Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cleanups from Ingo Molnar:
 "Misc cleanups"

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/kprobes: Remove trampoline_handler() prototype
  x86/kernel: Fix more -Wmissing-prototypes warnings
  x86: Fix various typos in comments
  x86/headers: Fix -Wmissing-prototypes warning
  x86/process: Avoid unnecessary NULL check in get_wchan()
  x86/traps: Complete prototype declarations
  x86/mce: Fix -Wmissing-prototypes warnings
  x86/gart: Rewrite early_gart_iommu_check() comment

arch/x86/crypto/cast5_avx_glue.c

 /*
- * Glue Code for the AVX assembler implemention of the Cast5 Cipher
+ * Glue Code for the AVX assembler implementation of the Cast5 Cipher
  *
  * Copyright (C) 2012 Johannes Goetzfried
  *     <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>

arch/x86/crypto/cast6_avx_glue.c

 /*
- * Glue Code for the AVX assembler implemention of the Cast6 Cipher
+ * Glue Code for the AVX assembler implementation of the Cast6 Cipher
  *
  * Copyright (C) 2012 Johannes Goetzfried
  *     <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>

arch/x86/entry/common.c

@@ -140,7 +140,7 @@ static void exit_to_usermode_loop(struct pt_regs *regs, u32 cached_flags)
 	/*
 	 * In order to return to user mode, we need to have IRQs off with
 	 * none of EXIT_TO_USERMODE_LOOP_FLAGS set.  Several of these flags
-	 * can be set at any time on preemptable kernels if we have IRQs on,
+	 * can be set at any time on preemptible kernels if we have IRQs on,
 	 * so we need to loop.  Disabling preemption wouldn't help: doing the
 	 * work to clear some of the flags can sleep.
 	 */

arch/x86/entry/vdso/vma.c

@@ -261,7 +261,7 @@ int map_vdso_once(const struct vdso_image *image, unsigned long addr)
 	 * abusing from userspace install_speciall_mapping, which may
 	 * not do accounting and rlimit right.
 	 * We could search vma near context.vdso, but it's a slowpath,
-	 * so let's explicitely check all VMAs to be completely sure.
+	 * so let's explicitly check all VMAs to be completely sure.
 	 */
 	for (vma = mm->mmap; vma; vma = vma->vm_next) {
 		if (vma_is_special_mapping(vma, &vdso_mapping) ||

arch/x86/events/intel/bts.c

@@ -589,7 +589,7 @@ static __init int bts_init(void)
 		 * the AUX buffer.
 		 *
 		 * However, since this driver supports per-CPU and per-task inherit
-		 * we cannot use the user mapping since it will not be availble
+		 * we cannot use the user mapping since it will not be available
 		 * if we're not running the owning process.
 		 *
 		 * With PTI we can't use the kernal map either, because its not

arch/x86/events/intel/core.c

@@ -1930,7 +1930,7 @@ static void intel_pmu_enable_all(int added)
  *   in sequence on the same PMC or on different PMCs.
  *
  * In practise it appears some of these events do in fact count, and
- * we need to programm all 4 events.
+ * we need to program all 4 events.
  */
 static void intel_pmu_nhm_workaround(void)
 {

arch/x86/events/intel/ds.c

@@ -1199,7 +1199,7 @@ static void setup_pebs_sample_data(struct perf_event *event,
 	/*
 	 * We must however always use iregs for the unwinder to stay sane; the
 	 * record BP,SP,IP can point into thin air when the record is from a
-	 * previous PMI context or an (I)RET happend between the record and
+	 * previous PMI context or an (I)RET happened between the record and
 	 * PMI.
 	 */
 	if (sample_type & PERF_SAMPLE_CALLCHAIN)

arch/x86/events/intel/p4.c

@@ -1259,7 +1259,7 @@ static int p4_pmu_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign
 		}
 		/*
 		 * Perf does test runs to see if a whole group can be assigned
-		 * together succesfully.  There can be multiple rounds of this.
+		 * together successfully.  There can be multiple rounds of this.
 		 * Unfortunately, p4_pmu_swap_config_ts touches the hwc->config
 		 * bits, such that the next round of group assignments will
 		 * cause the above p4_should_swap_ts to pass instead of fail.

arch/x86/include/asm/alternative.h

@@ -174,7 +174,7 @@ static inline int alternatives_text_reserved(void *start, void *end)
 /*
  * Alternative inline assembly with input.
  *
- * Pecularities:
+ * Peculiarities:
  * No memory clobber here.
  * Argument numbers start with 1.
  * Best is to use constraints that are fixed size (like (%1) ... "r")

arch/x86/include/asm/cmpxchg.h

@@ -7,7 +7,7 @@
 #include <asm/alternative.h> /* Provides LOCK_PREFIX */
 
 /*
- * Non-existant functions to indicate usage errors at link time
+ * Non-existent functions to indicate usage errors at link time
  * (or compile-time if the compiler implements __compiletime_error().
  */
 extern void __xchg_wrong_size(void)

arch/x86/include/asm/crash.h

@@ -6,5 +6,6 @@ int crash_load_segments(struct kimage *image);
 int crash_copy_backup_region(struct kimage *image);
 int crash_setup_memmap_entries(struct kimage *image,
 		struct boot_params *params);
+void crash_smp_send_stop(void);
 
 #endif /* _ASM_X86_CRASH_H */

arch/x86/include/asm/efi.h

@@ -19,7 +19,7 @@
  * This is the main reason why we're doing stable VA mappings for RT
  * services.
  *
- * This flag is used in conjuction with a chicken bit called
+ * This flag is used in conjunction with a chicken bit called
  * "efi=old_map" which can be used as a fallback to the old runtime
  * services mapping method in case there's some b0rkage with a
  * particular EFI implementation (haha, it is hard to hold up the

arch/x86/include/asm/irq.h

@@ -30,6 +30,9 @@ extern void fixup_irqs(void);
 
 #ifdef CONFIG_HAVE_KVM
 extern void kvm_set_posted_intr_wakeup_handler(void (*handler)(void));
+extern __visible void smp_kvm_posted_intr_ipi(struct pt_regs *regs);
+extern __visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs);
+extern __visible void smp_kvm_posted_intr_nested_ipi(struct pt_regs *regs);
 #endif
 
 extern void (*x86_platform_ipi_callback)(void);
@@ -41,9 +44,13 @@ extern __visible unsigned int do_IRQ(struct pt_regs *regs);
 
 extern void init_ISA_irqs(void);
 
+extern void __init init_IRQ(void);
+
 #ifdef CONFIG_X86_LOCAL_APIC
 void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
 				    bool exclude_self);
+
+extern __visible void smp_x86_platform_ipi(struct pt_regs *regs);
 #define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
 #endif
 

arch/x86/include/asm/irq_work.h

@@ -10,6 +10,7 @@ static inline bool arch_irq_work_has_interrupt(void)
 	return boot_cpu_has(X86_FEATURE_APIC);
 }
 extern void arch_irq_work_raise(void);
+extern __visible void smp_irq_work_interrupt(struct pt_regs *regs);
 #else
 static inline bool arch_irq_work_has_interrupt(void)
 {

arch/x86/include/asm/kvm_para.h

@@ -92,6 +92,7 @@ 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);
 extern void kvm_disable_steal_time(void);
+void do_async_page_fault(struct pt_regs *regs, unsigned long error_code);
 
 #ifdef CONFIG_PARAVIRT_SPINLOCKS
 void __init kvm_spinlock_init(void);

arch/x86/include/asm/paravirt.h

@@ -26,6 +26,11 @@ struct static_key;
 extern struct static_key paravirt_steal_enabled;
 extern struct static_key paravirt_steal_rq_enabled;
 
+__visible void __native_queued_spin_unlock(struct qspinlock *lock);
+bool pv_is_native_spin_unlock(void);
+__visible bool __native_vcpu_is_preempted(long cpu);
+bool pv_is_native_vcpu_is_preempted(void);
+
 static inline u64 paravirt_steal_clock(int cpu)
 {
 	return PVOP_CALL1(u64, time.steal_clock, cpu);

arch/x86/include/asm/reboot.h

@@ -26,6 +26,7 @@ void __noreturn machine_real_restart(unsigned int type);
 #define MRR_APM		1
 
 typedef void (*nmi_shootdown_cb)(int, struct pt_regs*);
+void nmi_panic_self_stop(struct pt_regs *regs);
 void nmi_shootdown_cpus(nmi_shootdown_cb callback);
 void run_crash_ipi_callback(struct pt_regs *regs);
 

arch/x86/include/asm/setup.h

@@ -46,6 +46,9 @@ extern unsigned long saved_video_mode;
 
 extern void reserve_standard_io_resources(void);
 extern void i386_reserve_resources(void);
+extern unsigned long __startup_64(unsigned long physaddr, struct boot_params *bp);
+extern unsigned long __startup_secondary_64(void);
+extern int early_make_pgtable(unsigned long address);
 
 #ifdef CONFIG_X86_INTEL_MID
 extern void x86_intel_mid_early_setup(void);

arch/x86/include/asm/sighandling.h

@@ -17,4 +17,9 @@ void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
 int setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
 		     struct pt_regs *regs, unsigned long mask);
 
+
+#ifdef CONFIG_X86_X32_ABI
+asmlinkage long sys32_x32_rt_sigreturn(void);
+#endif
+
 #endif /* _ASM_X86_SIGHANDLING_H */

arch/x86/include/asm/smp.h

@@ -148,6 +148,12 @@ void x86_idle_thread_init(unsigned int cpu, struct task_struct *idle);
 
 void smp_store_boot_cpu_info(void);
 void smp_store_cpu_info(int id);
+
+asmlinkage __visible void smp_reboot_interrupt(void);
+__visible void smp_reschedule_interrupt(struct pt_regs *regs);
+__visible void smp_call_function_interrupt(struct pt_regs *regs);
+__visible void smp_call_function_single_interrupt(struct pt_regs *r);
+
 #define cpu_physical_id(cpu)	per_cpu(x86_cpu_to_apicid, cpu)
 #define cpu_acpi_id(cpu)	per_cpu(x86_cpu_to_acpiid, cpu)
 

arch/x86/include/asm/trace/exceptions.h

@@ -45,6 +45,7 @@ DEFINE_PAGE_FAULT_EVENT(page_fault_user);
 DEFINE_PAGE_FAULT_EVENT(page_fault_kernel);
 
 #undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
 #define TRACE_INCLUDE_PATH .
 #define TRACE_INCLUDE_FILE exceptions
 #endif /*  _TRACE_PAGE_FAULT_H */

arch/x86/include/asm/trace/irq_vectors.h

@@ -389,6 +389,7 @@ TRACE_EVENT(vector_free_moved,
 #endif /* CONFIG_X86_LOCAL_APIC */
 
 #undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
 #define TRACE_INCLUDE_PATH .
 #define TRACE_INCLUDE_FILE irq_vectors
 #endif /*  _TRACE_IRQ_VECTORS_H */

arch/x86/include/asm/traps.h

@@ -61,34 +61,38 @@ asmlinkage void xen_machine_check(void);
 asmlinkage void xen_simd_coprocessor_error(void);
 #endif
 
-dotraplinkage void do_divide_error(struct pt_regs *, long);
-dotraplinkage void do_debug(struct pt_regs *, long);
-dotraplinkage void do_nmi(struct pt_regs *, long);
-dotraplinkage void do_int3(struct pt_regs *, long);
-dotraplinkage void do_overflow(struct pt_regs *, long);
-dotraplinkage void do_bounds(struct pt_regs *, long);
-dotraplinkage void do_invalid_op(struct pt_regs *, long);
-dotraplinkage void do_device_not_available(struct pt_regs *, long);
-dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *, long);
-dotraplinkage void do_invalid_TSS(struct pt_regs *, long);
-dotraplinkage void do_segment_not_present(struct pt_regs *, long);
-dotraplinkage void do_stack_segment(struct pt_regs *, long);
+dotraplinkage void do_divide_error(struct pt_regs *regs, long error_code);
+dotraplinkage void do_debug(struct pt_regs *regs, long error_code);
+dotraplinkage void do_nmi(struct pt_regs *regs, long error_code);
+dotraplinkage void do_int3(struct pt_regs *regs, long error_code);
+dotraplinkage void do_overflow(struct pt_regs *regs, long error_code);
+dotraplinkage void do_bounds(struct pt_regs *regs, long error_code);
+dotraplinkage void do_invalid_op(struct pt_regs *regs, long error_code);
+dotraplinkage void do_device_not_available(struct pt_regs *regs, long error_code);
+dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *regs, long error_code);
+dotraplinkage void do_invalid_TSS(struct pt_regs *regs, long error_code);
+dotraplinkage void do_segment_not_present(struct pt_regs *regs, long error_code);
+dotraplinkage void do_stack_segment(struct pt_regs *regs, long error_code);
 #ifdef CONFIG_X86_64
-dotraplinkage void do_double_fault(struct pt_regs *, long);
+dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code);
+asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs);
+asmlinkage __visible notrace
+struct bad_iret_stack *fixup_bad_iret(struct bad_iret_stack *s);
+void __init trap_init(void);
 #endif
-dotraplinkage void do_general_protection(struct pt_regs *, long);
-dotraplinkage void do_page_fault(struct pt_regs *, unsigned long);
-dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *, long);
-dotraplinkage void do_coprocessor_error(struct pt_regs *, long);
-dotraplinkage void do_alignment_check(struct pt_regs *, long);
+dotraplinkage void do_general_protection(struct pt_regs *regs, long error_code);
+dotraplinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code);
+dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *regs, long error_code);
+dotraplinkage void do_coprocessor_error(struct pt_regs *regs, long error_code);
+dotraplinkage void do_alignment_check(struct pt_regs *regs, long error_code);
 #ifdef CONFIG_X86_MCE
-dotraplinkage void do_machine_check(struct pt_regs *, long);
+dotraplinkage void do_machine_check(struct pt_regs *regs, long error_code);
 #endif
-dotraplinkage void do_simd_coprocessor_error(struct pt_regs *, long);
+dotraplinkage void do_simd_coprocessor_error(struct pt_regs *regs, long error_code);
 #ifdef CONFIG_X86_32
-dotraplinkage void do_iret_error(struct pt_regs *, long);
+dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code);
 #endif
-dotraplinkage void do_mce(struct pt_regs *, long);
+dotraplinkage void do_mce(struct pt_regs *regs, long error_code);
 
 static inline int get_si_code(unsigned long condition)
 {
@@ -104,11 +108,16 @@ extern int panic_on_unrecovered_nmi;
 
 void math_emulate(struct math_emu_info *);
 #ifndef CONFIG_X86_32
-asmlinkage void smp_thermal_interrupt(void);
-asmlinkage void smp_threshold_interrupt(void);
-asmlinkage void smp_deferred_error_interrupt(void);
+asmlinkage void smp_thermal_interrupt(struct pt_regs *regs);
+asmlinkage void smp_threshold_interrupt(struct pt_regs *regs);
+asmlinkage void smp_deferred_error_interrupt(struct pt_regs *regs);
 #endif
 
+void smp_apic_timer_interrupt(struct pt_regs *regs);
+void smp_spurious_interrupt(struct pt_regs *regs);
+void smp_error_interrupt(struct pt_regs *regs);
+asmlinkage void smp_irq_move_cleanup_interrupt(void);
+
 extern void ist_enter(struct pt_regs *regs);
 extern void ist_exit(struct pt_regs *regs);
 extern void ist_begin_non_atomic(struct pt_regs *regs);

arch/x86/include/asm/tsc.h

@@ -35,6 +35,7 @@ extern struct system_counterval_t convert_art_ns_to_tsc(u64 art_ns);
 
 extern void tsc_early_init(void);
 extern void tsc_init(void);
+extern unsigned long calibrate_delay_is_known(void);
 extern void mark_tsc_unstable(char *reason);
 extern int unsynchronized_tsc(void);
 extern int check_tsc_unstable(void);

arch/x86/kernel/acpi/boot.c

@@ -848,7 +848,7 @@ EXPORT_SYMBOL(acpi_unregister_ioapic);
 /**
  * acpi_ioapic_registered - Check whether IOAPIC assoicatied with @gsi_base
  *			    has been registered
- * @handle:	ACPI handle of the IOAPIC deivce
+ * @handle:	ACPI handle of the IOAPIC device
  * @gsi_base:	GSI base associated with the IOAPIC
  *
  * Assume caller holds some type of lock to serialize acpi_ioapic_registered()

arch/x86/kernel/aperture_64.c

@@ -264,18 +264,23 @@ static int __init parse_gart_mem(char *p)
 }
 early_param("gart_fix_e820", parse_gart_mem);
 
+/*
+ * With kexec/kdump, if the first kernel doesn't shut down the GART and the
+ * second kernel allocates a different GART region, there might be two
+ * overlapping GART regions present:
+ *
+ * - the first still used by the GART initialized in the first kernel.
+ * - (sub-)set of it used as normal RAM by the second kernel.
+ *
+ * which leads to memory corruptions and a kernel panic eventually.
+ *
+ * This can also happen if the BIOS has forgotten to mark the GART region
+ * as reserved.
+ *
+ * Try to update the e820 map to mark that new region as reserved.
+ */
 void __init early_gart_iommu_check(void)
 {
-	/*
-	 * in case it is enabled before, esp for kexec/kdump,
-	 * previous kernel already enable that. memset called
-	 * by allocate_aperture/__alloc_bootmem_nopanic cause restart.
-	 * or second kernel have different position for GART hole. and new
-	 * kernel could use hole as RAM that is still used by GART set by
-	 * first kernel
-	 * or BIOS forget to put that in reserved.
-	 * try to update e820 to make that region as reserved.
-	 */
 	u32 agp_aper_order = 0;
 	int i, fix, slot, valid_agp = 0;
 	u32 ctl;

arch/x86/kernel/apic/apic.c

@@ -44,6 +44,7 @@
 #include <asm/mpspec.h>
 #include <asm/i8259.h>
 #include <asm/proto.h>
+#include <asm/traps.h>
 #include <asm/apic.h>
 #include <asm/io_apic.h>
 #include <asm/desc.h>

arch/x86/kernel/apic/apic_flat_64.c

@@ -8,6 +8,7 @@
  * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
  * James Cleverdon.
  */
+#include <linux/acpi.h>
 #include <linux/errno.h>
 #include <linux/threads.h>
 #include <linux/cpumask.h>
@@ -16,13 +17,13 @@
 #include <linux/ctype.h>
 #include <linux/hardirq.h>
 #include <linux/export.h>
+
 #include <asm/smp.h>
-#include <asm/apic.h>
 #include <asm/ipi.h>
+#include <asm/apic.h>
+#include <asm/apic_flat_64.h>
 #include <asm/jailhouse_para.h>
 
-#include <linux/acpi.h>
-
 static struct apic apic_physflat;
 static struct apic apic_flat;
 

arch/x86/kernel/apic/vector.c

@@ -18,6 +18,7 @@
 #include <linux/slab.h>
 #include <asm/irqdomain.h>
 #include <asm/hw_irq.h>
+#include <asm/traps.h>
 #include <asm/apic.h>
 #include <asm/i8259.h>
 #include <asm/desc.h>

arch/x86/kernel/apic/x2apic_uv_x.c

@@ -1079,7 +1079,7 @@ late_initcall(uv_init_heartbeat);
 #endif /* !CONFIG_HOTPLUG_CPU */
 
 /* Direct Legacy VGA I/O traffic to designated IOH */
-int uv_set_vga_state(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags)
+static int uv_set_vga_state(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags)
 {
 	int domain, bus, rc;
 
@@ -1148,7 +1148,7 @@ static void get_mn(struct mn *mnp)
 	mnp->m_shift = mnp->m_val ? 64 - mnp->m_val : 0;
 }
 
-void __init uv_init_hub_info(struct uv_hub_info_s *hi)
+static void __init uv_init_hub_info(struct uv_hub_info_s *hi)
 {
 	union uvh_node_id_u node_id;
 	struct mn mn;

arch/x86/kernel/asm-offsets.c

@@ -29,7 +29,8 @@
 # include "asm-offsets_64.c"
 #endif
 
-void common(void) {
+static void __used common(void)
+{
 	BLANK();
 	OFFSET(TASK_threadsp, task_struct, thread.sp);
 #ifdef CONFIG_STACKPROTECTOR

arch/x86/kernel/check.c

@@ -9,6 +9,7 @@
 #include <linux/memblock.h>
 
 #include <asm/proto.h>
+#include <asm/setup.h>
 
 /*
  * Some BIOSes seem to corrupt the low 64k of memory during events
@@ -136,7 +137,7 @@ void __init setup_bios_corruption_check(void)
 }
 
 
-void check_for_bios_corruption(void)
+static void check_for_bios_corruption(void)
 {
 	int i;
 	int corruption = 0;

arch/x86/kernel/cpu/amd.c

@@ -15,6 +15,7 @@
 #include <asm/smp.h>
 #include <asm/pci-direct.h>
 #include <asm/delay.h>
+#include <asm/debugreg.h>
 
 #ifdef CONFIG_X86_64
 # include <asm/mmconfig.h>

arch/x86/kernel/cpu/aperfmperf.c

@@ -12,6 +12,7 @@
 #include <linux/ktime.h>
 #include <linux/math64.h>
 #include <linux/percpu.h>
+#include <linux/cpufreq.h>
 #include <linux/smp.h>
 
 #include "cpu.h"

arch/x86/kernel/cpu/bugs.c

@@ -32,6 +32,8 @@
 #include <asm/e820/api.h>
 #include <asm/hypervisor.h>
 
+#include "cpu.h"
+
 static void __init spectre_v2_select_mitigation(void);
 static void __init ssb_select_mitigation(void);
 static void __init l1tf_select_mitigation(void);

arch/x86/kernel/cpu/cacheinfo.c

@@ -17,6 +17,7 @@
 #include <linux/pci.h>
 
 #include <asm/cpufeature.h>
+#include <asm/cacheinfo.h>
 #include <asm/amd_nb.h>
 #include <asm/smp.h>
 

arch/x86/kernel/cpu/mce/amd.c

@@ -23,6 +23,7 @@
 #include <linux/string.h>
 
 #include <asm/amd_nb.h>
+#include <asm/traps.h>
 #include <asm/apic.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
@@ -99,7 +100,7 @@ static u32 smca_bank_addrs[MAX_NR_BANKS][NR_BLOCKS] __ro_after_init =
 	[0 ... MAX_NR_BANKS - 1] = { [0 ... NR_BLOCKS - 1] = -1 }
 };
 
-const char *smca_get_name(enum smca_bank_types t)
+static const char *smca_get_name(enum smca_bank_types t)
 {
 	if (t >= N_SMCA_BANK_TYPES)
 		return NULL;
@@ -824,7 +825,7 @@ static void __log_error(unsigned int bank, u64 status, u64 addr, u64 misc)
 	mce_log(&m);
 }
 
-asmlinkage __visible void __irq_entry smp_deferred_error_interrupt(void)
+asmlinkage __visible void __irq_entry smp_deferred_error_interrupt(struct pt_regs *regs)
 {
 	entering_irq();
 	trace_deferred_error_apic_entry(DEFERRED_ERROR_VECTOR);

arch/x86/kernel/cpu/mce/core.c

@@ -684,7 +684,7 @@ DEFINE_PER_CPU(unsigned, mce_poll_count);
  * errors here. However this would be quite problematic --
  * we would need to reimplement the Monarch handling and
  * it would mess up the exclusion between exception handler
- * and poll hander -- * so we skip this for now.
+ * and poll handler -- * so we skip this for now.
  * These cases should not happen anyways, or only when the CPU
  * is already totally * confused. In this case it's likely it will
  * not fully execute the machine check handler either.

arch/x86/kernel/cpu/mce/therm_throt.c

@@ -25,6 +25,7 @@
 #include <linux/cpu.h>
 
 #include <asm/processor.h>
+#include <asm/traps.h>
 #include <asm/apic.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
@@ -392,7 +393,7 @@ static void unexpected_thermal_interrupt(void)
 
 static void (*smp_thermal_vector)(void) = unexpected_thermal_interrupt;
 
-asmlinkage __visible void __irq_entry smp_thermal_interrupt(struct pt_regs *r)
+asmlinkage __visible void __irq_entry smp_thermal_interrupt(struct pt_regs *regs)
 {
 	entering_irq();
 	trace_thermal_apic_entry(THERMAL_APIC_VECTOR);

arch/x86/kernel/cpu/mce/threshold.c

@@ -6,6 +6,7 @@
 #include <linux/kernel.h>
 
 #include <asm/irq_vectors.h>
+#include <asm/traps.h>
 #include <asm/apic.h>
 #include <asm/mce.h>
 #include <asm/trace/irq_vectors.h>
@@ -20,7 +21,7 @@ static void default_threshold_interrupt(void)
 
 void (*mce_threshold_vector)(void) = default_threshold_interrupt;
 
-asmlinkage __visible void __irq_entry smp_threshold_interrupt(void)
+asmlinkage __visible void __irq_entry smp_threshold_interrupt(struct pt_regs *regs)
 {
 	entering_irq();
 	trace_threshold_apic_entry(THRESHOLD_APIC_VECTOR);

arch/x86/kernel/cpu/scattered.c

@@ -5,9 +5,10 @@
 #include <linux/cpu.h>
 
 #include <asm/pat.h>
+#include <asm/apic.h>
 #include <asm/processor.h>
 
-#include <asm/apic.h>
+#include "cpu.h"
 
 struct cpuid_bit {
 	u16 feature;

arch/x86/kernel/cpu/topology.c

@@ -10,6 +10,8 @@
 #include <asm/pat.h>
 #include <asm/processor.h>
 
+#include "cpu.h"
+
 /* leaf 0xb SMT level */
 #define SMT_LEVEL	0
 

arch/x86/kernel/crash.c

@@ -37,6 +37,7 @@
 #include <asm/reboot.h>
 #include <asm/virtext.h>
 #include <asm/intel_pt.h>
+#include <asm/crash.h>
 
 /* Used while preparing memory map entries for second kernel */
 struct crash_memmap_data {

arch/x86/kernel/crash_dump_64.c

@@ -62,7 +62,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf, size_t csize,
 
 /**
  * copy_oldmem_page_encrypted - same as copy_oldmem_page() above but ioremap the
- * memory with the encryption mask set to accomodate kdump on SME-enabled
+ * memory with the encryption mask set to accommodate kdump on SME-enabled
  * machines.
  */
 ssize_t copy_oldmem_page_encrypted(unsigned long pfn, char *buf, size_t csize,

arch/x86/kernel/devicetree.c

@@ -23,6 +23,7 @@
 #include <asm/pci_x86.h>
 #include <asm/setup.h>
 #include <asm/i8259.h>
+#include <asm/prom.h>
 
 __initdata u64 initial_dtb;
 char __initdata cmd_line[COMMAND_LINE_SIZE];

arch/x86/kernel/fpu/xstate.c

@@ -811,7 +811,7 @@ void fpu__resume_cpu(void)
  *
  * Note: does not work for compacted buffers.
  */
-void *__raw_xsave_addr(struct xregs_state *xsave, int xstate_feature_mask)
+static void *__raw_xsave_addr(struct xregs_state *xsave, int xstate_feature_mask)
 {
 	int feature_nr = fls64(xstate_feature_mask) - 1;
 

arch/x86/kernel/jailhouse.c

@@ -19,6 +19,7 @@
 #include <asm/pci_x86.h>
 #include <asm/reboot.h>
 #include <asm/setup.h>
+#include <asm/jailhouse_para.h>
 
 static __initdata struct jailhouse_setup_data setup_data;
 static unsigned int precalibrated_tsc_khz;

arch/x86/kernel/kprobes/core.c

@@ -751,7 +751,7 @@ STACK_FRAME_NON_STANDARD(kretprobe_trampoline);
 /*
  * Called from kretprobe_trampoline
  */
-__visible __used void *trampoline_handler(struct pt_regs *regs)
+static __used void *trampoline_handler(struct pt_regs *regs)
 {
 	struct kretprobe_instance *ri = NULL;
 	struct hlist_head *head, empty_rp;

arch/x86/kernel/process.c

@@ -22,6 +22,8 @@
 #include <linux/utsname.h>
 #include <linux/stackprotector.h>
 #include <linux/cpuidle.h>
+#include <linux/acpi.h>
+#include <linux/elf-randomize.h>
 #include <trace/events/power.h>
 #include <linux/hw_breakpoint.h>
 #include <asm/cpu.h>
@@ -39,6 +41,7 @@
 #include <asm/desc.h>
 #include <asm/prctl.h>
 #include <asm/spec-ctrl.h>
+#include <asm/proto.h>
 
 #include "process.h"
 
@@ -793,7 +796,7 @@ unsigned long get_wchan(struct task_struct *p)
 	unsigned long start, bottom, top, sp, fp, ip, ret = 0;
 	int count = 0;
 
-	if (!p || p == current || p->state == TASK_RUNNING)
+	if (p == current || p->state == TASK_RUNNING)
 		return 0;
 
 	if (!try_get_task_stack(p))

arch/x86/kernel/process_64.c

@@ -646,7 +646,7 @@ void set_personality_64bit(void)
 	/* TBD: overwrites user setup. Should have two bits.
 	   But 64bit processes have always behaved this way,
 	   so it's not too bad. The main problem is just that
-	   32bit childs are affected again. */
+	   32bit children are affected again. */
 	current->personality &= ~READ_IMPLIES_EXEC;
 }
 

arch/x86/kernel/quirks.c

@@ -7,6 +7,7 @@
 #include <linux/irq.h>
 
 #include <asm/hpet.h>
+#include <asm/setup.h>
 
 #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) && defined(CONFIG_PCI)
 

arch/x86/kernel/sysfb_efi.c

@@ -19,12 +19,15 @@
 
 #include <linux/dmi.h>
 #include <linux/err.h>
+#include <linux/efi.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/pci.h>
 #include <linux/screen_info.h>
 #include <video/vga.h>
+
+#include <asm/efi.h>
 #include <asm/sysfb.h>
 
 enum {

arch/x86/kernel/tracepoint.c

@@ -10,6 +10,8 @@
 
 #include <asm/hw_irq.h>
 #include <asm/desc.h>
+#include <asm/trace/exceptions.h>
+#include <asm/trace/irq_vectors.h>
 
 DEFINE_STATIC_KEY_FALSE(trace_pagefault_key);
 

arch/x86/kvm/vmx/vmx.c

@@ -2494,7 +2494,7 @@ static __init int alloc_kvm_area(void)
 		 * vmcs->revision_id to KVM_EVMCS_VERSION instead of
 		 * revision_id reported by MSR_IA32_VMX_BASIC.
 		 *
-		 * However, even though not explictly documented by
+		 * However, even though not explicitly documented by
 		 * TLFS, VMXArea passed as VMXON argument should
 		 * still be marked with revision_id reported by
 		 * physical CPU.

arch/x86/mm/pageattr.c

@@ -1712,7 +1712,7 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
 	} else if (!(in_flag & CPA_PAGES_ARRAY)) {
 		/*
 		 * in_flag of CPA_PAGES_ARRAY implies it is aligned.
-		 * No need to cehck in that case
+		 * No need to check in that case
 		 */
 		if (*addr & ~PAGE_MASK) {
 			*addr &= PAGE_MASK;

arch/x86/platform/ce4100/ce4100.c

@@ -84,7 +84,7 @@ static void ce4100_mem_serial_out(struct uart_port *p, int offset, int value)
 }
 
 static void ce4100_serial_fixup(int port, struct uart_port *up,
-	u32 *capabilites)
+	u32 *capabilities)
 {
 #ifdef CONFIG_EARLY_PRINTK
 	/*
@@ -111,7 +111,7 @@ static void ce4100_serial_fixup(int port, struct uart_port *up,
 	up->serial_in = ce4100_mem_serial_in;
 	up->serial_out = ce4100_mem_serial_out;
 
-	*capabilites |= (1 << 12);
+	*capabilities |= (1 << 12);
 }
 
 static __init void sdv_serial_fixup(void)

arch/x86/platform/intel-mid/device_libs/platform_bcm43xx.c

 /*
- * platform_bcm43xx.c: bcm43xx platform data initilization file
+ * platform_bcm43xx.c: bcm43xx platform data initialization file
  *
  * (C) Copyright 2016 Intel Corporation
  * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

arch/x86/platform/intel-mid/device_libs/platform_mrfld_spidev.c

 /*
- * spidev platform data initilization file
+ * spidev platform data initialization file
  *
  * (C) Copyright 2014, 2016 Intel Corporation
  * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

arch/x86/platform/intel-mid/device_libs/platform_pcal9555a.c

 /*
- * PCAL9555a platform data initilization file
+ * PCAL9555a platform data initialization file
  *
  * Copyright (C) 2016, Intel Corporation
  *

arch/x86/platform/intel/iosf_mbi.c

@@ -13,7 +13,7 @@
  *
  *
  * The IOSF-SB is a fabric bus available on Atom based SOC's that uses a
- * mailbox interface (MBI) to communicate with mutiple devices. This
+ * mailbox interface (MBI) to communicate with multiple devices. This
  * driver implements access to this interface for those platforms that can
  * enumerate the device using PCI.
  */

arch/x86/platform/olpc/olpc-xo1-sci.c

@@ -109,7 +109,7 @@ static void detect_lid_state(void)
 	 * the edge detector hookup on the gpio inputs on the geode is
 	 * odd, to say the least.  See http://dev.laptop.org/ticket/5703
 	 * for details, but in a nutshell:  we don't use the edge
-	 * detectors.  instead, we make use of an anomoly:  with the both
+	 * detectors.  instead, we make use of an anomaly:  with the both
 	 * edge detectors turned off, we still get an edge event on a
 	 * positive edge transition.  to take advantage of this, we use the
 	 * front-end inverter to ensure that that's the edge we're always

arch/x86/platform/uv/uv_nmi.c

@@ -560,7 +560,7 @@ static inline void uv_clear_nmi(int cpu)
 	}
 }
 
-/* Ping non-responding CPU's attemping to force them into the NMI handler */
+/* Ping non-responding CPU's attempting to force them into the NMI handler */
 static void uv_nmi_nr_cpus_ping(void)
 {
 	int cpu;

arch/x86/xen/setup.c

@@ -493,7 +493,7 @@ static unsigned long __init xen_foreach_remap_area(unsigned long nr_pages,
  * The remap information (which mfn remap to which pfn) is contained in the
  * to be remapped memory itself in a linked list anchored at xen_remap_mfn.
  * This scheme allows to remap the different chunks in arbitrary order while
- * the resulting mapping will be independant from the order.
+ * the resulting mapping will be independent from the order.
  */
 void __init xen_remap_memory(void)
 {

include/acpi/cppc_acpi.h

@@ -142,5 +142,8 @@ extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls);
 extern int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps);
 extern int acpi_get_psd_map(struct cppc_cpudata **);
 extern unsigned int cppc_get_transition_latency(int cpu);
+extern bool cpc_ffh_supported(void);
+extern int cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val);
+extern int cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val);
 
 #endif /* _CPPC_ACPI_H*/

include/linux/ftrace.h

@@ -420,6 +420,9 @@ enum {
 };
 
 void arch_ftrace_update_code(int command);
+void arch_ftrace_update_trampoline(struct ftrace_ops *ops);
+void *arch_ftrace_trampoline_func(struct ftrace_ops *ops, struct dyn_ftrace *rec);
+void arch_ftrace_trampoline_free(struct ftrace_ops *ops);
 
 struct ftrace_rec_iter;
 

include/linux/kexec.h

@@ -183,6 +183,7 @@ int kexec_purgatory_get_set_symbol(struct kimage *image, const char *name,
 				   bool get_value);
 void *kexec_purgatory_get_symbol_addr(struct kimage *image, const char *name);
 
+void * __weak arch_kexec_kernel_image_load(struct kimage *image);
 int __weak arch_kexec_apply_relocations_add(struct purgatory_info *pi,
 					    Elf_Shdr *section,
 					    const Elf_Shdr *relsec,

include/linux/kprobes.h

@@ -382,6 +382,9 @@ int enable_kprobe(struct kprobe *kp);
 
 void dump_kprobe(struct kprobe *kp);
 
+void *alloc_insn_page(void);
+void free_insn_page(void *page);
+
 #else /* !CONFIG_KPROBES: */
 
 static inline int kprobes_built_in(void)

include/linux/of_fdt.h

@@ -76,6 +76,7 @@ extern int early_init_dt_scan_memory(unsigned long node, const char *uname,
 extern int early_init_dt_scan_chosen_stdout(void);
 extern void early_init_fdt_scan_reserved_mem(void);
 extern void early_init_fdt_reserve_self(void);
+extern void __init early_init_dt_scan_chosen_arch(unsigned long node);
 extern void early_init_dt_add_memory_arch(u64 base, u64 size);
 extern int early_init_dt_mark_hotplug_memory_arch(u64 base, u64 size);
 extern int early_init_dt_reserve_memory_arch(phys_addr_t base, phys_addr_t size,

include/linux/ptrace.h

@@ -411,4 +411,5 @@ extern int task_current_syscall(struct task_struct *target, long *callno,
 				unsigned long args[6], unsigned int maxargs,
 				unsigned long *sp, unsigned long *pc);
 
+extern void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact);
 #endif