diff options
Diffstat (limited to 'arch/arm/mm')
55 files changed, 135 insertions, 307 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index b169e580bf82..820b60a50125 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -709,7 +709,7 @@ config ARM_VIRT_EXT assistance. A compliant bootloader is required in order to make maximum - use of this feature. Refer to Documentation/arm/Booting for + use of this feature. Refer to Documentation/arm/booting.rst for details. config SWP_EMULATE @@ -780,6 +780,14 @@ config CPU_ICACHE_DISABLE Say Y here to disable the processor instruction cache. Unless you have a reason not to or are unsure, say N. +config CPU_ICACHE_MISMATCH_WORKAROUND + bool "Workaround for I-Cache line size mismatch between CPU cores" + depends on SMP && CPU_V7 + help + Some big.LITTLE systems have I-Cache line size mismatch between + LITTLE and big cores. Say Y here to enable a workaround for + proper I-Cache support on such systems. If unsure, say N. + config CPU_DCACHE_DISABLE bool "Disable D-Cache (C-bit)" depends on (CPU_CP15 && !SMP) || CPU_V7M @@ -867,7 +875,7 @@ config KUSER_HELPERS the CPU type fitted to the system. This permits binaries to be run on ARMv4 through to ARMv7 without modification. - See Documentation/arm/kernel_user_helpers.txt for details. + See Documentation/arm/kernel_user_helpers.rst for details. However, the fixed address nature of these helpers can be used by ROP (return orientated programming) authors when creating diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c index e376883ab35b..8cdb78642e93 100644 --- a/arch/arm/mm/alignment.c +++ b/arch/arm/mm/alignment.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/alignment.c * @@ -6,10 +7,6 @@ * Thumb alignment fault fixups (c) 2004 MontaVista Software, Inc. * - Adapted from gdb/sim/arm/thumbemu.c -- Thumb instruction emulation. * Copyright (C) 1996, Cygnus Software Technologies Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/moduleparam.h> #include <linux/compiler.h> @@ -948,7 +945,7 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs) goto fixup; if (ai_usermode & UM_SIGNAL) { - force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)addr, current); + force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)addr); } else { /* * We're about to disable the alignment trap and return to diff --git a/arch/arm/mm/cache-b15-rac.c b/arch/arm/mm/cache-b15-rac.c index c6ed14840c3c..3471fc64a3ae 100644 --- a/arch/arm/mm/cache-b15-rac.c +++ b/arch/arm/mm/cache-b15-rac.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Broadcom Brahma-B15 CPU read-ahead cache management functions * * Copyright (C) 2015-2016 Broadcom - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/err.h> diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S index 2f0c58836ae7..3a464d1649b4 100644 --- a/arch/arm/mm/cache-fa.S +++ b/arch/arm/mm/cache-fa.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/cache-fa.S * @@ -7,10 +8,6 @@ * Based on cache-v4wb.S: * Copyright (C) 1997-2002 Russell king * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Processors: FA520 FA526 FA626 */ #include <linux/linkage.h> diff --git a/arch/arm/mm/cache-nop.S b/arch/arm/mm/cache-nop.S index f1cc9861031f..72d939ef8798 100644 --- a/arch/arm/mm/cache-nop.S +++ b/arch/arm/mm/cache-nop.S @@ -1,8 +1,4 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ +/* SPDX-License-Identifier: GPL-2.0-only */ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> diff --git a/arch/arm/mm/cache-v4.S b/arch/arm/mm/cache-v4.S index 91e3adf155cb..7787057e4990 100644 --- a/arch/arm/mm/cache-v4.S +++ b/arch/arm/mm/cache-v4.S @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/cache-v4.S * * Copyright (C) 1997-2002 Russell king - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/linkage.h> #include <linux/init.h> diff --git a/arch/arm/mm/cache-v4wb.S b/arch/arm/mm/cache-v4wb.S index a5084ec70c6e..905ac2fa2b1e 100644 --- a/arch/arm/mm/cache-v4wb.S +++ b/arch/arm/mm/cache-v4wb.S @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/cache-v4wb.S * * Copyright (C) 1997-2002 Russell king - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/linkage.h> #include <linux/init.h> diff --git a/arch/arm/mm/cache-v4wt.S b/arch/arm/mm/cache-v4wt.S index a0982ce49007..0b290c25a99d 100644 --- a/arch/arm/mm/cache-v4wt.S +++ b/arch/arm/mm/cache-v4wt.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/cache-v4wt.S * * Copyright (C) 1997-2002 Russell king * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * ARMv4 write through cache operations support. * * We assume that the write buffer is not enabled. diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S index be68d62566c7..f0f65eb073e4 100644 --- a/arch/arm/mm/cache-v6.S +++ b/arch/arm/mm/cache-v6.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/cache-v6.S * * Copyright (C) 2001 Deep Blue Solutions Ltd. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This is the "shell" of the ARMv6 processor support. */ #include <linux/linkage.h> diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 2149b47a0c5a..0ee8fc4b4672 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/cache-v7.S * * Copyright (C) 2001 Deep Blue Solutions Ltd. * Copyright (C) 2005 ARM Ltd. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This is the "shell" of the ARMv7 processor support. */ #include <linux/linkage.h> @@ -19,6 +16,14 @@ #include "proc-macros.S" +#ifdef CONFIG_CPU_ICACHE_MISMATCH_WORKAROUND +.globl icache_size + .data + .align 2 +icache_size: + .long 64 + .text +#endif /* * The secondary kernel init calls v7_flush_dcache_all before it enables * the L1; however, the L1 comes out of reset in an undefined state, so @@ -163,6 +168,9 @@ loop2: skip: add r10, r10, #2 @ increment cache number cmp r3, r10 +#ifdef CONFIG_ARM_ERRATA_814220 + dsb +#endif bgt flush_levels finished: mov r10, #0 @ switch back to cache level 0 @@ -284,7 +292,12 @@ ENTRY(v7_coherent_user_range) cmp r12, r1 blo 1b dsb ishst +#ifdef CONFIG_CPU_ICACHE_MISMATCH_WORKAROUND + ldr r3, =icache_size + ldr r2, [r3, #0] +#else icache_line_size r2, r3 +#endif sub r3, r2, #1 bic r12, r0, r3 2: diff --git a/arch/arm/mm/cache-v7m.S b/arch/arm/mm/cache-v7m.S index 32aa2a2aa260..a0035c426ce6 100644 --- a/arch/arm/mm/cache-v7m.S +++ b/arch/arm/mm/cache-v7m.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/cache-v7m.S * @@ -6,10 +7,6 @@ * Copyright (C) 2001 Deep Blue Solutions Ltd. * Copyright (C) 2005 ARM Ltd. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This is the "shell" of the ARMv7M processor support. */ #include <linux/linkage.h> diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index c8c8b9ed02e0..b7525b433f3e 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/context.c * @@ -5,10 +6,6 @@ * Copyright (C) 2012 ARM Limited * * Author: Will Deacon <will.deacon@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> #include <linux/sched.h> diff --git a/arch/arm/mm/copypage-fa.c b/arch/arm/mm/copypage-fa.c index bf24690ec83a..7e28c26f5aa4 100644 --- a/arch/arm/mm/copypage-fa.c +++ b/arch/arm/mm/copypage-fa.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/lib/copypage-fa.S * @@ -6,10 +7,6 @@ * * Based on copypage-v4wb.S: * Copyright (C) 1995-1999 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> #include <linux/highmem.h> diff --git a/arch/arm/mm/copypage-feroceon.c b/arch/arm/mm/copypage-feroceon.c index cc819732d9b8..064b19e63571 100644 --- a/arch/arm/mm/copypage-feroceon.c +++ b/arch/arm/mm/copypage-feroceon.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/copypage-feroceon.S * * Copyright (C) 2008 Marvell Semiconductors * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This handles copy_user_highpage and clear_user_page on Feroceon * more optimally than the generic implementations. */ diff --git a/arch/arm/mm/copypage-v4mc.c b/arch/arm/mm/copypage-v4mc.c index f74cdce6d4da..a94bd08fdec2 100644 --- a/arch/arm/mm/copypage-v4mc.c +++ b/arch/arm/mm/copypage-v4mc.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/lib/copypage-armv4mc.S * * Copyright (C) 1995-2005 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This handles the mini data cache, as found on SA11x0 and XScale * processors. When we copy a user page page, we map it in such a way * that accesses to this page will not touch the main data cache, but diff --git a/arch/arm/mm/copypage-v4wb.c b/arch/arm/mm/copypage-v4wb.c index 6d336740aae4..c3581b226459 100644 --- a/arch/arm/mm/copypage-v4wb.c +++ b/arch/arm/mm/copypage-v4wb.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/copypage-v4wb.c * * Copyright (C) 1995-1999 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> #include <linux/highmem.h> diff --git a/arch/arm/mm/copypage-v4wt.c b/arch/arm/mm/copypage-v4wt.c index 3851bb396442..1fb10733305a 100644 --- a/arch/arm/mm/copypage-v4wt.c +++ b/arch/arm/mm/copypage-v4wt.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/copypage-v4wt.S * * Copyright (C) 1995-1999 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This is for CPUs with a writethrough cache and 'flush ID cache' is * the only supported cache operation. */ diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c index a698e575e321..a6488bb6cfa9 100644 --- a/arch/arm/mm/copypage-v6.c +++ b/arch/arm/mm/copypage-v6.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/copypage-v6.c * * Copyright (C) 2002 Deep Blue Solutions Ltd, All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> #include <linux/spinlock.h> diff --git a/arch/arm/mm/copypage-xsc3.c b/arch/arm/mm/copypage-xsc3.c index a08158241ad1..6f0909dda2f9 100644 --- a/arch/arm/mm/copypage-xsc3.c +++ b/arch/arm/mm/copypage-xsc3.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/copypage-xsc3.S * * Copyright (C) 2004 Intel Corp. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Adapted for 3rd gen XScale core, no more mini-dcache * Author: Matt Gilbert (matthew.m.gilbert@intel.com) */ diff --git a/arch/arm/mm/copypage-xscale.c b/arch/arm/mm/copypage-xscale.c index 63b921936754..61d834157bc0 100644 --- a/arch/arm/mm/copypage-xscale.c +++ b/arch/arm/mm/copypage-xscale.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/lib/copypage-xscale.S * * Copyright (C) 1995-2005 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This handles the mini data cache, as found on SA11x0 and XScale * processors. When we copy a user page page, we map it in such a way * that accesses to this page will not touch the main data cache, but diff --git a/arch/arm/mm/dma-mapping-nommu.c b/arch/arm/mm/dma-mapping-nommu.c index f304b10e23a4..52b82559d99b 100644 --- a/arch/arm/mm/dma-mapping-nommu.c +++ b/arch/arm/mm/dma-mapping-nommu.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on linux/arch/arm/mm/dma-mapping.c * * Copyright (C) 2000-2004 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/export.h> @@ -39,18 +35,7 @@ static void *arm_nommu_dma_alloc(struct device *dev, size_t size, unsigned long attrs) { - void *ret; - - /* - * Try generic allocator first if we are advertised that - * consistency is not required. - */ - - if (attrs & DMA_ATTR_NON_CONSISTENT) - return dma_direct_alloc_pages(dev, size, dma_handle, gfp, - attrs); - - ret = dma_alloc_from_global_coherent(size, dma_handle); + void *ret = dma_alloc_from_global_coherent(size, dma_handle); /* * dma_alloc_from_global_coherent() may fail because: @@ -70,16 +55,9 @@ static void arm_nommu_dma_free(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_addr, unsigned long attrs) { - if (attrs & DMA_ATTR_NON_CONSISTENT) { - dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs); - } else { - int ret = dma_release_from_global_coherent(get_order(size), - cpu_addr); - - WARN_ON_ONCE(ret == 0); - } + int ret = dma_release_from_global_coherent(get_order(size), cpu_addr); - return; + WARN_ON_ONCE(ret == 0); } static int arm_nommu_dma_mmap(struct device *dev, struct vm_area_struct *vma, diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 0a75058c11f3..4789c60a86e3 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/dma-mapping.c * * Copyright (C) 2000-2004 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * DMA uncached mapping support. */ #include <linux/module.h> @@ -219,25 +216,7 @@ EXPORT_SYMBOL(arm_coherent_dma_ops); static int __dma_supported(struct device *dev, u64 mask, bool warn) { - unsigned long max_dma_pfn; - - /* - * If the mask allows for more memory than we can address, - * and we actually have that much memory, then we must - * indicate that DMA to this device is not supported. - */ - if (sizeof(mask) != sizeof(dma_addr_t) && - mask > (dma_addr_t)~0 && - dma_to_pfn(dev, ~0) < max_pfn - 1) { - if (warn) { - dev_warn(dev, "Coherent DMA mask %#llx is larger than dma_addr_t allows\n", - mask); - dev_warn(dev, "Driver did not use or check the return value from dma_set_coherent_mask()?\n"); - } - return 0; - } - - max_dma_pfn = min(max_pfn, arm_dma_pfn_limit); + unsigned long max_dma_pfn = min(max_pfn, arm_dma_pfn_limit); /* * Translate the device's DMA mask to a PFN limit. This @@ -496,8 +475,7 @@ void __init dma_contiguous_remap(void) } } -static int __dma_update_pte(pte_t *pte, pgtable_t token, unsigned long addr, - void *data) +static int __dma_update_pte(pte_t *pte, unsigned long addr, void *data) { struct page *page = virt_to_page(addr); pgprot_t prot = *(pgprot_t *)data; diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c index 006d27ee4fc6..7d6291f23251 100644 --- a/arch/arm/mm/dump.c +++ b/arch/arm/mm/dump.c @@ -446,7 +446,7 @@ void ptdump_check_wx(void) static int ptdump_init(void) { ptdump_initialize(); - return ptdump_debugfs_register(&kernel_ptdump_info, - "kernel_page_tables"); + ptdump_debugfs_register(&kernel_ptdump_info, "kernel_page_tables"); + return 0; } __initcall(ptdump_init); diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index 4d75dae5ac96..ae857f41f68d 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/fault-armv.c * * Copyright (C) 1995 Linus Torvalds * Modifications for ARM processor (c) 1995-2002 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/sched.h> #include <linux/kernel.h> diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index 58f69fa07df9..890eeaac3cbb 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/fault.c * * Copyright (C) 1995 Linus Torvalds * Modifications for ARM processor (c) 1995-2004 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/extable.h> #include <linux/signal.h> @@ -30,43 +27,20 @@ #ifdef CONFIG_MMU -#ifdef CONFIG_KPROBES -static inline int notify_page_fault(struct pt_regs *regs, unsigned int fsr) -{ - int ret = 0; - - if (!user_mode(regs)) { - /* kprobe_running() needs smp_processor_id() */ - preempt_disable(); - if (kprobe_running() && kprobe_fault_handler(regs, fsr)) - ret = 1; - preempt_enable(); - } - - return ret; -} -#else -static inline int notify_page_fault(struct pt_regs *regs, unsigned int fsr) -{ - return 0; -} -#endif - /* * This is useful to dump out the page tables associated with * 'addr' in mm 'mm'. */ -void show_pte(struct mm_struct *mm, unsigned long addr) +void show_pte(const char *lvl, struct mm_struct *mm, unsigned long addr) { pgd_t *pgd; if (!mm) mm = &init_mm; - pr_alert("pgd = %p\n", mm->pgd); + printk("%spgd = %p\n", lvl, mm->pgd); pgd = pgd_offset(mm, addr); - pr_alert("[%08lx] *pgd=%08llx", - addr, (long long)pgd_val(*pgd)); + printk("%s[%08lx] *pgd=%08llx", lvl, addr, (long long)pgd_val(*pgd)); do { pud_t *pud; @@ -121,7 +95,7 @@ void show_pte(struct mm_struct *mm, unsigned long addr) pr_cont("\n"); } #else /* CONFIG_MMU */ -void show_pte(struct mm_struct *mm, unsigned long addr) +void show_pte(const char *lvl, struct mm_struct *mm, unsigned long addr) { } #endif /* CONFIG_MMU */ @@ -142,11 +116,12 @@ __do_kernel_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr, * No handler, we'll have to terminate things with extreme prejudice. */ bust_spinlocks(1); + pr_alert("8<--- cut here ---\n"); pr_alert("Unable to handle kernel %s at virtual address %08lx\n", (addr < PAGE_SIZE) ? "NULL pointer dereference" : "paging request", addr); - show_pte(mm, addr); + show_pte(KERN_ALERT, mm, addr); die("Oops", regs, fsr); bust_spinlocks(0); do_exit(SIGKILL); @@ -157,19 +132,21 @@ __do_kernel_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr, * User mode accesses just cause a SIGSEGV */ static void -__do_user_fault(struct task_struct *tsk, unsigned long addr, - unsigned int fsr, unsigned int sig, int code, - struct pt_regs *regs) +__do_user_fault(unsigned long addr, unsigned int fsr, unsigned int sig, + int code, struct pt_regs *regs) { + struct task_struct *tsk = current; + if (addr > TASK_SIZE) harden_branch_predictor(); #ifdef CONFIG_DEBUG_USER if (((user_debug & UDBG_SEGV) && (sig == SIGSEGV)) || ((user_debug & UDBG_BUS) && (sig == SIGBUS))) { - printk(KERN_DEBUG "%s: unhandled page fault (%d) at 0x%08lx, code 0x%03x\n", + pr_err("8<--- cut here ---\n"); + pr_err("%s: unhandled page fault (%d) at 0x%08lx, code 0x%03x\n", tsk->comm, sig, addr, fsr); - show_pte(tsk->mm, addr); + show_pte(KERN_ERR, tsk->mm, addr); show_regs(regs); } #endif @@ -183,7 +160,7 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr, tsk->thread.address = addr; tsk->thread.error_code = fsr; tsk->thread.trap_no = 14; - force_sig_fault(sig, code, (void __user *)addr, tsk); + force_sig_fault(sig, code, (void __user *)addr); } void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs) @@ -196,7 +173,7 @@ void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs) * have no context to handle this fault with. */ if (user_mode(regs)) - __do_user_fault(tsk, addr, fsr, SIGSEGV, SEGV_MAPERR, regs); + __do_user_fault(addr, fsr, SIGSEGV, SEGV_MAPERR, regs); else __do_kernel_fault(mm, addr, fsr, regs); } @@ -266,7 +243,7 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) vm_fault_t fault; unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; - if (notify_page_fault(regs, fsr)) + if (kprobe_page_fault(regs, fsr)) return 0; tsk = current; @@ -392,7 +369,7 @@ retry: SEGV_ACCERR : SEGV_MAPERR; } - __do_user_fault(tsk, addr, fsr, sig, code, regs); + __do_user_fault(addr, fsr, sig, code, regs); return 0; no_context: @@ -556,9 +533,10 @@ do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs) if (!inf->fn(addr, fsr & ~FSR_LNX_PF, regs)) return; + pr_alert("8<--- cut here ---\n"); pr_alert("Unhandled fault: %s (0x%03x) at 0x%08lx\n", inf->name, fsr, addr); - show_pte(current->mm, addr); + show_pte(KERN_ALERT, current->mm, addr); arm_notify_die("", regs, inf->sig, inf->code, (void __user *)addr, fsr, 0); diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index 58469623b015..6ecbda87ee46 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/flush.c * * Copyright (C) 1995-2002 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/mm.h> diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c index d02f8187b1cc..a76f8ace9ce6 100644 --- a/arch/arm/mm/highmem.c +++ b/arch/arm/mm/highmem.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm/mm/highmem.c -- ARM highmem support * * Author: Nicolas Pitre * Created: september 8, 2008 * Copyright: Marvell Semiconductors Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index be0b42937888..4920a206dce9 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/init.c * * Copyright (C) 1995-2005 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kernel.h> #include <linux/errno.h> @@ -242,6 +239,22 @@ static void __init arm_initrd_init(void) #endif } +#ifdef CONFIG_CPU_ICACHE_MISMATCH_WORKAROUND +void check_cpu_icache_size(int cpuid) +{ + u32 size, ctr; + + asm("mrc p15, 0, %0, c0, c0, 1" : "=r" (ctr)); + + size = 1 << ((ctr & 0xf) + 2); + if (cpuid != 0 && icache_size != size) + pr_info("CPU%u: detected I-Cache line size mismatch, workaround enabled\n", + cpuid); + if (icache_size > size) + icache_size = size; +} +#endif + void __init arm_memblock_init(const struct machine_desc *mdesc) { /* Register the kernel text, kernel data and initrd with memblock. */ @@ -450,12 +463,6 @@ static void __init free_highpages(void) */ void __init mem_init(void) { -#ifdef CONFIG_HAVE_TCM - /* These pointers are filled in on TCM detection */ - extern u32 dtcm_end; - extern u32 itcm_end; -#endif - set_max_mapnr(pfn_to_page(max_pfn) - mem_map); /* this will put all unused low memory onto the freelists */ diff --git a/arch/arm/mm/l2c-common.c b/arch/arm/mm/l2c-common.c index 10a3cf28c362..073b435ae0fe 100644 --- a/arch/arm/mm/l2c-common.c +++ b/arch/arm/mm/l2c-common.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2010 ARM Ltd. * Written by Catalin Marinas <catalin.marinas@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/bug.h> #include <linux/smp.h> diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h index 6b045c6653ea..941356d95a67 100644 --- a/arch/arm/mm/mm.h +++ b/arch/arm/mm/mm.h @@ -8,6 +8,8 @@ /* the upper-most page table pointer */ extern pmd_t *top_pmd; +extern int icache_size; + /* * 0xffff8000 to 0xffffffff is reserved for any ARM architecture * specific hacks for copying pages efficiently, while 0xffff4000 diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index f3ce34113f89..d9a0038774a6 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/mmu.c * * Copyright (C) 1995-2005 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/kernel.h> @@ -732,7 +729,7 @@ static void __init *early_alloc(unsigned long sz) static void *__init late_alloc(unsigned long sz) { - void *ptr = (void *)__get_free_pages(PGALLOC_GFP, get_order(sz)); + void *ptr = (void *)__get_free_pages(GFP_PGTABLE_KERNEL, get_order(sz)); if (!ptr || !pgtable_page_ctor(virt_to_page(ptr))) BUG(); diff --git a/arch/arm/mm/pageattr.c b/arch/arm/mm/pageattr.c index 0f5faf30d9bf..d546efad7e97 100644 --- a/arch/arm/mm/pageattr.c +++ b/arch/arm/mm/pageattr.c @@ -14,8 +14,7 @@ struct page_change_data { pgprot_t clear_mask; }; -static int change_page_range(pte_t *ptep, pgtable_t token, unsigned long addr, - void *data) +static int change_page_range(pte_t *ptep, unsigned long addr, void *data) { struct page_change_data *cdata = data; pte_t pte = *ptep; diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c index a1606d950251..478bd2c6aa50 100644 --- a/arch/arm/mm/pgd.c +++ b/arch/arm/mm/pgd.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/pgd.c * * Copyright (C) 1998-2005 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/mm.h> #include <linux/gfp.h> diff --git a/arch/arm/mm/proc-arm740.S b/arch/arm/mm/proc-arm740.S index 024fb7732407..1b4a3838393f 100644 --- a/arch/arm/mm/proc-arm740.S +++ b/arch/arm/mm/proc-arm740.S @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/arm740.S: utility functions for ARM740 * * Copyright (C) 2004-2006 Hyok S. Choi (hyok.choi@samsung.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/linkage.h> #include <linux/init.h> diff --git a/arch/arm/mm/proc-arm7tdmi.S b/arch/arm/mm/proc-arm7tdmi.S index 25472d94426d..17a4687065c7 100644 --- a/arch/arm/mm/proc-arm7tdmi.S +++ b/arch/arm/mm/proc-arm7tdmi.S @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-arm7tdmi.S: utility functions for ARM7TDMI * * Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/linkage.h> #include <linux/init.h> diff --git a/arch/arm/mm/proc-arm940.S b/arch/arm/mm/proc-arm940.S index ee5b66f847c4..1c26d991386d 100644 --- a/arch/arm/mm/proc-arm940.S +++ b/arch/arm/mm/proc-arm940.S @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/arm940.S: utility functions for ARM940T * * Copyright (C) 2004-2006 Hyok S. Choi (hyok.choi@samsung.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/linkage.h> #include <linux/init.h> diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S index 7361837edc31..2dc1c75a4fd4 100644 --- a/arch/arm/mm/proc-arm946.S +++ b/arch/arm/mm/proc-arm946.S @@ -1,14 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/arm946.S: utility functions for ARM946E-S * * Copyright (C) 2004-2006 Hyok S. Choi (hyok.choi@samsung.com) * * (Many of cache codes are from proc-arm926.S) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/linkage.h> #include <linux/init.h> diff --git a/arch/arm/mm/proc-arm9tdmi.S b/arch/arm/mm/proc-arm9tdmi.S index 7fac8c612134..913c06e590af 100644 --- a/arch/arm/mm/proc-arm9tdmi.S +++ b/arch/arm/mm/proc-arm9tdmi.S @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI * * Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/linkage.h> #include <linux/init.h> diff --git a/arch/arm/mm/proc-sa110.S b/arch/arm/mm/proc-sa110.S index ee2ce496239f..d5bc5d702563 100644 --- a/arch/arm/mm/proc-sa110.S +++ b/arch/arm/mm/proc-sa110.S @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-sa110.S * * Copyright (C) 1997-2002 Russell King * hacked for non-paged-MM by Hyok S. Choi, 2003. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * MMU functions for SA110 * * These are the low level assembler for performing cache and TLB diff --git a/arch/arm/mm/proc-sa1100.S b/arch/arm/mm/proc-sa1100.S index 222d5836f666..be7b611c76c7 100644 --- a/arch/arm/mm/proc-sa1100.S +++ b/arch/arm/mm/proc-sa1100.S @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-sa1100.S * * Copyright (C) 1997-2002 Russell King * hacked for non-paged-MM by Hyok S. Choi, 2003. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * MMU functions for SA110 * * These are the low level assembler for performing cache and TLB diff --git a/arch/arm/mm/proc-syms.c b/arch/arm/mm/proc-syms.c index 054b491ff764..e21249548e9f 100644 --- a/arch/arm/mm/proc-syms.c +++ b/arch/arm/mm/proc-syms.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mm/proc-syms.c * * Copyright (C) 2000-2002 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/mm.h> diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index 06d890a2342b..c1c85eb3484f 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-v6.S * * Copyright (C) 2001 Deep Blue Solutions Ltd. * Modified by Catalin Marinas for noMMU support * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This is the "shell" of the ARMv6 processor support. */ #include <linux/init.h> diff --git a/arch/arm/mm/proc-v7-2level.S b/arch/arm/mm/proc-v7-2level.S index f8d45ad2a515..5db029c8f987 100644 --- a/arch/arm/mm/proc-v7-2level.S +++ b/arch/arm/mm/proc-v7-2level.S @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * arch/arm/mm/proc-v7-2level.S * * Copyright (C) 2001 Deep Blue Solutions Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define TTB_S (1 << 1) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 339eb17c9808..c4e8006a1a8c 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-v7.S * * Copyright (C) 2001 Deep Blue Solutions Ltd. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This is the "shell" of the ARMv7 processor support. */ #include <linux/arm-smccc.h> @@ -392,6 +389,11 @@ __ca12_errata: orr r10, r10, #1 << 24 @ set bit #24 mcr p15, 0, r10, c15, c0, 1 @ write diagnostic register #endif +#ifdef CONFIG_ARM_ERRATA_857271 + mrc p15, 0, r10, c15, c0, 1 @ read diagnostic register + orr r10, r10, #3 << 10 @ set bits #10 and #11 + mcr p15, 0, r10, c15, c0, 1 @ write diagnostic register +#endif b __errata_finish __ca17_errata: @@ -407,6 +409,11 @@ __ca17_errata: orrle r10, r10, #1 << 12 @ set bit #12 mcrle p15, 0, r10, c15, c0, 1 @ write diagnostic register #endif +#ifdef CONFIG_ARM_ERRATA_857272 + mrc p15, 0, r10, c15, c0, 1 @ read diagnostic register + orr r10, r10, #3 << 10 @ set bits #10 and #11 + mcr p15, 0, r10, c15, c0, 1 @ write diagnostic register +#endif b __errata_finish __v7_pj4b_setup: diff --git a/arch/arm/mm/proc-v7m.S b/arch/arm/mm/proc-v7m.S index acd5a66dfc23..1448f144e7fb 100644 --- a/arch/arm/mm/proc-v7m.S +++ b/arch/arm/mm/proc-v7m.S @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-v7m.S * * Copyright (C) 2008 ARM Ltd. * Copyright (C) 2001 Deep Blue Solutions Ltd. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This is the "shell" of the ARMv7-M processor support. */ #include <linux/linkage.h> diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S index 293dcc2c441f..1ac0fbbe9f12 100644 --- a/arch/arm/mm/proc-xsc3.S +++ b/arch/arm/mm/proc-xsc3.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-xsc3.S * @@ -7,10 +8,6 @@ * Copyright 2004 (C) Intel Corp. * Copyright 2005 (C) MontaVista Software, Inc. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * MMU functions for the Intel XScale3 Core (XSC3). The XSC3 core is * an extension to Intel's original XScale core that adds the following * features: diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S index 3d75b7972fd1..bdb2b7749b03 100644 --- a/arch/arm/mm/proc-xscale.S +++ b/arch/arm/mm/proc-xscale.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/proc-xscale.S * @@ -5,10 +6,6 @@ * Created: November 2000 * Copyright: (C) 2000, 2001 MontaVista Software Inc. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * MMU functions for the Intel XScale CPUs * * 2001 Aug 21: diff --git a/arch/arm/mm/ptdump_debugfs.c b/arch/arm/mm/ptdump_debugfs.c index be8d87be4b93..598b636615a2 100644 --- a/arch/arm/mm/ptdump_debugfs.c +++ b/arch/arm/mm/ptdump_debugfs.c @@ -24,11 +24,7 @@ static const struct file_operations ptdump_fops = { .release = single_release, }; -int ptdump_debugfs_register(struct ptdump_info *info, const char *name) +void ptdump_debugfs_register(struct ptdump_info *info, const char *name) { - struct dentry *pe; - - pe = debugfs_create_file(name, 0400, NULL, info, &ptdump_fops); - return pe ? 0 : -ENOMEM; - + debugfs_create_file(name, 0400, NULL, info, &ptdump_fops); } diff --git a/arch/arm/mm/pv-fixup-asm.S b/arch/arm/mm/pv-fixup-asm.S index fd2ff9034d17..769778928356 100644 --- a/arch/arm/mm/pv-fixup-asm.S +++ b/arch/arm/mm/pv-fixup-asm.S @@ -1,10 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2015 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This assembly is required to safely remap the physical address space * for Keystone 2 */ diff --git a/arch/arm/mm/tlb-fa.S b/arch/arm/mm/tlb-fa.S index d2d9ecbe0aac..def6161ec452 100644 --- a/arch/arm/mm/tlb-fa.S +++ b/arch/arm/mm/tlb-fa.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/tlb-fa.S * @@ -7,10 +8,6 @@ * Based on tlb-v4wbi.S: * Copyright (C) 1997-2002 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * ARM architecture version 4, Faraday variation. * This assume an unified TLBs, with a write buffer, and branch target buffer (BTB) * diff --git a/arch/arm/mm/tlb-v4.S b/arch/arm/mm/tlb-v4.S index a2b5dca42048..b962b4e75158 100644 --- a/arch/arm/mm/tlb-v4.S +++ b/arch/arm/mm/tlb-v4.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/tlbv4.S * * Copyright (C) 1997-2002 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * ARM architecture version 4 TLB handling functions. * These assume a split I/D TLBs, and no write buffer. * diff --git a/arch/arm/mm/tlb-v4wb.S b/arch/arm/mm/tlb-v4wb.S index 5a093b458dbc..9348bba7586a 100644 --- a/arch/arm/mm/tlb-v4wb.S +++ b/arch/arm/mm/tlb-v4wb.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/tlbv4wb.S * * Copyright (C) 1997-2002 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * ARM architecture version 4 TLB handling functions. * These assume a split I/D TLBs w/o I TLB entry, with a write buffer. * diff --git a/arch/arm/mm/tlb-v4wbi.S b/arch/arm/mm/tlb-v4wbi.S index 058861548f68..d4f9040a4111 100644 --- a/arch/arm/mm/tlb-v4wbi.S +++ b/arch/arm/mm/tlb-v4wbi.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/tlbv4wbi.S * * Copyright (C) 1997-2002 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * ARM architecture version 4 and version 5 TLB handling functions. * These assume a split I/D TLBs, with a write buffer. * diff --git a/arch/arm/mm/tlb-v6.S b/arch/arm/mm/tlb-v6.S index 6f689be638bd..5335b9687297 100644 --- a/arch/arm/mm/tlb-v6.S +++ b/arch/arm/mm/tlb-v6.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/tlb-v6.S * * Copyright (C) 1997-2002 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * ARM architecture version 6 TLB handling functions. * These assume a split I/D TLB. */ diff --git a/arch/arm/mm/tlb-v7.S b/arch/arm/mm/tlb-v7.S index e5101a3bc57c..1bb28d7db567 100644 --- a/arch/arm/mm/tlb-v7.S +++ b/arch/arm/mm/tlb-v7.S @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/tlb-v7.S * * Copyright (C) 1997-2002 Russell King * Modified for ARMv7 by Catalin Marinas * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * ARM architecture version 6 TLB handling functions. * These assume a split I/D TLB. */ |