From: Yves-Alexis Perez <corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
To: "Raj, Ashok" <ashok.raj-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
Cc: Ravi V Shankar
<ravi.v.shankar-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Fenghua Yu <fenghua.yu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Andy Shevchenko
<andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Gayatri Kammela
<gayatri.kammela-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH v7 0/5] Add Intel IOMMU debugfs support
Date: Sun, 18 Feb 2018 23:15:32 +0100 [thread overview]
Message-ID: <1518992132.2542.5.camel@debian.org> (raw)
In-Reply-To: <20180213214002.GA27066@otc-nc-03>
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On Tue, 2018-02-13 at 13:40 -0800, Raj, Ashok wrote:
> This version has only hw dumps for now, but we plan to add some other things
> like walking 2nd level page-tables, or get some SVM specific data from the
> driver in the future.
Hi,
I'm not sure how much you know about chipsec [1], but with a oneliner [2] you
can have it print a lot of data from Vt-d configuration, including page
tables. As far as I remember, it doesn't need access to /dev/mem (but I gidn't
dig to check how it does it).
It might still be useful to have everything from debugfs because it'll always
be consistent with the current running kernel, but at least it might help
users reporting bugs.
[1] https://github.com/chipsec/chipsec
[2] http://paste.debian.net/1010105
--
Yves-Alexis
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next prev parent reply other threads:[~2018-02-18 22:15 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-03 0:49 [PATCH v7 0/5] Add Intel IOMMU debugfs support Sohil Mehta
[not found] ` <1517619001-148586-1-git-send-email-sohil.mehta-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-02-03 0:49 ` [PATCH v7 1/5] iommu/vt-d: Relocate struct/function declarations to its header files Sohil Mehta
2018-02-03 0:49 ` [PATCH v7 2/5] iommu/vt-d: Enable debugfs support to show context internals Sohil Mehta
2018-02-03 0:49 ` [PATCH v7 3/5] iommu/vt-d: Add debugfs support to show register contents Sohil Mehta
2018-02-03 0:50 ` [PATCH v7 4/5] iommu/vt-d: Add debugfs support to show Pasid table contents Sohil Mehta
2018-02-03 0:50 ` [PATCH v7 5/5] iommu/vt-d: Add debugfs support for Interrupt remapping Sohil Mehta
2018-02-04 14:13 ` [PATCH v7 0/5] Add Intel IOMMU debugfs support Andy Shevchenko
2018-02-13 14:03 ` Joerg Roedel
2018-02-13 21:40 ` Raj, Ashok
2018-02-13 22:53 ` Jacob Pan
2018-02-15 9:53 ` Joerg Roedel
[not found] ` <20180215095337.fccoozdclfnbepi4-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2018-02-15 16:38 ` Jacob Pan
2018-03-15 13:18 ` Joerg Roedel
[not found] ` <20180315131854.s6xmltsvsysublcw-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2018-03-19 16:37 ` Jacob Pan
2018-03-29 8:48 ` Joerg Roedel
[not found] ` <20180329084824.fvy7cg2wban4by4n-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2018-03-29 15:52 ` Gary R Hook
2018-03-29 16:05 ` Jacob Pan
2018-02-18 22:15 ` Yves-Alexis Perez [this message]
[not found] ` <1518992132.2542.5.camel-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
2018-02-20 22:25 ` Jacob Pan
2018-02-22 7:48 ` Yves-Alexis Perez
[not found] ` <1519285717.2388.11.camel-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
2018-02-22 17:09 ` Jacob Pan
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