From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1M1kvv-0001hi-B8 for qemu-devel@nongnu.org; Wed, 06 May 2009 13:29:27 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1M1kvq-0001hF-UD for qemu-devel@nongnu.org; Wed, 06 May 2009 13:29:27 -0400 Received: from [199.232.76.173] (port=55907 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1M1kvq-0001hC-OT for qemu-devel@nongnu.org; Wed, 06 May 2009 13:29:22 -0400 Received: from mail-fx0-f219.google.com ([209.85.220.219]:41476) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1M1kvq-00011Q-F2 for qemu-devel@nongnu.org; Wed, 06 May 2009 13:29:22 -0400 Received: by fxm19 with SMTP id 19so274383fxm.34 for ; Wed, 06 May 2009 10:29:20 -0700 (PDT) From: "Stanislav" References: <1241621382-21577-1-git-send-email-glommer@redhat.com> <1241621382-21577-2-git-send-email-glommer@redhat.com> <1241621382-21577-3-git-send-email-glommer@redhat.com> <4A01AF78.7050102@siemens.com> <20090506155141.GE26401@poweredge.glommer> In-Reply-To: <20090506155141.GE26401@poweredge.glommer> Subject: RE: [Qemu-devel] Re: [PATCH 2/4] move CPUID_APIC flag to where it belongs Date: Wed, 6 May 2009 20:29:23 +0300 Message-ID: <000001c9ce70$3416d3a0$9c447ae0$@com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Language: en-us List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: 'Glauber Costa' , 'Jan Kiszka' Cc: aliguori@us.ibm.com, qemu-devel@nongnu.org If OS boot fine its more luck. The flag indicates presence of local apic, not "if it is supported". For example when lapic is globally disabled (i.e. not present) CPUID flag is cleared off as well. But CPU is still supports lapic, after reset it will be back. Stanislav > Without doing my homework: > What impact will it have on an emulated CPUs without [L]APIC? I'm > thinking of -M isapc e.g. >I tried, and it still boots fine. >The flag just indicates it supports an apic, not that it has one.