Re: [PATCH 2/2] x86/xen: Disable DMI parsing in Xen kernel.

From: Ingo Molnar
Date: Thu Feb 28 2008 - 04:46:47 EST



* Ian Campbell <ijc@xxxxxxxxxxxxxx> wrote:

> 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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