On 04/18/2013 01:13 PM, H. Peter Anvin wrote: > On 04/18/2013 01:11 PM, Darren Hart wrote: >>> >>> I would expect that if there are any 32-bit UEFI systems that ship with >>> BGRT support (and Darren makes it sound like that's a possibility), >>> there's a realistic chance of the BGRT ending up allocated above the >>> highmem barrier. >> >> I can certainly ensure we sit below that barrier on the MinnowBoard. We >> can also speak with the Intel UEFI firmware development teams to see >> about making that a requirement. I don't know if we'll be successful, >> but Matt, Peter, and I have recently coaxed some changes of that nature in. >> > > No, that is the wrong approach. The HIGHMEM barrier is a Linux kernel > construct and isn't even guaranteed to be the same from one boot *of the > same kernel* to another. The value 896M is merely the default, but it > can be affected by both compile time and command line options. > > -hpa
Ah, well then I've misunderstood the nature of the problem a bit. Will have to spend some time understanding this better. -- Darren Hart Intel Open Source Technology Center Yocto Project - Linux Kernel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
