Re: [PATCH 1/2] Documentation/arch/x86/amd-debugging: Add example for reset register

[Mario Limonciello <superm1@kernel.org>]

On 6/24/26 07:43, Daniel Gibson wrote:
> The amd debugging documentation didn't state how to identify kernel log
> lines with information from the reset register about the cause of a
> previous random reboot.
> 
> The added example rectifies this.
> 
> Suggested-by: Mario Limonciello (AMD) <superm1@kernel.org>
> Signed-off-by: Daniel Gibson <daniel@gibson.sh>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
> ---
>   Documentation/arch/x86/amd-debugging.rst | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/arch/x86/amd-debugging.rst b/Documentation/arch/x86/amd-debugging.rst
> index d92bf59d62c7..3176a1240fee 100644
> --- a/Documentation/arch/x86/amd-debugging.rst
> +++ b/Documentation/arch/x86/amd-debugging.rst
> @@ -366,3 +366,8 @@ There are 6 classes of reasons for the reboot:
>   This information is read by the kernel at bootup and printed into
>   the syslog. When a random reboot occurs this message can be helpful
>   to determine the next component to debug.
> +
> +For example, if bit 19 was set, you will get a message like this in the log on
> +next bootup::
> +
> +  x86/amd: Previous system reset reason [0x00080000]: software wrote 0x6 to reset control register 0xCF9