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    Subject[PATCH] x86/vsmp: Fix linker error when CONFIG_PROC_FS is not set
    Date
    set_vsmp_pv_ops() references no_irq_affinity which is undeclared if
    CONFIG_PROC_FS isn't set. Fix this by adding an ifdef around this
    variable's access.

    Reported-by: Fengguang Wu <wfg@linux.intel.com>
    Signed-off-by: Ido Yariv <ido@wizery.com>
    Acked-by: Shai Fultheim <shai@scalemp.com>
    ---
    arch/x86/kernel/vsmp_64.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c
    index 6b96a73..3f0285a 100644
    --- a/arch/x86/kernel/vsmp_64.c
    +++ b/arch/x86/kernel/vsmp_64.c
    @@ -101,7 +101,10 @@ static void __init set_vsmp_pv_ops(void)
    #ifdef CONFIG_SMP
    if (cap & ctl & BIT(8)) {
    ctl &= ~BIT(8);
    +#ifdef CONFIG_PROC_FS
    + /* Don't let users change irq affinity via procfs */
    no_irq_affinity = 1;
    +#endif
    }
    #endif

    --
    1.7.10.2


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