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Re: [Qemu-devel] [PATCH] isapc: Shadow ISA BIOS by default
From: |
Michael Tokarev |
Subject: |
Re: [Qemu-devel] [PATCH] isapc: Shadow ISA BIOS by default |
Date: |
Wed, 12 Sep 2012 09:57:04 +0400 |
User-agent: |
Mozilla/5.0 (X11; Linux i686 on x86_64; rv:10.0.6esrpre) Gecko/20120817 Icedove/10.0.6 |
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