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Commit a2a24b57 authored by Andy Lutomirski's avatar Andy Lutomirski Committed by Greg Kroah-Hartman
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Documentation/admin: Remove the vsyscall=native documentation 



commit d974ffcfb7447db5f29a4b662a3eaf99a4e1109e upstream.

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

Fixes: 076ca272 ("x86/vsyscall/64: Drop "native" vsyscalls")
Signed-off-by: default avatarAndy Lutomirski <luto@kernel.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarKees Cook <keescook@chromium.org>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: stable@vger.kernel.org
Cc: Borislav Petkov <bp@alien8.de>
Cc: Kernel Hardening <kernel-hardening@lists.openwall.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/d77c7105eb4c57c1a95a95b6a5b8ba194a18e764.1561610354.git.luto@kernel.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8a815007

Documentation/admin-guide/kernel-parameters.txt

+0 −6
Original line number Diff line number Diff line
@@ -4976,12 +4976,6 @@ 
			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.