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Re: [Qemu-devel] [RFC] Memory API


From: Gleb Natapov
Subject: Re: [Qemu-devel] [RFC] Memory API
Date: Thu, 19 May 2011 11:26:44 +0300

On Wed, May 18, 2011 at 09:27:55PM +0200, Jan Kiszka wrote:
> > if an I/O is to the APIC page,
> >    it's handled by the APIC
> 
> That's not that simple. We need to tell apart:
>  - if a cpu issued the request, and which one => forward to APIC
And cpu mode may affect where access is forwarded to. If cpu is in SMM
mode access to frame buffer may be forwarded to a memory (depends on
chipset configuration).

>  - if the range was addressed by a device (PCI or other system bus
>    devices) => forward to MSI or other MMIO handlers
> 



--
                        Gleb.



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