[SeaBIOS] ohci bulk?
kraxel at redhat.com
Mon Nov 22 15:49:08 CET 2010
On 11/22/10 14:47, Kevin O'Connor wrote:
> On Mon, Nov 22, 2010 at 11:52:56AM +0100, Gerd Hoffmann wrote:
>>> [ access pci bars from real mode ]
>> Hmm, how about having a virtual "I/O bounce" device? Allocate two
>> dwords in I/O space. One dword for the address, one for the data.
>> reads and writes to the data register will be bounced to the address
>> written into the address register.
> It could work. However, having the ability to go into full 32bit mode
> would be more flexible.
Indeed, and it would also allow to move bios code into high memory.
>> On real hardware seabios could emulate this using SMM.
>> On virtual hardware qemu could emulate this so we don't need SMM
>> support in kvm.
> How hard would it be to add SMM support into kvm?
Dunno. As I understand it the biggest issue is that kvm needs complete
instruction emulation for big real mode as intel vmx supports protected
mode only. Correct Avi?
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