linux-kernel - Re: [PATCH] hpet: Enable hidden HPET on NVidia motherboards

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:	Sun, 15 Apr 2007 22:45:41 +0100
From:	Alistair John Strachan <s0348365@....ed.ac.uk>
To:	Mikko Tiihonen <mikko.tiihonen@....fi>
Cc:	clemens@...isch.de, bob.picco@...com, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] hpet: Enable hidden HPET on NVidia motherboards

On Sunday 15 April 2007 21:14, Mikko Tiihonen wrote:
> Enables HPET for NVidia motherboards with broken BIOS. The patch reads the
> HPET address from the pci config space. The patch should also work if ACPI
> is disabled.
>
> The HPET search is done in early-quirks because even
> DECLARE_PCI_FIXUP_EARLY was too late. If the new quirk causes problems it
> can be disabled with the nohpet boot option.
>
> The patch assumes that the BIOS has done the basic setup of HPET, but has
> not published the result in ACPI tables. This is at least true for some
> Asus and Gigabyte motherboards.

This works fine on my DFI Lanparty UT nForce4 CK804 mainboard:

alistair@...ocles:~$ dmesg | grep hpet
[   25.677099] hpet0: at MMIO 0xfefff000, IRQs 2, 8, 31
[   25.677102] hpet0: 3 32-bit timers, 25000000 Hz
[   25.678799] Time: hpet clocksource has been installed.

I've been wanting hpets for a while, this patch is extremely useful to me.

Unfortunately your patch does not seem to apply with standard tools, perhaps 
your mailer corrupted it (I just hand applied it).

Thanks Mikko.

-- 
Cheers,
Alistair.

Final year Computer Science undergraduate.
1F2 55 South Clerk Street, Edinburgh, UK.
-
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/