[PATCH v3 4/5] Documentation/arch/x86/amd-debugging: Add example for reset register

[Daniel Gibson <daniel@gibson.sh>]

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>
---
 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
-- 
2.48.1