS. > - Speculative TLB reload enabled Disable this and see if that helps any. > In PCI configuration: > - IO MMU enabled , size 256MB The IOMMU setting doesn't affect FreeBSD, so you could disable it if you like. -- -- David (obrien@FreeBSD.org)
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