Re: [RFC][PATCH] IO-APIC blacklist

[Andrew Morton <akpm@linux-foundation.org>]

On Sat, 2 Jun 2007 14:28:58 -0700 (PDT) Linus Torvalds <torvalds@linux-foundation.org> wrote:

> That blacklist entry is _ancient_. It's entirely possible that it's just 
> bogus: we've had so many ACPI fixes since it was added, that it's quite 
> possible that the blacklist entry itself is bogus, and is the result of 
> some old ACPI bug that triggered on that entry.
> 
> The Dell GX240 entry was added by commit 68e4ad79294 in the historic Linux 
> archive:
> 
>     Author: Len Brown <len.brown@intel.com>
>     Date:   Sat Aug 9 15:00:59 2003 -0400
> 
>     ACPI from 2.4:
>     build: add ACPI_HT, delete ACPI_HT_ONLY
>     boot: add acpi={force, off, ht}; delete "noht", "acpismp="
>     add DMI blacklist from UnitedLinux
> 
> and since it sounds like the machine _works_ with ACPI on, my real 
> preference would be to just remove the black-list entry.
> 
> In fact, I thought that patch already existed in the -mm tree?

It is.  remove-dell-optiplex-gx240-from-the-acpi-blacklist.patch

> Len - do you have any archives back from 2003 and earlier to indicate why 
> the Dell GX240 was blacklisted?

"add DMI blacklist from UnitedLinux".  Lost in the mists of time, I expect.

I guess we can tag remove-dell-optiplex-gx240-from-the-acpi-blacklist.patch
as "backport to 2.6.22.x if it doesn't break anything in 2.6.23-rcX".