[tip: ras/core] x86/mce: Document the mce=print_all command line parameter

[tip-bot2 for Shreshth Srivastava]

The following commit has been merged into the ras/core branch of tip:

Commit-ID:     b0fa123835c147e77b9a967de76dc899062bd405
Gitweb:        https://git.kernel.org/tip/b0fa123835c147e77b9a967de76dc899062bd405
Author:        Shreshth Srivastava <shreshth.srivastava@xxxxxxxxx>
AuthorDate:    Wed, 22 Jul 2026 18:37:30 -07:00
Committer:     Borislav Petkov (AMD) <bp@xxxxxxxxx>
CommitterDate: Wed, 22 Jul 2026 20:25:20 -07:00

x86/mce: Document the mce=print_all command line parameter

The mce=print_all command line option is supported but has never
been documented. Add it.

Suggested-by: Sohil Mehta <sohil.mehta@xxxxxxxxx>
Signed-off-by: Shreshth Srivastava <shreshth.srivastava@xxxxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Reviewed-by: Sohil Mehta <sohil.mehta@xxxxxxxxx>
Acked-by: Tony Luck <tony.luck@xxxxxxxxx>
Link: https://patch.msgid.link/20260723013730.3033-1-shreshth.srivastava@xxxxxxxxx
---
 Documentation/admin-guide/kernel-parameters.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index b5493a7..fa820ff 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3782,6 +3782,9 @@ Kernel parameters
 		nobootlog
 			disable boot machine check logging.
 
+		print_all
+			print all machine check logs to the console.
+
 		monarchtimeout (number)
 			sets the time in us to wait for other CPUs on machine
 			checks. 0 to disable.