[SeaBIOS] ohci bulk?

Avi Kivity avi at redhat.com
Tue Nov 23 09:21:33 CET 2010

On 11/23/2010 09:48 AM, 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.

In other words, SMIACT# is an address bit.  We could encode it in bit 63 
of gpa_t.

I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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