linux-kernel - Re: shpc with acpi=off?

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] [day] [month] [year] [list]

Date:	Thu, 23 Feb 2012 08:48:13 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	lenb@...nel.org, linux-acpi@...r.kernel.org
Subject: Re: shpc with acpi=off?

On Thu, 16 Feb 2012 17:04:22 +0200
"Michael S. Tsirkin" <mst@...hat.com> wrote:

> I have a box where shpc works fine with acpi,
> as well as when acpi is not built into kernel,
> but fails with acpi=off
> Some debugging seems to indicate that
> acpi_get_hp_hw_control_from_firmware
> fails with acpi=off.
> 
> Is this a bug or is there a reason to prevent shpc
> from working in this setup?
> Do we even care about acpi=off?
> Assuming we want to make acpi_get_hp_hw_control_from_firmware
> succeed with acpi=off, what is the best way to do this?
> Check acpi_pci_disabled?

Yeah not sure it's important to have SHPC work with acpi=off.
Disabling ACPI prevents us from getting all sorts of important info
these days...

-- 
Jesse Barnes, Intel Open Source Technology Center

Download attachment "signature.asc" of type "application/pgp-signature" (837 bytes)