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xen-devel
Re: [Xen-devel] ACPI-Tables corrupted?
On 06/08/2010 14:39, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:
>> If we don't zap the DMAR then every existing dom0 kernel will fail with new
>> hypervisor.
>
> Who decided that this zapping is going to work on all systems in the
> future?
Someone at Intel.
> E.g. I can't see why a BIOS shouldn't decide to put most of
> the ACPI tables in chipset write protected memory, if a chipset offers
> such? In such an environment, Dom0 would still see the original
> signature - shouldn't we thus correct the original mistake of fiddling
> with the ACPI tables as we now have to touch that code anyway?
Well it's harmless to try zapping it I think, now we reinstate it on kexec.
Trying to be smarter in dom0 *as well* is plausible I guess.
-- Keir
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