On Sun, 18 Feb 2018 23:15:32 +0100 Yves-Alexis Perez <cor...@debian.org> wrote:
> 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 I didn't know about chipsec but reading the code seems to rely on an out-of-tree kernel module. I don't think it matches what we need here.
