From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60034) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZbXUA-00043g-OP for qemu-devel@nongnu.org; Mon, 14 Sep 2015 13:24:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZbXU5-0002ry-JT for qemu-devel@nongnu.org; Mon, 14 Sep 2015 13:24:10 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34247) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZbXU5-0002rn-EO for qemu-devel@nongnu.org; Mon, 14 Sep 2015 13:24:05 -0400 References: <1441999509-26881-1-git-send-email-ehabkost@redhat.com> <55F32C53.8050606@twiddle.net> <20150911195859.GN3574@thinpad.lan.raisama.net> <55F49331.5030104@redhat.com> <55F70232.4090105@twiddle.net> From: Paolo Bonzini Message-ID: <55F702AD.4030408@redhat.com> Date: Mon, 14 Sep 2015 19:23:57 +0200 MIME-Version: 1.0 In-Reply-To: <55F70232.4090105@twiddle.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 0/4] target-i386: Don't try to enable unsupported TCG features by default List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Richard Henderson , Eduardo Habkost Cc: Igor Mammedov , qemu-devel@nongnu.org, =?UTF-8?Q?Andreas_F=c3=a4rber?= On 14/09/2015 19:21, Richard Henderson wrote: >>> About implementing DE in TCG: I really don't think it is easier, but if >>> >> somebody wants to implement it, it would be welcome. >> > >> > Actually I agree that it's easier, and even a partial implementation >> > (e.g. no I/O port breakpoints) would be nice to have because recent >> > Windows IIRC requires DE. > Isn't I/O port breakpoints the only thing we're missing from DE? I was thinking of the CR4 bit, but it looks like we don't raise #GP at all on writes to unknown CR0 or CR4 bits. Paolo