23 files changed, 27 insertions, 70 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 4f2eeda907ec..f27e6b90428e 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -18,6 +18,7 @@ config ARC
 	select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
 	select ARCH_32BIT_OFF_T
 	select BUILDTIME_TABLE_SORT
+	select GENERIC_BUILTIN_DTB
 	select CLONE_BACKWARDS
 	select COMMON_CLK
 	select DMA_DIRECT_REMAP
@@ -25,7 +26,6 @@ config ARC
 	# for now, we don't need GENERIC_IRQ_PROBE, CONFIG_GENERIC_IRQ_CHIP
 	select GENERIC_IRQ_SHOW
 	select GENERIC_PCI_IOMAP
-	select GENERIC_PENDING_IRQ if SMP
 	select GENERIC_SCHED_CLOCK
 	select GENERIC_SMP_IDLE_THREAD
 	select GENERIC_IOREMAP
@@ -551,11 +551,11 @@ config ARC_DBG_JUMP_LABEL
 	  part of static keys (jump labels) related code.
 endif
 
-config ARC_BUILTIN_DTB_NAME
+config BUILTIN_DTB_NAME
 	string "Built in DTB"
+	default "nsim_700"
 	help
-	  Set the name of the DTB to embed in the vmlinux binary
-	  Leaving it blank selects the "nsim_700" dtb.
+	  Set the name of the DTB to embed in the vmlinux binary.
 
 endmenu	 # "ARC Architecture Configuration"
 
diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index fb98478ed1ab..0c5e6e6314f2 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -82,9 +82,6 @@ KBUILD_CFLAGS	+= $(cflags-y)
 KBUILD_AFLAGS	+= $(KBUILD_CFLAGS)
 KBUILD_LDFLAGS	+= $(ldflags-y)
 
-# w/o this dtb won't embed into kernel binary
-core-y		+= arch/arc/boot/dts/
-
 core-y				+= arch/arc/plat-sim/
 core-$(CONFIG_ARC_PLAT_TB10X)	+= arch/arc/plat-tb10x/
 core-$(CONFIG_ARC_PLAT_AXS10X)	+= arch/arc/plat-axs10x/
diff --git a/arch/arc/boot/dts/Makefile b/arch/arc/boot/dts/Makefile
index 48704dfdf75c..ee5664f0640d 100644
--- a/arch/arc/boot/dts/Makefile
+++ b/arch/arc/boot/dts/Makefile
@@ -1,13 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
-# Built-in dtb
-builtindtb-y		:= nsim_700
 
-ifneq ($(CONFIG_ARC_BUILTIN_DTB_NAME),)
-	builtindtb-y	:= $(CONFIG_ARC_BUILTIN_DTB_NAME)
-endif
-
-obj-y   += $(builtindtb-y).dtb.o
-dtb-y := $(builtindtb-y).dtb
+dtb-y	:= $(addsuffix .dtb, $(CONFIG_BUILTIN_DTB_NAME))
 
 # for CONFIG_OF_ALL_DTBS test
 dtb-	:= $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))
diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig
index 319bbe270322..a7cd526dd7ca 100644
--- a/arch/arc/configs/axs101_defconfig
+++ b/arch/arc/configs/axs101_defconfig
@@ -23,7 +23,7 @@ CONFIG_PARTITION_ADVANCED=y
 CONFIG_ARC_PLAT_AXS10X=y
 CONFIG_AXS101=y
 CONFIG_ARC_CACHE_LINE_SHIFT=5
-CONFIG_ARC_BUILTIN_DTB_NAME="axs101"
+CONFIG_BUILTIN_DTB_NAME="axs101"
 CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
diff --git a/arch/arc/configs/axs103_defconfig b/arch/arc/configs/axs103_defconfig
index 8c1f1a111a17..afa6a348f444 100644
--- a/arch/arc/configs/axs103_defconfig
+++ b/arch/arc/configs/axs103_defconfig
@@ -22,7 +22,7 @@ CONFIG_PARTITION_ADVANCED=y
 CONFIG_ARC_PLAT_AXS10X=y
 CONFIG_AXS103=y
 CONFIG_ISA_ARCV2=y
-CONFIG_ARC_BUILTIN_DTB_NAME="axs103"
+CONFIG_BUILTIN_DTB_NAME="axs103"
 CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig
index 75cab9f25b5b..2bfa6371953c 100644
--- a/arch/arc/configs/axs103_smp_defconfig
+++ b/arch/arc/configs/axs103_smp_defconfig
@@ -22,7 +22,7 @@ CONFIG_ARC_PLAT_AXS10X=y
 CONFIG_AXS103=y
 CONFIG_ISA_ARCV2=y
 CONFIG_SMP=y
-CONFIG_ARC_BUILTIN_DTB_NAME="axs103_idu"
+CONFIG_BUILTIN_DTB_NAME="axs103_idu"
 CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
diff --git a/arch/arc/configs/haps_hs_defconfig b/arch/arc/configs/haps_hs_defconfig
index 8c3ed5d6e6c3..3a1577112078 100644
--- a/arch/arc/configs/haps_hs_defconfig
+++ b/arch/arc/configs/haps_hs_defconfig
@@ -14,7 +14,7 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 CONFIG_PERF_EVENTS=y
 # CONFIG_COMPAT_BRK is not set
-CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs"
+CONFIG_BUILTIN_DTB_NAME="haps_hs"
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_COMPACTION is not set
diff --git a/arch/arc/configs/haps_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig
index 6fc98c1b9b36..a3cf940b1f5b 100644
--- a/arch/arc/configs/haps_hs_smp_defconfig
+++ b/arch/arc/configs/haps_hs_smp_defconfig
@@ -16,7 +16,7 @@ CONFIG_PERF_EVENTS=y
 # CONFIG_VM_EVENT_COUNTERS is not set
 # CONFIG_COMPAT_BRK is not set
 CONFIG_SMP=y
-CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs_idu"
+CONFIG_BUILTIN_DTB_NAME="haps_hs_idu"
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set
diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig
index 9e79154b5535..1558e8e87767 100644
--- a/arch/arc/configs/hsdk_defconfig
+++ b/arch/arc/configs/hsdk_defconfig
@@ -20,7 +20,7 @@ CONFIG_ISA_ARCV2=y
 CONFIG_SMP=y
 CONFIG_LINUX_LINK_BASE=0x90000000
 CONFIG_LINUX_RAM_BASE=0x80000000
-CONFIG_ARC_BUILTIN_DTB_NAME="hsdk"
+CONFIG_BUILTIN_DTB_NAME="hsdk"
 CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
index 51092c39e360..f8b3235d9a65 100644
--- a/arch/arc/configs/nsim_700_defconfig
+++ b/arch/arc/configs/nsim_700_defconfig
@@ -17,7 +17,7 @@ CONFIG_PERF_EVENTS=y
 # CONFIG_SLUB_DEBUG is not set
 # CONFIG_COMPAT_BRK is not set
 CONFIG_ISA_ARCOMPACT=y
-CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700"
+CONFIG_BUILTIN_DTB_NAME="nsim_700"
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set
diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig
index 70c17bca4939..ee45dc0877fb 100644
--- a/arch/arc/configs/nsimosci_defconfig
+++ b/arch/arc/configs/nsimosci_defconfig
@@ -19,7 +19,7 @@ CONFIG_ISA_ARCOMPACT=y
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set
-CONFIG_ARC_BUILTIN_DTB_NAME="nsimosci"
+CONFIG_BUILTIN_DTB_NAME="nsimosci"
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig
index 59a3b6642fe7..e0a309970c20 100644
--- a/arch/arc/configs/nsimosci_hs_defconfig
+++ b/arch/arc/configs/nsimosci_hs_defconfig
@@ -19,7 +19,7 @@ CONFIG_KPROBES=y
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set
 CONFIG_ISA_ARCV2=y
-CONFIG_ARC_BUILTIN_DTB_NAME="nsimosci_hs"
+CONFIG_BUILTIN_DTB_NAME="nsimosci_hs"
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig
index 1419fc946a08..88325b8b49cf 100644
--- a/arch/arc/configs/nsimosci_hs_smp_defconfig
+++ b/arch/arc/configs/nsimosci_hs_smp_defconfig
@@ -16,7 +16,7 @@ CONFIG_MODULES=y
 CONFIG_ISA_ARCV2=y
 CONFIG_SMP=y
 # CONFIG_ARC_TIMERS_64BIT is not set
-CONFIG_ARC_BUILTIN_DTB_NAME="nsimosci_hs_idu"
+CONFIG_BUILTIN_DTB_NAME="nsimosci_hs_idu"
 CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig
index 5aba3d850fa2..865fbc19ef03 100644
--- a/arch/arc/configs/tb10x_defconfig
+++ b/arch/arc/configs/tb10x_defconfig
@@ -26,7 +26,7 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_ARC_PLAT_TB10X=y
 CONFIG_ARC_CACHE_LINE_SHIFT=5
 CONFIG_HZ=250
-CONFIG_ARC_BUILTIN_DTB_NAME="abilis_tb100_dvk"
+CONFIG_BUILTIN_DTB_NAME="abilis_tb100_dvk"
 CONFIG_PREEMPT_VOLUNTARY=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
diff --git a/arch/arc/configs/vdk_hs38_defconfig b/arch/arc/configs/vdk_hs38_defconfig
index 50c343913825..03d9ac20baa9 100644
--- a/arch/arc/configs/vdk_hs38_defconfig
+++ b/arch/arc/configs/vdk_hs38_defconfig
@@ -13,7 +13,7 @@ CONFIG_PARTITION_ADVANCED=y
 CONFIG_ARC_PLAT_AXS10X=y
 CONFIG_AXS103=y
 CONFIG_ISA_ARCV2=y
-CONFIG_ARC_BUILTIN_DTB_NAME="vdk_hs38"
+CONFIG_BUILTIN_DTB_NAME="vdk_hs38"
 CONFIG_PREEMPT=y
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig
index 6d9e1d9f71d2..c09488992f13 100644
--- a/arch/arc/configs/vdk_hs38_smp_defconfig
+++ b/arch/arc/configs/vdk_hs38_smp_defconfig
@@ -15,7 +15,7 @@ CONFIG_AXS103=y
 CONFIG_ISA_ARCV2=y
 CONFIG_SMP=y
 # CONFIG_ARC_TIMERS_64BIT is not set
-CONFIG_ARC_BUILTIN_DTB_NAME="vdk_hs38_smp"
+CONFIG_BUILTIN_DTB_NAME="vdk_hs38_smp"
 CONFIG_PREEMPT=y
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/arc/include/asm/pgalloc.h b/arch/arc/include/asm/pgalloc.h
index 096b8ef58edb..dfae070fe8d5 100644
--- a/arch/arc/include/asm/pgalloc.h
+++ b/arch/arc/include/asm/pgalloc.h
@@ -53,19 +53,14 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte_
 
 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
-	pgd_t *ret = (pgd_t *) __get_free_page(GFP_KERNEL);
+	pgd_t *ret = __pgd_alloc(mm, 0);
 
 	if (ret) {
 		int num, num2;
-		num = USER_PTRS_PER_PGD + USER_KERNEL_GUTTER / PGDIR_SIZE;
-		memzero(ret, num * sizeof(pgd_t));
 
+		num = USER_PTRS_PER_PGD + USER_KERNEL_GUTTER / PGDIR_SIZE;
 		num2 = VMALLOC_SIZE / PGDIR_SIZE;
 		memcpy(ret + num, swapper_pg_dir + num, num2 * sizeof(pgd_t));
-
-		memzero(ret + num + num2,
-			       (PTRS_PER_PGD - num - num2) * sizeof(pgd_t));
-
 	}
 	return ret;
 }
diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
index f324f0e3341a..fea29d9d18d6 100644
--- a/arch/arc/kernel/intc-arcv2.c
+++ b/arch/arc/kernel/intc-arcv2.c
@@ -178,7 +178,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
 	 * Needed for primary domain lookup to succeed
 	 * This is a primary irqchip, and can never have a parent
 	 */
-	irq_set_default_host(root_domain);
+	irq_set_default_domain(root_domain);
 
 #ifdef CONFIG_SMP
 	irq_create_mapping(root_domain, IPI_IRQ);
diff --git a/arch/arc/kernel/intc-compact.c b/arch/arc/kernel/intc-compact.c
index 6885e422870e..1d2ff1c6a61b 100644
--- a/arch/arc/kernel/intc-compact.c
+++ b/arch/arc/kernel/intc-compact.c
@@ -121,7 +121,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
 	 * Needed for primary domain lookup to succeed
 	 * This is a primary irqchip, and can never have a parent
 	 */
-	irq_set_default_host(root_domain);
+	irq_set_default_domain(root_domain);
 
 	return 0;
 }
diff --git a/arch/arc/kernel/mcip.c b/arch/arc/kernel/mcip.c
index 55373ca0d28b..cdd370ec9280 100644
--- a/arch/arc/kernel/mcip.c
+++ b/arch/arc/kernel/mcip.c
@@ -357,8 +357,6 @@ static void idu_cascade_isr(struct irq_desc *desc)
 static int idu_irq_map(struct irq_domain *d, unsigned int virq, irq_hw_number_t hwirq)
 {
 	irq_set_chip_and_handler(virq, &idu_irq_chip, handle_level_irq);
-	irq_set_status_flags(virq, IRQ_MOVE_PCNTXT);
-
 	return 0;
 }
 
diff --git a/arch/arc/kernel/unaligned.c b/arch/arc/kernel/unaligned.c
index d2f5ceaaed1b..3b2d8b1bd271 100644
--- a/arch/arc/kernel/unaligned.c
+++ b/arch/arc/kernel/unaligned.c
@@ -200,7 +200,6 @@ int misaligned_fixup(unsigned long address, struct pt_regs *regs,
 		     struct callee_regs *cregs)
 {
 	struct disasm_state state;
-	char buf[TASK_COMM_LEN];
 
 	/* handle user mode only and only if enabled by sysadmin */
 	if (!user_mode(regs) || !unaligned_enabled)
@@ -212,11 +211,11 @@ int misaligned_fixup(unsigned long address, struct pt_regs *regs,
 			     " performance significantly\n. To enable further"
 			     " logging of such instances, please \n"
 			     " echo 0 > /proc/sys/kernel/ignore-unaligned-usertrap\n",
-			     get_task_comm(buf, current), task_pid_nr(current));
+			     current->comm, task_pid_nr(current));
 	} else {
 		/* Add rate limiting if it gets down to it */
 		pr_warn("%s(%d): unaligned access to/from 0x%lx by PC: 0x%lx\n",
-			get_task_comm(buf, current), task_pid_nr(current),
+			current->comm, task_pid_nr(current),
 			address, regs->ret);
 
 	}
diff --git a/arch/arc/mm/init.c b/arch/arc/mm/init.c
index 6a71b23f1383..a73cc94f806e 100644
--- a/arch/arc/mm/init.c
+++ b/arch/arc/mm/init.c
@@ -150,41 +150,18 @@ void __init setup_arch_memory(void)
 	 */
 	max_zone_pfn[ZONE_HIGHMEM] = max_high_pfn;
 
-	high_memory = (void *)(min_high_pfn << PAGE_SHIFT);
-
 	arch_pfn_offset = min(min_low_pfn, min_high_pfn);
 	kmap_init();
-
-#else /* CONFIG_HIGHMEM */
-	/* pfn_valid() uses this when FLATMEM=y and HIGHMEM=n */
-	max_mapnr = max_low_pfn - min_low_pfn;
-
 #endif /* CONFIG_HIGHMEM */
 
 	free_area_init(max_zone_pfn);
 }
 
-static void __init highmem_init(void)
+void __init arch_mm_preinit(void)
 {
 #ifdef CONFIG_HIGHMEM
-	unsigned long tmp;
-
 	memblock_phys_free(high_mem_start, high_mem_sz);
-	for (tmp = min_high_pfn; tmp < max_high_pfn; tmp++)
-		free_highmem_page(pfn_to_page(tmp));
 #endif
-}
-
-/*
- * mem_init - initializes memory
- *
- * Frees up bootmem
- * Calculates and displays memory available/used
- */
-void __init mem_init(void)
-{
-	memblock_free_all();
-	highmem_init();
 
 	BUILD_BUG_ON((PTRS_PER_PGD * sizeof(pgd_t)) > PAGE_SIZE);
 	BUILD_BUG_ON((PTRS_PER_PUD * sizeof(pud_t)) > PAGE_SIZE);
diff --git a/arch/arc/mm/ioremap.c b/arch/arc/mm/ioremap.c
index b07004d53267..fd8897a0e52c 100644
--- a/arch/arc/mm/ioremap.c
+++ b/arch/arc/mm/ioremap.c
@@ -32,7 +32,7 @@ void __iomem *ioremap(phys_addr_t paddr, unsigned long size)
 		return (void __iomem *)(u32)paddr;
 
 	return ioremap_prot(paddr, size,
-			    pgprot_val(pgprot_noncached(PAGE_KERNEL)));
+			    pgprot_noncached(PAGE_KERNEL));
 }
 EXPORT_SYMBOL(ioremap);
 
@@ -44,10 +44,8 @@ EXPORT_SYMBOL(ioremap);
  * might need finer access control (R/W/X)
  */
 void __iomem *ioremap_prot(phys_addr_t paddr, size_t size,
-			   unsigned long flags)
+			   pgprot_t prot)
 {
-	pgprot_t prot = __pgprot(flags);
-
 	/* force uncached */
 	return generic_ioremap_prot(paddr, size, pgprot_noncached(prot));
 }