[ltp] Re: [RESEND] [PATCH 2/3] Introduce acpi_root_table=rsdt boot param and dmi list to force rsdt

[Matthew Garrett]

On Tue, Oct 21, 2008 at 11:57:44AM +0200, Thomas Renninger wrote:
> Yes we have:
>  - XP uses 32 bit addresses
>  - Vista uses the newer FADT revision and there the 64 bit addresses.
> 
> This information is from BIOS engineers who should know Windows behaviour much 
> better than we ever could.

If Vista is absolutely known to *always* use the 64-bit addresses under 
every single circumstance where they're present, then yes, I agree that 
this is probably the least bad situation. This is trivial to test - 
install Vista on an R40e and see if it hangs on boot. If it does, I 
withdraw my objection. If not, then we're not fixing it properly.

-- 
Matthew Garrett | mjg59@srcf.ucam.org