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
| ||
|
Date: Sat, 27 Jun 2009 12:44:09 +0100 From: David Woodhouse <dwmw2@...radead.org> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Chris Wright <chrisw@...hat.com>, FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>, fenghua.yu@...el.com, akpm@...ux-foundation.org, tony.luck@...el.com, linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org, linux-ia64@...r.kernel.org Subject: Re: [PATCH v2] IA64 Compilation Error Fix for Intel IOMMU Identity Mapping Support On Thu, 2009-06-25 at 19:00 -0700, Linus Torvalds wrote: > > On Thu, 25 Jun 2009, Chris Wright wrote: > > I tested it on x86; works fine and creates a slightly tighter set of page > > tables (matching to e820). But I don't have an IA-64 box w/ an IOMMU. > > > > It does have one problem, however, the graphics work around code isn't > > compiled in on IA-64, so it needs: > > Ok. Sounds like what I want is to get this patch through the ia64 people, > after it has gotten some testing there. Since ia64 is where the current > kernel fails anyway, that sounds like the motivation will be there too. > > And there's little point in me merging it until it's been tested to fix > the actual problem we have now. Well, the main problem is that the kernel doesn't build -- and it _has_ been tested to fix that. As long as the daily linux-next test builds work, nobody really seems to _care_ about VT-d on IA64 -- certainly not enough to get me a box when they asked me to become VT-d maintainer. Now that I chase it up, I've received only one test report and that was "oh, even 2.6.29 doesn't boot on this box with VT-d enabled". The patch _does_ fix the build breakage, definitely seems to be doing the right thing, and the worst case is that the new feature doesn't work on IA64. So I think we should merge it. I'll bash some heads together and try to get myself some hardware so I can actually test it on IA64 -- it looks like we have more problems there than the small possibility that the new passthrough feature might do the wrong thing (and in fact I suspect all IA64 VT-d hardware is new enough to have the _hardware_ passthrough anyway, so won't need this identity mapping set up at all). Please pull Chris's fix from git://git.infradead.org/iommu-2.6.git -- David Woodhouse Open Source Technology Centre David.Woodhouse@...el.com Intel Corporation -- 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