From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1GQ2UR-000859-FB for qemu-devel@nongnu.org; Wed, 20 Sep 2006 09:51:51 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1GQ2UP-00084n-UH for qemu-devel@nongnu.org; Wed, 20 Sep 2006 09:51:51 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GQ2UP-00084k-Px for qemu-devel@nongnu.org; Wed, 20 Sep 2006 09:51:49 -0400 Received: from [65.74.133.4] (helo=mail.codesourcery.com) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA:32) (Exim 4.52) id 1GQ2Xh-0003b2-P1 for qemu-devel@nongnu.org; Wed, 20 Sep 2006 09:55:14 -0400 From: Paul Brook Subject: Re: [Qemu-devel] qemu-system-sparc uses all host cpu while target system is idle Date: Wed, 20 Sep 2006 14:45:02 +0100 References: <45110AAA.7080508@aurel32.net> In-Reply-To: <45110AAA.7080508@aurel32.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200609201445.03988.paul@codesourcery.com> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org On Wednesday 20 September 2006 10:32, Aurelien Jarno wrote: > Hi all, > > I have successully installed a Debian Etch for Sparc under qemu (CVS > version), and successfully updated it to unstable. Everything seems to > work correctly, the performances are ok, but I have remarked than > qemu-system-sparc is using all the CPU on the host system, while the > sparc target system is idle. Maybe the problem is in the sparc kernel? I > am using the one from unstable, ie a 2.6.17 kernel. CPU suspend is not implemented for sparc guests. Unlike most other targets, suspending the CPU is controlled by the system chipset, not by an instruction on the CPU. See slavio_misc.c Paul