From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1H3yfy-0007Hd-R5 for qemu-devel@nongnu.org; Mon, 08 Jan 2007 12:52:51 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1H3yft-0007DG-Ss for qemu-devel@nongnu.org; Mon, 08 Jan 2007 12:52:50 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1H3yft-0007Ct-8j for qemu-devel@nongnu.org; Mon, 08 Jan 2007 12:52:45 -0500 Received: from [194.25.134.83] (helo=mailout07.sul.t-online.com) by monty-python.gnu.org with esmtp (Exim 4.52) id 1H3yfs-0001U2-0L for qemu-devel@nongnu.org; Mon, 08 Jan 2007 12:52:44 -0500 Message-ID: <45A284D6.2080805@t-online.de> Date: Mon, 08 Jan 2007 18:52:22 +0100 From: Werner Dittmann MIME-Version: 1.0 Subject: Re: [Qemu-devel] problem with 64/64 guest running grub References: <20070108135326.GA21227@silverwood.ncultra.org> In-Reply-To: <20070108135326.GA21227@silverwood.ncultra.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: ncmike@ncultra.org, qemu-devel@nongnu.org Same happen to Suse 64 host/64 guest system (Suse 10.1). A 32-bit guest system install quite well. My trace shows the same symptom: Qemu seems to loop in a very tight loop. Sometimes (using infoe registers rapidly) I can even see that it seems to switch to 32bit mode inside the guest kernel maybe because a 32 bit application is running? No kqemu is involved when running the 64bit guest, started with -no-kqemu. As mike wrote: any hint how I can help to tackle the problem is appreciated. Regards, Werner Mike Day wrote: > I'm having a problem with qemu (cvs and 0.8.2) running on a 64 bit > athlon x2 with a 64 bit guest. When installing edgy in a new 64-bit > guest, the guest always freezes when installing grub on the boot > partition. > This only happens with a 64/64 system. I can run the guest in qemu (as > opposed to > qemu-system-x86_64) and use grub to install itself, but if I try to do > the same thing with qemu-system-x86_64 it hangs. > After generating a trace file and stepping through the hang in gdb it > looks like the guest is getting overwhhelmed with interrupts. It > reminds me of a situation where some device driver is forgetting to > issue an eoi and the interrupt line is remaining on, which means that > the guest can never make any progress advancing the instruction > pointer. > > I've placed a compressed log file at > http://www.ncultra.org/qemu.log.tgz > > I'd be happy to spend some more time runnign this down - if anyone has > any suggestions on how I should proceed I'd be grateful. > Mike > >