Messages in this thread | | | Date | Fri, 22 Dec 2000 16:16:34 +0100 | From | Werner Almesberger <> | Subject | Re: Referencing PHYSICAL (what you see on the bus) memory? |
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Richard B. Johnson wrote: > I am finishing up a memory-test program. I want to get the > true linear address of some failing memory. I have obtained > the virtual (user-space) address. > > Since going through all the PTEs seems to be a bitch, I thought > it would be easier to do the following:
Hmm, for some unusual definition of "easy", perhaps ...
For an ugly hack that works remarkably well, look at ptable.c in Andrew Tridgell's capture program: http://samba.org/picturebook/
Note: you probably also want to check if you find multiple addresses for the page, i.e. if the hack didn't quite work. (Due to odd side-effects, incomplete address decoding, etc.)
- Werner
-- _________________________________________________________________________ / Werner Almesberger, ICA, EPFL, CH Werner.Almesberger@epfl.ch / /_IN_N_032__Tel_+41_21_693_6621__Fax_+41_21_693_6610_____________________/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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