Re: [PATCH v2] build: use correct qemu path in systemd service file and init script

[Ian Campbell <ian.campbell@citrix.com>]

On Thu, 2015-07-30 at 14:51 +0800, Ting-Wei Lan wrote:
> When --with-system-qemu is used, it is possible that we cannot find
> qemu-system-i386 in LIBEXEC_BIN, which can cause error in xencommons
> init script and xen-qemu-dom0-disk-backend.service systemd service.
> 
> Signed-off-by: Ting-Wei Lan <lantw44@gmail.com>

Personally I would have omitted the distinction between @qemu_xen_path@ and
@qemu_xen_systemd@ and just put the env invocation in the service file as
"/usr/bin/env @qemu_xen_path@" but I suppose that is just bike shedding,
so:

Acked-by: Ian Campbell <ian.campbell@citrix.com>

Wei Lui, what do you think about this for 4.6? It fixes a real issue where 
--with-system-qemu is used without an explicit path, which is supposed to
search for "qemu" in $PATH but fails to do so for the initscripts and unit
files, where it uses the old hardcoded default value instead, which
probably doesn't exist if you are using this option (and if it did isn't
the thing the user asked for).

The fix looks pretty straight forward to me.

Mostly unrelated, is "qemu" a sensible default here? No binary package on
Debian actually provides a "qemu" binary, they are all qemu-system-foo or
variants. I'm not sure if that's just a Debian packaging issue though. I've
added the Qemu-xen maintainers for input...

Ian.