linux-kernel - Re: [PATCH 3/4] Revert "x86: disable IOMMUs on kernel crash"

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Message-ID: <20100403191314.GR24846@8bytes.org>
Date:	Sat, 3 Apr 2010 21:13:14 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Chris Wright <chrisw@...s-sol.org>,
	Joerg Roedel <joerg.roedel@....com>, nhorman@...hat.com,
	nhorman@...driver.com, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org, hbabu@...ibm.com,
	iommu@...ts.linux-foundation.org, vgoyal@...hat.com
Subject: Re: [PATCH 3/4] Revert "x86: disable IOMMUs on kernel crash"

On Sat, Apr 03, 2010 at 10:49:09AM -0700, Eric W. Biederman wrote:
> Joerg Roedel <joro@...tes.org> writes:

> > Another problem: This also breaks if the kdump kernel has no
> > iommu-support.
> 
> Not a problem.  We require a lot of things of the kdump kernel,
> and it is immediately apparent in a basic sanity test.

Only if the sanity test is done on an iommu machine which I don't want
to rely on.

	Joerg

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