Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
authorLinus Torvalds <torvalds@linux-foundation.org>
Tue, 14 Nov 2017 01:04:36 +0000 (17:04 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 14 Nov 2017 01:04:36 +0000 (17:04 -0800)
Pull x86 platform updates from Ingo Molnar:
 "The main changes in this cycle were:

   - a refactoring of the early virt init code by merging 'struct
     x86_hyper' into 'struct x86_platform' and 'struct x86_init', which
     allows simplifications and also the addition of a new
     ->guest_late_init() callback. (Juergen Gross)

   - timer_setup() conversion of the UV code (Kees Cook)"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/virt/xen: Use guest_late_init to detect Xen PVH guest
  x86/virt, x86/platform: Add ->guest_late_init() callback to hypervisor_x86 structure
  x86/virt, x86/acpi: Add test for ACPI_FADT_NO_VGA
  x86/virt: Add enum for hypervisors to replace x86_hyper
  x86/virt, x86/platform: Merge 'struct x86_hyper' into 'struct x86_platform' and 'struct x86_init'
  x86/platform/UV: Convert timers to use timer_setup()

21 files changed:
arch/x86/hyperv/hv_init.c
arch/x86/include/asm/hypervisor.h
arch/x86/include/asm/kvm_para.h
arch/x86/include/asm/x86_init.h
arch/x86/kernel/acpi/boot.c
arch/x86/kernel/apic/apic.c
arch/x86/kernel/apic/x2apic_uv_x.c
arch/x86/kernel/cpu/hypervisor.c
arch/x86/kernel/cpu/mshyperv.c
arch/x86/kernel/cpu/vmware.c
arch/x86/kernel/kvm.c
arch/x86/kernel/setup.c
arch/x86/kernel/x86_init.c
arch/x86/mm/init.c
arch/x86/xen/enlighten_hvm.c
arch/x86/xen/enlighten_pv.c
arch/x86/xen/enlighten_pvh.c
drivers/hv/vmbus_drv.c
drivers/input/mouse/vmmouse.c
drivers/misc/vmw_balloon.c
include/linux/hypervisor.h

index a5db63f..a0b86cf 100644 (file)
@@ -113,7 +113,7 @@ void hyperv_init(void)
        u64 guest_id;
        union hv_x64_msr_hypercall_contents hypercall_msr;
 
-       if (x86_hyper != &x86_hyper_ms_hyperv)
+       if (x86_hyper_type != X86_HYPER_MS_HYPERV)
                return;
 
        /* Allocate percpu VP index */
index 0ead9db..1b0a5ab 100644 (file)
 #ifdef CONFIG_HYPERVISOR_GUEST
 
 #include <asm/kvm_para.h>
+#include <asm/x86_init.h>
 #include <asm/xen/hypervisor.h>
 
 /*
  * x86 hypervisor information
  */
+
+enum x86_hypervisor_type {
+       X86_HYPER_NATIVE = 0,
+       X86_HYPER_VMWARE,
+       X86_HYPER_MS_HYPERV,
+       X86_HYPER_XEN_PV,
+       X86_HYPER_XEN_HVM,
+       X86_HYPER_KVM,
+};
+
 struct hypervisor_x86 {
        /* Hypervisor name */
        const char      *name;
@@ -35,40 +46,19 @@ struct hypervisor_x86 {
        /* Detection routine */
        uint32_t        (*detect)(void);
 
-       /* Platform setup (run once per boot) */
-       void            (*init_platform)(void);
-
-       /* X2APIC detection (run once per boot) */
-       bool            (*x2apic_available)(void);
+       /* Hypervisor type */
+       enum x86_hypervisor_type type;
 
-       /* pin current vcpu to specified physical cpu (run rarely) */
-       void            (*pin_vcpu)(int);
+       /* init time callbacks */
+       struct x86_hyper_init init;
 
-       /* called during init_mem_mapping() to setup early mappings. */
-       void            (*init_mem_mapping)(void);
+       /* runtime callbacks */
+       struct x86_hyper_runtime runtime;
 };
 
-extern const struct hypervisor_x86 *x86_hyper;
-
-/* Recognized hypervisors */
-extern const struct hypervisor_x86 x86_hyper_vmware;
-extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
-extern const struct hypervisor_x86 x86_hyper_xen_pv;
-extern const struct hypervisor_x86 x86_hyper_xen_hvm;
-extern const struct hypervisor_x86 x86_hyper_kvm;
-
+extern enum x86_hypervisor_type x86_hyper_type;
 extern void init_hypervisor_platform(void);
-extern bool hypervisor_x2apic_available(void);
-extern void hypervisor_pin_vcpu(int cpu);
-
-static inline void hypervisor_init_mem_mapping(void)
-{
-       if (x86_hyper && x86_hyper->init_mem_mapping)
-               x86_hyper->init_mem_mapping();
-}
 #else
 static inline void init_hypervisor_platform(void) { }
-static inline bool hypervisor_x2apic_available(void) { return false; }
-static inline void hypervisor_init_mem_mapping(void) { }
 #endif /* CONFIG_HYPERVISOR_GUEST */
 #endif /* _ASM_X86_HYPERVISOR_H */
index c373e44..7b407dd 100644 (file)
@@ -88,7 +88,6 @@ static inline long kvm_hypercall4(unsigned int nr, unsigned long p1,
 #ifdef CONFIG_KVM_GUEST
 bool kvm_para_available(void);
 unsigned int kvm_arch_para_features(void);
-void __init kvm_guest_init(void);
 void kvm_async_pf_task_wait(u32 token, int interrupt_kernel);
 void kvm_async_pf_task_wake(u32 token);
 u32 kvm_read_and_reset_pf_reason(void);
@@ -103,7 +102,6 @@ static inline void kvm_spinlock_init(void)
 #endif /* CONFIG_PARAVIRT_SPINLOCKS */
 
 #else /* CONFIG_KVM_GUEST */
-#define kvm_guest_init() do {} while (0)
 #define kvm_async_pf_task_wait(T, I) do {} while(0)
 #define kvm_async_pf_task_wake(T) do {} while(0)
 
index 8a1ebf9..5dd011a 100644 (file)
@@ -114,6 +114,20 @@ struct x86_init_pci {
        void (*fixup_irqs)(void);
 };
 
+/**
+ * struct x86_hyper_init - x86 hypervisor init functions
+ * @init_platform:             platform setup
+ * @guest_late_init:           guest late init
+ * @x2apic_available:          X2APIC detection
+ * @init_mem_mapping:          setup early mappings during init_mem_mapping()
+ */
+struct x86_hyper_init {
+       void (*init_platform)(void);
+       void (*guest_late_init)(void);
+       bool (*x2apic_available)(void);
+       void (*init_mem_mapping)(void);
+};
+
 /**
  * struct x86_init_ops - functions for platform specific setup
  *
@@ -127,6 +141,7 @@ struct x86_init_ops {
        struct x86_init_timers          timers;
        struct x86_init_iommu           iommu;
        struct x86_init_pci             pci;
+       struct x86_hyper_init           hyper;
 };
 
 /**
@@ -195,10 +210,20 @@ enum x86_legacy_i8042_state {
 struct x86_legacy_features {
        enum x86_legacy_i8042_state i8042;
        int rtc;
+       int no_vga;
        int reserve_bios_regions;
        struct x86_legacy_devices devices;
 };
 
+/**
+ * struct x86_hyper_runtime - x86 hypervisor specific runtime callbacks
+ *
+ * @pin_vcpu:          pin current vcpu to specified physical cpu (run rarely)
+ */
+struct x86_hyper_runtime {
+       void (*pin_vcpu)(int cpu);
+};
+
 /**
  * struct x86_platform_ops - platform specific runtime functions
  * @calibrate_cpu:             calibrate CPU
@@ -218,6 +243,7 @@ struct x86_legacy_features {
  *                             possible in x86_early_init_platform_quirks() by
  *                             only using the current x86_hardware_subarch
  *                             semantics.
+ * @hyper:                     x86 hypervisor specific runtime callbacks
  */
 struct x86_platform_ops {
        unsigned long (*calibrate_cpu)(void);
@@ -233,6 +259,7 @@ struct x86_platform_ops {
        void (*apic_post_init)(void);
        struct x86_legacy_features legacy;
        void (*set_legacy_features)(void);
+       struct x86_hyper_runtime hyper;
 };
 
 struct pci_dev;
index 079535e..ef9e02e 100644 (file)
@@ -961,6 +961,11 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
                x86_platform.legacy.rtc = 0;
        }
 
+       if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_VGA) {
+               pr_debug("ACPI: probing for VGA not safe\n");
+               x86_platform.legacy.no_vga = 1;
+       }
+
 #ifdef CONFIG_X86_PM_TIMER
        /* detect the location of the ACPI PM Timer */
        if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
index 51368ed..f72ecd5 100644 (file)
@@ -1645,7 +1645,7 @@ static __init void try_to_enable_x2apic(int remap_mode)
                 * under KVM
                 */
                if (max_physical_apicid > 255 ||
-                   !hypervisor_x2apic_available()) {
+                   !x86_init.hyper.x2apic_available()) {
                        pr_info("x2apic: IRQ remapping doesn't support X2APIC mode\n");
                        x2apic_disable();
                        return;
index 0d57bb9..c0b6948 100644 (file)
@@ -920,9 +920,8 @@ static __init void uv_rtc_init(void)
 /*
  * percpu heartbeat timer
  */
-static void uv_heartbeat(unsigned long ignored)
+static void uv_heartbeat(struct timer_list *timer)
 {
-       struct timer_list *timer = &uv_scir_info->timer;
        unsigned char bits = uv_scir_info->state;
 
        /* Flip heartbeat bit: */
@@ -947,7 +946,7 @@ static int uv_heartbeat_enable(unsigned int cpu)
                struct timer_list *timer = &uv_cpu_scir_info(cpu)->timer;
 
                uv_set_cpu_scir_bits(cpu, SCIR_CPU_HEARTBEAT|SCIR_CPU_ACTIVITY);
-               setup_pinned_timer(timer, uv_heartbeat, cpu);
+               timer_setup(timer, uv_heartbeat, TIMER_PINNED);
                timer->expires = jiffies + SCIR_CPU_HB_INTERVAL;
                add_timer_on(timer, cpu);
                uv_cpu_scir_info(cpu)->enabled = 1;
index 4fa9000..bea8d3e 100644 (file)
 #include <asm/processor.h>
 #include <asm/hypervisor.h>
 
+extern const struct hypervisor_x86 x86_hyper_vmware;
+extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
+extern const struct hypervisor_x86 x86_hyper_xen_pv;
+extern const struct hypervisor_x86 x86_hyper_xen_hvm;
+extern const struct hypervisor_x86 x86_hyper_kvm;
+
 static const __initconst struct hypervisor_x86 * const hypervisors[] =
 {
 #ifdef CONFIG_XEN_PV
@@ -41,54 +47,52 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] =
 #endif
 };
 
-const struct hypervisor_x86 *x86_hyper;
-EXPORT_SYMBOL(x86_hyper);
+enum x86_hypervisor_type x86_hyper_type;
+EXPORT_SYMBOL(x86_hyper_type);
 
-static inline void __init
+static inline const struct hypervisor_x86 * __init
 detect_hypervisor_vendor(void)
 {
-       const struct hypervisor_x86 *h, * const *p;
+       const struct hypervisor_x86 *h = NULL, * const *p;
        uint32_t pri, max_pri = 0;
 
        for (p = hypervisors; p < hypervisors + ARRAY_SIZE(hypervisors); p++) {
-               h = *p;
-               pri = h->detect();
-               if (pri != 0 && pri > max_pri) {
+               pri = (*p)->detect();
+               if (pri > max_pri) {
                        max_pri = pri;
-                       x86_hyper = h;
+                       h = *p;
                }
        }
 
-       if (max_pri)
-               pr_info("Hypervisor detected: %s\n", x86_hyper->name);
+       if (h)
+               pr_info("Hypervisor detected: %s\n", h->name);
+
+       return h;
 }
 
-void __init init_hypervisor_platform(void)
+static void __init copy_array(const void *src, void *target, unsigned int size)
 {
+       unsigned int i, n = size / sizeof(void *);
+       const void * const *from = (const void * const *)src;
+       const void **to = (const void **)target;
 
-       detect_hypervisor_vendor();
-
-       if (!x86_hyper)
-               return;
-
-       if (x86_hyper->init_platform)
-               x86_hyper->init_platform();
+       for (i = 0; i < n; i++)
+               if (from[i])
+                       to[i] = from[i];
 }
 
-bool __init hypervisor_x2apic_available(void)
+void __init init_hypervisor_platform(void)
 {
-       return x86_hyper                   &&
-              x86_hyper->x2apic_available &&
-              x86_hyper->x2apic_available();
-}
+       const struct hypervisor_x86 *h;
 
-void hypervisor_pin_vcpu(int cpu)
-{
-       if (!x86_hyper)
+       h = detect_hypervisor_vendor();
+
+       if (!h)
                return;
 
-       if (x86_hyper->pin_vcpu)
-               x86_hyper->pin_vcpu(cpu);
-       else
-               WARN_ONCE(1, "vcpu pinning requested but not supported!\n");
+       copy_array(&h->init, &x86_init.hyper, sizeof(h->init));
+       copy_array(&h->runtime, &x86_platform.hyper, sizeof(h->runtime));
+
+       x86_hyper_type = h->type;
+       x86_init.hyper.init_platform();
 }
index 236324e..85eb5fc 100644 (file)
@@ -254,9 +254,9 @@ static void __init ms_hyperv_init_platform(void)
 #endif
 }
 
-const __refconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
+const __initconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
        .name                   = "Microsoft Hyper-V",
        .detect                 = ms_hyperv_platform,
-       .init_platform          = ms_hyperv_init_platform,
+       .type                   = X86_HYPER_MS_HYPERV,
+       .init.init_platform     = ms_hyperv_init_platform,
 };
-EXPORT_SYMBOL(x86_hyper_ms_hyperv);
index 40ed268..8e00532 100644 (file)
@@ -205,10 +205,10 @@ static bool __init vmware_legacy_x2apic_available(void)
               (eax & (1 << VMWARE_PORT_CMD_LEGACY_X2APIC)) != 0;
 }
 
-const __refconst struct hypervisor_x86 x86_hyper_vmware = {
+const __initconst struct hypervisor_x86 x86_hyper_vmware = {
        .name                   = "VMware",
        .detect                 = vmware_platform,
-       .init_platform          = vmware_platform_setup,
-       .x2apic_available       = vmware_legacy_x2apic_available,
+       .type                   = X86_HYPER_VMWARE,
+       .init.init_platform     = vmware_platform_setup,
+       .init.x2apic_available  = vmware_legacy_x2apic_available,
 };
-EXPORT_SYMBOL(x86_hyper_vmware);
index 3df743b..b40ffbf 100644 (file)
@@ -498,7 +498,7 @@ static void __init kvm_apf_trap_init(void)
        update_intr_gate(X86_TRAP_PF, async_page_fault);
 }
 
-void __init kvm_guest_init(void)
+static void __init kvm_guest_init(void)
 {
        int i;
 
@@ -578,12 +578,13 @@ static uint32_t __init kvm_detect(void)
        return kvm_cpuid_base();
 }
 
-const struct hypervisor_x86 x86_hyper_kvm __refconst = {
+const __initconst struct hypervisor_x86 x86_hyper_kvm = {
        .name                   = "KVM",
        .detect                 = kvm_detect,
-       .x2apic_available       = kvm_para_available,
+       .type                   = X86_HYPER_KVM,
+       .init.guest_late_init   = kvm_guest_init,
+       .init.x2apic_available  = kvm_para_available,
 };
-EXPORT_SYMBOL_GPL(x86_hyper_kvm);
 
 static __init int activate_jump_labels(void)
 {
index 07da46e..6cced87 100644 (file)
@@ -1296,7 +1296,7 @@ void __init setup_arch(char **cmdline_p)
 
        io_apic_init_mappings();
 
-       kvm_guest_init();
+       x86_init.hyper.guest_late_init();
 
        e820__reserve_resources();
        e820__register_nosave_regions(max_low_pfn);
index a088b2c..c8fa4cd 100644 (file)
@@ -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 +83,13 @@ 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,
+               .guest_late_init        = x86_init_noop,
+               .x2apic_available       = bool_x86_init_noop,
+               .init_mem_mapping       = x86_init_noop,
+       },
 };
 
 struct x86_cpuinit_ops x86_cpuinit = {
@@ -101,6 +110,7 @@ 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);
index af5c1ed..a22c2b9 100644 (file)
@@ -671,7 +671,7 @@ void __init init_mem_mapping(void)
        load_cr3(swapper_pg_dir);
        __flush_tlb_all();
 
-       hypervisor_init_mem_mapping();
+       x86_init.hyper.init_mem_mapping();
 
        early_memtest(0, max_pfn_mapped << PAGE_SHIFT);
 }
index de503c2..8268987 100644 (file)
@@ -1,3 +1,4 @@
+#include <linux/acpi.h>
 #include <linux/cpu.h>
 #include <linux/kexec.h>
 #include <linux/memblock.h>
@@ -188,8 +189,6 @@ static void __init xen_hvm_guest_init(void)
        xen_hvm_init_time_ops();
        xen_hvm_init_mmu_ops();
 
-       if (xen_pvh_domain())
-               machine_ops.emergency_restart = xen_emergency_restart;
 #ifdef CONFIG_KEXEC_CORE
        machine_ops.shutdown = xen_hvm_shutdown;
        machine_ops.crash_shutdown = xen_hvm_crash_shutdown;
@@ -226,12 +225,33 @@ static uint32_t __init xen_platform_hvm(void)
        return xen_cpuid_base();
 }
 
-const struct hypervisor_x86 x86_hyper_xen_hvm = {
+static __init void xen_hvm_guest_late_init(void)
+{
+#ifdef CONFIG_XEN_PVH
+       /* Test for PVH domain (PVH boot path taken overrides ACPI flags). */
+       if (!xen_pvh &&
+           (x86_platform.legacy.rtc || !x86_platform.legacy.no_vga))
+               return;
+
+       /* PVH detected. */
+       xen_pvh = true;
+
+       /* Make sure we don't fall back to (default) ACPI_IRQ_MODEL_PIC. */
+       if (!nr_ioapics && acpi_irq_model == ACPI_IRQ_MODEL_PIC)
+               acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM;
+
+       machine_ops.emergency_restart = xen_emergency_restart;
+       pv_info.name = "Xen PVH";
+#endif
+}
+
+const __initconst struct hypervisor_x86 x86_hyper_xen_hvm = {
        .name                   = "Xen HVM",
        .detect                 = xen_platform_hvm,
-       .init_platform          = xen_hvm_guest_init,
-       .pin_vcpu               = xen_pin_vcpu,
-       .x2apic_available       = xen_x2apic_para_available,
-       .init_mem_mapping       = xen_hvm_init_mem_mapping,
+       .type                   = X86_HYPER_XEN_HVM,
+       .init.init_platform     = xen_hvm_guest_init,
+       .init.x2apic_available  = xen_x2apic_para_available,
+       .init.init_mem_mapping  = xen_hvm_init_mem_mapping,
+       .init.guest_late_init   = xen_hvm_guest_late_init,
+       .runtime.pin_vcpu       = xen_pin_vcpu,
 };
-EXPORT_SYMBOL(x86_hyper_xen_hvm);
index e55d276..fbd054d 100644 (file)
@@ -1459,9 +1459,9 @@ static uint32_t __init xen_platform_pv(void)
        return 0;
 }
 
-const struct hypervisor_x86 x86_hyper_xen_pv = {
+const __initconst struct hypervisor_x86 x86_hyper_xen_pv = {
        .name                   = "Xen PV",
        .detect                 = xen_platform_pv,
-       .pin_vcpu               = xen_pin_vcpu,
+       .type                   = X86_HYPER_XEN_PV,
+       .runtime.pin_vcpu       = xen_pin_vcpu,
 };
-EXPORT_SYMBOL(x86_hyper_xen_pv);
index 7bd3ee0..436c4f0 100644 (file)
@@ -25,13 +25,6 @@ struct boot_params pvh_bootparams __attribute__((section(".data")));
 struct hvm_start_info pvh_start_info;
 unsigned int pvh_start_info_sz = sizeof(pvh_start_info);
 
-static void xen_pvh_arch_setup(void)
-{
-       /* Make sure we don't fall back to (default) ACPI_IRQ_MODEL_PIC. */
-       if (nr_ioapics == 0)
-               acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM;
-}
-
 static void __init init_pvh_bootparams(void)
 {
        struct xen_memory_map memmap;
@@ -102,6 +95,4 @@ void __init xen_prepare_pvh(void)
        wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32));
 
        init_pvh_bootparams();
-
-       x86_init.oem.arch_setup = xen_pvh_arch_setup;
 }
index 937801a..2cd134d 100644 (file)
@@ -1534,7 +1534,7 @@ static int __init hv_acpi_init(void)
 {
        int ret, t;
 
-       if (x86_hyper != &x86_hyper_ms_hyperv)
+       if (x86_hyper_type != X86_HYPER_MS_HYPERV)
                return -ENODEV;
 
        init_completion(&probe_event);
index 0f58678..1ae5c1e 100644 (file)
@@ -316,11 +316,9 @@ static int vmmouse_enable(struct psmouse *psmouse)
 /*
  * Array of supported hypervisors.
  */
-static const struct hypervisor_x86 *vmmouse_supported_hypervisors[] = {
-       &x86_hyper_vmware,
-#ifdef CONFIG_KVM_GUEST
-       &x86_hyper_kvm,
-#endif
+static enum x86_hypervisor_type vmmouse_supported_hypervisors[] = {
+       X86_HYPER_VMWARE,
+       X86_HYPER_KVM,
 };
 
 /**
@@ -331,7 +329,7 @@ static bool vmmouse_check_hypervisor(void)
        int i;
 
        for (i = 0; i < ARRAY_SIZE(vmmouse_supported_hypervisors); i++)
-               if (vmmouse_supported_hypervisors[i] == x86_hyper)
+               if (vmmouse_supported_hypervisors[i] == x86_hyper_type)
                        return true;
 
        return false;
index 1e688bf..9047c0a 100644 (file)
@@ -1271,7 +1271,7 @@ static int __init vmballoon_init(void)
         * Check if we are running on VMware's hypervisor and bail out
         * if we are not.
         */
-       if (x86_hyper != &x86_hyper_vmware)
+       if (x86_hyper_type != X86_HYPER_VMWARE)
                return -ENODEV;
 
        for (is_2m_pages = 0; is_2m_pages < VMW_BALLOON_NUM_PAGE_SIZES;
index b4054fd..b19563f 100644 (file)
@@ -7,8 +7,12 @@
  *             Juergen Gross <jgross@suse.com>
  */
 
-#ifdef CONFIG_HYPERVISOR_GUEST
-#include <asm/hypervisor.h>
+#ifdef CONFIG_X86
+#include <asm/x86_init.h>
+static inline void hypervisor_pin_vcpu(int cpu)
+{
+       x86_platform.hyper.pin_vcpu(cpu);
+}
 #else
 static inline void hypervisor_pin_vcpu(int cpu)
 {