Re: [Xen-devel] guest attempted write to read-only memory page.

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 22/12/2008 10:12, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:

> I guess it's caused by 18931 to update rombios to latest bochs
> version, and some writes to rom area are added outside of disabling
> rom write access. But I'm not familiar with this part, and thus hope
> others (Akio?) may take a deeper dive.

Etherboot likes to try to write to its ROM area. That's why I actually
silenced the warning in __hvm_copy(). I would guess the reason you see this
issue now is because the accesses are taking the shadow-fault path, which
means you are no longer emulating real mode? ;-)

Possibly we should silence the shadow code too, at least perhaps while in
real mode or for a certain EIP range.

 -- Keir



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