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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <200807012239.44105.rjw@sisk.pl>
Date:	Tue, 1 Jul 2008 22:39:43 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Ingo Molnar <mingo@...e.hu>, kernel-testers@...r.kernel.org,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Pavel Machek <pavel@....cz>
Subject: Re: [RFT] x86 acpi: normalize segment descriptor register on resume

On Tuesday, 1 of July 2008, H. Peter Anvin wrote:
> Ingo Molnar wrote:
> > * Rafael J. Wysocki <rjw@...k.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.
> > 
> > it's been under testing in tip/out-of-tree for about a week:
> > 
> > | commit ee901dc1b9ab94a37ba2efc296fe9ba72bc75adf
> > | Author:     H. Peter Anvin <hpa@...or.com>
> > | AuthorDate: Tue Jun 24 23:03:48 2008 +0200
> > | Commit:     Ingo Molnar <mingo@...e.hu>
> > | 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/