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Date: Mon, 10 Jun 2019 13:25:27 -0700
From: Andy Lutomirski <luto@...nel.org>
To: x86@...nel.org
Cc: LKML <linux-kernel@...r.kernel.org>,
Andy Lutomirski <luto@...nel.org>,
stable@...r.kernel.org,
Kees Cook <keescook@...omium.org>,
Borislav Petkov <bp@...en8.de>,
Kernel Hardening <kernel-hardening@...ts.openwall.com>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 1/5] x86/vsyscall: Remove the vsyscall=native documentation
The vsyscall=native feature is gone -- remove the docs.
Fixes: 076ca272a14c ("x86/vsyscall/64: Drop "native" vsyscalls")
Cc: stable@...r.kernel.org
Cc: Kees Cook <keescook@...omium.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Kernel Hardening <kernel-hardening@...ts.openwall.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Andy Lutomirski <luto@...nel.org>
---
Documentation/admin-guide/kernel-parameters.txt | 6 ------
1 file changed, 6 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 43176340c73d..e1a3525d07f2 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5086,12 +5086,6 @@
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.
--
2.21.0
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