Unable to read firmware registers on crash?

[Michal Kazior]

On 4 February 2015 at 05:28, Ben Greear <greearb at candelatech.com> wrote:
> Well, it seems to work at least when I crash it nicely with the
> debugfs firmware-assert hooks.  Tested on x86...if I have endian
> issues, things might go poorly on other platforms.
>
> Here is patch I am using in ath10k...  I added similar logic to the
> CT firmware.  Now, will have to see if we can reproduce the crash where
> CE transport totally fails...

If you have a system capable of IOMMU you can force CE to access a
non-mapped memory. You could try inserting a bogus CE item address in
one of its rings.


Michał