On Tue, 2013-01-29 at 16:45 -0500, Kevin OConnor wrote: > > I'm a bit surprised that OVMF would mark all of the 0xc0000-0xfffff > area as read-only. There are lots of old programs that want to use > parts of that area as memory.
Well, there are EDK2-based machines out there in the field which are starting to show problems with "high" persistent PMM allocations happening below 16MiB and polluting the E820 memory map too — which is the topic of one of my other proposed fixes that should be in the CSM specification v0.98. So nothing much surprises me... I suspect that anyone who is actually paying any attention to detail is already "extending" the spec for themselves. -- dwmw2
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