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Documentation/admin: Remove the vsyscall=native documentation

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

Fixes: 076ca272a1 ("x86/vsyscall/64: Drop "native" vsyscalls")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kees 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
This commit is contained in:
Andy Lutomirski 2019-06-26 21:45:02 -07:00 committed by Thomas Gleixner
parent 4b972a01a7
commit d974ffcfb7
1 changed files with 0 additions and 6 deletions
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6
Documentation/admin-guide/kernel-parameters.txt
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@ -5102,12 +5102,6 @@
emulate [default] Vsyscalls turn into traps and are emulate [default] Vsyscalls turn into traps and are
emulated reasonably safely. 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 none Vsyscalls don't work at all. This makes
them quite hard to use for exploits but them quite hard to use for exploits but
might break your system. might break your system.