Re: [Qemu-devel] [PULL 14/28] exec: make address spaces 64-bit wide

[Mike Day]

>>
>> The address above has already been masked. What you need to do is read
>> the BAR. If the value from the BAR end in '1', its MMIO. If it ends in
>> '10', its RAM. If it ends in '0n' its disabled. The first thing that
>> the PCI software does after reading the BAR is mask off the two low
>> bits.
>
> Are you perhaps confusing MMIO and I/O port?  I/O port cannot be mmap'd
> on x86, so it can't be directly mapped.  It also doesn't come through
> the address_space_memory filter.  I/O port is deprecated, or at least
> discouraged, MMIO is not.  Thanks,

You're right, sorry I missed that. It doesn't solve the problem.

Mike