security/Kconfig: Correct the Documentation reference for PTI

CVE-2017-5715 (Spectre v2 retpoline)

commit a237f762681e2a394ca67f21df2feb2b76a3609b upstream.

When the config option for PTI was added a reference to documentation was
added as well. But the documentation did not exist at that point. The final
documentation has a different file name.

Fix it up to point to the proper file.

Fixes: 385ce0ea ("x86/mm/pti: Add Kconfig")
Signed-off-by: W. Trevor King <wking@tremily.us>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: linux-mm@kvack.org
Cc: linux-security-module@vger.kernel.org
Cc: James Morris <james.l.morris@oracle.com>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/3009cc8ccbddcd897ec1e0cb6dda524929de0d14.1515799398.git.wking@tremily.us
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 26ef466810d78c2dc80e1d8b71fc259d9da2936b)
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/security/Kconfig b/security/Kconfig
index 529dccc22ce57a4479c261f202099a2942139948..f05be4d91f69e41a4b1ab7416309c08292982dfc 100644 (file)
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -105,7 +105,7 @@ config PAGE_TABLE_ISOLATION
          ensuring that the majority of kernel addresses are not mapped
          into userspace.
 
-         See Documentation/x86/pagetable-isolation.txt for more details.
+         See Documentation/x86/pti.txt for more details.
 
 config SECURITY_INFINIBAND
        bool "Infiniband Security Hooks"