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: <20071019195749.GK29903@austin.ibm.com>
Date:	Fri, 19 Oct 2007 14:57:49 -0500
From:	linas@...tin.ibm.com (Linas Vepstas)
To:	Shane Huang <chunhao.huang@...mail.com>
Cc:	davem@...emloft.net, gregkh@...e.de, htejun@...il.com,
	brice.goglin@...il.com, david.gaarenstroom@...il.com,
	linux-kernel@...r.kernel.org, linux-pci@...ey.karlin.mff.cuni.cz,
	shane.huang@....com, jgarzik@...ox.com, linux-ide@...r.kernel.org
Subject: Re: [patch] PCI: disable MSI on more ATI NorthBridges

On Fri, Oct 19, 2007 at 09:17:23PM +0800, Shane Huang wrote:
> Since we have little experience on PCI and MSI here, we had to try to

As someone else pointed out, AMD should have *lots* of people with
pci and msi experience on the payroll.  (Folks here buy AMD-designed 
pci chips ...)

> ONLY
> comment out the pci_intx() call in drivers/ata/ahci.c
> My system can boot up too with MSI enabled!
> 
> So does it mean that the root cause is our SB700 SATA controller
> has a hardware bug where setting INTX_DISABLE in the PCI COMMAND
> register masks MSI interrupts too? 

That's what it sounds like, to me.

> And what is the software solution or workaround?

Not sure. Sounds like the device driver needs a quirk for this part.

The over-worked Jeff Garzik is the maintainer for that driver.

You should probably provide the pci device id for this beast.

--linas

-
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