Re: [Xen-devel] How can i redirect the writes to the console from the HVM (port 0xe9) to Qemu?

[Tom Rotenberg <tom.rotenberg@xxxxxxxxx>]

Great, thanks!

On Tue, Aug 4, 2009 at 6:26 PM, Keir Fraser<keir.fraser@xxxxxxxxxxxxx> wrote:
> On 04/08/2009 15:31, "Tom Rotenberg" <tom.rotenberg@xxxxxxxxx> wrote:
>
>> Does anyone know how can i register my own "hook" function on this
>> port, without modifying the code in hvm.c? Is there a chain of writes?
>
> You need to modify hvm_print_line() in hvm.c to return X86EMUL_UNHANDLEABLE
> rather than X86EMUL_OKAY. This will cause Xen to think that the handler
> could not handle the port access and so fall back to sending the port access
> to qemu, which is what you want.
>
>  -- Keir
>
>
>

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