Re: [PATCH] KVM: SVM: Pass through the host kernel's IO delay port

[Paolo Bonzini <pbonzini@redhat.com>]

Marcelo Tosatti wrote:
> On Mon, Jun 22, 2009 at 07:57:22PM +0200, Paolo Bonzini wrote:
>> Marcelo Tosatti wrote:
>>> Paolo,
>>>
>>> As said in private email you can change the port 80 passthrough to
>>> disabled only on those hosts that have broken port 80 (you can find the
>>> blacklist at arch/x86/kernel/io_delay.c).c
>> Actually I read the code more and, since pv_ops is actually disabling  
>> outs to port 80 if the guest is sufficiently new, it may even make more  
>> sense for easier maintenance to remove the port 80 passthrough on Intel  
>> processors as well...
> 
> But what about Windows guests?

I don't think they are using port 80 to delay ISA access, are they?

Paolo