linux-kernel - Re: [regression, bisected] fails to boot on Dell Optiplex 760 with VT-d enabled

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:	Mon, 17 Aug 2009 16:29:37 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	Faidon Liambotis <paravoid@...ian.org>
Cc:	Chris Wright <chrisw@...s-sol.org>,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	David Woodhouse <David.Woodhouse@...el.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>
Subject: Re: [regression, bisected] fails to boot on Dell Optiplex 760 with
	VT-d enabled

* Faidon Liambotis (paravoid@...ian.org) wrote:
> As an observation, David's patch is checking if *both* iommu->cap and
> iommu->ecap are -1, while yours checks for either. You're also checking
> for ver. Obviously, I have no idea which of the two is more correct.

David's looks fine to me, and as a bonus it's already queued up ;-)
None of those registers should return -1.

thanks,
-chris
--
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/