Re: [PATCH v2] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory
From: Jonathan Corbet <corbet@lwn.net>
Date: 2024-10-07 17:37:13
Also in:
linux-doc, lkml
From: Jonathan Corbet <corbet@lwn.net>
Date: 2024-10-07 17:37:13
Also in:
linux-doc, lkml
Steven Rostedt [off-list ref] writes:
On Mon, 07 Oct 2024 11:06:06 -0600 Jonathan Corbet [off-list ref] wrote:quoted
Steven Rostedt [off-list ref] writes:quoted
Jon, This version should be good to go.Applied, thanks.And I now see I sent an older version that had a typo in it :-p + Note, saving the trace buffer across reboots does require that the system + is set up to not wipe memory. For instance, CONFIG_RESET_ATTACK_MITIGATION + can force a memory reset on boot which will clear any trace that was stored. + This is just one of many ways that can clear memory. Make sure you system your system + keeps the content of memory across reboots before relying on this option. + I can send a v3.
*Grumble... :) I haven't pushed out my tree yet, so I can replace the other one. jon