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Date: Thu, 11 Jul 2019 13:45:58 +0200
From: <>
Cc: <>
Subject: Patch "Documentation/admin: Remove the vsyscall=native documentation" has been added to the 5.2-stable tree

This is a note to let you know that I've just added the patch titled

    Documentation/admin: Remove the vsyscall=native documentation

to the 5.2-stable tree which can be found at:;a=summary

The filename of the patch is:
and it can be found in the queue-5.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <> know about it.

>From d974ffcfb7447db5f29a4b662a3eaf99a4e1109e Mon Sep 17 00:00:00 2001
From: Andy Lutomirski <>
Date: Wed, 26 Jun 2019 21:45:02 -0700
Subject: Documentation/admin: Remove the vsyscall=native documentation

From: Andy Lutomirski <>

commit d974ffcfb7447db5f29a4b662a3eaf99a4e1109e upstream.

The vsyscall=native feature is gone -- remove the docs.

Fixes: 076ca272a14c ("x86/vsyscall/64: Drop "native" vsyscalls")
Signed-off-by: Andy Lutomirski <>
Signed-off-by: Thomas Gleixner <>
Acked-by: Kees Cook <>
Cc: Florian Weimer <>
Cc: Jann Horn <>
Cc: Borislav Petkov <>
Cc: Kernel Hardening <>
Cc: Peter Zijlstra <>
Signed-off-by: Greg Kroah-Hartman <>

 Documentation/admin-guide/kernel-parameters.txt |    6 ------
 1 file changed, 6 deletions(-)

--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5102,12 +5102,6 @@
 			emulate     [default] Vsyscalls turn into traps and are
 			            emulated reasonably safely.
-			native      Vsyscalls are native syscall instructions.
-			            This is a little bit faster than trapping
-			            and makes a few dynamic recompilers work
-			            better than they would in emulation mode.
-			            It also makes exploits much easier to write.
 			none        Vsyscalls don't work at all.  This makes
 			            them quite hard to use for exploits but
 			            might break your system.

Patches currently in stable-queue which might be from are


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