16 files changed, 139 insertions, 116 deletions

diff --git a/arch/arm/include/asm/cpuidle.h b/arch/arm/include/asm/cpuidle.h
index 0d67ed682e07..bc4ffa7ca04c 100644
--- a/arch/arm/include/asm/cpuidle.h
+++ b/arch/arm/include/asm/cpuidle.h
@@ -7,9 +7,11 @@
 #ifdef CONFIG_CPU_IDLE
 extern int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
 		struct cpuidle_driver *drv, int index);
+#define __cpuidle_method_section __used __section("__cpuidle_method_of_table")
 #else
 static inline int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
 		struct cpuidle_driver *drv, int index) { return -ENODEV; }
+#define __cpuidle_method_section __maybe_unused /* drop silently */
 #endif
 
 /* Common ARM WFI state */
@@ -42,8 +44,7 @@ struct of_cpuidle_method {
 
 #define CPUIDLE_METHOD_OF_DECLARE(name, _method, _ops)			\
 	static const struct of_cpuidle_method __cpuidle_method_of_table_##name \
-	__used __section("__cpuidle_method_of_table")			\
-	= { .method = _method, .ops = _ops }
+	__cpuidle_method_section = { .method = _method, .ops = _ops }
 
 extern int arm_cpuidle_suspend(int index);
 
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index c5914e70a0fd..18ec0f9bb8d5 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -61,11 +61,11 @@ config RISCV
 	select GENERIC_TIME_VSYSCALL if MMU && 64BIT
 	select HANDLE_DOMAIN_IRQ
 	select HAVE_ARCH_AUDITSYSCALL
-	select HAVE_ARCH_JUMP_LABEL
-	select HAVE_ARCH_JUMP_LABEL_RELATIVE
+	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
+	select HAVE_ARCH_JUMP_LABEL_RELATIVE if !XIP_KERNEL
 	select HAVE_ARCH_KASAN if MMU && 64BIT
 	select HAVE_ARCH_KASAN_VMALLOC if MMU && 64BIT
-	select HAVE_ARCH_KGDB
+	select HAVE_ARCH_KGDB if !XIP_KERNEL
 	select HAVE_ARCH_KGDB_QXFER_PKT
 	select HAVE_ARCH_MMAP_RND_BITS if MMU
 	select HAVE_ARCH_SECCOMP_FILTER
@@ -80,9 +80,9 @@ config RISCV
 	select HAVE_GCC_PLUGINS
 	select HAVE_GENERIC_VDSO if MMU && 64BIT
 	select HAVE_IRQ_TIME_ACCOUNTING
-	select HAVE_KPROBES
-	select HAVE_KPROBES_ON_FTRACE
-	select HAVE_KRETPROBES
+	select HAVE_KPROBES if !XIP_KERNEL
+	select HAVE_KPROBES_ON_FTRACE if !XIP_KERNEL
+	select HAVE_KRETPROBES if !XIP_KERNEL
 	select HAVE_PCI
 	select HAVE_PERF_EVENTS
 	select HAVE_PERF_REGS
@@ -231,11 +231,11 @@ config ARCH_RV64I
 	bool "RV64I"
 	select 64BIT
 	select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && GCC_VERSION >= 50000
-	select HAVE_DYNAMIC_FTRACE if MMU && $(cc-option,-fpatchable-function-entry=8)
+	select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && MMU && $(cc-option,-fpatchable-function-entry=8)
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
-	select HAVE_FTRACE_MCOUNT_RECORD
+	select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
 	select HAVE_FUNCTION_GRAPH_TRACER
-	select HAVE_FUNCTION_TRACER
+	select HAVE_FUNCTION_TRACER if !XIP_KERNEL
 	select SWIOTLB if MMU
 
 endchoice
diff --git a/arch/riscv/boot/dts/microchip/Makefile b/arch/riscv/boot/dts/microchip/Makefile
index 622b12771fd3..855c1502d912 100644
--- a/arch/riscv/boot/dts/microchip/Makefile
+++ b/arch/riscv/boot/dts/microchip/Makefile
@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += microchip-mpfs-icicle-kit.dtb
+obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .o, $(dtb-y))
diff --git a/arch/riscv/boot/dts/sifive/Makefile b/arch/riscv/boot/dts/sifive/Makefile
index 74c47fe9fc22..d90e4eb0ade8 100644
--- a/arch/riscv/boot/dts/sifive/Makefile
+++ b/arch/riscv/boot/dts/sifive/Makefile
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_SOC_SIFIVE) += hifive-unleashed-a00.dtb \
 			    hifive-unmatched-a00.dtb
+obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .o, $(dtb-y))
diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
index 88c08705f64a..67406c376389 100644
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -51,7 +51,7 @@
 	REG_ASM " " newlen "\n" \
 	".word " errata_id "\n"
 
-#define ALT_NEW_CONSTENT(vendor_id, errata_id, enable, new_c) \
+#define ALT_NEW_CONTENT(vendor_id, errata_id, enable, new_c) \
 	".if " __stringify(enable) " == 1\n"				\
 	".pushsection .alternative, \"a\"\n"				\
 	ALT_ENTRY("886b", "888f", __stringify(vendor_id), __stringify(errata_id), "889f - 888f") \
@@ -69,7 +69,7 @@
 	"886 :\n"	\
 	old_c "\n"	\
 	"887 :\n"	\
-	ALT_NEW_CONSTENT(vendor_id, errata_id, enable, new_c)
+	ALT_NEW_CONTENT(vendor_id, errata_id, enable, new_c)
 
 #define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k)	\
 	__ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k))
diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
index 0721b9798595..7bc88d8aab97 100644
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
@@ -86,8 +86,13 @@ static void do_trap_error(struct pt_regs *regs, int signo, int code,
 	}
 }
 
+#if defined (CONFIG_XIP_KERNEL) && defined (CONFIG_RISCV_ERRATA_ALTERNATIVE)
+#define __trap_section		__section(".xip.traps")
+#else
+#define __trap_section
+#endif
 #define DO_ERROR_INFO(name, signo, code, str)				\
-asmlinkage __visible void name(struct pt_regs *regs)			\
+asmlinkage __visible __trap_section void name(struct pt_regs *regs)	\
 {									\
 	do_trap_error(regs, signo, code, regs->epc, "Oops - " str);	\
 }
@@ -111,7 +116,7 @@ DO_ERROR_INFO(do_trap_store_misaligned,
 int handle_misaligned_load(struct pt_regs *regs);
 int handle_misaligned_store(struct pt_regs *regs);
 
-asmlinkage void do_trap_load_misaligned(struct pt_regs *regs)
+asmlinkage void __trap_section do_trap_load_misaligned(struct pt_regs *regs)
 {
 	if (!handle_misaligned_load(regs))
 		return;
@@ -119,7 +124,7 @@ asmlinkage void do_trap_load_misaligned(struct pt_regs *regs)
 		      "Oops - load address misaligned");
 }
 
-asmlinkage void do_trap_store_misaligned(struct pt_regs *regs)
+asmlinkage void __trap_section do_trap_store_misaligned(struct pt_regs *regs)
 {
 	if (!handle_misaligned_store(regs))
 		return;
@@ -146,7 +151,7 @@ static inline unsigned long get_break_insn_length(unsigned long pc)
 	return GET_INSN_LENGTH(insn);
 }
 
-asmlinkage __visible void do_trap_break(struct pt_regs *regs)
+asmlinkage __visible __trap_section void do_trap_break(struct pt_regs *regs)
 {
 #ifdef CONFIG_KPROBES
 	if (kprobe_single_step_handler(regs))
diff --git a/arch/riscv/kernel/vmlinux-xip.lds.S b/arch/riscv/kernel/vmlinux-xip.lds.S
index 4b29b9917f99..a3ff09c4c3f9 100644
--- a/arch/riscv/kernel/vmlinux-xip.lds.S
+++ b/arch/riscv/kernel/vmlinux-xip.lds.S
@@ -99,9 +99,22 @@ SECTIONS
 	}
 	PERCPU_SECTION(L1_CACHE_BYTES)
 
-	. = ALIGN(PAGE_SIZE);
+	. = ALIGN(8);
+	.alternative : {
+		__alt_start = .;
+		*(.alternative)
+		__alt_end = .;
+	}
 	__init_end = .;
 
+	. = ALIGN(16);
+	.xip.traps : {
+		__xip_traps_start = .;
+		*(.xip.traps)
+		__xip_traps_end = .;
+	}
+
+	. = ALIGN(PAGE_SIZE);
 	.sdata : {
 		__global_pointer$ = . + 0x800;
 		*(.sdata*)
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 307529417021..cb5e8d39cac1 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -200,8 +200,9 @@ endif
 KBUILD_LDFLAGS += -m elf_$(UTS_MACHINE)
 
 ifdef CONFIG_LTO_CLANG
-KBUILD_LDFLAGS	+= -plugin-opt=-code-model=kernel \
-		   -plugin-opt=-stack-alignment=$(if $(CONFIG_X86_32),4,8)
+ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 130000; echo $$?),0)
+KBUILD_LDFLAGS	+= -plugin-opt=-stack-alignment=$(if $(CONFIG_X86_32),4,8)
+endif
 endif
 
 ifdef CONFIG_X86_NEED_RELOCS
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 63f097289a84..3a75a2c601c2 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -1406,6 +1406,8 @@ static int snbep_pci2phy_map_init(int devid, int nodeid_loc, int idmap_loc, bool
 						die_id = i;
 					else
 						die_id = topology_phys_to_logical_pkg(i);
+					if (die_id < 0)
+						die_id = -ENODEV;
 					map->pbus_to_dieid[bus] = die_id;
 					break;
 				}
@@ -1452,14 +1454,14 @@ static int snbep_pci2phy_map_init(int devid, int nodeid_loc, int idmap_loc, bool
 			i = -1;
 			if (reverse) {
 				for (bus = 255; bus >= 0; bus--) {
-					if (map->pbus_to_dieid[bus] >= 0)
+					if (map->pbus_to_dieid[bus] != -1)
 						i = map->pbus_to_dieid[bus];
 					else
 						map->pbus_to_dieid[bus] = i;
 				}
 			} else {
 				for (bus = 0; bus <= 255; bus++) {
-					if (map->pbus_to_dieid[bus] >= 0)
+					if (map->pbus_to_dieid[bus] != -1)
 						i = map->pbus_to_dieid[bus];
 					else
 						map->pbus_to_dieid[bus] = i;
@@ -5097,9 +5099,10 @@ static struct intel_uncore_type icx_uncore_m2m = {
 	.perf_ctr	= SNR_M2M_PCI_PMON_CTR0,
 	.event_ctl	= SNR_M2M_PCI_PMON_CTL0,
 	.event_mask	= SNBEP_PMON_RAW_EVENT_MASK,
+	.event_mask_ext	= SNR_M2M_PCI_PMON_UMASK_EXT,
 	.box_ctl	= SNR_M2M_PCI_PMON_BOX_CTL,
 	.ops		= &snr_m2m_uncore_pci_ops,
-	.format_group	= &skx_uncore_format_group,
+	.format_group	= &snr_m2m_uncore_format_group,
 };
 
 static struct attribute *icx_upi_uncore_formats_attr[] = {
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index e90310cbe73a..e55e0c1fad8c 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -5,6 +5,7 @@
  *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
  *  Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
  */
+#define pr_fmt(fmt) "ACPI: " fmt
 
 #include <linux/init.h>
 #include <linux/acpi.h>
@@ -42,8 +43,6 @@ EXPORT_SYMBOL(acpi_disabled);
 # include <asm/proto.h>
 #endif				/* X86 */
 
-#define PREFIX			"ACPI: "
-
 int acpi_noirq;				/* skip ACPI IRQ initialization */
 static int acpi_nobgrt;			/* skip ACPI BGRT */
 int acpi_pci_disabled;		/* skip ACPI PCI scan and IRQ initialization */
@@ -130,15 +129,14 @@ static int __init acpi_parse_madt(struct acpi_table_header *table)
 
 	madt = (struct acpi_table_madt *)table;
 	if (!madt) {
-		printk(KERN_WARNING PREFIX "Unable to map MADT\n");
+		pr_warn("Unable to map MADT\n");
 		return -ENODEV;
 	}
 
 	if (madt->address) {
 		acpi_lapic_addr = (u64) madt->address;
 
-		printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
-		       madt->address);
+		pr_debug("Local APIC address 0x%08x\n", madt->address);
 	}
 
 	default_acpi_madt_oem_check(madt->header.oem_id,
@@ -161,7 +159,7 @@ static int acpi_register_lapic(int id, u32 acpiid, u8 enabled)
 	int cpu;
 
 	if (id >= MAX_LOCAL_APIC) {
-		printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
+		pr_info("skipped apicid that is too big\n");
 		return -EINVAL;
 	}
 
@@ -213,13 +211,13 @@ acpi_parse_x2apic(union acpi_subtable_headers *header, const unsigned long end)
 	 */
 	if (!apic->apic_id_valid(apic_id)) {
 		if (enabled)
-			pr_warn(PREFIX "x2apic entry ignored\n");
+			pr_warn("x2apic entry ignored\n");
 		return 0;
 	}
 
 	acpi_register_lapic(apic_id, processor->uid, enabled);
 #else
-	printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
+	pr_warn("x2apic entry ignored\n");
 #endif
 
 	return 0;
@@ -306,7 +304,7 @@ acpi_parse_x2apic_nmi(union acpi_subtable_headers *header,
 	acpi_table_print_madt_entry(&header->common);
 
 	if (x2apic_nmi->lint != 1)
-		printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
+		pr_warn("NMI not connected to LINT 1!\n");
 
 	return 0;
 }
@@ -324,7 +322,7 @@ acpi_parse_lapic_nmi(union acpi_subtable_headers * header, const unsigned long e
 	acpi_table_print_madt_entry(&header->common);
 
 	if (lapic_nmi->lint != 1)
-		printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
+		pr_warn("NMI not connected to LINT 1!\n");
 
 	return 0;
 }
@@ -514,14 +512,14 @@ acpi_parse_int_src_ovr(union acpi_subtable_headers * header,
 
 	if (intsrc->source_irq == 0) {
 		if (acpi_skip_timer_override) {
-			printk(PREFIX "BIOS IRQ0 override ignored.\n");
+			pr_warn("BIOS IRQ0 override ignored.\n");
 			return 0;
 		}
 
 		if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
 			&& (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
 			intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
-			printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
+			pr_warn("BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
 		}
 	}
 
@@ -597,7 +595,7 @@ void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
 	if (old == new)
 		return;
 
-	printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
+	pr_warn("setting ELCR to %04x (from %04x)\n", new, old);
 	outb(new, 0x4d0);
 	outb(new >> 8, 0x4d1);
 }
@@ -754,7 +752,7 @@ int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 acpi_id,
 
 	cpu = acpi_register_lapic(physid, acpi_id, ACPI_MADT_ENABLED);
 	if (cpu < 0) {
-		pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
+		pr_info("Unable to map lapic to logical cpu number\n");
 		return cpu;
 	}
 
@@ -870,8 +868,7 @@ static int __init acpi_parse_hpet(struct acpi_table_header *table)
 	struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table;
 
 	if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
-		printk(KERN_WARNING PREFIX "HPET timers must be located in "
-		       "memory.\n");
+		pr_warn("HPET timers must be located in memory.\n");
 		return -1;
 	}
 
@@ -883,9 +880,7 @@ static int __init acpi_parse_hpet(struct acpi_table_header *table)
 	 * want to allocate a resource there.
 	 */
 	if (!hpet_address) {
-		printk(KERN_WARNING PREFIX
-		       "HPET id: %#x base: %#lx is invalid\n",
-		       hpet_tbl->id, hpet_address);
+		pr_warn("HPET id: %#x base: %#lx is invalid\n", hpet_tbl->id, hpet_address);
 		return 0;
 	}
 #ifdef CONFIG_X86_64
@@ -896,21 +891,17 @@ static int __init acpi_parse_hpet(struct acpi_table_header *table)
 	 */
 	if (hpet_address == 0xfed0000000000000UL) {
 		if (!hpet_force_user) {
-			printk(KERN_WARNING PREFIX "HPET id: %#x "
-			       "base: 0xfed0000000000000 is bogus\n "
-			       "try hpet=force on the kernel command line to "
-			       "fix it up to 0xfed00000.\n", hpet_tbl->id);
+			pr_warn("HPET id: %#x base: 0xfed0000000000000 is bogus, try hpet=force on the kernel command line to fix it up to 0xfed00000.\n",
+				hpet_tbl->id);
 			hpet_address = 0;
 			return 0;
 		}
-		printk(KERN_WARNING PREFIX
-		       "HPET id: %#x base: 0xfed0000000000000 fixed up "
-		       "to 0xfed00000.\n", hpet_tbl->id);
+		pr_warn("HPET id: %#x base: 0xfed0000000000000 fixed up to 0xfed00000.\n",
+			hpet_tbl->id);
 		hpet_address >>= 32;
 	}
 #endif
-	printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
-	       hpet_tbl->id, hpet_address);
+	pr_info("HPET id: %#x base: %#lx\n", hpet_tbl->id, hpet_address);
 
 	/*
 	 * Allocate and initialize the HPET firmware resource for adding into
@@ -955,24 +946,24 @@ late_initcall(hpet_insert_resource);
 static int __init acpi_parse_fadt(struct acpi_table_header *table)
 {
 	if (!(acpi_gbl_FADT.boot_flags & ACPI_FADT_LEGACY_DEVICES)) {
-		pr_debug("ACPI: no legacy devices present\n");
+		pr_debug("no legacy devices present\n");
 		x86_platform.legacy.devices.pnpbios = 0;
 	}
 
 	if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
 	    !(acpi_gbl_FADT.boot_flags & ACPI_FADT_8042) &&
 	    x86_platform.legacy.i8042 != X86_LEGACY_I8042_PLATFORM_ABSENT) {
-		pr_debug("ACPI: i8042 controller is absent\n");
+		pr_debug("i8042 controller is absent\n");
 		x86_platform.legacy.i8042 = X86_LEGACY_I8042_FIRMWARE_ABSENT;
 	}
 
 	if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_CMOS_RTC) {
-		pr_debug("ACPI: not registering RTC platform device\n");
+		pr_debug("not registering RTC platform device\n");
 		x86_platform.legacy.rtc = 0;
 	}
 
 	if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_VGA) {
-		pr_debug("ACPI: probing for VGA not safe\n");
+		pr_debug("probing for VGA not safe\n");
 		x86_platform.legacy.no_vga = 1;
 	}
 
@@ -997,8 +988,7 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
 		pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
 	}
 	if (pmtmr_ioport)
-		printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
-		       pmtmr_ioport);
+		pr_info("PM-Timer IO Port: %#x\n", pmtmr_ioport);
 #endif
 	return 0;
 }
@@ -1024,8 +1014,7 @@ static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
 	count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
 				      acpi_parse_lapic_addr_ovr, 0);
 	if (count < 0) {
-		printk(KERN_ERR PREFIX
-		       "Error parsing LAPIC address override entry\n");
+		pr_err("Error parsing LAPIC address override entry\n");
 		return count;
 	}
 
@@ -1057,8 +1046,7 @@ static int __init acpi_parse_madt_lapic_entries(void)
 				sizeof(struct acpi_table_madt),
 				madt_proc, ARRAY_SIZE(madt_proc), MAX_LOCAL_APIC);
 		if (ret < 0) {
-			printk(KERN_ERR PREFIX
-					"Error parsing LAPIC/X2APIC entries\n");
+			pr_err("Error parsing LAPIC/X2APIC entries\n");
 			return ret;
 		}
 
@@ -1066,11 +1054,11 @@ static int __init acpi_parse_madt_lapic_entries(void)
 		x2count = madt_proc[1].count;
 	}
 	if (!count && !x2count) {
-		printk(KERN_ERR PREFIX "No LAPIC entries present\n");
+		pr_err("No LAPIC entries present\n");
 		/* TBD: Cleanup to allow fallback to MPS */
 		return -ENODEV;
 	} else if (count < 0 || x2count < 0) {
-		printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
+		pr_err("Error parsing LAPIC entry\n");
 		/* TBD: Cleanup to allow fallback to MPS */
 		return count;
 	}
@@ -1080,7 +1068,7 @@ static int __init acpi_parse_madt_lapic_entries(void)
 	count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI,
 				      acpi_parse_lapic_nmi, 0);
 	if (count < 0 || x2count < 0) {
-		printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
+		pr_err("Error parsing LAPIC NMI entry\n");
 		/* TBD: Cleanup to allow fallback to MPS */
 		return count;
 	}
@@ -1139,7 +1127,7 @@ static void __init mp_config_acpi_legacy_irqs(void)
 		}
 
 		if (idx != mp_irq_entries) {
-			printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
+			pr_debug("ACPI: IRQ%d used by override.\n", i);
 			continue;	/* IRQ already used */
 		}
 
@@ -1179,26 +1167,24 @@ static int __init acpi_parse_madt_ioapic_entries(void)
 	 * if "noapic" boot option, don't look for IO-APICs
 	 */
 	if (skip_ioapic_setup) {
-		printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
-		       "due to 'noapic' option.\n");
+		pr_info("Skipping IOAPIC probe due to 'noapic' option.\n");
 		return -ENODEV;
 	}
 
 	count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
 				      MAX_IO_APICS);
 	if (!count) {
-		printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
+		pr_err("No IOAPIC entries present\n");
 		return -ENODEV;
 	} else if (count < 0) {
-		printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
+		pr_err("Error parsing IOAPIC entry\n");
 		return count;
 	}
 
 	count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE,
 				      acpi_parse_int_src_ovr, nr_irqs);
 	if (count < 0) {
-		printk(KERN_ERR PREFIX
-		       "Error parsing interrupt source overrides entry\n");
+		pr_err("Error parsing interrupt source overrides entry\n");
 		/* TBD: Cleanup to allow fallback to MPS */
 		return count;
 	}
@@ -1218,7 +1204,7 @@ static int __init acpi_parse_madt_ioapic_entries(void)
 	count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE,
 				      acpi_parse_nmi_src, nr_irqs);
 	if (count < 0) {
-		printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
+		pr_err("Error parsing NMI SRC entry\n");
 		/* TBD: Cleanup to allow fallback to MPS */
 		return count;
 	}
@@ -1251,8 +1237,7 @@ static void __init early_acpi_process_madt(void)
 			/*
 			 * Dell Precision Workstation 410, 610 come here.
 			 */
-			printk(KERN_ERR PREFIX
-			       "Invalid BIOS MADT, disabling ACPI\n");
+			pr_err("Invalid BIOS MADT, disabling ACPI\n");
 			disable_acpi();
 		}
 	}
@@ -1289,8 +1274,7 @@ static void __init acpi_process_madt(void)
 			/*
 			 * Dell Precision Workstation 410, 610 come here.
 			 */
-			printk(KERN_ERR PREFIX
-			       "Invalid BIOS MADT, disabling ACPI\n");
+			pr_err("Invalid BIOS MADT, disabling ACPI\n");
 			disable_acpi();
 		}
 	} else {
@@ -1300,8 +1284,7 @@ static void __init acpi_process_madt(void)
  		 * Boot with "acpi=off" to use MPS on such a system.
  		 */
 		if (smp_found_config) {
-			printk(KERN_WARNING PREFIX
-				"No APIC-table, disabling MPS\n");
+			pr_warn("No APIC-table, disabling MPS\n");
 			smp_found_config = 0;
 		}
 	}
@@ -1311,11 +1294,9 @@ static void __init acpi_process_madt(void)
 	 * processors, where MPS only supports physical.
 	 */
 	if (acpi_lapic && acpi_ioapic)
-		printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
-		       "information\n");
+		pr_info("Using ACPI (MADT) for SMP configuration information\n");
 	else if (acpi_lapic)
-		printk(KERN_INFO "Using ACPI for processor (LAPIC) "
-		       "configuration information\n");
+		pr_info("Using ACPI for processor (LAPIC) configuration information\n");
 #endif
 	return;
 }
@@ -1323,8 +1304,7 @@ static void __init acpi_process_madt(void)
 static int __init disable_acpi_irq(const struct dmi_system_id *d)
 {
 	if (!acpi_force) {
-		printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
-		       d->ident);
+		pr_notice("%s detected: force use of acpi=noirq\n", d->ident);
 		acpi_noirq_set();
 	}
 	return 0;
@@ -1333,8 +1313,7 @@ static int __init disable_acpi_irq(const struct dmi_system_id *d)
 static int __init disable_acpi_pci(const struct dmi_system_id *d)
 {
 	if (!acpi_force) {
-		printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
-		       d->ident);
+		pr_notice("%s detected: force use of pci=noacpi\n", d->ident);
 		acpi_disable_pci();
 	}
 	return 0;
@@ -1343,11 +1322,10 @@ static int __init disable_acpi_pci(const struct dmi_system_id *d)
 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
 {
 	if (!acpi_force) {
-		printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
+		pr_notice("%s detected: acpi off\n", d->ident);
 		disable_acpi();
 	} else {
-		printk(KERN_NOTICE
-		       "Warning: DMI blacklist says broken, but acpi forced\n");
+		pr_notice("Warning: DMI blacklist says broken, but acpi forced\n");
 	}
 	return 0;
 }
@@ -1574,9 +1552,9 @@ int __init early_acpi_boot_init(void)
 	 */
 	if (acpi_blacklisted()) {
 		if (acpi_force) {
-			printk(KERN_WARNING PREFIX "acpi=force override\n");
+			pr_warn("acpi=force override\n");
 		} else {
-			printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
+			pr_warn("Disabling ACPI support\n");
 			disable_acpi();
 			return 1;
 		}
@@ -1692,9 +1670,7 @@ int __init acpi_mps_check(void)
 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
 /* mptable code is not built-in*/
 	if (acpi_disabled || acpi_noirq) {
-		printk(KERN_WARNING "MPS support code is not built-in.\n"
-		       "Using acpi=off or acpi=noirq or pci=noacpi "
-		       "may have problem\n");
+		pr_warn("MPS support code is not built-in, using acpi=off or acpi=noirq or pci=noacpi may have problem\n");
 		return 1;
 	}
 #endif
diff --git a/arch/x86/kernel/cpu/perfctr-watchdog.c b/arch/x86/kernel/cpu/perfctr-watchdog.c
index 3ef5868ac588..7aecb2fc3186 100644
--- a/arch/x86/kernel/cpu/perfctr-watchdog.c
+++ b/arch/x86/kernel/cpu/perfctr-watchdog.c
@@ -63,7 +63,7 @@ static inline unsigned int nmi_perfctr_msr_to_bit(unsigned int msr)
 		case 15:
 			return msr - MSR_P4_BPU_PERFCTR0;
 		}
-		fallthrough;
+		break;
 	case X86_VENDOR_ZHAOXIN:
 	case X86_VENDOR_CENTAUR:
 		return msr - MSR_ARCH_PERFMON_PERFCTR0;
@@ -96,7 +96,7 @@ static inline unsigned int nmi_evntsel_msr_to_bit(unsigned int msr)
 		case 15:
 			return msr - MSR_P4_BSU_ESCR0;
 		}
-		fallthrough;
+		break;
 	case X86_VENDOR_ZHAOXIN:
 	case X86_VENDOR_CENTAUR:
 		return msr - MSR_ARCH_PERFMON_EVENTSEL0;
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 8120e8614b92..6d72d8f43310 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1494,6 +1494,15 @@ static void limit_periodic_timer_frequency(struct kvm_lapic *apic)
 
 static void cancel_hv_timer(struct kvm_lapic *apic);
 
+static void cancel_apic_timer(struct kvm_lapic *apic)
+{
+	hrtimer_cancel(&apic->lapic_timer.timer);
+	preempt_disable();
+	if (apic->lapic_timer.hv_timer_in_use)
+		cancel_hv_timer(apic);
+	preempt_enable();
+}
+
 static void apic_update_lvtt(struct kvm_lapic *apic)
 {
 	u32 timer_mode = kvm_lapic_get_reg(apic, APIC_LVTT) &
@@ -1502,11 +1511,7 @@ static void apic_update_lvtt(struct kvm_lapic *apic)
 	if (apic->lapic_timer.timer_mode != timer_mode) {
 		if (apic_lvtt_tscdeadline(apic) != (timer_mode ==
 				APIC_LVT_TIMER_TSCDEADLINE)) {
-			hrtimer_cancel(&apic->lapic_timer.timer);
-			preempt_disable();
-			if (apic->lapic_timer.hv_timer_in_use)
-				cancel_hv_timer(apic);
-			preempt_enable();
+			cancel_apic_timer(apic);
 			kvm_lapic_set_reg(apic, APIC_TMICT, 0);
 			apic->lapic_timer.period = 0;
 			apic->lapic_timer.tscdeadline = 0;
@@ -2092,7 +2097,7 @@ int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
 		if (apic_lvtt_tscdeadline(apic))
 			break;
 
-		hrtimer_cancel(&apic->lapic_timer.timer);
+		cancel_apic_timer(apic);
 		kvm_lapic_set_reg(apic, APIC_TMICT, val);
 		start_apic_timer(apic);
 		break;
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 70b7e44e3035..823a5919f9fa 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -90,8 +90,8 @@ struct guest_walker {
 	gpa_t pte_gpa[PT_MAX_FULL_LEVELS];
 	pt_element_t __user *ptep_user[PT_MAX_FULL_LEVELS];
 	bool pte_writable[PT_MAX_FULL_LEVELS];
-	unsigned pt_access;
-	unsigned pte_access;
+	unsigned int pt_access[PT_MAX_FULL_LEVELS];
+	unsigned int pte_access;
 	gfn_t gfn;
 	struct x86_exception fault;
 };
@@ -418,13 +418,15 @@ retry_walk:
 		}
 
 		walker->ptes[walker->level - 1] = pte;
+
+		/* Convert to ACC_*_MASK flags for struct guest_walker.  */
+		walker->pt_access[walker->level - 1] = FNAME(gpte_access)(pt_access ^ walk_nx_mask);
 	} while (!is_last_gpte(mmu, walker->level, pte));
 
 	pte_pkey = FNAME(gpte_pkeys)(vcpu, pte);
 	accessed_dirty = have_ad ? pte_access & PT_GUEST_ACCESSED_MASK : 0;
 
 	/* Convert to ACC_*_MASK flags for struct guest_walker.  */
-	walker->pt_access = FNAME(gpte_access)(pt_access ^ walk_nx_mask);
 	walker->pte_access = FNAME(gpte_access)(pte_access ^ walk_nx_mask);
 	errcode = permission_fault(vcpu, mmu, walker->pte_access, pte_pkey, access);
 	if (unlikely(errcode))
@@ -463,7 +465,8 @@ retry_walk:
 	}
 
 	pgprintk("%s: pte %llx pte_access %x pt_access %x\n",
-		 __func__, (u64)pte, walker->pte_access, walker->pt_access);
+		 __func__, (u64)pte, walker->pte_access,
+		 walker->pt_access[walker->level - 1]);
 	return 1;
 
 error:
@@ -643,7 +646,7 @@ static int FNAME(fetch)(struct kvm_vcpu *vcpu, gpa_t addr,
 	bool huge_page_disallowed = exec && nx_huge_page_workaround_enabled;
 	struct kvm_mmu_page *sp = NULL;
 	struct kvm_shadow_walk_iterator it;
-	unsigned direct_access, access = gw->pt_access;
+	unsigned int direct_access, access;
 	int top_level, level, req_level, ret;
 	gfn_t base_gfn = gw->gfn;
 
@@ -675,6 +678,7 @@ static int FNAME(fetch)(struct kvm_vcpu *vcpu, gpa_t addr,
 		sp = NULL;
 		if (!is_shadow_present_pte(*it.sptep)) {
 			table_gfn = gw->table_gfn[it.level - 2];
+			access = gw->pt_access[it.level - 2];
 			sp = kvm_mmu_get_page(vcpu, table_gfn, addr, it.level-1,
 					      false, access);
 		}
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 5bc887e9a986..e0ce5da97fc2 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -1103,10 +1103,9 @@ __sev_send_start_query_session_length(struct kvm *kvm, struct kvm_sev_cmd *argp,
 	struct sev_data_send_start data;
 	int ret;
 
+	memset(&data, 0, sizeof(data));
 	data.handle = sev->handle;
 	ret = sev_issue_cmd(kvm, SEV_CMD_SEND_START, &data, &argp->error);
-	if (ret < 0)
-		return ret;
 
 	params->session_len = data.session_len;
 	if (copy_to_user((void __user *)(uintptr_t)argp->data, params,
@@ -1215,10 +1214,9 @@ __sev_send_update_data_query_lengths(struct kvm *kvm, struct kvm_sev_cmd *argp,
 	struct sev_data_send_update_data data;
 	int ret;
 
+	memset(&data, 0, sizeof(data));
 	data.handle = sev->handle;
 	ret = sev_issue_cmd(kvm, SEV_CMD_SEND_UPDATE_DATA, &data, &argp->error);
-	if (ret < 0)
-		return ret;
 
 	params->hdr_len = data.hdr_len;
 	params->trans_len = data.trans_len;
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index a61c015870e3..4f839148948b 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -1550,16 +1550,16 @@ TRACE_EVENT(kvm_nested_vmenter_failed,
 	TP_ARGS(msg, err),
 
 	TP_STRUCT__entry(
-		__field(const char *, msg)
+		__string(msg, msg)
 		__field(u32, err)
 	),
 
 	TP_fast_assign(
-		__entry->msg = msg;
+		__assign_str(msg, msg);
 		__entry->err = err;
 	),
 
-	TP_printk("%s%s", __entry->msg, !__entry->err ? "" :
+	TP_printk("%s%s", __get_str(msg), !__entry->err ? "" :
 		__print_symbolic(__entry->err, VMX_VMENTER_INSTRUCTION_ERRORS))
 );
 
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b594275d49b5..6d3955a6a763 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3072,6 +3072,19 @@ static void kvm_vcpu_flush_tlb_all(struct kvm_vcpu *vcpu)
 static void kvm_vcpu_flush_tlb_guest(struct kvm_vcpu *vcpu)
 {
 	++vcpu->stat.tlb_flush;
+
+	if (!tdp_enabled) {
+               /*
+		 * A TLB flush on behalf of the guest is equivalent to
+		 * INVPCID(all), toggling CR4.PGE, etc., which requires
+		 * a forced sync of the shadow page tables.  Unload the
+		 * entire MMU here and the subsequent load will sync the
+		 * shadow page tables, and also flush the TLB.
+		 */
+		kvm_mmu_unload(vcpu);
+		return;
+	}
+
 	static_call(kvm_x86_tlb_flush_guest)(vcpu);
 }
 
@@ -3101,9 +3114,11 @@ static void record_steal_time(struct kvm_vcpu *vcpu)
 	 * expensive IPIs.
 	 */
 	if (guest_pv_has(vcpu, KVM_FEATURE_PV_TLB_FLUSH)) {
+		u8 st_preempted = xchg(&st->preempted, 0);
+
 		trace_kvm_pv_tlb_flush(vcpu->vcpu_id,
-				       st->preempted & KVM_VCPU_FLUSH_TLB);
-		if (xchg(&st->preempted, 0) & KVM_VCPU_FLUSH_TLB)
+				       st_preempted & KVM_VCPU_FLUSH_TLB);
+		if (st_preempted & KVM_VCPU_FLUSH_TLB)
 			kvm_vcpu_flush_tlb_guest(vcpu);
 	} else {
 		st->preempted = 0;