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: <200711131501.01320.bjorn.helgaas@hp.com>
Date:	Tue, 13 Nov 2007 15:01:01 -0700
From:	Bjorn Helgaas <bjorn.helgaas@...com>
To:	linux-pci@...ey.karlin.mff.cuni.cz
Cc:	Greg KH <greg@...ah.com>, Alex Chiang <achiang@...com>,
	Matthew Wilcox <matthew@....cx>, gregkh@...e.de,
	kristen.c.accardi@...el.com, lenb@...nel.org, rick.jones2@...com,
	linux-kernel@...r.kernel.org, pcihpd-discuss@...ts.sourceforge.net,
	linux-acpi@...r.kernel.org
Subject: Re: [PATCH 0/5][RFC] Physical PCI slot objects

On Tuesday 13 November 2007 02:30:49 pm Greg KH wrote:
> On Tue, Nov 13, 2007 at 01:36:45PM -0700, Alex Chiang wrote:
> > * Greg KH <greg@...ah.com>:
> > > IBM sells a program that does this for server rooms.  It's
> > > probably part of some Tivoli package somewhere, sorry I don't
> > > remember the name.  I did see it working many years ago and it
> > > required no kernel changes at all to work properly.

Do you know how this Tivoli package works or where it gets the
information?

> > Like I said in an earlier email, HP ia64 systems will require a
> > kernel change to get this information. Whether it comes via a
> > generic ACPI access layer like dev_acpi, or something like this
> > patch series, the kernel will still get touched.
> 
> And like I said, I'm pretty sure you don't need to touch the kernel
> today as there are people doing this just fine from userspace without
> any kernel changes needed :)

I think you are assuming userspace can just dump the raw ACPI tables
and extract this information from them.  But I don't think that's
possible because _SUN is a method that can contain arbitrary AML.
That AML has to be *executed*, and you can't do that safely in
userspace.

Bjorn
-
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/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ