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

[Rafael J. Wysocki]

On Tuesday, 1 of July 2008, H. Peter Anvin wrote:
> Ingo Molnar wrote:
> > * Rafael J. Wysocki <rjw@xxxxxxx> 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.
> > 
> > it's been under testing in tip/out-of-tree for about a week:
> > 
> > | commit ee901dc1b9ab94a37ba2efc296fe9ba72bc75adf
> > | Author:     H. Peter Anvin <hpa@xxxxxxxxx>
> > | AuthorDate: Tue Jun 24 23:03:48 2008 +0200
> > | Commit:     Ingo Molnar <mingo@xxxxxxx>
> > | CommitDate: Wed Jun 25 18:48:13 2008 +0200
> > |
> > |     x86 ACPI: normalize segment descriptor register on resume
> > 
> > no problems caused by it so far.
> > 
> 
> Here is the incremental patch which should stick "strictly to the 
> script" of ljmp immediately after writing CR0.PE.  This should be done 
> to the boot code as well; I'm waiting for confirmation from the Elan 
> original reporter before submitting that patch.
> 
> I decided to make this an incremental patch to make it bisectable versus 
> the other one, however, it should probably be considered the right thing.
> 
> Note: I have not tested this beyond compilation, I'm afraid.

I have tested it on the nx6325 (64-bit) on top of the today's linux-next.  It
works fine for me.

Thanks,
Rafael
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