22 files changed, 426 insertions, 302 deletions

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 96d51bbc2bd4..dd61752f4c96 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -45,7 +45,6 @@ obj-y			+= head$(BITS).o
 obj-y			+= ebda.o
 obj-y			+= platform-quirks.o
 obj-y			+= process_$(BITS).o signal.o signal_$(BITS).o
-obj-$(CONFIG_COMPAT)	+= signal_compat.o
 obj-y			+= traps.o idt.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
 obj-y			+= time.o ioport.o dumpstack.o nmi.o
 obj-$(CONFIG_MODIFY_LDT_SYSCALL)	+= ldt.o
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 907cc98b1938..1c38174b5f01 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -188,6 +188,17 @@ static int acpi_register_lapic(int id, u32 acpiid, u8 enabled)
 	return cpu;
 }
 
+static bool __init acpi_is_processor_usable(u32 lapic_flags)
+{
+	if (lapic_flags & ACPI_MADT_ENABLED)
+		return true;
+
+	if (acpi_support_online_capable && (lapic_flags & ACPI_MADT_ONLINE_CAPABLE))
+		return true;
+
+	return false;
+}
+
 static int __init
 acpi_parse_x2apic(union acpi_subtable_headers *header, const unsigned long end)
 {
@@ -212,6 +223,10 @@ acpi_parse_x2apic(union acpi_subtable_headers *header, const unsigned long end)
 	if (apic_id == 0xffffffff)
 		return 0;
 
+	/* don't register processors that cannot be onlined */
+	if (!acpi_is_processor_usable(processor->lapic_flags))
+		return 0;
+
 	/*
 	 * We need to register disabled CPU as well to permit
 	 * counting disabled CPUs. This allows us to size
@@ -250,9 +265,7 @@ acpi_parse_lapic(union acpi_subtable_headers * header, const unsigned long end)
 		return 0;
 
 	/* don't register processors that can not be onlined */
-	if (acpi_support_online_capable &&
-	    !(processor->lapic_flags & ACPI_MADT_ENABLED) &&
-	    !(processor->lapic_flags & ACPI_MADT_ONLINE_CAPABLE))
+	if (!acpi_is_processor_usable(processor->lapic_flags))
 		return 0;
 
 	/*
@@ -1840,23 +1853,23 @@ early_param("acpi_sci", setup_acpi_sci);
 
 int __acpi_acquire_global_lock(unsigned int *lock)
 {
-	unsigned int old, new, val;
+	unsigned int old, new;
+
+	old = READ_ONCE(*lock);
 	do {
-		old = *lock;
 		new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
-		val = cmpxchg(lock, old, new);
-	} while (unlikely (val != old));
+	} while (!try_cmpxchg(lock, &old, new));
 	return ((new & 0x3) < 3) ? -1 : 0;
 }
 
 int __acpi_release_global_lock(unsigned int *lock)
 {
-	unsigned int old, new, val;
+	unsigned int old, new;
+
+	old = READ_ONCE(*lock);
 	do {
-		old = *lock;
 		new = old & ~0x3;
-		val = cmpxchg(lock, old, new);
-	} while (unlikely (val != old));
+	} while (!try_cmpxchg(lock, &old, new));
 	return old & 0x1;
 }
 
diff --git a/arch/x86/kernel/cpu/aperfmperf.c b/arch/x86/kernel/cpu/aperfmperf.c
index 1f60a2b27936..fdbb5f07448f 100644
--- a/arch/x86/kernel/cpu/aperfmperf.c
+++ b/arch/x86/kernel/cpu/aperfmperf.c
@@ -330,7 +330,16 @@ static void __init bp_init_freq_invariance(void)
 
 static void disable_freq_invariance_workfn(struct work_struct *work)
 {
+	int cpu;
+
 	static_branch_disable(&arch_scale_freq_key);
+
+	/*
+	 * Set arch_freq_scale to a default value on all cpus
+	 * This negates the effect of scaling
+	 */
+	for_each_possible_cpu(cpu)
+		per_cpu(arch_freq_scale, cpu) = SCHED_CAPACITY_SCALE;
 }
 
 static DECLARE_WORK(disable_freq_invariance_work,
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index bca0bd8f4846..85168740f76a 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -86,7 +86,7 @@ void update_spec_ctrl_cond(u64 val)
 		wrmsrl(MSR_IA32_SPEC_CTRL, val);
 }
 
-u64 spec_ctrl_current(void)
+noinstr u64 spec_ctrl_current(void)
 {
 	return this_cpu_read(x86_spec_ctrl_current);
 }
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 9cfca3d7d0e2..f3cc7699e1e1 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1256,6 +1256,8 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = {
 #define MMIO_SBDS	BIT(2)
 /* CPU is affected by RETbleed, speculating where you would not expect it */
 #define RETBLEED	BIT(3)
+/* CPU is affected by SMT (cross-thread) return predictions */
+#define SMT_RSB		BIT(4)
 
 static const struct x86_cpu_id cpu_vuln_blacklist[] __initconst = {
 	VULNBL_INTEL_STEPPINGS(IVYBRIDGE,	X86_STEPPING_ANY,		SRBDS),
@@ -1287,8 +1289,8 @@ static const struct x86_cpu_id cpu_vuln_blacklist[] __initconst = {
 
 	VULNBL_AMD(0x15, RETBLEED),
 	VULNBL_AMD(0x16, RETBLEED),
-	VULNBL_AMD(0x17, RETBLEED),
-	VULNBL_HYGON(0x18, RETBLEED),
+	VULNBL_AMD(0x17, RETBLEED | SMT_RSB),
+	VULNBL_HYGON(0x18, RETBLEED | SMT_RSB),
 	{}
 };
 
@@ -1406,6 +1408,9 @@ static void __init cpu_set_bug_bits(struct cpuinfo_x86 *c)
 	    !(ia32_cap & ARCH_CAP_PBRSB_NO))
 		setup_force_cpu_bug(X86_BUG_EIBRS_PBRSB);
 
+	if (cpu_matches(cpu_vuln_blacklist, SMT_RSB))
+		setup_force_cpu_bug(X86_BUG_SMT_RSB);
+
 	if (cpu_matches(cpu_vuln_whitelist, NO_MELTDOWN))
 		return;
 
diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c
index efe0c30d3a12..77538abeb72a 100644
--- a/arch/x86/kernel/cpu/resctrl/monitor.c
+++ b/arch/x86/kernel/cpu/resctrl/monitor.c
@@ -146,6 +146,30 @@ static inline struct rmid_entry *__rmid_entry(u32 rmid)
 	return entry;
 }
 
+static int __rmid_read(u32 rmid, enum resctrl_event_id eventid, u64 *val)
+{
+	u64 msr_val;
+
+	/*
+	 * As per the SDM, when IA32_QM_EVTSEL.EvtID (bits 7:0) is configured
+	 * with a valid event code for supported resource type and the bits
+	 * IA32_QM_EVTSEL.RMID (bits 41:32) are configured with valid RMID,
+	 * IA32_QM_CTR.data (bits 61:0) reports the monitored data.
+	 * IA32_QM_CTR.Error (bit 63) and IA32_QM_CTR.Unavailable (bit 62)
+	 * are error bits.
+	 */
+	wrmsr(MSR_IA32_QM_EVTSEL, eventid, rmid);
+	rdmsrl(MSR_IA32_QM_CTR, msr_val);
+
+	if (msr_val & RMID_VAL_ERROR)
+		return -EIO;
+	if (msr_val & RMID_VAL_UNAVAIL)
+		return -EINVAL;
+
+	*val = msr_val;
+	return 0;
+}
+
 static struct arch_mbm_state *get_arch_mbm_state(struct rdt_hw_domain *hw_dom,
 						 u32 rmid,
 						 enum resctrl_event_id eventid)
@@ -172,8 +196,12 @@ void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_domain *d,
 	struct arch_mbm_state *am;
 
 	am = get_arch_mbm_state(hw_dom, rmid, eventid);
-	if (am)
+	if (am) {
 		memset(am, 0, sizeof(*am));
+
+		/* Record any initial, non-zero count value. */
+		__rmid_read(rmid, eventid, &am->prev_msr);
+	}
 }
 
 static u64 mbm_overflow_count(u64 prev_msr, u64 cur_msr, unsigned int width)
@@ -191,25 +219,14 @@ int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain *d,
 	struct rdt_hw_domain *hw_dom = resctrl_to_arch_dom(d);
 	struct arch_mbm_state *am;
 	u64 msr_val, chunks;
+	int ret;
 
 	if (!cpumask_test_cpu(smp_processor_id(), &d->cpu_mask))
 		return -EINVAL;
 
-	/*
-	 * As per the SDM, when IA32_QM_EVTSEL.EvtID (bits 7:0) is configured
-	 * with a valid event code for supported resource type and the bits
-	 * IA32_QM_EVTSEL.RMID (bits 41:32) are configured with valid RMID,
-	 * IA32_QM_CTR.data (bits 61:0) reports the monitored data.
-	 * IA32_QM_CTR.Error (bit 63) and IA32_QM_CTR.Unavailable (bit 62)
-	 * are error bits.
-	 */
-	wrmsr(MSR_IA32_QM_EVTSEL, eventid, rmid);
-	rdmsrl(MSR_IA32_QM_CTR, msr_val);
-
-	if (msr_val & RMID_VAL_ERROR)
-		return -EIO;
-	if (msr_val & RMID_VAL_UNAVAIL)
-		return -EINVAL;
+	ret = __rmid_read(rmid, eventid, &msr_val);
+	if (ret)
+		return ret;
 
 	am = get_arch_mbm_state(hw_dom, rmid, eventid);
 	if (am) {
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index e5a48f05e787..5993da21d822 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -580,8 +580,10 @@ static int __rdtgroup_move_task(struct task_struct *tsk,
 	/*
 	 * Ensure the task's closid and rmid are written before determining if
 	 * the task is current that will decide if it will be interrupted.
+	 * This pairs with the full barrier between the rq->curr update and
+	 * resctrl_sched_in() during context switch.
 	 */
-	barrier();
+	smp_mb();
 
 	/*
 	 * By now, the task's closid and rmid are set. If the task is current
@@ -2402,6 +2404,14 @@ static void rdt_move_group_tasks(struct rdtgroup *from, struct rdtgroup *to,
 			WRITE_ONCE(t->rmid, to->mon.rmid);
 
 			/*
+			 * Order the closid/rmid stores above before the loads
+			 * in task_curr(). This pairs with the full barrier
+			 * between the rq->curr update and resctrl_sched_in()
+			 * during context switch.
+			 */
+			smp_mb();
+
+			/*
 			 * If the task is on a CPU, set the CPU in the mask.
 			 * The detection is inaccurate as tasks might move or
 			 * schedule before the smp function call takes place.
diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 02039ec3597d..11f83d07925e 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -143,7 +143,7 @@ static __init int parse_no_stealacc(char *arg)
 }
 early_param("no-steal-acc", parse_no_stealacc);
 
-static unsigned long long notrace vmware_sched_clock(void)
+static noinstr u64 vmware_sched_clock(void)
 {
 	unsigned long long ns;
 
diff --git a/arch/x86/kernel/fpu/context.h b/arch/x86/kernel/fpu/context.h
index 958accf2ccf0..9fcfa5c4dad7 100644
--- a/arch/x86/kernel/fpu/context.h
+++ b/arch/x86/kernel/fpu/context.h
@@ -57,7 +57,7 @@ static inline void fpregs_restore_userregs(void)
 	struct fpu *fpu = &current->thread.fpu;
 	int cpu = smp_processor_id();
 
-	if (WARN_ON_ONCE(current->flags & PF_KTHREAD))
+	if (WARN_ON_ONCE(current->flags & (PF_KTHREAD | PF_IO_WORKER)))
 		return;
 
 	if (!fpregs_state_valid(fpu, cpu)) {
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 9baa89a8877d..caf33486dc5e 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -426,7 +426,7 @@ void kernel_fpu_begin_mask(unsigned int kfpu_mask)
 
 	this_cpu_write(in_kernel_fpu, true);
 
-	if (!(current->flags & PF_KTHREAD) &&
+	if (!(current->flags & (PF_KTHREAD | PF_IO_WORKER)) &&
 	    !test_thread_flag(TIF_NEED_FPU_LOAD)) {
 		set_thread_flag(TIF_NEED_FPU_LOAD);
 		save_fpregs_to_fpstate(&current->thread.fpu);
@@ -853,12 +853,12 @@ int fpu__exception_code(struct fpu *fpu, int trap_nr)
  * Initialize register state that may prevent from entering low-power idle.
  * This function will be invoked from the cpuidle driver only when needed.
  */
-void fpu_idle_fpregs(void)
+noinstr void fpu_idle_fpregs(void)
 {
 	/* Note: AMX_TILE being enabled implies XGETBV1 support */
 	if (cpu_feature_enabled(X86_FEATURE_AMX_TILE) &&
 	    (xfeatures_in_use() & XFEATURE_MASK_XTILE)) {
 		tile_release();
-		fpregs_deactivate(&current->thread.fpu);
+		__this_cpu_write(fpu_fpregs_owner_ctx, NULL);
 	}
 }
diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c
index 3aa5304200c5..4d8aff05a509 100644
--- a/arch/x86/kernel/i8259.c
+++ b/arch/x86/kernel/i8259.c
@@ -114,6 +114,7 @@ static void make_8259A_irq(unsigned int irq)
 	disable_irq_nosync(irq);
 	io_apic_irqs &= ~(1<<irq);
 	irq_set_chip_and_handler(irq, &i8259A_chip, handle_level_irq);
+	irq_set_status_flags(irq, IRQ_LEVEL);
 	enable_irq(irq);
 	lapic_assign_legacy_vector(irq, true);
 }
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index beb1bada1b0a..c683666876f1 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -65,8 +65,10 @@ void __init init_ISA_irqs(void)
 
 	legacy_pic->init(0);
 
-	for (i = 0; i < nr_legacy_irqs(); i++)
+	for (i = 0; i < nr_legacy_irqs(); i++) {
 		irq_set_chip_and_handler(i, chip, handle_level_irq);
+		irq_set_status_flags(i, IRQ_LEVEL);
+	}
 }
 
 void __init init_IRQ(void)
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index b36f3c367cb2..754da3b226f9 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -625,7 +625,7 @@ static int prepare_emulation(struct kprobe *p, struct insn *insn)
 		/* 1 byte conditional jump */
 		p->ainsn.emulate_op = kprobe_emulate_jcc;
 		p->ainsn.jcc.type = opcode & 0xf;
-		p->ainsn.rel32 = *(char *)insn->immediate.bytes;
+		p->ainsn.rel32 = insn->immediate.value;
 		break;
 	case 0x0f:
 		opcode = insn->opcode.bytes[1];
@@ -659,17 +659,19 @@ static int prepare_emulation(struct kprobe *p, struct insn *insn)
 		 * is determined by the MOD/RM byte.
 		 */
 		opcode = insn->modrm.bytes[0];
-		if ((opcode & 0x30) == 0x10) {
-			if ((opcode & 0x8) == 0x8)
-				return -EOPNOTSUPP;	/* far call */
-			/* call absolute, indirect */
+		switch (X86_MODRM_REG(opcode)) {
+		case 0b010:	/* FF /2, call near, absolute indirect */
 			p->ainsn.emulate_op = kprobe_emulate_call_indirect;
-		} else if ((opcode & 0x30) == 0x20) {
-			if ((opcode & 0x8) == 0x8)
-				return -EOPNOTSUPP;	/* far jmp */
-			/* jmp near absolute indirect */
+			break;
+		case 0b100:	/* FF /4, jmp near, absolute indirect */
 			p->ainsn.emulate_op = kprobe_emulate_jmp_indirect;
-		} else
+			break;
+		case 0b011:	/* FF /3, call far, absolute indirect */
+		case 0b101:	/* FF /5, jmp far, absolute indirect */
+			return -EOPNOTSUPP;
+		}
+
+		if (!p->ainsn.emulate_op)
 			break;
 
 		if (insn->addr_bytes != sizeof(unsigned long))
@@ -990,20 +992,6 @@ int kprobe_int3_handler(struct pt_regs *regs)
 			kprobe_post_process(p, regs, kcb);
 			return 1;
 		}
-	}
-
-	if (*addr != INT3_INSN_OPCODE) {
-		/*
-		 * The breakpoint instruction was removed right
-		 * after we hit it.  Another cpu has removed
-		 * either a probepoint or a debugger breakpoint
-		 * at this address.  In either case, no further
-		 * handling of this interrupt is appropriate.
-		 * Back up over the (now missing) int3 and run
-		 * the original instruction.
-		 */
-		regs->ip = (unsigned long)addr;
-		return 1;
 	} /* else: not a kprobe fault; let the kernel handle it */
 
 	return 0;
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index 16333ba1904b..0f35d44c56fe 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -71,12 +71,12 @@ static int kvm_set_wallclock(const struct timespec64 *now)
 	return -ENODEV;
 }
 
-static u64 kvm_clock_read(void)
+static noinstr u64 kvm_clock_read(void)
 {
 	u64 ret;
 
 	preempt_disable_notrace();
-	ret = pvclock_clocksource_read(this_cpu_pvti());
+	ret = pvclock_clocksource_read_nowd(this_cpu_pvti());
 	preempt_enable_notrace();
 	return ret;
 }
@@ -86,7 +86,7 @@ static u64 kvm_clock_get_cycles(struct clocksource *cs)
 	return kvm_clock_read();
 }
 
-static u64 kvm_sched_clock_read(void)
+static noinstr u64 kvm_sched_clock_read(void)
 {
 	return kvm_clock_read() - kvm_sched_clock_offset;
 }
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 327757afb027..5bf4f0b2f35d 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -216,6 +216,11 @@ static noinstr void pv_native_set_debugreg(int regno, unsigned long val)
 	native_set_debugreg(regno, val);
 }
 
+noinstr void pv_native_wbinvd(void)
+{
+	native_wbinvd();
+}
+
 static noinstr void pv_native_irq_enable(void)
 {
 	native_irq_enable();
@@ -225,6 +230,11 @@ static noinstr void pv_native_irq_disable(void)
 {
 	native_irq_disable();
 }
+
+static noinstr void pv_native_safe_halt(void)
+{
+	native_safe_halt();
+}
 #endif
 
 enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
@@ -256,7 +266,7 @@ struct paravirt_patch_template pv_ops = {
 	.cpu.read_cr0		= native_read_cr0,
 	.cpu.write_cr0		= native_write_cr0,
 	.cpu.write_cr4		= native_write_cr4,
-	.cpu.wbinvd		= native_wbinvd,
+	.cpu.wbinvd		= pv_native_wbinvd,
 	.cpu.read_msr		= native_read_msr,
 	.cpu.write_msr		= native_write_msr,
 	.cpu.read_msr_safe	= native_read_msr_safe,
@@ -290,7 +300,7 @@ struct paravirt_patch_template pv_ops = {
 	.irq.save_fl		= __PV_IS_CALLEE_SAVE(native_save_fl),
 	.irq.irq_disable	= __PV_IS_CALLEE_SAVE(pv_native_irq_disable),
 	.irq.irq_enable		= __PV_IS_CALLEE_SAVE(pv_native_irq_enable),
-	.irq.safe_halt		= native_safe_halt,
+	.irq.safe_halt		= pv_native_safe_halt,
 	.irq.halt		= native_halt,
 #endif /* CONFIG_PARAVIRT_XXL */
 
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 40d156a31676..e57cd31bfec4 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -24,6 +24,7 @@
 #include <linux/cpuidle.h>
 #include <linux/acpi.h>
 #include <linux/elf-randomize.h>
+#include <linux/static_call.h>
 #include <trace/events/power.h>
 #include <linux/hw_breakpoint.h>
 #include <asm/cpu.h>
@@ -694,7 +695,24 @@ void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p)
 unsigned long boot_option_idle_override = IDLE_NO_OVERRIDE;
 EXPORT_SYMBOL(boot_option_idle_override);
 
-static void (*x86_idle)(void);
+/*
+ * We use this if we don't have any better idle routine..
+ */
+void __cpuidle default_idle(void)
+{
+	raw_safe_halt();
+	raw_local_irq_disable();
+}
+#if defined(CONFIG_APM_MODULE) || defined(CONFIG_HALTPOLL_CPUIDLE_MODULE)
+EXPORT_SYMBOL(default_idle);
+#endif
+
+DEFINE_STATIC_CALL_NULL(x86_idle, default_idle);
+
+static bool x86_idle_set(void)
+{
+	return !!static_call_query(x86_idle);
+}
 
 #ifndef CONFIG_SMP
 static inline void play_dead(void)
@@ -717,28 +735,17 @@ void arch_cpu_idle_dead(void)
 /*
  * Called from the generic idle code.
  */
-void arch_cpu_idle(void)
-{
-	x86_idle();
-}
-
-/*
- * We use this if we don't have any better idle routine..
- */
-void __cpuidle default_idle(void)
+void __cpuidle arch_cpu_idle(void)
 {
-	raw_safe_halt();
+	static_call(x86_idle)();
 }
-#if defined(CONFIG_APM_MODULE) || defined(CONFIG_HALTPOLL_CPUIDLE_MODULE)
-EXPORT_SYMBOL(default_idle);
-#endif
 
 #ifdef CONFIG_XEN
 bool xen_set_default_idle(void)
 {
-	bool ret = !!x86_idle;
+	bool ret = x86_idle_set();
 
-	x86_idle = default_idle;
+	static_call_update(x86_idle, default_idle);
 
 	return ret;
 }
@@ -800,13 +807,7 @@ static void amd_e400_idle(void)
 
 	default_idle();
 
-	/*
-	 * The switch back from broadcast mode needs to be called with
-	 * interrupts disabled.
-	 */
-	raw_local_irq_disable();
 	tick_broadcast_exit();
-	raw_local_irq_enable();
 }
 
 /*
@@ -864,12 +865,10 @@ static __cpuidle void mwait_idle(void)
 		}
 
 		__monitor((void *)&current_thread_info()->flags, 0, 0);
-		if (!need_resched())
+		if (!need_resched()) {
 			__sti_mwait(0, 0);
-		else
-			raw_local_irq_enable();
-	} else {
-		raw_local_irq_enable();
+			raw_local_irq_disable();
+		}
 	}
 	__current_clr_polling();
 }
@@ -880,20 +879,20 @@ void select_idle_routine(const struct cpuinfo_x86 *c)
 	if (boot_option_idle_override == IDLE_POLL && smp_num_siblings > 1)
 		pr_warn_once("WARNING: polling idle and HT enabled, performance may degrade\n");
 #endif
-	if (x86_idle || boot_option_idle_override == IDLE_POLL)
+	if (x86_idle_set() || boot_option_idle_override == IDLE_POLL)
 		return;
 
 	if (boot_cpu_has_bug(X86_BUG_AMD_E400)) {
 		pr_info("using AMD E400 aware idle routine\n");
-		x86_idle = amd_e400_idle;
+		static_call_update(x86_idle, amd_e400_idle);
 	} else if (prefer_mwait_c1_over_halt(c)) {
 		pr_info("using mwait in idle threads\n");
-		x86_idle = mwait_idle;
+		static_call_update(x86_idle, mwait_idle);
 	} else if (cpu_feature_enabled(X86_FEATURE_TDX_GUEST)) {
 		pr_info("using TDX aware idle routine\n");
-		x86_idle = tdx_safe_halt;
+		static_call_update(x86_idle, tdx_safe_halt);
 	} else
-		x86_idle = default_idle;
+		static_call_update(x86_idle, default_idle);
 }
 
 void amd_e400_c1e_apic_setup(void)
@@ -946,7 +945,7 @@ static int __init idle_setup(char *str)
 		 * To continue to load the CPU idle driver, don't touch
 		 * the boot_option_idle_override.
 		 */
-		x86_idle = default_idle;
+		static_call_update(x86_idle, default_idle);
 		boot_option_idle_override = IDLE_HALT;
 	} else if (!strcmp(str, "nomwait")) {
 		/*
diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c
index eda37df016f0..56acf53a782a 100644
--- a/arch/x86/kernel/pvclock.c
+++ b/arch/x86/kernel/pvclock.c
@@ -64,7 +64,8 @@ u8 pvclock_read_flags(struct pvclock_vcpu_time_info *src)
 	return flags & valid_flags;
 }
 
-u64 pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
+static __always_inline
+u64 __pvclock_clocksource_read(struct pvclock_vcpu_time_info *src, bool dowd)
 {
 	unsigned version;
 	u64 ret;
@@ -77,7 +78,7 @@ u64 pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
 		flags = src->flags;
 	} while (pvclock_read_retry(src, version));
 
-	if (unlikely((flags & PVCLOCK_GUEST_STOPPED) != 0)) {
+	if (dowd && unlikely((flags & PVCLOCK_GUEST_STOPPED) != 0)) {
 		src->flags &= ~PVCLOCK_GUEST_STOPPED;
 		pvclock_touch_watchdogs();
 	}
@@ -100,16 +101,25 @@ u64 pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
 	 * updating at the same time, and one of them could be slightly behind,
 	 * making the assumption that last_value always go forward fail to hold.
 	 */
-	last = atomic64_read(&last_value);
+	last = arch_atomic64_read(&last_value);
 	do {
-		if (ret < last)
+		if (ret <= last)
 			return last;
-		last = atomic64_cmpxchg(&last_value, last, ret);
-	} while (unlikely(last != ret));
+	} while (!arch_atomic64_try_cmpxchg(&last_value, &last, ret));
 
 	return ret;
 }
 
+u64 pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
+{
+	return __pvclock_clocksource_read(src, true);
+}
+
+noinstr u64 pvclock_clocksource_read_nowd(struct pvclock_vcpu_time_info *src)
+{
+	return __pvclock_clocksource_read(src, false);
+}
+
 void pvclock_read_wallclock(struct pvclock_wall_clock *wall_clock,
 			    struct pvclock_vcpu_time_info *vcpu_time,
 			    struct timespec64 *ts)
diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c
index 2553136cf39b..f042dcdf1f16 100644
--- a/arch/x86/kernel/signal_32.c
+++ b/arch/x86/kernel/signal_32.c
@@ -54,12 +54,14 @@ static inline void reload_segments(struct sigcontext_32 *sc)
 }
 
 #define sigset32_t			compat_sigset_t
+#define siginfo32_t			compat_siginfo_t
 #define restore_altstack32		compat_restore_altstack
 #define unsafe_save_altstack32		unsafe_compat_save_altstack
 
 #else
 
 #define sigset32_t			sigset_t
+#define siginfo32_t			siginfo_t
 #define __NR_ia32_sigreturn		__NR_sigreturn
 #define __NR_ia32_rt_sigreturn		__NR_rt_sigreturn
 #define restore_altstack32		restore_altstack
@@ -377,3 +379,128 @@ Efault:
 	user_access_end();
 	return -EFAULT;
 }
+
+/*
+ * The siginfo_t structure and handing code is very easy
+ * to break in several ways.  It must always be updated when new
+ * updates are made to the main siginfo_t, and
+ * copy_siginfo_to_user32() must be updated when the
+ * (arch-independent) copy_siginfo_to_user() is updated.
+ *
+ * It is also easy to put a new member in the siginfo_t
+ * which has implicit alignment which can move internal structure
+ * alignment around breaking the ABI.  This can happen if you,
+ * for instance, put a plain 64-bit value in there.
+ */
+
+/*
+* If adding a new si_code, there is probably new data in
+* the siginfo.  Make sure folks bumping the si_code
+* limits also have to look at this code.  Make sure any
+* new fields are handled in copy_siginfo_to_user32()!
+*/
+static_assert(NSIGILL  == 11);
+static_assert(NSIGFPE  == 15);
+static_assert(NSIGSEGV == 9);
+static_assert(NSIGBUS  == 5);
+static_assert(NSIGTRAP == 6);
+static_assert(NSIGCHLD == 6);
+static_assert(NSIGSYS  == 2);
+
+/* This is part of the ABI and can never change in size: */
+static_assert(sizeof(siginfo32_t) == 128);
+
+/* This is a part of the ABI and can never change in alignment */
+static_assert(__alignof__(siginfo32_t) == 4);
+
+/*
+* The offsets of all the (unioned) si_fields are fixed
+* in the ABI, of course.  Make sure none of them ever
+* move and are always at the beginning:
+*/
+static_assert(offsetof(siginfo32_t, _sifields) == 3 * sizeof(int));
+
+static_assert(offsetof(siginfo32_t, si_signo) == 0);
+static_assert(offsetof(siginfo32_t, si_errno) == 4);
+static_assert(offsetof(siginfo32_t, si_code)  == 8);
+
+/*
+* Ensure that the size of each si_field never changes.
+* If it does, it is a sign that the
+* copy_siginfo_to_user32() code below needs to updated
+* along with the size in the CHECK_SI_SIZE().
+*
+* We repeat this check for both the generic and compat
+* siginfos.
+*
+* Note: it is OK for these to grow as long as the whole
+* structure stays within the padding size (checked
+* above).
+*/
+
+#define CHECK_SI_OFFSET(name)						\
+	static_assert(offsetof(siginfo32_t, _sifields) ==		\
+		      offsetof(siginfo32_t, _sifields.name))
+
+#define CHECK_SI_SIZE(name, size)					\
+	static_assert(sizeof_field(siginfo32_t, _sifields.name) == size)
+
+CHECK_SI_OFFSET(_kill);
+CHECK_SI_SIZE  (_kill, 2*sizeof(int));
+static_assert(offsetof(siginfo32_t, si_pid) == 0xC);
+static_assert(offsetof(siginfo32_t, si_uid) == 0x10);
+
+CHECK_SI_OFFSET(_timer);
+#ifdef CONFIG_COMPAT
+/* compat_siginfo_t doesn't have si_sys_private */
+CHECK_SI_SIZE  (_timer, 3*sizeof(int));
+#else
+CHECK_SI_SIZE  (_timer, 4*sizeof(int));
+#endif
+static_assert(offsetof(siginfo32_t, si_tid)     == 0x0C);
+static_assert(offsetof(siginfo32_t, si_overrun) == 0x10);
+static_assert(offsetof(siginfo32_t, si_value)   == 0x14);
+
+CHECK_SI_OFFSET(_rt);
+CHECK_SI_SIZE  (_rt, 3*sizeof(int));
+static_assert(offsetof(siginfo32_t, si_pid)   == 0x0C);
+static_assert(offsetof(siginfo32_t, si_uid)   == 0x10);
+static_assert(offsetof(siginfo32_t, si_value) == 0x14);
+
+CHECK_SI_OFFSET(_sigchld);
+CHECK_SI_SIZE  (_sigchld, 5*sizeof(int));
+static_assert(offsetof(siginfo32_t, si_pid)    == 0x0C);
+static_assert(offsetof(siginfo32_t, si_uid)    == 0x10);
+static_assert(offsetof(siginfo32_t, si_status) == 0x14);
+static_assert(offsetof(siginfo32_t, si_utime)  == 0x18);
+static_assert(offsetof(siginfo32_t, si_stime)  == 0x1C);
+
+CHECK_SI_OFFSET(_sigfault);
+CHECK_SI_SIZE  (_sigfault, 4*sizeof(int));
+static_assert(offsetof(siginfo32_t, si_addr) == 0x0C);
+
+static_assert(offsetof(siginfo32_t, si_trapno) == 0x10);
+
+static_assert(offsetof(siginfo32_t, si_addr_lsb) == 0x10);
+
+static_assert(offsetof(siginfo32_t, si_lower) == 0x14);
+static_assert(offsetof(siginfo32_t, si_upper) == 0x18);
+
+static_assert(offsetof(siginfo32_t, si_pkey) == 0x14);
+
+static_assert(offsetof(siginfo32_t, si_perf_data) == 0x10);
+static_assert(offsetof(siginfo32_t, si_perf_type) == 0x14);
+static_assert(offsetof(siginfo32_t, si_perf_flags) == 0x18);
+
+CHECK_SI_OFFSET(_sigpoll);
+CHECK_SI_SIZE  (_sigpoll, 2*sizeof(int));
+static_assert(offsetof(siginfo32_t, si_band) == 0x0C);
+static_assert(offsetof(siginfo32_t, si_fd)   == 0x10);
+
+CHECK_SI_OFFSET(_sigsys);
+CHECK_SI_SIZE  (_sigsys, 3*sizeof(int));
+static_assert(offsetof(siginfo32_t, si_call_addr) == 0x0C);
+static_assert(offsetof(siginfo32_t, si_syscall)   == 0x10);
+static_assert(offsetof(siginfo32_t, si_arch)      == 0x14);
+
+/* any new si_fields should be added here */
diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index ff9c55064223..13a1e6083837 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -381,3 +381,130 @@ badframe:
 	return 0;
 }
 #endif /* CONFIG_X86_X32_ABI */
+
+#ifdef CONFIG_COMPAT
+void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact)
+{
+	if (!act)
+		return;
+
+	if (in_ia32_syscall())
+		act->sa.sa_flags |= SA_IA32_ABI;
+	if (in_x32_syscall())
+		act->sa.sa_flags |= SA_X32_ABI;
+}
+#endif /* CONFIG_COMPAT */
+
+/*
+* If adding a new si_code, there is probably new data in
+* the siginfo.  Make sure folks bumping the si_code
+* limits also have to look at this code.  Make sure any
+* new fields are handled in copy_siginfo_to_user32()!
+*/
+static_assert(NSIGILL  == 11);
+static_assert(NSIGFPE  == 15);
+static_assert(NSIGSEGV == 9);
+static_assert(NSIGBUS  == 5);
+static_assert(NSIGTRAP == 6);
+static_assert(NSIGCHLD == 6);
+static_assert(NSIGSYS  == 2);
+
+/* This is part of the ABI and can never change in size: */
+static_assert(sizeof(siginfo_t) == 128);
+
+/* This is a part of the ABI and can never change in alignment */
+static_assert(__alignof__(siginfo_t) == 8);
+
+/*
+* The offsets of all the (unioned) si_fields are fixed
+* in the ABI, of course.  Make sure none of them ever
+* move and are always at the beginning:
+*/
+static_assert(offsetof(siginfo_t, si_signo) == 0);
+static_assert(offsetof(siginfo_t, si_errno) == 4);
+static_assert(offsetof(siginfo_t, si_code)  == 8);
+
+/*
+* Ensure that the size of each si_field never changes.
+* If it does, it is a sign that the
+* copy_siginfo_to_user32() code below needs to updated
+* along with the size in the CHECK_SI_SIZE().
+*
+* We repeat this check for both the generic and compat
+* siginfos.
+*
+* Note: it is OK for these to grow as long as the whole
+* structure stays within the padding size (checked
+* above).
+*/
+
+#define CHECK_SI_OFFSET(name)						\
+	static_assert(offsetof(siginfo_t, _sifields) == 		\
+		      offsetof(siginfo_t, _sifields.name))
+#define CHECK_SI_SIZE(name, size)					\
+	static_assert(sizeof_field(siginfo_t, _sifields.name) == size)
+
+CHECK_SI_OFFSET(_kill);
+CHECK_SI_SIZE  (_kill, 2*sizeof(int));
+static_assert(offsetof(siginfo_t, si_pid) == 0x10);
+static_assert(offsetof(siginfo_t, si_uid) == 0x14);
+
+CHECK_SI_OFFSET(_timer);
+CHECK_SI_SIZE  (_timer, 6*sizeof(int));
+static_assert(offsetof(siginfo_t, si_tid)     == 0x10);
+static_assert(offsetof(siginfo_t, si_overrun) == 0x14);
+static_assert(offsetof(siginfo_t, si_value)   == 0x18);
+
+CHECK_SI_OFFSET(_rt);
+CHECK_SI_SIZE  (_rt, 4*sizeof(int));
+static_assert(offsetof(siginfo_t, si_pid)   == 0x10);
+static_assert(offsetof(siginfo_t, si_uid)   == 0x14);
+static_assert(offsetof(siginfo_t, si_value) == 0x18);
+
+CHECK_SI_OFFSET(_sigchld);
+CHECK_SI_SIZE  (_sigchld, 8*sizeof(int));
+static_assert(offsetof(siginfo_t, si_pid)    == 0x10);
+static_assert(offsetof(siginfo_t, si_uid)    == 0x14);
+static_assert(offsetof(siginfo_t, si_status) == 0x18);
+static_assert(offsetof(siginfo_t, si_utime)  == 0x20);
+static_assert(offsetof(siginfo_t, si_stime)  == 0x28);
+
+#ifdef CONFIG_X86_X32_ABI
+/* no _sigchld_x32 in the generic siginfo_t */
+static_assert(sizeof_field(compat_siginfo_t, _sifields._sigchld_x32) ==
+	      7*sizeof(int));
+static_assert(offsetof(compat_siginfo_t, _sifields) ==
+	      offsetof(compat_siginfo_t, _sifields._sigchld_x32));
+static_assert(offsetof(compat_siginfo_t, _sifields._sigchld_x32._utime)  == 0x18);
+static_assert(offsetof(compat_siginfo_t, _sifields._sigchld_x32._stime)  == 0x20);
+#endif
+
+CHECK_SI_OFFSET(_sigfault);
+CHECK_SI_SIZE  (_sigfault, 8*sizeof(int));
+static_assert(offsetof(siginfo_t, si_addr)	== 0x10);
+
+static_assert(offsetof(siginfo_t, si_trapno)	== 0x18);
+
+static_assert(offsetof(siginfo_t, si_addr_lsb)	== 0x18);
+
+static_assert(offsetof(siginfo_t, si_lower)	== 0x20);
+static_assert(offsetof(siginfo_t, si_upper)	== 0x28);
+
+static_assert(offsetof(siginfo_t, si_pkey)	== 0x20);
+
+static_assert(offsetof(siginfo_t, si_perf_data)	 == 0x18);
+static_assert(offsetof(siginfo_t, si_perf_type)	 == 0x20);
+static_assert(offsetof(siginfo_t, si_perf_flags) == 0x24);
+
+CHECK_SI_OFFSET(_sigpoll);
+CHECK_SI_SIZE  (_sigpoll, 4*sizeof(int));
+static_assert(offsetof(siginfo_t, si_band) == 0x10);
+static_assert(offsetof(siginfo_t, si_fd)   == 0x18);
+
+CHECK_SI_OFFSET(_sigsys);
+CHECK_SI_SIZE  (_sigsys, 4*sizeof(int));
+static_assert(offsetof(siginfo_t, si_call_addr) == 0x10);
+static_assert(offsetof(siginfo_t, si_syscall)   == 0x18);
+static_assert(offsetof(siginfo_t, si_arch)      == 0x1C);
+
+/* any new si_fields should be added here */
diff --git a/arch/x86/kernel/signal_compat.c b/arch/x86/kernel/signal_compat.c
deleted file mode 100644
index 879ef8c72f5c..000000000000
--- a/arch/x86/kernel/signal_compat.c
+++ /dev/null
@@ -1,191 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/compat.h>
-#include <linux/uaccess.h>
-#include <linux/ptrace.h>
-
-/*
- * The compat_siginfo_t structure and handing code is very easy
- * to break in several ways.  It must always be updated when new
- * updates are made to the main siginfo_t, and
- * copy_siginfo_to_user32() must be updated when the
- * (arch-independent) copy_siginfo_to_user() is updated.
- *
- * It is also easy to put a new member in the compat_siginfo_t
- * which has implicit alignment which can move internal structure
- * alignment around breaking the ABI.  This can happen if you,
- * for instance, put a plain 64-bit value in there.
- */
-static inline void signal_compat_build_tests(void)
-{
-	int _sifields_offset = offsetof(compat_siginfo_t, _sifields);
-
-	/*
-	 * If adding a new si_code, there is probably new data in
-	 * the siginfo.  Make sure folks bumping the si_code
-	 * limits also have to look at this code.  Make sure any
-	 * new fields are handled in copy_siginfo_to_user32()!
-	 */
-	BUILD_BUG_ON(NSIGILL  != 11);
-	BUILD_BUG_ON(NSIGFPE  != 15);
-	BUILD_BUG_ON(NSIGSEGV != 9);
-	BUILD_BUG_ON(NSIGBUS  != 5);
-	BUILD_BUG_ON(NSIGTRAP != 6);
-	BUILD_BUG_ON(NSIGCHLD != 6);
-	BUILD_BUG_ON(NSIGSYS  != 2);
-
-	/* This is part of the ABI and can never change in size: */
-	BUILD_BUG_ON(sizeof(siginfo_t) != 128);
-	BUILD_BUG_ON(sizeof(compat_siginfo_t) != 128);
-
-	/* This is a part of the ABI and can never change in alignment */
-	BUILD_BUG_ON(__alignof__(siginfo_t) != 8);
-	BUILD_BUG_ON(__alignof__(compat_siginfo_t) != 4);
-
-	/*
-	 * The offsets of all the (unioned) si_fields are fixed
-	 * in the ABI, of course.  Make sure none of them ever
-	 * move and are always at the beginning:
-	 */
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, _sifields) != 3 * sizeof(int));
-#define CHECK_CSI_OFFSET(name)	  BUILD_BUG_ON(_sifields_offset != offsetof(compat_siginfo_t, _sifields.name))
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_signo) != 0);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_errno) != 4);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_code)  != 8);
-
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_signo) != 0);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_errno) != 4);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_code)  != 8);
-	 /*
-	 * Ensure that the size of each si_field never changes.
-	 * If it does, it is a sign that the
-	 * copy_siginfo_to_user32() code below needs to updated
-	 * along with the size in the CHECK_SI_SIZE().
-	 *
-	 * We repeat this check for both the generic and compat
-	 * siginfos.
-	 *
-	 * Note: it is OK for these to grow as long as the whole
-	 * structure stays within the padding size (checked
-	 * above).
-	 */
-#define CHECK_CSI_SIZE(name, size) BUILD_BUG_ON(size != sizeof(((compat_siginfo_t *)0)->_sifields.name))
-#define CHECK_SI_SIZE(name, size) BUILD_BUG_ON(size != sizeof(((siginfo_t *)0)->_sifields.name))
-
-	CHECK_CSI_OFFSET(_kill);
-	CHECK_CSI_SIZE  (_kill, 2*sizeof(int));
-	CHECK_SI_SIZE   (_kill, 2*sizeof(int));
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_pid) != 0x10);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_uid) != 0x14);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_pid) != 0xC);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_uid) != 0x10);
-
-	CHECK_CSI_OFFSET(_timer);
-	CHECK_CSI_SIZE  (_timer, 3*sizeof(int));
-	CHECK_SI_SIZE   (_timer, 6*sizeof(int));
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_tid)     != 0x10);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_overrun) != 0x14);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_value)   != 0x18);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_tid)     != 0x0C);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_overrun) != 0x10);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_value)   != 0x14);
-
-	CHECK_CSI_OFFSET(_rt);
-	CHECK_CSI_SIZE  (_rt, 3*sizeof(int));
-	CHECK_SI_SIZE   (_rt, 4*sizeof(int));
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_pid)   != 0x10);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_uid)   != 0x14);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_value) != 0x18);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_pid)   != 0x0C);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_uid)   != 0x10);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_value) != 0x14);
-
-	CHECK_CSI_OFFSET(_sigchld);
-	CHECK_CSI_SIZE  (_sigchld, 5*sizeof(int));
-	CHECK_SI_SIZE   (_sigchld, 8*sizeof(int));
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_pid)    != 0x10);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_uid)    != 0x14);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_status) != 0x18);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_utime)  != 0x20);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_stime)  != 0x28);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_pid)    != 0x0C);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_uid)    != 0x10);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_status) != 0x14);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_utime)  != 0x18);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_stime)  != 0x1C);
-
-#ifdef CONFIG_X86_X32_ABI
-	CHECK_CSI_OFFSET(_sigchld_x32);
-	CHECK_CSI_SIZE  (_sigchld_x32, 7*sizeof(int));
-	/* no _sigchld_x32 in the generic siginfo_t */
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, _sifields._sigchld_x32._utime)  != 0x18);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, _sifields._sigchld_x32._stime)  != 0x20);
-#endif
-
-	CHECK_CSI_OFFSET(_sigfault);
-	CHECK_CSI_SIZE  (_sigfault, 4*sizeof(int));
-	CHECK_SI_SIZE   (_sigfault, 8*sizeof(int));
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_addr) != 0x10);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_addr) != 0x0C);
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_trapno) != 0x18);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_trapno) != 0x10);
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_addr_lsb) != 0x18);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_addr_lsb) != 0x10);
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_lower) != 0x20);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_upper) != 0x28);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_lower) != 0x14);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_upper) != 0x18);
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_pkey) != 0x20);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_pkey) != 0x14);
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_perf_data) != 0x18);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_perf_type) != 0x20);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_perf_flags) != 0x24);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_perf_data) != 0x10);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_perf_type) != 0x14);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_perf_flags) != 0x18);
-
-	CHECK_CSI_OFFSET(_sigpoll);
-	CHECK_CSI_SIZE  (_sigpoll, 2*sizeof(int));
-	CHECK_SI_SIZE   (_sigpoll, 4*sizeof(int));
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_band)   != 0x10);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_fd)     != 0x18);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_band) != 0x0C);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_fd)   != 0x10);
-
-	CHECK_CSI_OFFSET(_sigsys);
-	CHECK_CSI_SIZE  (_sigsys, 3*sizeof(int));
-	CHECK_SI_SIZE   (_sigsys, 4*sizeof(int));
-
-	BUILD_BUG_ON(offsetof(siginfo_t, si_call_addr) != 0x10);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_syscall)   != 0x18);
-	BUILD_BUG_ON(offsetof(siginfo_t, si_arch)      != 0x1C);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_call_addr) != 0x0C);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_syscall)   != 0x10);
-	BUILD_BUG_ON(offsetof(compat_siginfo_t, si_arch)      != 0x14);
-
-	/* any new si_fields should be added here */
-}
-
-void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact)
-{
-	signal_compat_build_tests();
-
-	if (!act)
-		return;
-
-	if (in_ia32_syscall())
-		act->sa.sa_flags |= SA_IA32_ABI;
-	if (in_x32_syscall())
-		act->sa.sa_flags |= SA_X32_ABI;
-}
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index a78e73da4a74..8c33936b017d 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -215,7 +215,7 @@ static void __init cyc2ns_init_secondary_cpus(void)
 /*
  * Scheduler clock - returns current time in nanosec units.
  */
-u64 native_sched_clock(void)
+noinstr u64 native_sched_clock(void)
 {
 	if (static_branch_likely(&__use_tsc)) {
 		u64 tsc_now = rdtsc();
@@ -248,7 +248,7 @@ u64 native_sched_clock_from_tsc(u64 tsc)
 /* We need to define a real function for sched_clock, to override the
    weak default version */
 #ifdef CONFIG_PARAVIRT
-unsigned long long sched_clock(void)
+noinstr u64 sched_clock(void)
 {
 	return paravirt_sched_clock();
 }
@@ -258,8 +258,7 @@ bool using_native_sched_clock(void)
 	return static_call_query(pv_sched_clock) == native_sched_clock;
 }
 #else
-unsigned long long
-sched_clock(void) __attribute__((alias("native_sched_clock")));
+u64 sched_clock(void) __attribute__((alias("native_sched_clock")));
 
 bool using_native_sched_clock(void) { return true; }
 #endif
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 2e0ee14229bf..25f155205770 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -129,7 +129,6 @@ SECTIONS
 		HEAD_TEXT
 		TEXT_TEXT
 		SCHED_TEXT
-		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		SOFTIRQENTRY_TEXT