From mboxrd@z Thu Jan 1 00:00:00 1970 From: paolo pedaletti Subject: Re: kvm-82 doesn't boot 64bit (?) [cpu0 unhandled wrmsr] Date: Fri, 16 Jan 2009 15:49:04 +0100 Message-ID: <49709E60.8080507@gmail.com> References: <49696473.2080000@gmail.com> <20090111085153.GA27301@amit-x200.pnq.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: KVM To: Amit Shah Return-path: Received: from mailgw2.si.unimib.it ([149.132.2.30]:42215 "EHLO mailgw2.si.unimib.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755091AbZAPOtJ (ORCPT ); Fri, 16 Jan 2009 09:49:09 -0500 In-Reply-To: <20090111085153.GA27301@amit-x200.pnq.redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Ciao Amit, >> 1) with -cpu qemu64 I obtain in the guest: >> cat /proc/cpuinfo >> vendor_id: GenuineIntel >> but it doesn't seem a 64 bit cpu (?) > > Check for the 'lm' flag in cpuinfo output. with -cpu qemu64: cat /proc/cpuinfo | grep flags flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse6 clflush mmx fxsr sse sse2 syscall nx lm up pni http://www.linuxquestions.org/questions/linux-general-1/proccpuinfo-flag-lm-358563/?s=58094402abd82d488b3daf02e520f6bf ok, it's 64 bit > Have you used 'core2duo' in a previous version without problems? no, it's the first time, the hardware is new > I could reproduce this with 32-bit and 64-bit guests. It works fine with > -no-kvm. I looked at this briefly; it's a problem in cpuid function 4 > which has the Intel cache identification bits. We need updated info there. can I provide you this information? How? > Just for the refernce, kvm_stat shows this and CPU usage goes beyond 95%: > > $ ./kvm_stat -1 > efer_reload 27 0 > exits 2652516 591716 > fpu_reload 276172 0 > halt_exits 55 0 the meaning of the two columns is .... ? thank you. -- Paolo Pedaletti