On Thu, Jun 27, 2013 at 11:00:50AM +0200, Leif Lindholm wrote:

On Thu, Jun 27, 2013 at 02:32:19AM +0100, Matthew Garrett wrote:

quoted

We can probably get away with that now, but it does risk us ending up 
with some firmware that expects to run in physical mode (boards designed 
for Linux) and some firmware that expects to run in virtual mode (boards 
designed for Windows). The degree of lockdown in the Windows ecosystem 
at present means it's not a real problem at the moment, but if that ever 
changes we're going to risk incompatibility.

Is there anything preventing calling SetVirtualAddressMap() with a
1:1 map?

No, but we've seen bugs as a result on some x86 systems. As far as the 
spec, though, you're fine.

-- 
Matthew Garrett | mjg59 at srcf.ucam.org