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    Subject[PATCH 4.4 27/43] x86/vdso: Use static_cpu_has()
    Date
    4.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Borislav Petkov <bp@suse.de>

    commit 8c725306993198f845038dc9e45a1267099867a6 upstream

    ... and simplify and speed up a tad.

    Signed-off-by: Borislav Petkov <bp@suse.de>
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Brian Gerst <brgerst@gmail.com>
    Cc: Denys Vlasenko <dvlasenk@redhat.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Link: http://lkml.kernel.org/r/1453842730-28463-10-git-send-email-bp@alien8.de
    Signed-off-by: Ingo Molnar <mingo@kernel.org>
    Signed-off-by: Srivatsa S. Bhat <srivatsa@csail.mit.edu>
    Reviewed-by: Matt Helsley (VMware) <matt.helsley@gmail.com>
    Reviewed-by: Alexey Makhalov <amakhalov@vmware.com>
    Reviewed-by: Bo Gan <ganb@vmware.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---

    arch/x86/entry/vdso/vma.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/x86/entry/vdso/vma.c
    +++ b/arch/x86/entry/vdso/vma.c
    @@ -255,7 +255,7 @@ static void vgetcpu_cpu_init(void *arg)
    #ifdef CONFIG_NUMA
    node = cpu_to_node(cpu);
    #endif
    - if (cpu_has(&cpu_data(cpu), X86_FEATURE_RDTSCP))
    + if (static_cpu_has(X86_FEATURE_RDTSCP))
    write_rdtscp_aux((node << 12) | cpu);

    /*

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