17 files changed, 89 insertions, 100 deletions
diff --git a/arch/x86/include/asm/arch_hweight.h b/arch/x86/include/asm/arch_hweight.h
index b5982b94bdba..cbc6157f0b4b 100644
--- a/arch/x86/include/asm/arch_hweight.h
+++ b/arch/x86/include/asm/arch_hweight.h
@@ -16,7 +16,8 @@ static __always_inline unsigned int __arch_hweight32(unsigned int w)
 {
 	unsigned int res;
 
-	asm_inline (ALTERNATIVE("call __sw_hweight32",
+	asm_inline (ALTERNATIVE(ANNOTATE_IGNORE_ALTERNATIVE
+				"call __sw_hweight32",
 				"popcntl %[val], %[cnt]", X86_FEATURE_POPCNT)
 			 : [cnt] "=" REG_OUT (res), ASM_CALL_CONSTRAINT
 			 : [val] REG_IN (w));
@@ -45,7 +46,8 @@ static __always_inline unsigned long __arch_hweight64(__u64 w)
 {
 	unsigned long res;
 
-	asm_inline (ALTERNATIVE("call __sw_hweight64",
+	asm_inline (ALTERNATIVE(ANNOTATE_IGNORE_ALTERNATIVE
+				"call __sw_hweight64",
 				"popcntq %[val], %[cnt]", X86_FEATURE_POPCNT)
 			 : [cnt] "=" REG_OUT (res), ASM_CALL_CONSTRAINT
 			 : [val] REG_IN (w));
diff --git a/arch/x86/include/asm/highmem.h b/arch/x86/include/asm/highmem.h
index 731ee7cc40a5..585bdadba47d 100644
--- a/arch/x86/include/asm/highmem.h
+++ b/arch/x86/include/asm/highmem.h
@@ -69,9 +69,6 @@ extern unsigned long highstart_pfn, highend_pfn;
 		arch_flush_lazy_mmu_mode();		\
 	} while (0)
 
-extern void add_highpages_with_active_regions(int nid, unsigned long start_pfn,
-					unsigned long end_pfn);
-
 #endif /* __KERNEL__ */
 
 #endif /* _ASM_X86_HIGHMEM_H */
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 1a0dc2b2bf5b..e889c3bab5a2 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -170,7 +170,7 @@ extern void __iomem *ioremap_uc(resource_size_t offset, unsigned long size);
 #define ioremap_uc ioremap_uc
 extern void __iomem *ioremap_cache(resource_size_t offset, unsigned long size);
 #define ioremap_cache ioremap_cache
-extern void __iomem *ioremap_prot(resource_size_t offset, unsigned long size, unsigned long prot_val);
+extern void __iomem *ioremap_prot(resource_size_t offset, unsigned long size,  pgprot_t prot);
 #define ioremap_prot ioremap_prot
 extern void __iomem *ioremap_encrypted(resource_size_t phys_addr, unsigned long size);
 #define ioremap_encrypted ioremap_encrypted
diff --git a/arch/x86/include/asm/iosf_mbi.h b/arch/x86/include/asm/iosf_mbi.h
index af7541c11821..8ace6559d399 100644
--- a/arch/x86/include/asm/iosf_mbi.h
+++ b/arch/x86/include/asm/iosf_mbi.h
@@ -168,13 +168,6 @@ void iosf_mbi_unblock_punit_i2c_access(void);
 int iosf_mbi_register_pmic_bus_access_notifier(struct notifier_block *nb);
 
 /**
- * iosf_mbi_register_pmic_bus_access_notifier - Unregister PMIC bus notifier
- *
- * @nb: notifier_block to unregister
- */
-int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb);
-
-/**
  * iosf_mbi_unregister_pmic_bus_access_notifier_unlocked - Unregister PMIC bus
  *                                                         notifier, unlocked
  *
diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
index abb8374c9ff7..9a9b21b78905 100644
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -76,6 +76,28 @@ static __always_inline void native_local_irq_restore(unsigned long flags)
 
 #endif
 
+#ifndef CONFIG_PARAVIRT
+#ifndef __ASSEMBLY__
+/*
+ * Used in the idle loop; sti takes one instruction cycle
+ * to complete:
+ */
+static __always_inline void arch_safe_halt(void)
+{
+	native_safe_halt();
+}
+
+/*
+ * Used when interrupts are already enabled or to
+ * shutdown the processor:
+ */
+static __always_inline void halt(void)
+{
+	native_halt();
+}
+#endif /* __ASSEMBLY__ */
+#endif /* CONFIG_PARAVIRT */
+
 #ifdef CONFIG_PARAVIRT_XXL
 #include <asm/paravirt.h>
 #else
@@ -98,24 +120,6 @@ static __always_inline void arch_local_irq_enable(void)
 }
 
 /*
- * Used in the idle loop; sti takes one instruction cycle
- * to complete:
- */
-static __always_inline void arch_safe_halt(void)
-{
-	native_safe_halt();
-}
-
-/*
- * Used when interrupts are already enabled or to
- * shutdown the processor:
- */
-static __always_inline void halt(void)
-{
-	native_halt();
-}
-
-/*
  * For spinlocks, etc:
  */
 static __always_inline unsigned long arch_local_irq_save(void)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index a884ab544335..3bdae454a959 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1472,8 +1472,13 @@ struct kvm_arch {
 	struct once nx_once;
 
 #ifdef CONFIG_X86_64
-	/* The number of TDP MMU pages across all roots. */
+#ifdef CONFIG_KVM_PROVE_MMU
+	/*
+	 * The number of TDP MMU pages across all roots.  Used only to sanity
+	 * check that KVM isn't leaking TDP MMU pages.
+	 */
 	atomic64_t tdp_mmu_pages;
+#endif
 
 	/*
 	 * List of struct kvm_mmu_pages being used as roots.
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
index 8a5cc8e70439..5c43f145454d 100644
--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -269,7 +269,7 @@
  * typically has NO_MELTDOWN).
  *
  * While retbleed_untrain_ret() doesn't clobber anything but requires stack,
- * entry_ibpb() will clobber AX, CX, DX.
+ * write_ibpb() will clobber AX, CX, DX.
  *
  * As such, this must be placed after every *SWITCH_TO_KERNEL_CR3 at a point
  * where we have a stack but before any RET instruction.
@@ -279,7 +279,7 @@
 	VALIDATE_UNRET_END
 	CALL_UNTRAIN_RET
 	ALTERNATIVE_2 "",						\
-		      "call entry_ibpb", \ibpb_feature,			\
+		      "call write_ibpb", \ibpb_feature,			\
 		     __stringify(\call_depth_insns), X86_FEATURE_CALL_DEPTH
 #endif
 .endm
@@ -368,7 +368,7 @@ extern void srso_return_thunk(void);
 extern void srso_alias_return_thunk(void);
 
 extern void entry_untrain_ret(void);
-extern void entry_ibpb(void);
+extern void write_ibpb(void);
 
 #ifdef CONFIG_X86_64
 extern void clear_bhb_loop(void);
@@ -514,11 +514,11 @@ void alternative_msr_write(unsigned int msr, u64 val, unsigned int feature)
 		: "memory");
 }
 
-extern u64 x86_pred_cmd;
-
 static inline void indirect_branch_prediction_barrier(void)
 {
-	alternative_msr_write(MSR_IA32_PRED_CMD, x86_pred_cmd, X86_FEATURE_IBPB);
+	asm_inline volatile(ALTERNATIVE("", "call write_ibpb", X86_FEATURE_IBPB)
+			    : ASM_CALL_CONSTRAINT
+			    :: "rax", "rcx", "rdx", "memory");
 }
 
 /* The Intel SPEC CTRL MSR base value cache */
diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h
index 5469d7a7c40f..53ba39ce010c 100644
--- a/arch/x86/include/asm/numa.h
+++ b/arch/x86/include/asm/numa.h
@@ -41,10 +41,6 @@ static inline int numa_cpu_node(int cpu)
 }
 #endif	/* CONFIG_NUMA */
 
-#ifdef CONFIG_X86_32
-# include <asm/numa_32.h>
-#endif
-
 #ifdef CONFIG_NUMA
 extern void numa_set_node(int cpu, int node);
 extern void numa_clear_node(int cpu);
diff --git a/arch/x86/include/asm/numa_32.h b/arch/x86/include/asm/numa_32.h
deleted file mode 100644
index 9c8e9e85be77..000000000000
--- a/arch/x86/include/asm/numa_32.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_X86_NUMA_32_H
-#define _ASM_X86_NUMA_32_H
-
-#ifdef CONFIG_HIGHMEM
-extern void set_highmem_pages_init(void);
-#else
-static inline void set_highmem_pages_init(void)
-{
-}
-#endif
-
-#endif /* _ASM_X86_NUMA_32_H */
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index bed346bfac89..c4c23190925c 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -102,6 +102,16 @@ static inline void notify_page_enc_status_changed(unsigned long pfn,
 	PVOP_VCALL3(mmu.notify_page_enc_status_changed, pfn, npages, enc);
 }
 
+static __always_inline void arch_safe_halt(void)
+{
+	PVOP_VCALL0(irq.safe_halt);
+}
+
+static inline void halt(void)
+{
+	PVOP_VCALL0(irq.halt);
+}
+
 #ifdef CONFIG_PARAVIRT_XXL
 static inline void load_sp0(unsigned long sp0)
 {
@@ -165,16 +175,6 @@ static inline void __write_cr4(unsigned long x)
 	PVOP_VCALL1(cpu.write_cr4, x);
 }
 
-static __always_inline void arch_safe_halt(void)
-{
-	PVOP_VCALL0(irq.safe_halt);
-}
-
-static inline void halt(void)
-{
-	PVOP_VCALL0(irq.halt);
-}
-
 static inline u64 paravirt_read_msr(unsigned msr)
 {
 	return PVOP_CALL1(u64, cpu.read_msr, msr);
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index 62912023b46f..631c306ce1ff 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -120,10 +120,9 @@ struct pv_irq_ops {
 	struct paravirt_callee_save save_fl;
 	struct paravirt_callee_save irq_disable;
 	struct paravirt_callee_save irq_enable;
-
+#endif
 	void (*safe_halt)(void);
 	void (*halt)(void);
-#endif
 } __no_randomize_layout;
 
 struct pv_mmu_ops {
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 105db2d33c7b..5fe314a2e73e 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -63,10 +63,14 @@
 	unsigned long tcp_ptr__ = raw_cpu_read_long(this_cpu_off);	\
 									\
 	tcp_ptr__ += (__force unsigned long)(_ptr);			\
-	(typeof(*(_ptr)) __kernel __force *)tcp_ptr__;			\
+	(TYPEOF_UNQUAL(*(_ptr)) __force __kernel *)tcp_ptr__;		\
 })
 #else
-#define arch_raw_cpu_ptr(_ptr) ({ BUILD_BUG(); (typeof(_ptr))0; })
+#define arch_raw_cpu_ptr(_ptr)						\
+({									\
+	BUILD_BUG();							\
+	(TYPEOF_UNQUAL(*(_ptr)) __force __kernel *)0;			\
+})
 #endif
 
 #define PER_CPU_VAR(var)	%__percpu_seg:(var)__percpu_rel
@@ -81,9 +85,18 @@
 
 #endif /* CONFIG_SMP */
 
-#define __my_cpu_type(var)	typeof(var) __percpu_seg_override
-#define __my_cpu_ptr(ptr)	(__my_cpu_type(*(ptr))*)(__force uintptr_t)(ptr)
-#define __my_cpu_var(var)	(*__my_cpu_ptr(&(var)))
+#if defined(CONFIG_USE_X86_SEG_SUPPORT) && defined(USE_TYPEOF_UNQUAL)
+# define __my_cpu_type(var)	typeof(var)
+# define __my_cpu_ptr(ptr)	(ptr)
+# define __my_cpu_var(var)	(var)
+
+# define __percpu_qual		__percpu_seg_override
+#else
+# define __my_cpu_type(var)	typeof(var) __percpu_seg_override
+# define __my_cpu_ptr(ptr)	(__my_cpu_type(*(ptr))*)(__force uintptr_t)(ptr)
+# define __my_cpu_var(var)	(*__my_cpu_ptr(&(var)))
+#endif
+
 #define __percpu_arg(x)		__percpu_prefix "%" #x
 #define __force_percpu_arg(x)	__force_percpu_prefix "%" #x
 
@@ -150,7 +163,7 @@ do {									\
 	__pcpu_type_##size pto_val__ = __pcpu_cast_##size(_val);	\
 									\
 	if (0) {		                                        \
-		typeof(_var) pto_tmp__;					\
+		TYPEOF_UNQUAL(_var) pto_tmp__;				\
 		pto_tmp__ = (_val);					\
 		(void)pto_tmp__;					\
 	}								\
@@ -191,7 +204,7 @@ do {									\
 	__pcpu_type_##size pto_val__ = __pcpu_cast_##size(_val);	\
 									\
 	if (0) {		                                        \
-		typeof(_var) pto_tmp__;					\
+		TYPEOF_UNQUAL(_var) pto_tmp__;				\
 		pto_tmp__ = (_val);					\
 		(void)pto_tmp__;					\
 	}								\
@@ -212,7 +225,7 @@ do {									\
 			 (val) == (typeof(val))-1)) ? (int)(val) : 0;	\
 									\
 	if (0) {							\
-		typeof(var) pao_tmp__;					\
+		TYPEOF_UNQUAL(var) pao_tmp__;				\
 		pao_tmp__ = (val);					\
 		(void)pao_tmp__;					\
 	}								\
@@ -245,7 +258,7 @@ do {									\
  */
 #define raw_percpu_xchg_op(_var, _nval)					\
 ({									\
-	typeof(_var) pxo_old__ = raw_cpu_read(_var);			\
+	TYPEOF_UNQUAL(_var) pxo_old__ = raw_cpu_read(_var);		\
 									\
 	raw_cpu_write(_var, _nval);					\
 									\
@@ -259,7 +272,7 @@ do {									\
  */
 #define this_percpu_xchg_op(_var, _nval)				\
 ({									\
-	typeof(_var) pxo_old__ = this_cpu_read(_var);			\
+	TYPEOF_UNQUAL(_var) pxo_old__ = this_cpu_read(_var);		\
 									\
 	do { } while (!this_cpu_try_cmpxchg(_var, &pxo_old__, _nval));	\
 									\
diff --git a/arch/x86/include/asm/smap.h b/arch/x86/include/asm/smap.h
index daea94c2993c..4f84d421d1cf 100644
--- a/arch/x86/include/asm/smap.h
+++ b/arch/x86/include/asm/smap.h
@@ -40,7 +40,8 @@ static __always_inline unsigned long smap_save(void)
 	unsigned long flags;
 
 	asm volatile ("# smap_save\n\t"
-		      ALTERNATIVE("", "pushf; pop %0; " "clac" "\n\t",
+		      ALTERNATIVE(ANNOTATE_IGNORE_ALTERNATIVE
+				  "", "pushf; pop %0; clac",
 				  X86_FEATURE_SMAP)
 		      : "=rm" (flags) : : "memory", "cc");
 
@@ -50,7 +51,8 @@ static __always_inline unsigned long smap_save(void)
 static __always_inline void smap_restore(unsigned long flags)
 {
 	asm volatile ("# smap_restore\n\t"
-		      ALTERNATIVE("", "push %0; popf\n\t",
+		      ALTERNATIVE(ANNOTATE_IGNORE_ALTERNATIVE
+				  "", "push %0; popf",
 				  X86_FEATURE_SMAP)
 		      : : "g" (flags) : "memory", "cc");
 }
@@ -61,6 +63,11 @@ static __always_inline void smap_restore(unsigned long flags)
 #define ASM_STAC \
 	ALTERNATIVE("", "stac", X86_FEATURE_SMAP)
 
+#define ASM_CLAC_UNSAFE \
+	ALTERNATIVE("", ANNOTATE_IGNORE_ALTERNATIVE "clac", X86_FEATURE_SMAP)
+#define ASM_STAC_UNSAFE \
+	ALTERNATIVE("", ANNOTATE_IGNORE_ALTERNATIVE "stac", X86_FEATURE_SMAP)
+
 #endif /* __ASSEMBLER__ */
 
 #endif /* _ASM_X86_SMAP_H */
diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h
index 65394aa9b49f..4a1922ec80cf 100644
--- a/arch/x86/include/asm/tdx.h
+++ b/arch/x86/include/asm/tdx.h
@@ -58,7 +58,7 @@ void tdx_get_ve_info(struct ve_info *ve);
 
 bool tdx_handle_virt_exception(struct pt_regs *regs, struct ve_info *ve);
 
-void tdx_safe_halt(void);
+void tdx_halt(void);
 
 bool tdx_early_handle_ve(struct pt_regs *regs);
 
@@ -72,7 +72,7 @@ void __init tdx_dump_td_ctls(u64 td_ctls);
 #else
 
 static inline void tdx_early_init(void) { };
-static inline void tdx_safe_halt(void) { };
+static inline void tdx_halt(void) { };
 
 static inline bool tdx_early_handle_ve(struct pt_regs *regs) { return false; }
 
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index a9af8759de34..e9b81876ebe4 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -348,8 +348,7 @@ static inline u64 inc_mm_tlb_gen(struct mm_struct *mm)
 }
 
 static inline void arch_tlbbatch_add_pending(struct arch_tlbflush_unmap_batch *batch,
-					     struct mm_struct *mm,
-					     unsigned long uaddr)
+		struct mm_struct *mm, unsigned long start, unsigned long end)
 {
 	inc_mm_tlb_gen(mm);
 	cpumask_or(&batch->cpumask, &batch->cpumask, mm_cpumask(mm));
diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
index 97771b9d33af..59a62c3780a2 100644
--- a/arch/x86/include/asm/xen/hypercall.h
+++ b/arch/x86/include/asm/xen/hypercall.h
@@ -231,14 +231,12 @@ static __always_inline void __xen_stac(void)
 	 * Suppress objtool seeing the STAC/CLAC and getting confused about it
 	 * calling random code with AC=1.
 	 */
-	asm volatile(ANNOTATE_IGNORE_ALTERNATIVE
-		     ASM_STAC ::: "memory", "flags");
+	asm volatile(ASM_STAC_UNSAFE ::: "memory", "flags");
 }
 
 static __always_inline void __xen_clac(void)
 {
-	asm volatile(ANNOTATE_IGNORE_ALTERNATIVE
-		     ASM_CLAC ::: "memory", "flags");
+	asm volatile(ASM_CLAC_UNSAFE ::: "memory", "flags");
 }
 
 static inline long
diff --git a/arch/x86/include/asm/xen/hypervisor.h b/arch/x86/include/asm/xen/hypervisor.h
index a9088250770f..bd0fc69a10a7 100644
--- a/arch/x86/include/asm/xen/hypervisor.h
+++ b/arch/x86/include/asm/xen/hypervisor.h
@@ -72,18 +72,10 @@ enum xen_lazy_mode {
 };
 
 DECLARE_PER_CPU(enum xen_lazy_mode, xen_lazy_mode);
-DECLARE_PER_CPU(unsigned int, xen_lazy_nesting);
 
 static inline void enter_lazy(enum xen_lazy_mode mode)
 {
-	enum xen_lazy_mode old_mode = this_cpu_read(xen_lazy_mode);
-
-	if (mode == old_mode) {
-		this_cpu_inc(xen_lazy_nesting);
-		return;
-	}
-
-	BUG_ON(old_mode != XEN_LAZY_NONE);
+	BUG_ON(this_cpu_read(xen_lazy_mode) != XEN_LAZY_NONE);
 
 	this_cpu_write(xen_lazy_mode, mode);
 }
@@ -92,10 +84,7 @@ static inline void leave_lazy(enum xen_lazy_mode mode)
 {
 	BUG_ON(this_cpu_read(xen_lazy_mode) != mode);
 
-	if (this_cpu_read(xen_lazy_nesting) == 0)
-		this_cpu_write(xen_lazy_mode, XEN_LAZY_NONE);
-	else
-		this_cpu_dec(xen_lazy_nesting);
+	this_cpu_write(xen_lazy_mode, XEN_LAZY_NONE);
 }
 
 enum xen_lazy_mode xen_get_lazy_mode(void);