netdev - Re: [PATCH 5/7] pci: Export the pci_restore_msi

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]

Date:	Sun, 21 Oct 2007 21:01:17 -0700
From:	"Michael Chan" <mchan@...adcom.com>
To:	"David Miller" <davem@...emloft.net>,
	"Matthew Carlson" <mcarlson@...adcom.com>
cc:	netdev@...r.kernel.org, linux-pci@...ey.karlin.mff.cuni.cz,
	linas@...tin.ibm.com
Subject: Re: [PATCH 5/7] pci: Export the pci_restore_msi_state()
 function

David Miller wrote:

> I'm not so sure about this.
> 
> Perhaps, instead, you should do a pci_msi_disable() and
> pci_msi_enable() in the error detection and recovery sequence.

If we just detected PCI errors on this slot, I don't think it's
a good idea to continue writing to the config space to disable
MSI.  Perhaps we can disable/enable after the slot reset.

> 
> Or, alternatively, save/restore those MSI registers by hand.

We can do that, but we'll have to do it ahead of time when we enable
MSI, not after errors have been detected.  But the address/data can
change as the CPU affinity changes during run time, right?

-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html