Re: [RFT] x86 acpi: normalize segment descriptor register on resume

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

On Tue, 1 Jul 2008 09:20:24 +0200 Ingo Molnar <mingo@elte.hu> wrote:

> * Rafael J. Wysocki <rjw@sisk.pl> wrote:
> 
> > Hi,
> > 
> > The appended patch fixes a regression and is considered as 2.6.26 
> > material. Everyone having a box with working suspend to RAM is gently 
> > requested to test it and verify if it doesn't break things.
> > 
> > The patch applies to the current -git.
> 
> The fix is _really_ tempting, but i think it's 2.6.26.1 material at the 
> earliest. I just counted about 8 red flag items in that commit:
> 
>   - "assembly code"
>   - "fresh change"
>   - "suspend/resume"
>   - "real-mode code"
>   - "ACPI"
>   - "SMM"
>   - "CPU erratas"
>   - "boot code"
> 
> I'd say it's probably 90% fine, but it's just too much risk at this 
> stage i think. The regression was only found 2 weeks ago, and the commit 
> that broke it was upstream for 2 months (and was under testing for about 
> 4 months).

Merge it into 2.6.27-rc1 and add Cc: <stable@kernel.org> to the changelog with
a note "needed in 2.6.26.x after a couple of weeks testing in mainline" or
something like that.

I expect 2.6.25.x will be maintained for a while yet too...