From: "Scott Parish" <srparish@us.ibm.com>
To: "Nakajima, Jun" <jun.nakajima@intel.com>
Cc: xen-devel@lists.xensource.com, Scott Parish <srparish@us.ibm.com>
Subject: Re: [patch] (resend) mask out nx bits when calculatingpfn/mfn
Date: Tue, 7 Jun 2005 16:23:10 +0000 [thread overview]
Message-ID: <20050607162310.GD3182@us.ibm.com> (raw)
In-Reply-To: <7F740D512C7C1046AB53446D37200173042FE7E4@scsmsx402.amr.corp.intel.com>
On Tue, Jun 07, 2005 at 09:58:20AM -0700, Nakajima, Jun wrote:
> But did you really see the NX bit? I think that (NX bit) would be a good
> catch and it explains several failures of device drivers. We should fix
> the creator of the pte (by __supported_pte_mask), not the consumer of
> it.
I was seeing it in xen_contig_memory(), which was getting called by
e100_alloc_cbs(). The crash was happening when i would run "xend start"
By "fix the creator", your suggesting that there shouldn't be an NX bit
set? Why?
> We also need to fix Xen because Xen should not reject the request just
> because it has the NX bit on.
An NX bit is now an official part of a page frame number???
i'm confused
sRp
--
Scott Parish
Signed-off-by: srparish@us.ibm.com
next prev parent reply other threads:[~2005-06-07 16:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-07 16:58 [patch] (resend) mask out nx bits when calculatingpfn/mfn Nakajima, Jun
2005-06-07 16:23 ` Scott Parish [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-06-07 17:16 Nakajima, Jun
2005-06-07 16:57 ` Scott Parish
2005-06-07 18:33 Nakajima, Jun
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