Re: [Qemu-devel] [PATCH] isapc: Shadow ISA BIOS by default

[Michael Tokarev]

On 11.09.2012 19:53, Jan Kiszka wrote:
> Our one and only BIOS depends on a writable shadowed BIOS in the ISA
> range. As we have no interface to control the write property, make that
> region writable by default.

We've a long-standing bug --
 http://bugs.debian.org/605525
 https://bugs.launchpad.net/qemu/+bug/1024248

(qemu-system-x86_64 -M isapc shows blank guest screen)

I assume this patch fixes it for qemu/tcg case, but not for
qemu/kvm case right?

I just tested this patch on qemu 1.1 (it applies cleanly), and
it appears to work as expected, ie, the issue mentioned above
is fixed by it.  But I also noticed that kvm mode is not
affected -- at least the sympthoms mentioned above does not
apply.

> Signed-off-by: Jan Kiszka <address@hidden>
> ---
> 
> This unbreaks isapc for TCG, and keep it working for KVM once it starts
> supporting read-only memslots.

Can you clarify please, -- referring to the above? :)

Thanks,

/mjt