Re: Bug#776911: gnome-shell: fails to start on i386 when [Mesa was] built with llvm-3.5
- To: Kill Your TV <killyourtv@i2pmail.org>
- Cc: intrigeri <intrigeri@debian.org>, mesa@packages.debian.org, Michael Gilbert <mgilbert@debian.org>, 776911@bugs.debian.org, 776911-submitter@bugs.debian.org
- Subject: Re: Bug#776911: gnome-shell: fails to start on i386 when [Mesa was] built with llvm-3.5
- From: Simon McVittie <smcv@debian.org>
- Date: Tue, 10 Mar 2015 08:15:58 +0000
- Message-id: <[🔎] 54FEA83E.9020400@debian.org>
- In-reply-to: <20150309223054.E82CDAE3E7@smtp.postman.i2p>
- References: <E1YIZet-0000ig-3p@zorro.ztk-rp.eu> <20150204154917.GA24027@perpetual.pseudorandom.co.uk> <54D4F919.2050904@ztk-rp.eu> <54D505F3.8090209@debian.org> <CANTw=MMyebjrH2WweTjiS1U75HPEb+1Y1LRDvOkwLrZwJ3K1KQ@mail.gmail.com> <20150226085404.GA19327@perpetual.pseudorandom.co.uk> <20150308200200.5E2A6AE3E1@smtp.postman.i2p> <20150309190922.A205EAE3EA@smtp.postman.i2p> <20150309210455.CCD88AE3E1@smtp.postman.i2p> <20150309223054.E82CDAE3E7@smtp.postman.i2p>
On 09/03/15 22:30, Kill Your TV wrote:
> On Mon, 9 Mar 2015 21:04:55 +0000 (UTC)
> Simon McVittie <smcv@debian.org> wrote:
>> If your host CPU is missing any of those features, then emulating a
>> SandyBridge CPU in your VM is probably an invalid configuration.
>
> This is absolutely true of course (I personally use -cpu host), but
> IMHO there should be more graceful handling of the situation, falling
> back to something that will almost certainly work.
That's fine, but I don't think it's release-critical. Could you file a
separate bug for that part, please?
(I also think that's a qemu bug, more than an application bug; it
shouldn't let you emulate a CPU that isn't going to work. I don't think
applications should be expected to cope gracefully with an emulated CPU
that claims it can support instructions but does not actually execute
them correctly, which I think is what's going on in this case.)
S
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