Re: [Qemu-devel] [PATCH for-2.0 V3] tests/acpi-test: do not run iasl on big endian machines

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Mar 20, 2014 at 11:03:04PM +0000, Peter Maydell wrote:
> On 20 March 2014 22:41, Marcel Apfelbaum <marcel.a@redhat.com> wrote:
> > On Thu, 2014-03-20 at 22:17 +0000, Peter Maydell wrote:
> >> echo "trivial iasl source" | iasl --compile-options | iasl
> >> --disassemble-options | grep "error"
> >>
> >> Fill in the handwaving with actual syntax ;-)
> 
> > Problem with this solution is that if we start from the source,
> > it will compile into a *wrong* AML (e.g header length will be BE and not LE),
> > then the disassemble will *succeed* (!!!).
> > However, the expected AML file will be in the right format and fail :(.
> 
> Well, grep for 'some integer that comes out wrong due
> to the iasl bug', if it doesn't always result in an error
> like the case you reported to the iasl mailing list.
> 
> You need to write this code at some point because we do
> need to be able to configure-time detect whether we have
> a working iasl or a broken one, once fixed ones get out
> into the wild. It doesn't seem like it ought to be that hard
> to just do it right to start with...
> 
> thanks
> -- PMM

Hard to predict the future: it's possible that some distros
will ship partially broken iasl on BE.
We really need to see a working one to be sure ...

-- 
MST