* Appending firmware/hardware dump to vmcore during kernel panic
@ 2018-02-20 10:56 Rahul Lakkireddy
0 siblings, 0 replies; only message in thread
From: Rahul Lakkireddy @ 2018-02-20 10:56 UTC (permalink / raw)
To: linux-kernel, netdev
Cc: akpm, torvalds, davem, ganeshgr, nirranjan, indranil,
rahul.lakkireddy
Hi all,
We have a requirement to collect firmware/hardware state of the
underlying NIC during kernel panic. We are doing this in cxgb4
driver, using panic notifier list [1]. cxgb4 registers a callback
function to the panic notifier list, which gets invoked during kernel
panic. In the callback function, firmware/hardware dump is collected
into pre-allocated buffer and then extracted later from the vmcore,
for post-analysis.
Is this approach of using panic notifier correct? Any suggestions are
much appreciated.
Thanks,
Rahul
[1] https://patchwork.ozlabs.org/patch/873830/
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2018-02-20 10:56 Appending firmware/hardware dump to vmcore during kernel panic Rahul Lakkireddy
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