x86/process: Allow runtime control of Speculative Store Bypass

[mirror_ubuntu-artful-kernel.git] / arch / x86 / kernel / x86_init.c

diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index a088b2c47f7396dbfa9bd070ebc8f3c544a33d07..5b2d10c1973ab13cff47a9be663406a4c52171ed 100644 (file)
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -28,6 +28,8 @@ void x86_init_noop(void) { }
 void __init x86_init_uint_noop(unsigned int unused) { }
 int __init iommu_init_noop(void) { return 0; }
 void iommu_shutdown_noop(void) { }
+bool __init bool_x86_init_noop(void) { return false; }
+void x86_op_int_noop(int cpu) { }
 
 /*
  * The platform setup functions are preset with the default functions
@@ -81,6 +83,12 @@ struct x86_init_ops x86_init __initdata = {
                .init_irq               = x86_default_pci_init_irq,
                .fixup_irqs             = x86_default_pci_fixup_irqs,
        },
+
+       .hyper = {
+               .init_platform          = x86_init_noop,
+               .x2apic_available       = bool_x86_init_noop,
+               .init_mem_mapping       = x86_init_noop,
+       },
 };
 
 struct x86_cpuinit_ops x86_cpuinit = {
@@ -101,6 +109,7 @@ struct x86_platform_ops x86_platform __ro_after_init = {
        .get_nmi_reason                 = default_get_nmi_reason,
        .save_sched_clock_state         = tsc_save_sched_clock_state,
        .restore_sched_clock_state      = tsc_restore_sched_clock_state,
+       .hyper.pin_vcpu                 = x86_op_int_noop,
 };
 
 EXPORT_SYMBOL_GPL(x86_platform);