x86/vsyscall/64: Use proper accessor to update P4D entry
Writing to it directly does not work for Xen PV guests. Fixes: 49275fef ("x86/vsyscall/64: Explicitly set _PAGE_USER in the pagetable hierarchy") Signed-off-by:Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Reviewed-by:
Juergen Gross <jgross@suse.com> Acked-by:
Andy Lutomirski <luto@kernel.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180319143154.3742-1-boris.ostrovsky@oracle.com Signed-off-by:
Ingo Molnar <mingo@kernel.org>
parent
5927145e
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