[SeaBIOS] ohci bulk?

Gleb Natapov gleb at redhat.com
Tue Nov 23 09:21:44 CET 2010

On Tue, Nov 23, 2010 at 09:48:58AM +0200, Avi Kivity wrote:
> On 11/23/2010 09:45 AM, Gleb Natapov wrote:
> >>
> >>  Yes.  We could define a set of alternate memory slots to be used
> >>  when SMM is active.  The mmu is already prepared (like we support
> >>  vcpus with different paging modes simultaneously).
> >>
> >But memory slots resides below mmu. The responsible of mmu is to
> >translate gva to gpa. After that memory slots are used to translate
> >gpa into hva and at this point it is not per vcpu. With SMM one vcpu
> >can generate MMIO access and another one memory access with the same
> >gpa.
> The mmu would translate gva to a (gpa, smm) pair (when tdp is
> enabled, translate gpa or ngpa to (gpa, smm).  gfn_to_page()
> translates a (gpa, smm) pair to a struct page.
Actually smm is a vcpu state, so only gfn_to_pfn will have to be changed
to get vcpu as a parameter (or is_smm flag, although this look like very
x86ish thing for common code where gfn_to_pfn resides).


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