Re: [Qemu-devel] [PATCH 6/6] qga: RFC: guest-side retrieval of fw_cfg file

[Gabriel L. Somlo]

On Tue, Mar 17, 2015 at 01:38:06PM +0100, Laszlo Ersek wrote:
> Ignore windows, go for the Linux driver. Matt wants the kernel driver:
> http://thread.gmane.org/gmane.comp.emulators.qemu/321875/focus=322263

Me too, after all, I suggested it. And I always wanted an excuse to
write a linux device driver... :)

But my problem is that lots of the guest VMs I'm doing this for in
the first place are Windows, so as much as I'd like to ignore them,
they just won't go away...

Which is why I've decided to prioritize the host-side bits, and give
myself time to think about how I'm going to optimize happiness for
all parties involved on the guest side of things :)

> In short, I think you caught either a gcc or (much more likely) a glibc
> bug. The glibc version dates back to glibc commit 40ff7949, 2002.
> 
> What do you think, Paolo?

I wonder if it's a known bug or a shiny new one :) I could try to
maybe write a simplified test to demonstrate it, and then file it
somewhere...

Thanks,
--Gabriel