linux-kernel - Re: [PATCH] More i8042-reset quirks for MSI Wind-clone netbooks

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: <20090616171732.GA14912@srcf.ucam.org>
Date:	Tue, 16 Jun 2009 18:17:32 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, greg@...ah.com, yan.i.li@...el.com
Subject: Re: [PATCH] More i8042-reset quirks for MSI Wind-clone netbooks

On Tue, Jun 16, 2009 at 06:15:49PM +0100, Alan Cox wrote:
> On Tue, 16 Jun 2009 17:43:51 +0100
> Matthew Garrett <mjg59@...f.ucam.org> wrote:
> 
> > On Tue, Jun 16, 2009 at 05:36:18PM +0100, Alan Cox wrote:
> > > > So? If the alternative is machines that don't work until they're added 
> > > > to a blacklist, then the correct thing to do is to do it 
> > > > unconditionally.
> > > 
> > > I would disagree: that breaks a whole pile of other machines
> > 
> > I was under the impression that this was the reset path that Windows 
> > followed. If not then that suggests that we're fixing it wrong in the 
> > first place?
> 
> You need to magically divine what various random windows driver
> patches do and also allow for the fact that your i8042 may be completely
> faked SMM, partially faked, or just randomly confused. Resetting loses
> various bits of config/status that get put back by windows drivers we
> don't have enough info on and in machine specific ways.

So the touchpad on these machines doesn't work with generic Windows? I'm 
interested in the specifics, not general issues with i8042 
implementations. We've repeatedly seen that these quirk tables end up 
inadequately comprehensive and in several cases have masked the actual 
problem.

-- 
Matthew Garrett | mjg59@...f.ucam.org
--
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/