[tip:x86/pti] x86/vsyscall/64: Use proper accessor to update P4D entry

Commit-ID: 31ad7f8e7dc94d3b85ccf9b6141ce6dfd35a1781 Gitweb: https://git.kernel.org/tip/31ad7f8e7dc94d3b85ccf9b6141ce6dfd35a1781 Author: Boris Ostrovsky AuthorDate: Mon, 19 Mar 2018 10:31:54 -0400 Committer: Ingo Molnar CommitDate: Tue, 20 Mar 2018 12:00:53 +0100 x86/vsyscall/64: Use pr

[tip:x86/pti] x86/vsyscall/64: Use proper accessor to update p4d entry

Commit-ID: f9ee6990bd505ecefa014f5e699b3c4d25860d80 Gitweb: https://git.kernel.org/tip/f9ee6990bd505ecefa014f5e699b3c4d25860d80 Author: Boris Ostrovsky AuthorDate: Mon, 19 Mar 2018 10:31:54 -0400 Committer: Thomas Gleixner CommitDate: Tue, 20 Mar 2018 09:04:51 +0100 x86/vsyscall/64: Us