* Ian Campbell <ijc@hellion.org.uk> wrote:

quoted text
> Actually scratch this patchset -- its not sufficient. For example 
> ddcprobe in userspace causes the exact same issue vs 0xa0000.
> 
> Looks like the only sane solution will be to mark regions between 
> 640K-1M reserved early on in boot.

and as luck has it, such a patch from Alexander van Heukelum has been 
put into x86.git#testing just yesterday.

So ... could you try x86.git#testing - does it work out of box? Is the 
reservation early enough to prevent pagetables be allocated in weird 
places? [or am i missing something - this is about the guest kernel 
reserving th 640k..1M area, not the host kernel - right?]

	Ingo
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