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Date: Thu, 16 Jan 2014 09:16:50 +0800
From: Fam Zheng <famz@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH v16 0/9] Shared library module support
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: Kevin Wolf <kwolf@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Michael Tokarev <mjt@tls.msk.ru>, QEMU Developers <qemu-devel@nongnu.org>, Alex Bligh <alex@alex.org.uk>, Paolo Bonzini <pbonzini@redhat.com>, Miroslav Rezanina <mrezanin@redhat.com>, =?iso-8859-1?Q?Llu=EDs?= Vilanova <vilanova@ac.upc.edu>, Richard Henderson <rth@twiddle.net>

On Wed, 01/15 14:40, Peter Maydell wrote:
> On 15 January 2014 14:36, Paolo Bonzini <pbonzini@redhat.com> wrote:
> > Il 15/01/2014 15:20, Peter Maydell ha scritto:
> >>> >
> >>> > On RHEL6 I tried "qemu-system-x86_64 -cdrom
> >>> > http://boot.ipxe.org/ipxe.iso" and it worked, but it failed on Fedora.
> >>> > I don't know if it's a QEMU or curl bug.
> >> Doesn't work on MacOSX either: it says
> >> qemu-system-x86_64: -cdrom http://boot.ipxe.org/ipxe.iso: could not
> >> open disk image http://boot.ipxe.org/ipxe.iso: Unknown protocol
> >
> > Had you installed QEMU before starting it?  Fam, I think you need a way
> > to override CONFIG_MODDIR (even an environment variable could do).
> 
> No, I pretty much never install QEMU. I always run it out of a build
> directory. Module loading should IMHO work with similar semantics
> to the data dir we use for BIOS file loading: one of the places checked
> is relative to the executable path.
> 
> Maybe we should also have better error messages for "I tried
> to load a module and this error is because I couldn't find one",
> so the user might be prompted to install the modules package his
> distro provides or investigate config if it's self-built, or whatever...
> 

Sounds good to me. Will add a message.

Fam