diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index c7b165c..dae68e6 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -855,7 +855,7 @@
 use PPIs designated for specific cpus.  The irq field is interpreted
 like this::
 
-  bits:  |  31 ... 28  | 27 ... 24 | 23  ... 16 | 15 ... 0 |
+  bits:  |  31 ... 28  | 27 ... 24 | 23  ... 16 | 15 ... 0 |
   field: | vcpu2_index | irq_type  | vcpu_index |  irq_id  |
 
 The irq_type field has the following values:
@@ -2149,10 +2149,10 @@
 Errors:
 
   ======   ============================================================
-  ENOENT   no such register
-  EINVAL   invalid register ID, or no such register or used with VMs in
+  ENOENT   no such register
+  EINVAL   invalid register ID, or no such register or used with VMs in
            protected virtualization mode on s390
-  EPERM    (arm64) register access not allowed before vcpu finalization
+  EPERM    (arm64) register access not allowed before vcpu finalization
   ======   ============================================================
 
 (These error codes are indicative only: do not rely on a specific error
@@ -2590,10 +2590,10 @@
 Errors include:
 
   ======== ============================================================
-  ENOENT   no such register
-  EINVAL   invalid register ID, or no such register or used with VMs in
+  ENOENT   no such register
+  EINVAL   invalid register ID, or no such register or used with VMs in
            protected virtualization mode on s390
-  EPERM    (arm64) register access not allowed before vcpu finalization
+  EPERM    (arm64) register access not allowed before vcpu finalization
   ======== ============================================================
 
 (These error codes are indicative only: do not rely on a specific error
@@ -3112,13 +3112,13 @@
 Errors:
 
   ======     =================================================================
-  EINVAL     the target is unknown, or the combination of features is invalid.
-  ENOENT     a features bit specified is unknown.
+  EINVAL     the target is unknown, or the combination of features is invalid.
+  ENOENT     a features bit specified is unknown.
   ======     =================================================================
 
 This tells KVM what type of CPU to present to the guest, and what
-optional features it should have.  This will cause a reset of the cpu
-registers to their initial values.  If this is not called, KVM_RUN will
+optional features it should have.  This will cause a reset of the cpu
+registers to their initial values.  If this is not called, KVM_RUN will
 return ENOEXEC for that vcpu.
 
 The initial values are defined as:
@@ -3239,8 +3239,8 @@
 Errors:
 
   =====      ==============================================================
-  E2BIG      the reg index list is too big to fit in the array specified by
-             the user (the number required will be written into n).
+  E2BIG      the reg index list is too big to fit in the array specified by
+             the user (the number required will be written into n).
   =====      ==============================================================
 
 ::
@@ -3288,7 +3288,7 @@
 ARM/arm64 divides the id field into two parts, a device id and an
 address type id specific to the individual device::
 
-  bits:  | 63        ...       32 | 31    ...    16 | 15    ...    0 |
+  bits:  | 63        ...       32 | 31    ...    16 | 15    ...    0 |
   field: |        0x00000000      |     device id   |  addr type id  |
 
 ARM/arm64 currently only require this when using the in-kernel GIC
@@ -7049,7 +7049,7 @@
 trap and emulate MSRs that are outside of the scope of KVM as well as
 limit the attack surface on KVM's MSR emulation code.
 
-8.28 KVM_CAP_ENFORCE_PV_CPUID
+8.28 KVM_CAP_ENFORCE_PV_FEATURE_CPUID
 -----------------------------
 
 Architectures: x86
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 77d3280..f4ffad7 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -532,7 +532,7 @@
 	  will run faster if you say N here.
 
 	  See also the SMP-HOWTO available at
-	  <http://www.tldp.org/docs.html#howto>.
+	  <https://www.tldp.org/docs.html#howto>.
 
 	  If you don't know what to do here, say N.
 
diff --git a/arch/alpha/boot/bootp.c b/arch/alpha/boot/bootp.c
index 00266e6e..b4faba2 100644
--- a/arch/alpha/boot/bootp.c
+++ b/arch/alpha/boot/bootp.c
@@ -23,7 +23,7 @@
 #include "ksize.h"
 
 extern unsigned long switch_to_osf_pal(unsigned long nr,
-	struct pcb_struct * pcb_va, struct pcb_struct * pcb_pa,
+	struct pcb_struct *pcb_va, struct pcb_struct *pcb_pa,
 	unsigned long *vptb);
 
 extern void move_stack(unsigned long new_stack);
diff --git a/arch/alpha/boot/bootpz.c b/arch/alpha/boot/bootpz.c
index 43af718..90a2b34 100644
--- a/arch/alpha/boot/bootpz.c
+++ b/arch/alpha/boot/bootpz.c
@@ -200,7 +200,7 @@
 	START_ADDR	KSEG address of the entry point of kernel code.
 
 	ZERO_PGE	KSEG address of page full of zeroes, but 
-			upon entry to kerne cvan be expected
+			upon entry to kernel, it can be expected
 			to hold the parameter list and possible
 			INTRD information.
 
diff --git a/arch/alpha/boot/misc.c b/arch/alpha/boot/misc.c
index d651922..325d4dd 100644
--- a/arch/alpha/boot/misc.c
+++ b/arch/alpha/boot/misc.c
@@ -30,7 +30,7 @@
      __attribute__ ((format (printf, 1, 2)));
 
 /*
- * gzip delarations
+ * gzip declarations
  */
 #define OF(args)  args
 #define STATIC static
diff --git a/arch/alpha/configs/defconfig b/arch/alpha/configs/defconfig
index dd2dd9f..7f1ca30 100644
--- a/arch/alpha/configs/defconfig
+++ b/arch/alpha/configs/defconfig
@@ -70,3 +70,4 @@
 CONFIG_ALPHA_LEGACY_START_ADDRESS=y
 CONFIG_MATHEMU=y
 CONFIG_CRYPTO_HMAC=y
+CONFIG_DEVTMPFS=y
diff --git a/arch/alpha/include/asm/compiler.h b/arch/alpha/include/asm/compiler.h
index 5159ba2..ae64595 100644
--- a/arch/alpha/include/asm/compiler.h
+++ b/arch/alpha/include/asm/compiler.h
@@ -4,15 +4,4 @@
 
 #include <uapi/asm/compiler.h>
 
-/* Some idiots over in <linux/compiler.h> thought inline should imply
-   always_inline.  This breaks stuff.  We'll include this file whenever
-   we run into such problems.  */
-
-#include <linux/compiler.h>
-#undef inline
-#undef __inline__
-#undef __inline
-#undef __always_inline
-#define __always_inline		inline __attribute__((always_inline))
-
 #endif /* __ALPHA_COMPILER_H */
diff --git a/arch/alpha/include/asm/syscall.h b/arch/alpha/include/asm/syscall.h
index 11c688c..f21baba 100644
--- a/arch/alpha/include/asm/syscall.h
+++ b/arch/alpha/include/asm/syscall.h
@@ -9,4 +9,10 @@
 	return AUDIT_ARCH_ALPHA;
 }
 
+static inline long syscall_get_return_value(struct task_struct *task,
+					    struct pt_regs *regs)
+{
+	return regs->r0;
+}
+
 #endif	/* _ASM_ALPHA_SYSCALL_H */
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index d5367a1..d31167e 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -834,7 +834,7 @@
 			return -EFAULT;
 		state = &current_thread_info()->ieee_state;
 
-		/* Update softare trap enable bits.  */
+		/* Update software trap enable bits.  */
 		*state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK);
 
 		/* Update the real fpcr.  */
@@ -854,7 +854,7 @@
 		state = &current_thread_info()->ieee_state;
 		exc &= IEEE_STATUS_MASK;
 
-		/* Update softare trap enable bits.  */
+		/* Update software trap enable bits.  */
  		swcr = (*state & IEEE_SW_MASK) | exc;
 		*state |= exc;
 
diff --git a/arch/alpha/kernel/perf_event.c b/arch/alpha/kernel/perf_event.c
index e7a59d9..efcf732 100644
--- a/arch/alpha/kernel/perf_event.c
+++ b/arch/alpha/kernel/perf_event.c
@@ -574,7 +574,7 @@
  * Check that CPU performance counters are supported.
  * - currently support EV67 and later CPUs.
  * - actually some later revisions of the EV6 have the same PMC model as the
- *     EV67 but we don't do suffiently deep CPU detection to detect them.
+ *     EV67 but we don't do sufficiently deep CPU detection to detect them.
  *     Bad luck to the very few people who might have one, I guess.
  */
 static int supported_cpu(void)
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index ef0c08e..a5123ea 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -256,7 +256,7 @@
 		childstack->r26 = (unsigned long) ret_from_kernel_thread;
 		childstack->r9 = usp;	/* function */
 		childstack->r10 = kthread_arg;
-		childregs->hae = alpha_mv.hae_cache,
+		childregs->hae = alpha_mv.hae_cache;
 		childti->pcb.usp = 0;
 		return 0;
 	}
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 7d56c21..b4fbbba 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -319,18 +319,19 @@
 		       i, cluster->usage, cluster->start_pfn,
 		       cluster->start_pfn + cluster->numpages);
 
-		/* Bit 0 is console/PALcode reserved.  Bit 1 is
-		   non-volatile memory -- we might want to mark
-		   this for later.  */
-		if (cluster->usage & 3)
-			continue;
-
 		end = cluster->start_pfn + cluster->numpages;
 		if (end > max_low_pfn)
 			max_low_pfn = end;
 
 		memblock_add(PFN_PHYS(cluster->start_pfn),
 			     cluster->numpages << PAGE_SHIFT);
+
+		/* Bit 0 is console/PALcode reserved.  Bit 1 is
+		   non-volatile memory -- we might want to mark
+		   this for later.  */
+		if (cluster->usage & 3)
+			memblock_reserve(PFN_PHYS(cluster->start_pfn),
+				         cluster->numpages << PAGE_SHIFT);
 	}
 
 	/*
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 4b2575f..cb64e47 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -582,7 +582,7 @@
 smp_send_stop(void)
 {
 	cpumask_t to_whom;
-	cpumask_copy(&to_whom, cpu_possible_mask);
+	cpumask_copy(&to_whom, cpu_online_mask);
 	cpumask_clear_cpu(smp_processor_id(), &to_whom);
 #ifdef DEBUG_IPI_MSG
 	if (hard_smp_processor_id() != boot_cpu_id)
diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index 53adf43..96fd6ff 100644
--- a/arch/alpha/kernel/sys_nautilus.c
+++ b/arch/alpha/kernel/sys_nautilus.c
@@ -212,7 +212,7 @@
 
 	/* Use default IO. */
 	pci_add_resource(&bridge->windows, &ioport_resource);
-	/* Irongate PCI memory aperture, calculate requred size before
+	/* Irongate PCI memory aperture, calculate required size before
 	   setting it up. */
 	pci_add_resource(&bridge->windows, &irongate_mem);
 
diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index 921d4b6..5398f982 100644
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -730,7 +730,7 @@
 	long error;
 
 	/* Check the UAC bits to decide what the user wants us to do
-	   with the unaliged access.  */
+	   with the unaligned access.  */
 
 	if (!(current_thread_info()->status & TS_UAC_NOPRINT)) {
 		if (__ratelimit(&ratelimit)) {
diff --git a/arch/alpha/math-emu/math.c b/arch/alpha/math-emu/math.c
index d568cd9a..f7cef66 100644
--- a/arch/alpha/math-emu/math.c
+++ b/arch/alpha/math-emu/math.c
@@ -65,7 +65,7 @@
 long do_alpha_fp_emul_imprecise(struct pt_regs *, unsigned long);
 long do_alpha_fp_emul(unsigned long);
 
-int init_module(void)
+static int alpha_fp_emul_init_module(void)
 {
 	save_emul_imprecise = alpha_fp_emul_imprecise;
 	save_emul = alpha_fp_emul;
@@ -73,12 +73,14 @@
 	alpha_fp_emul = do_alpha_fp_emul;
 	return 0;
 }
+module_init(alpha_fp_emul_init_module);
 
-void cleanup_module(void)
+static void alpha_fp_emul_cleanup_module(void)
 {
 	alpha_fp_emul_imprecise = save_emul_imprecise;
 	alpha_fp_emul = save_emul;
 }
+module_exit(alpha_fp_emul_cleanup_module);
 
 #undef  alpha_fp_emul_imprecise
 #define alpha_fp_emul_imprecise		do_alpha_fp_emul_imprecise
@@ -401,3 +403,5 @@
 egress:
 	return si_code;
 }
+
+EXPORT_SYMBOL(__udiv_qrnnd);
diff --git a/arch/arm/mach-rpc/riscpc.c b/arch/arm/mach-rpc/riscpc.c
index d23970b..f70fb9c 100644
--- a/arch/arm/mach-rpc/riscpc.c
+++ b/arch/arm/mach-rpc/riscpc.c
@@ -49,6 +49,7 @@
 		fallthrough;	/* ??? */
 	case 256:
 		vram_size += PAGE_SIZE * 256;
+		break;
 	default:
 		break;
 	}
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 3155c9e..0625bf2 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -947,7 +947,7 @@
 		vma_shift = get_vma_page_shift(vma, hva);
 	}
 
-	shared = (vma->vm_flags & VM_PFNMAP);
+	shared = (vma->vm_flags & VM_SHARED);
 
 	switch (vma_shift) {
 #ifndef __PAGETABLE_PMD_FOLDED
diff --git a/arch/m68k/coldfire/m525x.c b/arch/m68k/coldfire/m525x.c
index 2c4d2ca..4853751 100644
--- a/arch/m68k/coldfire/m525x.c
+++ b/arch/m68k/coldfire/m525x.c
@@ -26,7 +26,7 @@
 DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
 
 static struct clk_lookup m525x_clk_lookup[] = {
-	CLKDEV_INIT(NULL, "pll.0", &pll),
+	CLKDEV_INIT(NULL, "pll.0", &clk_pll),
 	CLKDEV_INIT(NULL, "sys.0", &clk_sys),
 	CLKDEV_INIT("mcftmr.0", NULL, &clk_sys),
 	CLKDEV_INIT("mcftmr.1", NULL, &clk_sys),
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 9b4473f..161a9e1 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -445,15 +445,15 @@
 	u64 instruction_sigp_init_cpu_reset;
 	u64 instruction_sigp_cpu_reset;
 	u64 instruction_sigp_unknown;
-	u64 diagnose_10;
-	u64 diagnose_44;
-	u64 diagnose_9c;
-	u64 diagnose_9c_ignored;
-	u64 diagnose_9c_forward;
-	u64 diagnose_258;
-	u64 diagnose_308;
-	u64 diagnose_500;
-	u64 diagnose_other;
+	u64 instruction_diagnose_10;
+	u64 instruction_diagnose_44;
+	u64 instruction_diagnose_9c;
+	u64 diag_9c_ignored;
+	u64 diag_9c_forward;
+	u64 instruction_diagnose_258;
+	u64 instruction_diagnose_308;
+	u64 instruction_diagnose_500;
+	u64 instruction_diagnose_other;
 	u64 pfault_sync;
 };
 
diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index 02c146f..807fa9d 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -24,7 +24,7 @@
 
 	start = vcpu->run->s.regs.gprs[(vcpu->arch.sie_block->ipa & 0xf0) >> 4];
 	end = vcpu->run->s.regs.gprs[vcpu->arch.sie_block->ipa & 0xf] + PAGE_SIZE;
-	vcpu->stat.diagnose_10++;
+	vcpu->stat.instruction_diagnose_10++;
 
 	if (start & ~PAGE_MASK || end & ~PAGE_MASK || start >= end
 	    || start < 2 * PAGE_SIZE)
@@ -74,7 +74,7 @@
 
 	VCPU_EVENT(vcpu, 3, "diag page reference parameter block at 0x%llx",
 		   vcpu->run->s.regs.gprs[rx]);
-	vcpu->stat.diagnose_258++;
+	vcpu->stat.instruction_diagnose_258++;
 	if (vcpu->run->s.regs.gprs[rx] & 7)
 		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
 	rc = read_guest(vcpu, vcpu->run->s.regs.gprs[rx], rx, &parm, sizeof(parm));
@@ -145,7 +145,7 @@
 static int __diag_time_slice_end(struct kvm_vcpu *vcpu)
 {
 	VCPU_EVENT(vcpu, 5, "%s", "diag time slice end");
-	vcpu->stat.diagnose_44++;
+	vcpu->stat.instruction_diagnose_44++;
 	kvm_vcpu_on_spin(vcpu, true);
 	return 0;
 }
@@ -169,7 +169,7 @@
 	int tid;
 
 	tid = vcpu->run->s.regs.gprs[(vcpu->arch.sie_block->ipa & 0xf0) >> 4];
-	vcpu->stat.diagnose_9c++;
+	vcpu->stat.instruction_diagnose_9c++;
 
 	/* yield to self */
 	if (tid == vcpu->vcpu_id)
@@ -192,7 +192,7 @@
 		VCPU_EVENT(vcpu, 5,
 			   "diag time slice end directed to %d: yield forwarded",
 			   tid);
-		vcpu->stat.diagnose_9c_forward++;
+		vcpu->stat.diag_9c_forward++;
 		return 0;
 	}
 
@@ -203,7 +203,7 @@
 	return 0;
 no_yield:
 	VCPU_EVENT(vcpu, 5, "diag time slice end directed to %d: ignored", tid);
-	vcpu->stat.diagnose_9c_ignored++;
+	vcpu->stat.diag_9c_ignored++;
 	return 0;
 }
 
@@ -213,7 +213,7 @@
 	unsigned long subcode = vcpu->run->s.regs.gprs[reg] & 0xffff;
 
 	VCPU_EVENT(vcpu, 3, "diag ipl functions, subcode %lx", subcode);
-	vcpu->stat.diagnose_308++;
+	vcpu->stat.instruction_diagnose_308++;
 	switch (subcode) {
 	case 3:
 		vcpu->run->s390_reset_flags = KVM_S390_RESET_CLEAR;
@@ -245,7 +245,7 @@
 {
 	int ret;
 
-	vcpu->stat.diagnose_500++;
+	vcpu->stat.instruction_diagnose_500++;
 	/* No virtio-ccw notification? Get out quickly. */
 	if (!vcpu->kvm->arch.css_support ||
 	    (vcpu->run->s.regs.gprs[1] != KVM_S390_VIRTIO_CCW_NOTIFY))
@@ -299,7 +299,7 @@
 	case 0x500:
 		return __diag_virtio_hypercall(vcpu);
 	default:
-		vcpu->stat.diagnose_other++;
+		vcpu->stat.instruction_diagnose_other++;
 		return -EOPNOTSUPP;
 	}
 }
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index b655a7d..4527ac7b 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -163,15 +163,15 @@
 	STATS_DESC_COUNTER(VCPU, instruction_sigp_init_cpu_reset),
 	STATS_DESC_COUNTER(VCPU, instruction_sigp_cpu_reset),
 	STATS_DESC_COUNTER(VCPU, instruction_sigp_unknown),
-	STATS_DESC_COUNTER(VCPU, diagnose_10),
-	STATS_DESC_COUNTER(VCPU, diagnose_44),
-	STATS_DESC_COUNTER(VCPU, diagnose_9c),
-	STATS_DESC_COUNTER(VCPU, diagnose_9c_ignored),
-	STATS_DESC_COUNTER(VCPU, diagnose_9c_forward),
-	STATS_DESC_COUNTER(VCPU, diagnose_258),
-	STATS_DESC_COUNTER(VCPU, diagnose_308),
-	STATS_DESC_COUNTER(VCPU, diagnose_500),
-	STATS_DESC_COUNTER(VCPU, diagnose_other),
+	STATS_DESC_COUNTER(VCPU, instruction_diagnose_10),
+	STATS_DESC_COUNTER(VCPU, instruction_diagnose_44),
+	STATS_DESC_COUNTER(VCPU, instruction_diagnose_9c),
+	STATS_DESC_COUNTER(VCPU, diag_9c_ignored),
+	STATS_DESC_COUNTER(VCPU, diag_9c_forward),
+	STATS_DESC_COUNTER(VCPU, instruction_diagnose_258),
+	STATS_DESC_COUNTER(VCPU, instruction_diagnose_308),
+	STATS_DESC_COUNTER(VCPU, instruction_diagnose_500),
+	STATS_DESC_COUNTER(VCPU, instruction_diagnose_other),
 	STATS_DESC_COUNTER(VCPU, pfault_sync)
 };
 static_assert(ARRAY_SIZE(kvm_vcpu_stats_desc) ==
diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
index 698969e..ff005fe 100644
--- a/arch/x86/kvm/ioapic.c
+++ b/arch/x86/kvm/ioapic.c
@@ -96,7 +96,7 @@
 static void rtc_irq_eoi_tracking_reset(struct kvm_ioapic *ioapic)
 {
 	ioapic->rtc_status.pending_eoi = 0;
-	bitmap_zero(ioapic->rtc_status.dest_map.map, KVM_MAX_VCPU_ID);
+	bitmap_zero(ioapic->rtc_status.dest_map.map, KVM_MAX_VCPU_ID + 1);
 }
 
 static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic);
diff --git a/arch/x86/kvm/ioapic.h b/arch/x86/kvm/ioapic.h
index 6604017..11e4065 100644
--- a/arch/x86/kvm/ioapic.h
+++ b/arch/x86/kvm/ioapic.h
@@ -43,13 +43,13 @@
 
 struct dest_map {
 	/* vcpu bitmap where IRQ has been sent */
-	DECLARE_BITMAP(map, KVM_MAX_VCPU_ID);
+	DECLARE_BITMAP(map, KVM_MAX_VCPU_ID + 1);
 
 	/*
 	 * Vector sent to a given vcpu, only valid when
 	 * the vcpu's bit in map is set
 	 */
-	u8 vectors[KVM_MAX_VCPU_ID];
+	u8 vectors[KVM_MAX_VCPU_ID + 1];
 };
 
 
diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c
index 1d01da6..a8ad78a 100644
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
@@ -646,7 +646,7 @@
 void svm_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
 {
 	struct vcpu_svm *svm = to_svm(vcpu);
-	struct vmcb *vmcb = svm->vmcb;
+	struct vmcb *vmcb = svm->vmcb01.ptr;
 	bool activated = kvm_vcpu_apicv_active(vcpu);
 
 	if (!enable_apicv)
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 3bd09c5..61738ff 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -515,7 +515,7 @@
 	 * Also covers avic_vapic_bar, avic_backing_page, avic_logical_id,
 	 * avic_physical_id.
 	 */
-	WARN_ON(svm->vmcb01.ptr->control.int_ctl & AVIC_ENABLE_MASK);
+	WARN_ON(kvm_apicv_activated(svm->vcpu.kvm));
 
 	/* Copied from vmcb01.  msrpm_base can be overwritten later.  */
 	svm->vmcb->control.nested_ctl = svm->vmcb01.ptr->control.nested_ctl;
@@ -702,8 +702,8 @@
 }
 
 /* Copy state save area fields which are handled by VMRUN */
-void svm_copy_vmrun_state(struct vmcb_save_area *from_save,
-			  struct vmcb_save_area *to_save)
+void svm_copy_vmrun_state(struct vmcb_save_area *to_save,
+			  struct vmcb_save_area *from_save)
 {
 	to_save->es = from_save->es;
 	to_save->cs = from_save->cs;
@@ -722,7 +722,7 @@
 	to_save->cpl = 0;
 }
 
-void nested_svm_vmloadsave(struct vmcb *from_vmcb, struct vmcb *to_vmcb)
+void svm_copy_vmloadsave_state(struct vmcb *to_vmcb, struct vmcb *from_vmcb)
 {
 	to_vmcb->save.fs = from_vmcb->save.fs;
 	to_vmcb->save.gs = from_vmcb->save.gs;
@@ -1385,7 +1385,7 @@
 
 	svm->nested.vmcb12_gpa = kvm_state->hdr.svm.vmcb_pa;
 
-	svm_copy_vmrun_state(save, &svm->vmcb01.ptr->save);
+	svm_copy_vmrun_state(&svm->vmcb01.ptr->save, save);
 	nested_load_control_from_vmcb12(svm, ctl);
 
 	svm_switch_vmcb(svm, &svm->nested.vmcb02);
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 664d20f..e8ccab5 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1406,8 +1406,6 @@
 		goto error_free_vmsa_page;
 	}
 
-	svm_vcpu_init_msrpm(vcpu, svm->msrpm);
-
 	svm->vmcb01.ptr = page_address(vmcb01_page);
 	svm->vmcb01.pa = __sme_set(page_to_pfn(vmcb01_page) << PAGE_SHIFT);
 
@@ -1419,6 +1417,8 @@
 	svm_switch_vmcb(svm, &svm->vmcb01);
 	init_vmcb(vcpu);
 
+	svm_vcpu_init_msrpm(vcpu, svm->msrpm);
+
 	svm_init_osvw(vcpu);
 	vcpu->arch.microcode_version = 0x01000065;
 
@@ -1568,8 +1568,11 @@
 {
 	struct vmcb_control_area *control;
 
-	/* The following fields are ignored when AVIC is enabled */
-	WARN_ON(kvm_vcpu_apicv_active(&svm->vcpu));
+	/*
+	 * The following fields are ignored when AVIC is enabled
+	 */
+	WARN_ON(kvm_apicv_activated(svm->vcpu.kvm));
+
 	svm_set_intercept(svm, INTERCEPT_VINTR);
 
 	/*
@@ -2147,11 +2150,12 @@
 	ret = kvm_skip_emulated_instruction(vcpu);
 
 	if (vmload) {
-		nested_svm_vmloadsave(vmcb12, svm->vmcb);
+		svm_copy_vmloadsave_state(svm->vmcb, vmcb12);
 		svm->sysenter_eip_hi = 0;
 		svm->sysenter_esp_hi = 0;
-	} else
-		nested_svm_vmloadsave(svm->vmcb, vmcb12);
+	} else {
+		svm_copy_vmloadsave_state(vmcb12, svm->vmcb);
+	}
 
 	kvm_vcpu_unmap(vcpu, &map, true);
 
@@ -4344,8 +4348,8 @@
 
 		BUILD_BUG_ON(offsetof(struct vmcb, save) != 0x400);
 
-		svm_copy_vmrun_state(&svm->vmcb01.ptr->save,
-				     map_save.hva + 0x400);
+		svm_copy_vmrun_state(map_save.hva + 0x400,
+				     &svm->vmcb01.ptr->save);
 
 		kvm_vcpu_unmap(vcpu, &map_save, true);
 	}
@@ -4393,8 +4397,8 @@
 					 &map_save) == -EINVAL)
 				return 1;
 
-			svm_copy_vmrun_state(map_save.hva + 0x400,
-					     &svm->vmcb01.ptr->save);
+			svm_copy_vmrun_state(&svm->vmcb01.ptr->save,
+					     map_save.hva + 0x400);
 
 			kvm_vcpu_unmap(vcpu, &map_save, true);
 		}
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 7e20907..bd0fe94 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -464,9 +464,9 @@
 void svm_free_nested(struct vcpu_svm *svm);
 int svm_allocate_nested(struct vcpu_svm *svm);
 int nested_svm_vmrun(struct kvm_vcpu *vcpu);
-void svm_copy_vmrun_state(struct vmcb_save_area *from_save,
-			  struct vmcb_save_area *to_save);
-void nested_svm_vmloadsave(struct vmcb *from_vmcb, struct vmcb *to_vmcb);
+void svm_copy_vmrun_state(struct vmcb_save_area *to_save,
+			  struct vmcb_save_area *from_save);
+void svm_copy_vmloadsave_state(struct vmcb *to_vmcb, struct vmcb *from_vmcb);
 int nested_svm_vmexit(struct vcpu_svm *svm);
 
 static inline int nested_svm_simple_vmexit(struct vcpu_svm *svm, u32 exit_code)
diff --git a/arch/x86/kvm/svm/svm_onhyperv.h b/arch/x86/kvm/svm/svm_onhyperv.h
index 9b9a55a..c53b8bf 100644
--- a/arch/x86/kvm/svm/svm_onhyperv.h
+++ b/arch/x86/kvm/svm/svm_onhyperv.h
@@ -89,7 +89,7 @@
 	 * as we mark it dirty unconditionally towards end of vcpu
 	 * init phase.
 	 */
-	if (vmcb && vmcb_is_clean(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS) &&
+	if (vmcb_is_clean(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS) &&
 	    hve->hv_enlightenments_control.msr_bitmap)
 		vmcb_mark_dirty(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS);
 }
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index a4fd106..4116567 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3407,7 +3407,7 @@
 			return 1;
 		break;
 	case MSR_KVM_ASYNC_PF_ACK:
-		if (!guest_pv_has(vcpu, KVM_FEATURE_ASYNC_PF))
+		if (!guest_pv_has(vcpu, KVM_FEATURE_ASYNC_PF_INT))
 			return 1;
 		if (data & 0x1) {
 			vcpu->arch.apf.pageready_pending = false;
@@ -3746,7 +3746,7 @@
 		msr_info->data = vcpu->arch.apf.msr_int_val;
 		break;
 	case MSR_KVM_ASYNC_PF_ACK:
-		if (!guest_pv_has(vcpu, KVM_FEATURE_ASYNC_PF))
+		if (!guest_pv_has(vcpu, KVM_FEATURE_ASYNC_PF_INT))
 			return 1;
 
 		msr_info->data = 0;
diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index d567402..a8688a9 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -120,6 +120,7 @@
 	if (!chip_ctx)
 		return -ENOMEM;
 	chip_ctx->chip_num = bp->chip_num;
+	chip_ctx->hw_stats_size = bp->hw_ring_stats_size;
 
 	rdev->chip_ctx = chip_ctx;
 	/* rest members to follow eventually */
@@ -550,6 +551,7 @@
 				       dma_addr_t dma_map,
 				       u32 *fw_stats_ctx_id)
 {
+	struct bnxt_qplib_chip_ctx *chip_ctx = rdev->chip_ctx;
 	struct hwrm_stat_ctx_alloc_output resp = {0};
 	struct hwrm_stat_ctx_alloc_input req = {0};
 	struct bnxt_en_dev *en_dev = rdev->en_dev;
@@ -566,7 +568,7 @@
 	bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_ALLOC, -1, -1);
 	req.update_period_ms = cpu_to_le32(1000);
 	req.stats_dma_addr = cpu_to_le64(dma_map);
-	req.stats_dma_length = cpu_to_le16(sizeof(struct ctx_hw_stats_ext));
+	req.stats_dma_length = cpu_to_le16(chip_ctx->hw_stats_size);
 	req.stat_ctx_flags = STAT_CTX_ALLOC_REQ_STAT_CTX_FLAGS_ROCE;
 	bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
 			    sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.c b/drivers/infiniband/hw/bnxt_re/qplib_res.c
index 17f0701..44282a8 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.c
@@ -56,6 +56,7 @@
 static void bnxt_qplib_free_stats_ctx(struct pci_dev *pdev,
 				      struct bnxt_qplib_stats *stats);
 static int bnxt_qplib_alloc_stats_ctx(struct pci_dev *pdev,
+				      struct bnxt_qplib_chip_ctx *cctx,
 				      struct bnxt_qplib_stats *stats);
 
 /* PBL */
@@ -559,7 +560,7 @@
 		goto fail;
 stats_alloc:
 	/* Stats */
-	rc = bnxt_qplib_alloc_stats_ctx(res->pdev, &ctx->stats);
+	rc = bnxt_qplib_alloc_stats_ctx(res->pdev, res->cctx, &ctx->stats);
 	if (rc)
 		goto fail;
 
@@ -889,15 +890,12 @@
 }
 
 static int bnxt_qplib_alloc_stats_ctx(struct pci_dev *pdev,
+				      struct bnxt_qplib_chip_ctx *cctx,
 				      struct bnxt_qplib_stats *stats)
 {
 	memset(stats, 0, sizeof(*stats));
 	stats->fw_id = -1;
-	/* 128 byte aligned context memory is required only for 57500.
-	 * However making this unconditional, it does not harm previous
-	 * generation.
-	 */
-	stats->size = ALIGN(sizeof(struct ctx_hw_stats), 128);
+	stats->size = cctx->hw_stats_size;
 	stats->dma = dma_alloc_coherent(&pdev->dev, stats->size,
 					&stats->dma_map, GFP_KERNEL);
 	if (!stats->dma) {
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h
index c291f49..9103150 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h
@@ -54,6 +54,7 @@
 	u16	chip_num;
 	u8	chip_rev;
 	u8	chip_metal;
+	u16	hw_stats_size;
 	struct bnxt_qplib_drv_modes modes;
 };
 
diff --git a/drivers/infiniband/hw/irdma/ctrl.c b/drivers/infiniband/hw/irdma/ctrl.c
index b1023a7d..f1e5515 100644
--- a/drivers/infiniband/hw/irdma/ctrl.c
+++ b/drivers/infiniband/hw/irdma/ctrl.c
@@ -2845,7 +2845,7 @@
  * parses fpm commit info and copy base value
  * of hmc objects in hmc_info
  */
-static enum irdma_status_code
+static void
 irdma_sc_parse_fpm_commit_buf(struct irdma_sc_dev *dev, __le64 *buf,
 			      struct irdma_hmc_obj_info *info, u32 *sd)
 {
@@ -2915,7 +2915,6 @@
 	else
 		*sd = (u32)(size >> 21);
 
-	return 0;
 }
 
 /**
@@ -4187,11 +4186,9 @@
  * @dev: sc device struct
  * @count: allocate count
  */
-enum irdma_status_code irdma_sc_repost_aeq_entries(struct irdma_sc_dev *dev, u32 count)
+void irdma_sc_repost_aeq_entries(struct irdma_sc_dev *dev, u32 count)
 {
 	writel(count, dev->hw_regs[IRDMA_AEQALLOC]);
-
-	return 0;
 }
 
 /**
@@ -4434,9 +4431,9 @@
 	ret_code = irdma_sc_commit_fpm_val(dev->cqp, 0, hmc_info->hmc_fn_id,
 					   &commit_fpm_mem, true, wait_type);
 	if (!ret_code)
-		ret_code = irdma_sc_parse_fpm_commit_buf(dev, dev->fpm_commit_buf,
-							 hmc_info->hmc_obj,
-							 &hmc_info->sd_table.sd_cnt);
+		irdma_sc_parse_fpm_commit_buf(dev, dev->fpm_commit_buf,
+					      hmc_info->hmc_obj,
+					      &hmc_info->sd_table.sd_cnt);
 	print_hex_dump_debug("HMC: COMMIT FPM BUFFER", DUMP_PREFIX_OFFSET, 16,
 			     8, commit_fpm_mem.va, IRDMA_COMMIT_FPM_BUF_SIZE,
 			     false);
diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c
index 7afb8a6..00de5ee 100644
--- a/drivers/infiniband/hw/irdma/hw.c
+++ b/drivers/infiniband/hw/irdma/hw.c
@@ -1920,7 +1920,7 @@
  * irdma_set_hw_rsrc - set hw memory resources.
  * @rf: RDMA PCI function
  */
-static u32 irdma_set_hw_rsrc(struct irdma_pci_f *rf)
+static void irdma_set_hw_rsrc(struct irdma_pci_f *rf)
 {
 	rf->allocated_qps = (void *)(rf->mem_rsrc +
 		   (sizeof(struct irdma_arp_entry) * rf->arp_table_size));
@@ -1937,8 +1937,6 @@
 	spin_lock_init(&rf->arp_lock);
 	spin_lock_init(&rf->qptable_lock);
 	spin_lock_init(&rf->qh_list_lock);
-
-	return 0;
 }
 
 /**
@@ -2000,9 +1998,7 @@
 
 	rf->arp_table = (struct irdma_arp_entry *)rf->mem_rsrc;
 
-	ret = irdma_set_hw_rsrc(rf);
-	if (ret)
-		goto set_hw_rsrc_fail;
+	irdma_set_hw_rsrc(rf);
 
 	set_bit(0, rf->allocated_mrs);
 	set_bit(0, rf->allocated_qps);
@@ -2025,9 +2021,6 @@
 
 	return 0;
 
-set_hw_rsrc_fail:
-	kfree(rf->mem_rsrc);
-	rf->mem_rsrc = NULL;
 mem_rsrc_kzalloc_fail:
 	kfree(rf->allocated_ws_nodes);
 	rf->allocated_ws_nodes = NULL;
diff --git a/drivers/infiniband/hw/irdma/main.c b/drivers/infiniband/hw/irdma/main.c
index ea59432..51a4135 100644
--- a/drivers/infiniband/hw/irdma/main.c
+++ b/drivers/infiniband/hw/irdma/main.c
@@ -215,10 +215,10 @@
 	pr_debug("INIT: Gen2 PF[%d] device remove success\n", PCI_FUNC(pf->pdev->devfn));
 }
 
-static void irdma_fill_device_info(struct irdma_device *iwdev, struct ice_pf *pf)
+static void irdma_fill_device_info(struct irdma_device *iwdev, struct ice_pf *pf,
+				   struct ice_vsi *vsi)
 {
 	struct irdma_pci_f *rf = iwdev->rf;
-	struct ice_vsi *vsi = ice_get_main_vsi(pf);
 
 	rf->cdev = pf;
 	rf->gen_ops.register_qset = irdma_lan_register_qset;
@@ -253,12 +253,15 @@
 							    struct iidc_auxiliary_dev,
 							    adev);
 	struct ice_pf *pf = iidc_adev->pf;
+	struct ice_vsi *vsi = ice_get_main_vsi(pf);
 	struct iidc_qos_params qos_info = {};
 	struct irdma_device *iwdev;
 	struct irdma_pci_f *rf;
 	struct irdma_l2params l2params = {};
 	int err;
 
+	if (!vsi)
+		return -EIO;
 	iwdev = ib_alloc_device(irdma_device, ibdev);
 	if (!iwdev)
 		return -ENOMEM;
@@ -268,7 +271,7 @@
 		return -ENOMEM;
 	}
 
-	irdma_fill_device_info(iwdev, pf);
+	irdma_fill_device_info(iwdev, pf, vsi);
 	rf = iwdev->rf;
 
 	if (irdma_ctrl_init_hw(rf)) {
diff --git a/drivers/infiniband/hw/irdma/type.h b/drivers/infiniband/hw/irdma/type.h
index 7387b83..874bc25 100644
--- a/drivers/infiniband/hw/irdma/type.h
+++ b/drivers/infiniband/hw/irdma/type.h
@@ -1222,8 +1222,7 @@
 					 struct irdma_aeq_init_info *info);
 enum irdma_status_code irdma_sc_get_next_aeqe(struct irdma_sc_aeq *aeq,
 					      struct irdma_aeqe_info *info);
-enum irdma_status_code irdma_sc_repost_aeq_entries(struct irdma_sc_dev *dev,
-						   u32 count);
+void irdma_sc_repost_aeq_entries(struct irdma_sc_dev *dev, u32 count);
 
 void irdma_sc_pd_init(struct irdma_sc_dev *dev, struct irdma_sc_pd *pd, u32 pd_id,
 		      int abi_ver);
diff --git a/drivers/infiniband/hw/irdma/uk.c b/drivers/infiniband/hw/irdma/uk.c
index a6d52c2..5fb92de 100644
--- a/drivers/infiniband/hw/irdma/uk.c
+++ b/drivers/infiniband/hw/irdma/uk.c
@@ -931,7 +931,7 @@
 enum irdma_status_code irdma_uk_post_receive(struct irdma_qp_uk *qp,
 					     struct irdma_post_rq_info *info)
 {
-	u32 total_size = 0, wqe_idx, i, byte_off;
+	u32 wqe_idx, i, byte_off;
 	u32 addl_frag_cnt;
 	__le64 *wqe;
 	u64 hdr;
@@ -939,9 +939,6 @@
 	if (qp->max_rq_frag_cnt < info->num_sges)
 		return IRDMA_ERR_INVALID_FRAG_COUNT;
 
-	for (i = 0; i < info->num_sges; i++)
-		total_size += info->sg_list[i].len;
-
 	wqe = irdma_qp_get_next_recv_wqe(qp, &wqe_idx);
 	if (!wqe)
 		return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index 9712f69..717147e 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -557,7 +557,7 @@
  * @iwqp: qp ptr
  * @init_info: initialize info to return
  */
-static int irdma_setup_virt_qp(struct irdma_device *iwdev,
+static void irdma_setup_virt_qp(struct irdma_device *iwdev,
 			       struct irdma_qp *iwqp,
 			       struct irdma_qp_init_info *init_info)
 {
@@ -574,8 +574,6 @@
 		init_info->sq_pa = qpmr->sq_pbl.addr;
 		init_info->rq_pa = qpmr->rq_pbl.addr;
 	}
-
-	return 0;
 }
 
 /**
@@ -914,7 +912,7 @@
 			}
 		}
 		init_info.qp_uk_init_info.abi_ver = iwpd->sc_pd.abi_ver;
-		err_code = irdma_setup_virt_qp(iwdev, iwqp, &init_info);
+		irdma_setup_virt_qp(iwdev, iwqp, &init_info);
 	} else {
 		init_info.qp_uk_init_info.abi_ver = IRDMA_ABI_VER;
 		err_code = irdma_setup_kmode_qp(iwdev, iwqp, &init_info, init_attr);
diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c
index 6aabcb4..be4bcb4 100644
--- a/drivers/infiniband/sw/rxe/rxe_mr.c
+++ b/drivers/infiniband/sw/rxe/rxe_mr.c
@@ -113,13 +113,14 @@
 	int			num_buf;
 	void			*vaddr;
 	int err;
+	int i;
 
 	umem = ib_umem_get(pd->ibpd.device, start, length, access);
 	if (IS_ERR(umem)) {
-		pr_warn("err %d from rxe_umem_get\n",
-			(int)PTR_ERR(umem));
+		pr_warn("%s: Unable to pin memory region err = %d\n",
+			__func__, (int)PTR_ERR(umem));
 		err = PTR_ERR(umem);
-		goto err1;
+		goto err_out;
 	}
 
 	mr->umem = umem;
@@ -129,9 +130,9 @@
 
 	err = rxe_mr_alloc(mr, num_buf);
 	if (err) {
-		pr_warn("err %d from rxe_mr_alloc\n", err);
-		ib_umem_release(umem);
-		goto err1;
+		pr_warn("%s: Unable to allocate memory for map\n",
+				__func__);
+		goto err_release_umem;
 	}
 
 	mr->page_shift = PAGE_SHIFT;
@@ -151,10 +152,10 @@
 
 			vaddr = page_address(sg_page_iter_page(&sg_iter));
 			if (!vaddr) {
-				pr_warn("null vaddr\n");
-				ib_umem_release(umem);
+				pr_warn("%s: Unable to get virtual address\n",
+						__func__);
 				err = -ENOMEM;
-				goto err1;
+				goto err_cleanup_map;
 			}
 
 			buf->addr = (uintptr_t)vaddr;
@@ -177,7 +178,13 @@
 
 	return 0;
 
-err1:
+err_cleanup_map:
+	for (i = 0; i < mr->num_map; i++)
+		kfree(mr->map[i]);
+	kfree(mr->map);
+err_release_umem:
+	ib_umem_release(umem);
+err_out:
 	return err;
 }
 
diff --git a/drivers/platform/x86/amd-pmc.c b/drivers/platform/x86/amd-pmc.c
index b9da58e..3481479 100644
--- a/drivers/platform/x86/amd-pmc.c
+++ b/drivers/platform/x86/amd-pmc.c
@@ -46,34 +46,79 @@
 #define AMD_PMC_RESULT_CMD_UNKNOWN           0xFE
 #define AMD_PMC_RESULT_FAILED                0xFF
 
+/* FCH SSC Registers */
+#define FCH_S0I3_ENTRY_TIME_L_OFFSET	0x30
+#define FCH_S0I3_ENTRY_TIME_H_OFFSET	0x34
+#define FCH_S0I3_EXIT_TIME_L_OFFSET	0x38
+#define FCH_S0I3_EXIT_TIME_H_OFFSET	0x3C
+#define FCH_SSC_MAPPING_SIZE		0x800
+#define FCH_BASE_PHY_ADDR_LOW		0xFED81100
+#define FCH_BASE_PHY_ADDR_HIGH		0x00000000
+
+/* SMU Message Definations */
+#define SMU_MSG_GETSMUVERSION		0x02
+#define SMU_MSG_LOG_GETDRAM_ADDR_HI	0x04
+#define SMU_MSG_LOG_GETDRAM_ADDR_LO	0x05
+#define SMU_MSG_LOG_START		0x06
+#define SMU_MSG_LOG_RESET		0x07
+#define SMU_MSG_LOG_DUMP_DATA		0x08
+#define SMU_MSG_GET_SUP_CONSTRAINTS	0x09
 /* List of supported CPU ids */
 #define AMD_CPU_ID_RV			0x15D0
 #define AMD_CPU_ID_RN			0x1630
 #define AMD_CPU_ID_PCO			AMD_CPU_ID_RV
 #define AMD_CPU_ID_CZN			AMD_CPU_ID_RN
+#define AMD_CPU_ID_YC			0x14B5
 
-#define AMD_SMU_FW_VERSION		0x0
 #define PMC_MSG_DELAY_MIN_US		100
 #define RESPONSE_REGISTER_LOOP_MAX	200
 
+#define SOC_SUBSYSTEM_IP_MAX	12
+#define DELAY_MIN_US		2000
+#define DELAY_MAX_US		3000
 enum amd_pmc_def {
 	MSG_TEST = 0x01,
 	MSG_OS_HINT_PCO,
 	MSG_OS_HINT_RN,
 };
 
+struct amd_pmc_bit_map {
+	const char *name;
+	u32 bit_mask;
+};
+
+static const struct amd_pmc_bit_map soc15_ip_blk[] = {
+	{"DISPLAY",	BIT(0)},
+	{"CPU",		BIT(1)},
+	{"GFX",		BIT(2)},
+	{"VDD",		BIT(3)},
+	{"ACP",		BIT(4)},
+	{"VCN",		BIT(5)},
+	{"ISP",		BIT(6)},
+	{"NBIO",	BIT(7)},
+	{"DF",		BIT(8)},
+	{"USB0",	BIT(9)},
+	{"USB1",	BIT(10)},
+	{"LAPIC",	BIT(11)},
+	{}
+};
+
 struct amd_pmc_dev {
 	void __iomem *regbase;
-	void __iomem *smu_base;
+	void __iomem *smu_virt_addr;
+	void __iomem *fch_virt_addr;
 	u32 base_addr;
 	u32 cpu_id;
+	u32 active_ips;
 	struct device *dev;
+	struct mutex lock; /* generic mutex lock */
 #if IS_ENABLED(CONFIG_DEBUG_FS)
 	struct dentry *dbgfs_dir;
 #endif /* CONFIG_DEBUG_FS */
 };
 
 static struct amd_pmc_dev pmc;
+static int amd_pmc_send_cmd(struct amd_pmc_dev *dev, bool set, u32 *data, u8 msg, bool ret);
 
 static inline u32 amd_pmc_reg_read(struct amd_pmc_dev *dev, int reg_offset)
 {
@@ -85,18 +130,77 @@
 	iowrite32(val, dev->regbase + reg_offset);
 }
 
+struct smu_metrics {
+	u32 table_version;
+	u32 hint_count;
+	u32 s0i3_cyclecount;
+	u32 timein_s0i2;
+	u64 timeentering_s0i3_lastcapture;
+	u64 timeentering_s0i3_totaltime;
+	u64 timeto_resume_to_os_lastcapture;
+	u64 timeto_resume_to_os_totaltime;
+	u64 timein_s0i3_lastcapture;
+	u64 timein_s0i3_totaltime;
+	u64 timein_swdrips_lastcapture;
+	u64 timein_swdrips_totaltime;
+	u64 timecondition_notmet_lastcapture[SOC_SUBSYSTEM_IP_MAX];
+	u64 timecondition_notmet_totaltime[SOC_SUBSYSTEM_IP_MAX];
+} __packed;
+
 #ifdef CONFIG_DEBUG_FS
 static int smu_fw_info_show(struct seq_file *s, void *unused)
 {
 	struct amd_pmc_dev *dev = s->private;
-	u32 value;
+	struct smu_metrics table;
+	int idx;
 
-	value = ioread32(dev->smu_base + AMD_SMU_FW_VERSION);
-	seq_printf(s, "SMU FW Info: %x\n", value);
+	if (dev->cpu_id == AMD_CPU_ID_PCO)
+		return -EINVAL;
+
+	memcpy_fromio(&table, dev->smu_virt_addr, sizeof(struct smu_metrics));
+
+	seq_puts(s, "\n=== SMU Statistics ===\n");
+	seq_printf(s, "Table Version: %d\n", table.table_version);
+	seq_printf(s, "Hint Count: %d\n", table.hint_count);
+	seq_printf(s, "S0i3 Cycle Count: %d\n", table.s0i3_cyclecount);
+	seq_printf(s, "Time (in us) to S0i3: %lld\n", table.timeentering_s0i3_lastcapture);
+	seq_printf(s, "Time (in us) in S0i3: %lld\n", table.timein_s0i3_lastcapture);
+
+	seq_puts(s, "\n=== Active time (in us) ===\n");
+	for (idx = 0 ; idx < SOC_SUBSYSTEM_IP_MAX ; idx++) {
+		if (soc15_ip_blk[idx].bit_mask & dev->active_ips)
+			seq_printf(s, "%-8s : %lld\n", soc15_ip_blk[idx].name,
+				   table.timecondition_notmet_lastcapture[idx]);
+	}
+
 	return 0;
 }
 DEFINE_SHOW_ATTRIBUTE(smu_fw_info);
 
+static int s0ix_stats_show(struct seq_file *s, void *unused)
+{
+	struct amd_pmc_dev *dev = s->private;
+	u64 entry_time, exit_time, residency;
+
+	entry_time = ioread32(dev->fch_virt_addr + FCH_S0I3_ENTRY_TIME_H_OFFSET);
+	entry_time = entry_time << 32 | ioread32(dev->fch_virt_addr + FCH_S0I3_ENTRY_TIME_L_OFFSET);
+
+	exit_time = ioread32(dev->fch_virt_addr + FCH_S0I3_EXIT_TIME_H_OFFSET);
+	exit_time = exit_time << 32 | ioread32(dev->fch_virt_addr + FCH_S0I3_EXIT_TIME_L_OFFSET);
+
+	/* It's in 48MHz. We need to convert it */
+	residency = exit_time - entry_time;
+	do_div(residency, 48);
+
+	seq_puts(s, "=== S0ix statistics ===\n");
+	seq_printf(s, "S0ix Entry Time: %lld\n", entry_time);
+	seq_printf(s, "S0ix Exit Time: %lld\n", exit_time);
+	seq_printf(s, "Residency Time: %lld\n", residency);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(s0ix_stats);
+
 static void amd_pmc_dbgfs_unregister(struct amd_pmc_dev *dev)
 {
 	debugfs_remove_recursive(dev->dbgfs_dir);
@@ -107,6 +211,8 @@
 	dev->dbgfs_dir = debugfs_create_dir("amd_pmc", NULL);
 	debugfs_create_file("smu_fw_info", 0644, dev->dbgfs_dir, dev,
 			    &smu_fw_info_fops);
+	debugfs_create_file("s0ix_stats", 0644, dev->dbgfs_dir, dev,
+			    &s0ix_stats_fops);
 }
 #else
 static inline void amd_pmc_dbgfs_register(struct amd_pmc_dev *dev)
@@ -118,6 +224,32 @@
 }
 #endif /* CONFIG_DEBUG_FS */
 
+static int amd_pmc_setup_smu_logging(struct amd_pmc_dev *dev)
+{
+	u32 phys_addr_low, phys_addr_hi;
+	u64 smu_phys_addr;
+
+	if (dev->cpu_id == AMD_CPU_ID_PCO)
+		return -EINVAL;
+
+	/* Get Active devices list from SMU */
+	amd_pmc_send_cmd(dev, 0, &dev->active_ips, SMU_MSG_GET_SUP_CONSTRAINTS, 1);
+
+	/* Get dram address */
+	amd_pmc_send_cmd(dev, 0, &phys_addr_low, SMU_MSG_LOG_GETDRAM_ADDR_LO, 1);
+	amd_pmc_send_cmd(dev, 0, &phys_addr_hi, SMU_MSG_LOG_GETDRAM_ADDR_HI, 1);
+	smu_phys_addr = ((u64)phys_addr_hi << 32 | phys_addr_low);
+
+	dev->smu_virt_addr = devm_ioremap(dev->dev, smu_phys_addr, sizeof(struct smu_metrics));
+	if (!dev->smu_virt_addr)
+		return -ENOMEM;
+
+	/* Start the logging */
+	amd_pmc_send_cmd(dev, 0, NULL, SMU_MSG_LOG_START, 0);
+
+	return 0;
+}
+
 static void amd_pmc_dump_registers(struct amd_pmc_dev *dev)
 {
 	u32 value;
@@ -132,19 +264,19 @@
 	dev_dbg(dev->dev, "AMD_PMC_REGISTER_MESSAGE:%x\n", value);
 }
 
-static int amd_pmc_send_cmd(struct amd_pmc_dev *dev, bool set)
+static int amd_pmc_send_cmd(struct amd_pmc_dev *dev, bool set, u32 *data, u8 msg, bool ret)
 {
 	int rc;
-	u8 msg;
 	u32 val;
 
+	mutex_lock(&dev->lock);
 	/* Wait until we get a valid response */
 	rc = readx_poll_timeout(ioread32, dev->regbase + AMD_PMC_REGISTER_RESPONSE,
-				val, val > 0, PMC_MSG_DELAY_MIN_US,
+				val, val != 0, PMC_MSG_DELAY_MIN_US,
 				PMC_MSG_DELAY_MIN_US * RESPONSE_REGISTER_LOOP_MAX);
 	if (rc) {
 		dev_err(dev->dev, "failed to talk to SMU\n");
-		return rc;
+		goto out_unlock;
 	}
 
 	/* Write zero to response register */
@@ -154,34 +286,91 @@
 	amd_pmc_reg_write(dev, AMD_PMC_REGISTER_ARGUMENT, set);
 
 	/* Write message ID to message ID register */
-	msg = (dev->cpu_id == AMD_CPU_ID_RN) ? MSG_OS_HINT_RN : MSG_OS_HINT_PCO;
 	amd_pmc_reg_write(dev, AMD_PMC_REGISTER_MESSAGE, msg);
-	return 0;
+
+	/* Wait until we get a valid response */
+	rc = readx_poll_timeout(ioread32, dev->regbase + AMD_PMC_REGISTER_RESPONSE,
+				val, val != 0, PMC_MSG_DELAY_MIN_US,
+				PMC_MSG_DELAY_MIN_US * RESPONSE_REGISTER_LOOP_MAX);
+	if (rc) {
+		dev_err(dev->dev, "SMU response timed out\n");
+		goto out_unlock;
+	}
+
+	switch (val) {
+	case AMD_PMC_RESULT_OK:
+		if (ret) {
+			/* PMFW may take longer time to return back the data */
+			usleep_range(DELAY_MIN_US, 10 * DELAY_MAX_US);
+			*data = amd_pmc_reg_read(dev, AMD_PMC_REGISTER_ARGUMENT);
+		}
+		break;
+	case AMD_PMC_RESULT_CMD_REJECT_BUSY:
+		dev_err(dev->dev, "SMU not ready. err: 0x%x\n", val);
+		rc = -EBUSY;
+		goto out_unlock;
+	case AMD_PMC_RESULT_CMD_UNKNOWN:
+		dev_err(dev->dev, "SMU cmd unknown. err: 0x%x\n", val);
+		rc = -EINVAL;
+		goto out_unlock;
+	case AMD_PMC_RESULT_CMD_REJECT_PREREQ:
+	case AMD_PMC_RESULT_FAILED:
+	default:
+		dev_err(dev->dev, "SMU cmd failed. err: 0x%x\n", val);
+		rc = -EIO;
+		goto out_unlock;
+	}
+
+out_unlock:
+	mutex_unlock(&dev->lock);
+	amd_pmc_dump_registers(dev);
+	return rc;
+}
+
+static int amd_pmc_get_os_hint(struct amd_pmc_dev *dev)
+{
+	switch (dev->cpu_id) {
+	case AMD_CPU_ID_PCO:
+		return MSG_OS_HINT_PCO;
+	case AMD_CPU_ID_RN:
+	case AMD_CPU_ID_YC:
+		return MSG_OS_HINT_RN;
+	}
+	return -EINVAL;
 }
 
 static int __maybe_unused amd_pmc_suspend(struct device *dev)
 {
 	struct amd_pmc_dev *pdev = dev_get_drvdata(dev);
 	int rc;
+	u8 msg;
 
-	rc = amd_pmc_send_cmd(pdev, 1);
+	/* Reset and Start SMU logging - to monitor the s0i3 stats */
+	amd_pmc_send_cmd(pdev, 0, NULL, SMU_MSG_LOG_RESET, 0);
+	amd_pmc_send_cmd(pdev, 0, NULL, SMU_MSG_LOG_START, 0);
+
+	msg = amd_pmc_get_os_hint(pdev);
+	rc = amd_pmc_send_cmd(pdev, 1, NULL, msg, 0);
 	if (rc)
 		dev_err(pdev->dev, "suspend failed\n");
 
-	amd_pmc_dump_registers(pdev);
-	return 0;
+	return rc;
 }
 
 static int __maybe_unused amd_pmc_resume(struct device *dev)
 {
 	struct amd_pmc_dev *pdev = dev_get_drvdata(dev);
 	int rc;
+	u8 msg;
 
-	rc = amd_pmc_send_cmd(pdev, 0);
+	/* Let SMU know that we are looking for stats */
+	amd_pmc_send_cmd(pdev, 0, NULL, SMU_MSG_LOG_DUMP_DATA, 0);
+
+	msg = amd_pmc_get_os_hint(pdev);
+	rc = amd_pmc_send_cmd(pdev, 0, NULL, msg, 0);
 	if (rc)
 		dev_err(pdev->dev, "resume failed\n");
 
-	amd_pmc_dump_registers(pdev);
 	return 0;
 }
 
@@ -190,6 +379,7 @@
 };
 
 static const struct pci_device_id pmc_pci_ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_YC) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_CZN) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_RN) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_PCO) },
@@ -201,9 +391,8 @@
 {
 	struct amd_pmc_dev *dev = &pmc;
 	struct pci_dev *rdev;
-	u32 base_addr_lo;
-	u32 base_addr_hi;
-	u64 base_addr;
+	u32 base_addr_lo, base_addr_hi;
+	u64 base_addr, fch_phys_addr;
 	int err;
 	u32 val;
 
@@ -248,16 +437,25 @@
 	pci_dev_put(rdev);
 	base_addr = ((u64)base_addr_hi << 32 | base_addr_lo);
 
-	dev->smu_base = devm_ioremap(dev->dev, base_addr, AMD_PMC_MAPPING_SIZE);
-	if (!dev->smu_base)
-		return -ENOMEM;
-
 	dev->regbase = devm_ioremap(dev->dev, base_addr + AMD_PMC_BASE_ADDR_OFFSET,
 				    AMD_PMC_MAPPING_SIZE);
 	if (!dev->regbase)
 		return -ENOMEM;
 
-	amd_pmc_dump_registers(dev);
+	mutex_init(&dev->lock);
+
+	/* Use FCH registers to get the S0ix stats */
+	base_addr_lo = FCH_BASE_PHY_ADDR_LOW;
+	base_addr_hi = FCH_BASE_PHY_ADDR_HIGH;
+	fch_phys_addr = ((u64)base_addr_hi << 32 | base_addr_lo);
+	dev->fch_virt_addr = devm_ioremap(dev->dev, fch_phys_addr, FCH_SSC_MAPPING_SIZE);
+	if (!dev->fch_virt_addr)
+		return -ENOMEM;
+
+	/* Use SMU to get the s0i3 debug stats */
+	err = amd_pmc_setup_smu_logging(dev);
+	if (err)
+		dev_err(dev->dev, "SMU debugging info not supported on this platform\n");
 
 	platform_set_drvdata(pdev, dev);
 	amd_pmc_dbgfs_register(dev);
@@ -269,11 +467,14 @@
 	struct amd_pmc_dev *dev = platform_get_drvdata(pdev);
 
 	amd_pmc_dbgfs_unregister(dev);
+	mutex_destroy(&dev->lock);
 	return 0;
 }
 
 static const struct acpi_device_id amd_pmc_acpi_ids[] = {
 	{"AMDI0005", 0},
+	{"AMDI0006", 0},
+	{"AMDI0007", 0},
 	{"AMD0004", 0},
 	{ }
 };
diff --git a/drivers/platform/x86/gigabyte-wmi.c b/drivers/platform/x86/gigabyte-wmi.c
index 5529d7b..fbb224a 100644
--- a/drivers/platform/x86/gigabyte-wmi.c
+++ b/drivers/platform/x86/gigabyte-wmi.c
@@ -141,6 +141,7 @@
 
 static const struct dmi_system_id gigabyte_wmi_known_working_platforms[] = {
 	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("B550 AORUS ELITE"),
+	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("B550 AORUS ELITE V2"),
 	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("B550 GAMING X V2"),
 	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("B550M AORUS PRO-P"),
 	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("B550M DS3H"),
diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c
index 078648a..e5fbe017 100644
--- a/drivers/platform/x86/intel-hid.c
+++ b/drivers/platform/x86/intel-hid.c
@@ -25,6 +25,7 @@
 	{"INT33D5", 0},
 	{"INTC1051", 0},
 	{"INTC1054", 0},
+	{"INTC1070", 0},
 	{"", 0},
 };
 MODULE_DEVICE_TABLE(acpi, intel_hid_ids);
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
index 3671b5d..6cfed44 100644
--- a/drivers/platform/x86/think-lmi.c
+++ b/drivers/platform/x86/think-lmi.c
@@ -571,6 +571,11 @@
 	else
 		ret = tlmi_save_bios_settings("");
 
+	if (!ret && !tlmi_priv.pending_changes) {
+		tlmi_priv.pending_changes = true;
+		/* let userland know it may need to check reboot pending again */
+		kobject_uevent(&tlmi_priv.class_dev->kobj, KOBJ_CHANGE);
+	}
 out:
 	kfree(auth_str);
 	kfree(set_str);
@@ -647,6 +652,14 @@
 	.sysfs_ops	= &tlmi_kobj_sysfs_ops,
 };
 
+static ssize_t pending_reboot_show(struct kobject *kobj, struct kobj_attribute *attr,
+				   char *buf)
+{
+	return sprintf(buf, "%d\n", tlmi_priv.pending_changes);
+}
+
+static struct kobj_attribute pending_reboot = __ATTR_RO(pending_reboot);
+
 /* ---- Initialisation --------------------------------------------------------- */
 static void tlmi_release_attr(void)
 {
@@ -659,6 +672,7 @@
 			kobject_put(&tlmi_priv.setting[i]->kobj);
 		}
 	}
+	sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &pending_reboot.attr);
 	kset_unregister(tlmi_priv.attribute_kset);
 
 	/* Authentication structures */
@@ -709,8 +723,8 @@
 
 		/* Build attribute */
 		tlmi_priv.setting[i]->kobj.kset = tlmi_priv.attribute_kset;
-		ret = kobject_init_and_add(&tlmi_priv.setting[i]->kobj, &tlmi_attr_setting_ktype,
-				NULL, "%s", tlmi_priv.setting[i]->display_name);
+		ret = kobject_add(&tlmi_priv.setting[i]->kobj, NULL,
+				  "%s", tlmi_priv.setting[i]->display_name);
 		if (ret)
 			goto fail_create_attr;
 
@@ -719,6 +733,10 @@
 			goto fail_create_attr;
 	}
 
+	ret = sysfs_create_file(&tlmi_priv.attribute_kset->kobj, &pending_reboot.attr);
+	if (ret)
+		goto fail_create_attr;
+
 	/* Create authentication entries */
 	tlmi_priv.authentication_kset = kset_create_and_add("authentication", NULL,
 								&tlmi_priv.class_dev->kobj);
@@ -727,8 +745,7 @@
 		goto fail_create_attr;
 	}
 	tlmi_priv.pwd_admin->kobj.kset = tlmi_priv.authentication_kset;
-	ret = kobject_init_and_add(&tlmi_priv.pwd_admin->kobj, &tlmi_pwd_setting_ktype,
-			NULL, "%s", "Admin");
+	ret = kobject_add(&tlmi_priv.pwd_admin->kobj, NULL, "%s", "Admin");
 	if (ret)
 		goto fail_create_attr;
 
@@ -737,8 +754,7 @@
 		goto fail_create_attr;
 
 	tlmi_priv.pwd_power->kobj.kset = tlmi_priv.authentication_kset;
-	ret = kobject_init_and_add(&tlmi_priv.pwd_power->kobj, &tlmi_pwd_setting_ktype,
-			NULL, "%s", "System");
+	ret = kobject_add(&tlmi_priv.pwd_power->kobj, NULL, "%s", "System");
 	if (ret)
 		goto fail_create_attr;
 
@@ -818,6 +834,7 @@
 				pr_info("Error retrieving possible values for %d : %s\n",
 						i, setting->display_name);
 		}
+		kobject_init(&setting->kobj, &tlmi_attr_setting_ktype);
 		tlmi_priv.setting[i] = setting;
 		tlmi_priv.settings_count++;
 		kfree(item);
@@ -844,10 +861,12 @@
 	if (pwdcfg.password_state & TLMI_PAP_PWD)
 		tlmi_priv.pwd_admin->valid = true;
 
+	kobject_init(&tlmi_priv.pwd_admin->kobj, &tlmi_pwd_setting_ktype);
+
 	tlmi_priv.pwd_power = kzalloc(sizeof(struct tlmi_pwd_setting), GFP_KERNEL);
 	if (!tlmi_priv.pwd_power) {
 		ret = -ENOMEM;
-		goto fail_clear_attr;
+		goto fail_free_pwd_admin;
 	}
 	strscpy(tlmi_priv.pwd_power->kbdlang, "us", TLMI_LANG_MAXLEN);
 	tlmi_priv.pwd_power->encoding = TLMI_ENCODING_ASCII;
@@ -859,11 +878,19 @@
 	if (pwdcfg.password_state & TLMI_POP_PWD)
 		tlmi_priv.pwd_power->valid = true;
 
+	kobject_init(&tlmi_priv.pwd_power->kobj, &tlmi_pwd_setting_ktype);
+
 	return 0;
 
+fail_free_pwd_admin:
+	kfree(tlmi_priv.pwd_admin);
 fail_clear_attr:
-	for (i = 0; i < TLMI_SETTINGS_COUNT; ++i)
-		kfree(tlmi_priv.setting[i]);
+	for (i = 0; i < TLMI_SETTINGS_COUNT; ++i) {
+		if (tlmi_priv.setting[i]) {
+			kfree(tlmi_priv.setting[i]->possible_values);
+			kfree(tlmi_priv.setting[i]);
+		}
+	}
 	return ret;
 }
 
diff --git a/drivers/platform/x86/think-lmi.h b/drivers/platform/x86/think-lmi.h
index 6fa8da7..eb59884 100644
--- a/drivers/platform/x86/think-lmi.h
+++ b/drivers/platform/x86/think-lmi.h
@@ -60,6 +60,7 @@
 	bool can_get_bios_selections;
 	bool can_set_bios_password;
 	bool can_get_password_settings;
+	bool pending_changes;
 
 	struct tlmi_attr_setting *setting[TLMI_SETTINGS_COUNT];
 	struct device *class_dev;
diff --git a/drivers/platform/x86/wireless-hotkey.c b/drivers/platform/x86/wireless-hotkey.c
index b010e4c..11c60a2 100644
--- a/drivers/platform/x86/wireless-hotkey.c
+++ b/drivers/platform/x86/wireless-hotkey.c
@@ -78,7 +78,7 @@
 
 	err = wireless_input_setup();
 	if (err)
-		pr_err("Failed to setup hp wireless hotkeys\n");
+		pr_err("Failed to setup wireless hotkeys\n");
 
 	return err;
 }
diff --git a/drivers/scsi/arm/acornscsi.c b/drivers/scsi/arm/acornscsi.c
index 84fc7a0..4a84599 100644
--- a/drivers/scsi/arm/acornscsi.c
+++ b/drivers/scsi/arm/acornscsi.c
@@ -2642,6 +2642,7 @@
 //#endif
 		clear_bit(SCpnt->device->id * 8 +
 			  (u8)(SCpnt->device->lun & 0x7), host->busyluns);
+		fallthrough;
 
 	/*
 	 * We found the command, and cleared it out.  Either
diff --git a/drivers/scsi/arm/fas216.c b/drivers/scsi/arm/fas216.c
index 6baa9b3..9c4458a 100644
--- a/drivers/scsi/arm/fas216.c
+++ b/drivers/scsi/arm/fas216.c
@@ -1375,6 +1375,7 @@
 		case IS_COMPLETE:
 			break;
 		}
+		break;
 
 	default:
 		break;
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 06fb7a9..4d5ae61 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -168,21 +168,6 @@
 	  with v4 shared libraries freely available from Compaq. If you're
 	  going to use shared libraries from Tru64 version 5.0 or later, say N.
 
-config BINFMT_EM86
-	tristate "Kernel support for Linux/Intel ELF binaries"
-	depends on ALPHA
-	help
-	  Say Y here if you want to be able to execute Linux/Intel ELF
-	  binaries just like native Alpha binaries on your Alpha machine. For
-	  this to work, you need to have the emulator /usr/bin/em86 in place.
-
-	  You can get the same functionality by saying N here and saying Y to
-	  "Kernel support for MISC binaries".
-
-	  You may answer M to compile the emulation support as a module and
-	  later load the module when you want to use a Linux/Intel binary. The
-	  module will be called binfmt_em86. If unsure, say Y.
-
 config BINFMT_MISC
 	tristate "Kernel support for MISC binaries"
 	help
diff --git a/fs/Makefile b/fs/Makefile
index 9c708e1..f98f3e6 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -39,7 +39,6 @@
 obj-$(CONFIG_FS_VERITY)		+= verity/
 obj-$(CONFIG_FILE_LOCKING)      += locks.o
 obj-$(CONFIG_BINFMT_AOUT)	+= binfmt_aout.o
-obj-$(CONFIG_BINFMT_EM86)	+= binfmt_em86.o
 obj-$(CONFIG_BINFMT_MISC)	+= binfmt_misc.o
 obj-$(CONFIG_BINFMT_SCRIPT)	+= binfmt_script.o
 obj-$(CONFIG_BINFMT_ELF)	+= binfmt_elf.o
diff --git a/fs/binfmt_em86.c b/fs/binfmt_em86.c
deleted file mode 100644
index 06b9b9fd..0000000
--- a/fs/binfmt_em86.c
+++ /dev/null
@@ -1,110 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  linux/fs/binfmt_em86.c
- *
- *  Based on linux/fs/binfmt_script.c
- *  Copyright (C) 1996  Martin von Löwis
- *  original #!-checking implemented by tytso.
- *
- *  em86 changes Copyright (C) 1997  Jim Paradis
- */
-
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/binfmts.h>
-#include <linux/elf.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/errno.h>
-
-
-#define EM86_INTERP	"/usr/bin/em86"
-#define EM86_I_NAME	"em86"
-
-static int load_em86(struct linux_binprm *bprm)
-{
-	const char *i_name, *i_arg;
-	char *interp;
-	struct file * file;
-	int retval;
-	struct elfhdr	elf_ex;
-
-	/* Make sure this is a Linux/Intel ELF executable... */
-	elf_ex = *((struct elfhdr *)bprm->buf);
-
-	if (memcmp(elf_ex.e_ident, ELFMAG, SELFMAG) != 0)
-		return  -ENOEXEC;
-
-	/* First of all, some simple consistency checks */
-	if ((elf_ex.e_type != ET_EXEC && elf_ex.e_type != ET_DYN) ||
-		(!((elf_ex.e_machine == EM_386) || (elf_ex.e_machine == EM_486))) ||
-		!bprm->file->f_op->mmap) {
-			return -ENOEXEC;
-	}
-
-	/* Need to be able to load the file after exec */
-	if (bprm->interp_flags & BINPRM_FLAGS_PATH_INACCESSIBLE)
-		return -ENOENT;
-
-	/* Unlike in the script case, we don't have to do any hairy
-	 * parsing to find our interpreter... it's hardcoded!
-	 */
-	interp = EM86_INTERP;
-	i_name = EM86_I_NAME;
-	i_arg = NULL;		/* We reserve the right to add an arg later */
-
-	/*
-	 * Splice in (1) the interpreter's name for argv[0]
-	 *           (2) (optional) argument to interpreter
-	 *           (3) filename of emulated file (replace argv[0])
-	 *
-	 * This is done in reverse order, because of how the
-	 * user environment and arguments are stored.
-	 */
-	remove_arg_zero(bprm);
-	retval = copy_string_kernel(bprm->filename, bprm);
-	if (retval < 0) return retval; 
-	bprm->argc++;
-	if (i_arg) {
-		retval = copy_string_kernel(i_arg, bprm);
-		if (retval < 0) return retval; 
-		bprm->argc++;
-	}
-	retval = copy_string_kernel(i_name, bprm);
-	if (retval < 0)	return retval;
-	bprm->argc++;
-
-	/*
-	 * OK, now restart the process with the interpreter's inode.
-	 * Note that we use open_exec() as the name is now in kernel
-	 * space, and we don't need to copy it.
-	 */
-	file = open_exec(interp);
-	if (IS_ERR(file))
-		return PTR_ERR(file);
-
-	bprm->interpreter = file;
-	return 0;
-}
-
-static struct linux_binfmt em86_format = {
-	.module		= THIS_MODULE,
-	.load_binary	= load_em86,
-};
-
-static int __init init_em86_binfmt(void)
-{
-	register_binfmt(&em86_format);
-	return 0;
-}
-
-static void __exit exit_em86_binfmt(void)
-{
-	unregister_binfmt(&em86_format);
-}
-
-core_initcall(init_em86_binfmt);
-module_exit(exit_em86_binfmt);
-MODULE_LICENSE("GPL");
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 14292db..2c2f179 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -106,12 +106,11 @@
 	return err;
 }
 
-static bool ext2_check_page(struct page *page, int quiet)
+static bool ext2_check_page(struct page *page, int quiet, char *kaddr)
 {
 	struct inode *dir = page->mapping->host;
 	struct super_block *sb = dir->i_sb;
 	unsigned chunk_size = ext2_chunk_size(dir);
-	char *kaddr = page_address(page);
 	u32 max_inumber = le32_to_cpu(EXT2_SB(sb)->s_es->s_inodes_count);
 	unsigned offs, rec_len;
 	unsigned limit = PAGE_SIZE;
@@ -205,7 +204,8 @@
 	if (!IS_ERR(page)) {
 		*page_addr = kmap_local_page(page);
 		if (unlikely(!PageChecked(page))) {
-			if (PageError(page) || !ext2_check_page(page, quiet))
+			if (PageError(page) || !ext2_check_page(page, quiet,
+								*page_addr))
 				goto fail;
 		}
 	}
@@ -584,10 +584,10 @@
  * ext2_delete_entry deletes a directory entry by merging it with the
  * previous entry. Page is up-to-date.
  */
-int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
+int ext2_delete_entry (struct ext2_dir_entry_2 *dir, struct page *page,
+			char *kaddr)
 {
 	struct inode *inode = page->mapping->host;
-	char *kaddr = page_address(page);
 	unsigned from = ((char*)dir - kaddr) & ~(ext2_chunk_size(inode)-1);
 	unsigned to = ((char *)dir - kaddr) +
 				ext2_rec_len_from_disk(dir->rec_len);
@@ -607,7 +607,7 @@
 		de = ext2_next_entry(de);
 	}
 	if (pde)
-		from = (char*)pde - (char*)page_address(page);
+		from = (char *)pde - kaddr;
 	pos = page_offset(page) + from;
 	lock_page(page);
 	err = ext2_prepare_chunk(page, pos, to - from);
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index b0a6948..e512630 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -740,7 +740,8 @@
 extern int ext2_make_empty(struct inode *, struct inode *);
 extern struct ext2_dir_entry_2 *ext2_find_entry(struct inode *, const struct qstr *,
 						struct page **, void **res_page_addr);
-extern int ext2_delete_entry (struct ext2_dir_entry_2 *, struct page *);
+extern int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page,
+			     char *kaddr);
 extern int ext2_empty_dir (struct inode *);
 extern struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p, void **pa);
 extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, void *,
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 1f69b81..5f6b756 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -293,7 +293,7 @@
 		goto out;
 	}
 
-	err = ext2_delete_entry (de, page);
+	err = ext2_delete_entry (de, page, page_addr);
 	ext2_put_page(page, page_addr);
 	if (err)
 		goto out;
@@ -397,7 +397,7 @@
 	old_inode->i_ctime = current_time(old_inode);
 	mark_inode_dirty(old_inode);
 
-	ext2_delete_entry(old_de, old_page);
+	ext2_delete_entry(old_de, old_page, old_page_addr);
 
 	if (dir_de) {
 		if (old_dir != new_dir)
diff --git a/fs/internal.h b/fs/internal.h
index 3ce8edb..82e8eb3 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -61,7 +61,6 @@
  */
 extern const struct fs_context_operations legacy_fs_context_ops;
 extern int parse_monolithic_mount_data(struct fs_context *, void *);
-extern void fc_drop_locked(struct fs_context *);
 extern void vfs_clean_context(struct fs_context *fc);
 extern int finish_clean_context(struct fs_context *fc);
 
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index 476a7ff..ef42729 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -387,6 +387,24 @@
 	search_path->path_length = ILLEGAL_PATH_ELEMENT_OFFSET;
 }
 
+static int has_valid_deh_location(struct buffer_head *bh, struct item_head *ih)
+{
+	struct reiserfs_de_head *deh;
+	int i;
+
+	deh = B_I_DEH(bh, ih);
+	for (i = 0; i < ih_entry_count(ih); i++) {
+		if (deh_location(&deh[i]) > ih_item_len(ih)) {
+			reiserfs_warning(NULL, "reiserfs-5094",
+					 "directory entry location seems wrong %h",
+					 &deh[i]);
+			return 0;
+		}
+	}
+
+	return 1;
+}
+
 static int is_leaf(char *buf, int blocksize, struct buffer_head *bh)
 {
 	struct block_head *blkh;
@@ -454,11 +472,14 @@
 					 "(second one): %h", ih);
 			return 0;
 		}
-		if (is_direntry_le_ih(ih) && (ih_item_len(ih) < (ih_entry_count(ih) * IH_SIZE))) {
-			reiserfs_warning(NULL, "reiserfs-5093",
-					 "item entry count seems wrong %h",
-					 ih);
-			return 0;
+		if (is_direntry_le_ih(ih)) {
+			if (ih_item_len(ih) < (ih_entry_count(ih) * IH_SIZE)) {
+				reiserfs_warning(NULL, "reiserfs-5093",
+						 "item entry count seems wrong %h",
+						 ih);
+				return 0;
+			}
+			return has_valid_deh_location(bh, ih);
 		}
 		prev_location = ih_location(ih);
 	}
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 3ffafc7..58481f8 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -2082,6 +2082,14 @@
 		unlock_new_inode(root_inode);
 	}
 
+	if (!S_ISDIR(root_inode->i_mode) || !inode_get_bytes(root_inode) ||
+	    !root_inode->i_size) {
+		SWARN(silent, s, "", "corrupt root inode, run fsck");
+		iput(root_inode);
+		errval = -EUCLEAN;
+		goto error;
+	}
+
 	s->s_root = d_make_root(root_inode);
 	if (!s->s_root)
 		goto error;
diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h
index e2bc163..6b54982 100644
--- a/include/linux/fs_context.h
+++ b/include/linux/fs_context.h
@@ -141,6 +141,7 @@
 extern void put_fs_context(struct fs_context *fc);
 extern int vfs_parse_fs_param_source(struct fs_context *fc,
 				     struct fs_parameter *param);
+extern void fc_drop_locked(struct fs_context *fc);
 
 /*
  * sget() wrappers to be called from the ->get_tree() op.
diff --git a/include/uapi/linux/idxd.h b/include/uapi/linux/idxd.h
index e33997b..edc346a 100644
--- a/include/uapi/linux/idxd.h
+++ b/include/uapi/linux/idxd.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */
 /* Copyright(c) 2019 Intel Corporation. All rights rsvd. */
 #ifndef _USR_IDXD_H_
 #define _USR_IDXD_H_
diff --git a/include/uapi/rdma/irdma-abi.h b/include/uapi/rdma/irdma-abi.h
index 26b638a..a7085e0 100644
--- a/include/uapi/rdma/irdma-abi.h
+++ b/include/uapi/rdma/irdma-abi.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
+/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB */
 /*
  * Copyright (c) 2006 - 2021 Intel Corporation.  All rights reserved.
  * Copyright (c) 2005 Topspin Communications.  All rights reserved.
diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c
index 8d6bf56..de2c432 100644
--- a/kernel/cgroup/cgroup-v1.c
+++ b/kernel/cgroup/cgroup-v1.c
@@ -1221,9 +1221,7 @@
 		ret = cgroup_do_get_tree(fc);
 
 	if (!ret && percpu_ref_is_dying(&ctx->root->cgrp.self.refcnt)) {
-		struct super_block *sb = fc->root->d_sb;
-		dput(fc->root);
-		deactivate_locked_super(sb);
+		fc_drop_locked(fc);
 		ret = 1;
 	}
 
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 50142fc..f148eac 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3676,15 +3676,21 @@
 						  unbound_release_work);
 	struct workqueue_struct *wq = pwq->wq;
 	struct worker_pool *pool = pwq->pool;
-	bool is_last;
+	bool is_last = false;
 
-	if (WARN_ON_ONCE(!(wq->flags & WQ_UNBOUND)))
-		return;
+	/*
+	 * when @pwq is not linked, it doesn't hold any reference to the
+	 * @wq, and @wq is invalid to access.
+	 */
+	if (!list_empty(&pwq->pwqs_node)) {
+		if (WARN_ON_ONCE(!(wq->flags & WQ_UNBOUND)))
+			return;
 
-	mutex_lock(&wq->mutex);
-	list_del_rcu(&pwq->pwqs_node);
-	is_last = list_empty(&wq->pwqs);
-	mutex_unlock(&wq->mutex);
+		mutex_lock(&wq->mutex);
+		list_del_rcu(&pwq->pwqs_node);
+		is_last = list_empty(&wq->pwqs);
+		mutex_unlock(&wq->mutex);
+	}
 
 	mutex_lock(&wq_pool_mutex);
 	put_unbound_pool(pool);
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 23c92ad..ba7ced9 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1526,6 +1526,53 @@
 	return err;
 }
 
+static void unix_peek_fds(struct scm_cookie *scm, struct sk_buff *skb)
+{
+	scm->fp = scm_fp_dup(UNIXCB(skb).fp);
+
+	/*
+	 * Garbage collection of unix sockets starts by selecting a set of
+	 * candidate sockets which have reference only from being in flight
+	 * (total_refs == inflight_refs).  This condition is checked once during
+	 * the candidate collection phase, and candidates are marked as such, so
+	 * that non-candidates can later be ignored.  While inflight_refs is
+	 * protected by unix_gc_lock, total_refs (file count) is not, hence this
+	 * is an instantaneous decision.
+	 *
+	 * Once a candidate, however, the socket must not be reinstalled into a
+	 * file descriptor while the garbage collection is in progress.
+	 *
+	 * If the above conditions are met, then the directed graph of
+	 * candidates (*) does not change while unix_gc_lock is held.
+	 *
+	 * Any operations that changes the file count through file descriptors
+	 * (dup, close, sendmsg) does not change the graph since candidates are
+	 * not installed in fds.
+	 *
+	 * Dequeing a candidate via recvmsg would install it into an fd, but
+	 * that takes unix_gc_lock to decrement the inflight count, so it's
+	 * serialized with garbage collection.
+	 *
+	 * MSG_PEEK is special in that it does not change the inflight count,
+	 * yet does install the socket into an fd.  The following lock/unlock
+	 * pair is to ensure serialization with garbage collection.  It must be
+	 * done between incrementing the file count and installing the file into
+	 * an fd.
+	 *
+	 * If garbage collection starts after the barrier provided by the
+	 * lock/unlock, then it will see the elevated refcount and not mark this
+	 * as a candidate.  If a garbage collection is already in progress
+	 * before the file count was incremented, then the lock/unlock pair will
+	 * ensure that garbage collection is finished before progressing to
+	 * installing the fd.
+	 *
+	 * (*) A -> B where B is on the queue of A or B is on the queue of C
+	 * which is on the queue of listening socket A.
+	 */
+	spin_lock(&unix_gc_lock);
+	spin_unlock(&unix_gc_lock);
+}
+
 static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)
 {
 	int err = 0;
@@ -2175,7 +2222,7 @@
 		sk_peek_offset_fwd(sk, size);
 
 		if (UNIXCB(skb).fp)
-			scm.fp = scm_fp_dup(UNIXCB(skb).fp);
+			unix_peek_fds(&scm, skb);
 	}
 	err = (flags & MSG_TRUNC) ? skb->len - skip : size;
 
@@ -2418,7 +2465,7 @@
 			/* It is questionable, see note in unix_dgram_recvmsg.
 			 */
 			if (UNIXCB(skb).fp)
-				scm.fp = scm_fp_dup(UNIXCB(skb).fp);
+				unix_peek_fds(&scm, skb);
 
 			sk_peek_offset_fwd(sk, chunk);
 
diff --git a/tools/testing/selftests/kvm/.gitignore b/tools/testing/selftests/kvm/.gitignore
index 06a351b..0709af0 100644
--- a/tools/testing/selftests/kvm/.gitignore
+++ b/tools/testing/selftests/kvm/.gitignore
@@ -38,6 +38,7 @@
 /x86_64/xen_vmcall_test
 /x86_64/xss_msr_test
 /x86_64/vmx_pmu_msrs_test
+/access_tracking_perf_test
 /demand_paging_test
 /dirty_log_test
 /dirty_log_perf_test
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index b853be2..5832f51 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -71,6 +71,7 @@
 TEST_GEN_PROGS_x86_64 += x86_64/vmx_pmu_msrs_test
 TEST_GEN_PROGS_x86_64 += x86_64/xen_shinfo_test
 TEST_GEN_PROGS_x86_64 += x86_64/xen_vmcall_test
+TEST_GEN_PROGS_x86_64 += access_tracking_perf_test
 TEST_GEN_PROGS_x86_64 += demand_paging_test
 TEST_GEN_PROGS_x86_64 += dirty_log_test
 TEST_GEN_PROGS_x86_64 += dirty_log_perf_test
diff --git a/tools/testing/selftests/kvm/aarch64/get-reg-list.c b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
index a16c8f0..cc89818 100644
--- a/tools/testing/selftests/kvm/aarch64/get-reg-list.c
+++ b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
@@ -1019,7 +1019,8 @@
 #define VREGS_SUBLIST \
 	{ "vregs", .regs = vregs, .regs_n = ARRAY_SIZE(vregs), }
 #define PMU_SUBLIST \
-	{ "pmu", .regs = pmu_regs, .regs_n = ARRAY_SIZE(pmu_regs), }
+	{ "pmu", .capability = KVM_CAP_ARM_PMU_V3, .feature = KVM_ARM_VCPU_PMU_V3, \
+	  .regs = pmu_regs, .regs_n = ARRAY_SIZE(pmu_regs), }
 #define SVE_SUBLIST \
 	{ "sve", .capability = KVM_CAP_ARM_SVE, .feature = KVM_ARM_VCPU_SVE, .finalize = true, \
 	  .regs = sve_regs, .regs_n = ARRAY_SIZE(sve_regs), \
diff --git a/tools/testing/selftests/kvm/access_tracking_perf_test.c b/tools/testing/selftests/kvm/access_tracking_perf_test.c
new file mode 100644
index 0000000..e2baa18
--- /dev/null
+++ b/tools/testing/selftests/kvm/access_tracking_perf_test.c
@@ -0,0 +1,429 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * access_tracking_perf_test
+ *
+ * Copyright (C) 2021, Google, Inc.
+ *
+ * This test measures the performance effects of KVM's access tracking.
+ * Access tracking is driven by the MMU notifiers test_young, clear_young, and
+ * clear_flush_young. These notifiers do not have a direct userspace API,
+ * however the clear_young notifier can be triggered by marking a pages as idle
+ * in /sys/kernel/mm/page_idle/bitmap. This test leverages that mechanism to
+ * enable access tracking on guest memory.
+ *
+ * To measure performance this test runs a VM with a configurable number of
+ * vCPUs that each touch every page in disjoint regions of memory. Performance
+ * is measured in the time it takes all vCPUs to finish touching their
+ * predefined region.
+ *
+ * Note that a deterministic correctness test of access tracking is not possible
+ * by using page_idle as it exists today. This is for a few reasons:
+ *
+ * 1. page_idle only issues clear_young notifiers, which lack a TLB flush. This
+ *    means subsequent guest accesses are not guaranteed to see page table
+ *    updates made by KVM until some time in the future.
+ *
+ * 2. page_idle only operates on LRU pages. Newly allocated pages are not
+ *    immediately allocated to LRU lists. Instead they are held in a "pagevec",
+ *    which is drained to LRU lists some time in the future. There is no
+ *    userspace API to force this drain to occur.
+ *
+ * These limitations are worked around in this test by using a large enough
+ * region of memory for each vCPU such that the number of translations cached in
+ * the TLB and the number of pages held in pagevecs are a small fraction of the
+ * overall workload. And if either of those conditions are not true this test
+ * will fail rather than silently passing.
+ */
+#include <inttypes.h>
+#include <limits.h>
+#include <pthread.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "kvm_util.h"
+#include "test_util.h"
+#include "perf_test_util.h"
+#include "guest_modes.h"
+
+/* Global variable used to synchronize all of the vCPU threads. */
+static int iteration = -1;
+
+/* Defines what vCPU threads should do during a given iteration. */
+static enum {
+	/* Run the vCPU to access all its memory. */
+	ITERATION_ACCESS_MEMORY,
+	/* Mark the vCPU's memory idle in page_idle. */
+	ITERATION_MARK_IDLE,
+} iteration_work;
+
+/* Set to true when vCPU threads should exit. */
+static bool done;
+
+/* The iteration that was last completed by each vCPU. */
+static int vcpu_last_completed_iteration[KVM_MAX_VCPUS];
+
+/* Whether to overlap the regions of memory vCPUs access. */
+static bool overlap_memory_access;
+
+struct test_params {
+	/* The backing source for the region of memory. */
+	enum vm_mem_backing_src_type backing_src;
+
+	/* The amount of memory to allocate for each vCPU. */
+	uint64_t vcpu_memory_bytes;
+
+	/* The number of vCPUs to create in the VM. */
+	int vcpus;
+};
+
+static uint64_t pread_uint64(int fd, const char *filename, uint64_t index)
+{
+	uint64_t value;
+	off_t offset = index * sizeof(value);
+
+	TEST_ASSERT(pread(fd, &value, sizeof(value), offset) == sizeof(value),
+		    "pread from %s offset 0x%" PRIx64 " failed!",
+		    filename, offset);
+
+	return value;
+
+}
+
+#define PAGEMAP_PRESENT (1ULL << 63)
+#define PAGEMAP_PFN_MASK ((1ULL << 55) - 1)
+
+static uint64_t lookup_pfn(int pagemap_fd, struct kvm_vm *vm, uint64_t gva)
+{
+	uint64_t hva = (uint64_t) addr_gva2hva(vm, gva);
+	uint64_t entry;
+	uint64_t pfn;
+
+	entry = pread_uint64(pagemap_fd, "pagemap", hva / getpagesize());
+	if (!(entry & PAGEMAP_PRESENT))
+		return 0;
+
+	pfn = entry & PAGEMAP_PFN_MASK;
+	if (!pfn) {
+		print_skip("Looking up PFNs requires CAP_SYS_ADMIN");
+		exit(KSFT_SKIP);
+	}
+
+	return pfn;
+}
+
+static bool is_page_idle(int page_idle_fd, uint64_t pfn)
+{
+	uint64_t bits = pread_uint64(page_idle_fd, "page_idle", pfn / 64);
+
+	return !!((bits >> (pfn % 64)) & 1);
+}
+
+static void mark_page_idle(int page_idle_fd, uint64_t pfn)
+{
+	uint64_t bits = 1ULL << (pfn % 64);
+
+	TEST_ASSERT(pwrite(page_idle_fd, &bits, 8, 8 * (pfn / 64)) == 8,
+		    "Set page_idle bits for PFN 0x%" PRIx64, pfn);
+}
+
+static void mark_vcpu_memory_idle(struct kvm_vm *vm, int vcpu_id)
+{
+	uint64_t base_gva = perf_test_args.vcpu_args[vcpu_id].gva;
+	uint64_t pages = perf_test_args.vcpu_args[vcpu_id].pages;
+	uint64_t page;
+	uint64_t still_idle = 0;
+	uint64_t no_pfn = 0;
+	int page_idle_fd;
+	int pagemap_fd;
+
+	/* If vCPUs are using an overlapping region, let vCPU 0 mark it idle. */
+	if (overlap_memory_access && vcpu_id)
+		return;
+
+	page_idle_fd = open("/sys/kernel/mm/page_idle/bitmap", O_RDWR);
+	TEST_ASSERT(page_idle_fd > 0, "Failed to open page_idle.");
+
+	pagemap_fd = open("/proc/self/pagemap", O_RDONLY);
+	TEST_ASSERT(pagemap_fd > 0, "Failed to open pagemap.");
+
+	for (page = 0; page < pages; page++) {
+		uint64_t gva = base_gva + page * perf_test_args.guest_page_size;
+		uint64_t pfn = lookup_pfn(pagemap_fd, vm, gva);
+
+		if (!pfn) {
+			no_pfn++;
+			continue;
+		}
+
+		if (is_page_idle(page_idle_fd, pfn)) {
+			still_idle++;
+			continue;
+		}
+
+		mark_page_idle(page_idle_fd, pfn);
+	}
+
+	/*
+	 * Assumption: Less than 1% of pages are going to be swapped out from
+	 * under us during this test.
+	 */
+	TEST_ASSERT(no_pfn < pages / 100,
+		    "vCPU %d: No PFN for %" PRIu64 " out of %" PRIu64 " pages.",
+		    vcpu_id, no_pfn, pages);
+
+	/*
+	 * Test that at least 90% of memory has been marked idle (the rest might
+	 * not be marked idle because the pages have not yet made it to an LRU
+	 * list or the translations are still cached in the TLB). 90% is
+	 * arbitrary; high enough that we ensure most memory access went through
+	 * access tracking but low enough as to not make the test too brittle
+	 * over time and across architectures.
+	 */
+	TEST_ASSERT(still_idle < pages / 10,
+		    "vCPU%d: Too many pages still idle (%"PRIu64 " out of %"
+		    PRIu64 ").\n",
+		    vcpu_id, still_idle, pages);
+
+	close(page_idle_fd);
+	close(pagemap_fd);
+}
+
+static void assert_ucall(struct kvm_vm *vm, uint32_t vcpu_id,
+			 uint64_t expected_ucall)
+{
+	struct ucall uc;
+	uint64_t actual_ucall = get_ucall(vm, vcpu_id, &uc);
+
+	TEST_ASSERT(expected_ucall == actual_ucall,
+		    "Guest exited unexpectedly (expected ucall %" PRIu64
+		    ", got %" PRIu64 ")",
+		    expected_ucall, actual_ucall);
+}
+
+static bool spin_wait_for_next_iteration(int *current_iteration)
+{
+	int last_iteration = *current_iteration;
+
+	do {
+		if (READ_ONCE(done))
+			return false;
+
+		*current_iteration = READ_ONCE(iteration);
+	} while (last_iteration == *current_iteration);
+
+	return true;
+}
+
+static void *vcpu_thread_main(void *arg)
+{
+	struct perf_test_vcpu_args *vcpu_args = arg;
+	struct kvm_vm *vm = perf_test_args.vm;
+	int vcpu_id = vcpu_args->vcpu_id;
+	int current_iteration = -1;
+
+	vcpu_args_set(vm, vcpu_id, 1, vcpu_id);
+
+	while (spin_wait_for_next_iteration(&current_iteration)) {
+		switch (READ_ONCE(iteration_work)) {
+		case ITERATION_ACCESS_MEMORY:
+			vcpu_run(vm, vcpu_id);
+			assert_ucall(vm, vcpu_id, UCALL_SYNC);
+			break;
+		case ITERATION_MARK_IDLE:
+			mark_vcpu_memory_idle(vm, vcpu_id);
+			break;
+		};
+
+		vcpu_last_completed_iteration[vcpu_id] = current_iteration;
+	}
+
+	return NULL;
+}
+
+static void spin_wait_for_vcpu(int vcpu_id, int target_iteration)
+{
+	while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id]) !=
+	       target_iteration) {
+		continue;
+	}
+}
+
+/* The type of memory accesses to perform in the VM. */
+enum access_type {
+	ACCESS_READ,
+	ACCESS_WRITE,
+};
+
+static void run_iteration(struct kvm_vm *vm, int vcpus, const char *description)
+{
+	struct timespec ts_start;
+	struct timespec ts_elapsed;
+	int next_iteration;
+	int vcpu_id;
+
+	/* Kick off the vCPUs by incrementing iteration. */
+	next_iteration = ++iteration;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts_start);
+
+	/* Wait for all vCPUs to finish the iteration. */
+	for (vcpu_id = 0; vcpu_id < vcpus; vcpu_id++)
+		spin_wait_for_vcpu(vcpu_id, next_iteration);
+
+	ts_elapsed = timespec_elapsed(ts_start);
+	pr_info("%-30s: %ld.%09lds\n",
+		description, ts_elapsed.tv_sec, ts_elapsed.tv_nsec);
+}
+
+static void access_memory(struct kvm_vm *vm, int vcpus, enum access_type access,
+			  const char *description)
+{
+	perf_test_args.wr_fract = (access == ACCESS_READ) ? INT_MAX : 1;
+	sync_global_to_guest(vm, perf_test_args);
+	iteration_work = ITERATION_ACCESS_MEMORY;
+	run_iteration(vm, vcpus, description);
+}
+
+static void mark_memory_idle(struct kvm_vm *vm, int vcpus)
+{
+	/*
+	 * Even though this parallelizes the work across vCPUs, this is still a
+	 * very slow operation because page_idle forces the test to mark one pfn
+	 * at a time and the clear_young notifier serializes on the KVM MMU
+	 * lock.
+	 */
+	pr_debug("Marking VM memory idle (slow)...\n");
+	iteration_work = ITERATION_MARK_IDLE;
+	run_iteration(vm, vcpus, "Mark memory idle");
+}
+
+static pthread_t *create_vcpu_threads(int vcpus)
+{
+	pthread_t *vcpu_threads;
+	int i;
+
+	vcpu_threads = malloc(vcpus * sizeof(vcpu_threads[0]));
+	TEST_ASSERT(vcpu_threads, "Failed to allocate vcpu_threads.");
+
+	for (i = 0; i < vcpus; i++) {
+		vcpu_last_completed_iteration[i] = iteration;
+		pthread_create(&vcpu_threads[i], NULL, vcpu_thread_main,
+			       &perf_test_args.vcpu_args[i]);
+	}
+
+	return vcpu_threads;
+}
+
+static void terminate_vcpu_threads(pthread_t *vcpu_threads, int vcpus)
+{
+	int i;
+
+	/* Set done to signal the vCPU threads to exit */
+	done = true;
+
+	for (i = 0; i < vcpus; i++)
+		pthread_join(vcpu_threads[i], NULL);
+}
+
+static void run_test(enum vm_guest_mode mode, void *arg)
+{
+	struct test_params *params = arg;
+	struct kvm_vm *vm;
+	pthread_t *vcpu_threads;
+	int vcpus = params->vcpus;
+
+	vm = perf_test_create_vm(mode, vcpus, params->vcpu_memory_bytes,
+				 params->backing_src);
+
+	perf_test_setup_vcpus(vm, vcpus, params->vcpu_memory_bytes,
+			      !overlap_memory_access);
+
+	vcpu_threads = create_vcpu_threads(vcpus);
+
+	pr_info("\n");
+	access_memory(vm, vcpus, ACCESS_WRITE, "Populating memory");
+
+	/* As a control, read and write to the populated memory first. */
+	access_memory(vm, vcpus, ACCESS_WRITE, "Writing to populated memory");
+	access_memory(vm, vcpus, ACCESS_READ, "Reading from populated memory");
+
+	/* Repeat on memory that has been marked as idle. */
+	mark_memory_idle(vm, vcpus);
+	access_memory(vm, vcpus, ACCESS_WRITE, "Writing to idle memory");
+	mark_memory_idle(vm, vcpus);
+	access_memory(vm, vcpus, ACCESS_READ, "Reading from idle memory");
+
+	terminate_vcpu_threads(vcpu_threads, vcpus);
+	free(vcpu_threads);
+	perf_test_destroy_vm(vm);
+}
+
+static void help(char *name)
+{
+	puts("");
+	printf("usage: %s [-h] [-m mode] [-b vcpu_bytes] [-v vcpus] [-o]  [-s mem_type]\n",
+	       name);
+	puts("");
+	printf(" -h: Display this help message.");
+	guest_modes_help();
+	printf(" -b: specify the size of the memory region which should be\n"
+	       "     dirtied by each vCPU. e.g. 10M or 3G.\n"
+	       "     (default: 1G)\n");
+	printf(" -v: specify the number of vCPUs to run.\n");
+	printf(" -o: Overlap guest memory accesses instead of partitioning\n"
+	       "     them into a separate region of memory for each vCPU.\n");
+	printf(" -s: specify the type of memory that should be used to\n"
+	       "     back the guest data region.\n\n");
+	backing_src_help();
+	puts("");
+	exit(0);
+}
+
+int main(int argc, char *argv[])
+{
+	struct test_params params = {
+		.backing_src = VM_MEM_SRC_ANONYMOUS,
+		.vcpu_memory_bytes = DEFAULT_PER_VCPU_MEM_SIZE,
+		.vcpus = 1,
+	};
+	int page_idle_fd;
+	int opt;
+
+	guest_modes_append_default();
+
+	while ((opt = getopt(argc, argv, "hm:b:v:os:")) != -1) {
+		switch (opt) {
+		case 'm':
+			guest_modes_cmdline(optarg);
+			break;
+		case 'b':
+			params.vcpu_memory_bytes = parse_size(optarg);
+			break;
+		case 'v':
+			params.vcpus = atoi(optarg);
+			break;
+		case 'o':
+			overlap_memory_access = true;
+			break;
+		case 's':
+			params.backing_src = parse_backing_src_type(optarg);
+			break;
+		case 'h':
+		default:
+			help(argv[0]);
+			break;
+		}
+	}
+
+	page_idle_fd = open("/sys/kernel/mm/page_idle/bitmap", O_RDWR);
+	if (page_idle_fd < 0) {
+		print_skip("CONFIG_IDLE_PAGE_TRACKING is not enabled");
+		exit(KSFT_SKIP);
+	}
+	close(page_idle_fd);
+
+	for_each_guest_mode(run_test, &params);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c
index 04a2641..80cbd3a 100644
--- a/tools/testing/selftests/kvm/dirty_log_perf_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c
@@ -312,6 +312,7 @@
 			break;
 		case 'o':
 			p.partition_vcpu_memory_access = false;
+			break;
 		case 's':
 			p.backing_src = parse_backing_src_type(optarg);
 			break;
diff --git a/tools/testing/selftests/kvm/steal_time.c b/tools/testing/selftests/kvm/steal_time.c
index b0031f2d..ecec308 100644
--- a/tools/testing/selftests/kvm/steal_time.c
+++ b/tools/testing/selftests/kvm/steal_time.c
@@ -320,7 +320,7 @@
 		run_delay = get_run_delay();
 		pthread_create(&thread, &attr, do_steal_time, NULL);
 		do
-			pthread_yield();
+			sched_yield();
 		while (get_run_delay() - run_delay < MIN_RUN_DELAY_NS);
 		pthread_join(thread, NULL);
 		run_delay = get_run_delay() - run_delay;
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 9869598..d20fba0 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3110,6 +3110,7 @@
 					++vcpu->stat.generic.halt_poll_invalid;
 				goto out;
 			}
+			cpu_relax();
 			poll_end = cur = ktime_get();
 		} while (kvm_vcpu_can_poll(cur, stop));
 	}
@@ -4390,6 +4391,16 @@
 	};
 };
 
+struct compat_kvm_clear_dirty_log {
+	__u32 slot;
+	__u32 num_pages;
+	__u64 first_page;
+	union {
+		compat_uptr_t dirty_bitmap; /* one bit per page */
+		__u64 padding2;
+	};
+};
+
 static long kvm_vm_compat_ioctl(struct file *filp,
 			   unsigned int ioctl, unsigned long arg)
 {
@@ -4399,6 +4410,24 @@
 	if (kvm->mm != current->mm)
 		return -EIO;
 	switch (ioctl) {
+#ifdef CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT
+	case KVM_CLEAR_DIRTY_LOG: {
+		struct compat_kvm_clear_dirty_log compat_log;
+		struct kvm_clear_dirty_log log;
+
+		if (copy_from_user(&compat_log, (void __user *)arg,
+				   sizeof(compat_log)))
+			return -EFAULT;
+		log.slot	 = compat_log.slot;
+		log.num_pages	 = compat_log.num_pages;
+		log.first_page	 = compat_log.first_page;
+		log.padding2	 = compat_log.padding2;
+		log.dirty_bitmap = compat_ptr(compat_log.dirty_bitmap);
+
+		r = kvm_vm_ioctl_clear_dirty_log(kvm, &log);
+		break;
+	}
+#endif
 	case KVM_GET_DIRTY_LOG: {
 		struct compat_kvm_dirty_log compat_log;
 		struct kvm_dirty_log log;