From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54352) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y8qux-00006Y-GK for qemu-devel@nongnu.org; Wed, 07 Jan 2015 08:45:00 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Y8qus-0008Am-Dz for qemu-devel@nongnu.org; Wed, 07 Jan 2015 08:44:59 -0500 Received: from mx1.redhat.com ([209.132.183.28]:59083) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y8qus-0008Ae-4V for qemu-devel@nongnu.org; Wed, 07 Jan 2015 08:44:54 -0500 Message-ID: <54AD0BDE.7020200@redhat.com> Date: Wed, 07 Jan 2015 11:35:10 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <3154DC97-3B67-4DBF-BD02-C64E4A9591E3@gmail.com> <77FFD738-1433-4B15-8522-C1EA965B774B@gmail.com> <122C8E58-48F5-4A54-B0AF-A826492D73B6@gmail.com> <4A37A1CE-EE81-4408-A13E-8A4C7C91D498@gmail.com> <54AC45AE.5020804@redhat.com> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Subject: Re: [Qemu-devel] Gives user ability to select endian format for video display - fixes Mac OS X guest color issue. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: G 3 Cc: Peter Maydell , qemu-devel qemu-devel On 06/01/2015 22:33, G 3 wrote: > > 00:01.0 VGA compatible controller: Technical Corp. Device 1111 (rev > 02) (prog-if 00 [VGA controller]) > Subsystem: Qumranet, Inc. Device 1100 > Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- > ParErr- Stepping- SERR- FastB2B- DisINTx- > Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- > SERR- Region 0: Memory at 80000000 (32-bit, prefetchable) [size=16M] > Region 2: Memory at 81000000 (32-bit, non-prefetchable) [size=4K] > Expansion ROM at 81010000 [disabled] [size=64K] Yes. So this is "-vga std", not "-vga cirrus". In this case, it might make sense to add a property to the VGA that forces an endianness over the other, and then to specify that property in order to use Mac OS X. However, you should specify it whatever the host endianness and the host OS is. If this is not the case, you're just exchanging a bug with another. If something a) works with Linux host but not with Mac OS X host b) and works with Linux guest but not with Mac OS X guest the only logical explanation is that you have more than one bug, and they somehow cancel each other. The fix is to find and stomp all the bugs, not to introduce an option for the cases that end up buggy. Paolo