From fb37409a01b011a664347702f44dbf13fa7c7486 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Wed, 10 Jun 2020 09:45:20 +0300 Subject: arch: remove unicore32 port The unicore32 port do not seem maintained for a long time now, there is no upstream toolchain that can create unicore32 binaries and all the links to prebuilt toolchains for unicore32 are dead. Even compilers that were available are not supported by the kernel anymore. Guenter Roeck says: I have stopped building unicore32 images since v4.19 since there is no available compiler that is still supported by the kernel. I am surprised that support for it has not been removed from the kernel. Remove unicore32 port. Signed-off-by: Mike Rapoport Acked-by: Arnd Bergmann Acked-by: Guenter Roeck --- arch/unicore32/include/asm/mmu_context.h | 98 -------------------------------- 1 file changed, 98 deletions(-) delete mode 100644 arch/unicore32/include/asm/mmu_context.h (limited to 'arch/unicore32/include/asm/mmu_context.h') diff --git a/arch/unicore32/include/asm/mmu_context.h b/arch/unicore32/include/asm/mmu_context.h deleted file mode 100644 index 388c0c811c68..000000000000 --- a/arch/unicore32/include/asm/mmu_context.h +++ /dev/null @@ -1,98 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * linux/arch/unicore32/include/asm/mmu_context.h - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Copyright (C) 2001-2010 GUAN Xue-tao - */ -#ifndef __UNICORE_MMU_CONTEXT_H__ -#define __UNICORE_MMU_CONTEXT_H__ - -#include -#include -#include -#include -#include - -#include -#include - -#define init_new_context(tsk, mm) 0 - -#define destroy_context(mm) do { } while (0) - -/* - * This is called when "tsk" is about to enter lazy TLB mode. - * - * mm: describes the currently active mm context - * tsk: task which is entering lazy tlb - * cpu: cpu number which is entering lazy tlb - * - * tsk->mm will be NULL - */ -static inline void -enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) -{ -} - -/* - * This is the actual mm switch as far as the scheduler - * is concerned. No registers are touched. We avoid - * calling the CPU specific function when the mm hasn't - * actually changed. - */ -static inline void -switch_mm(struct mm_struct *prev, struct mm_struct *next, - struct task_struct *tsk) -{ - unsigned int cpu = smp_processor_id(); - - if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next) - cpu_switch_mm(next->pgd, next); -} - -#define deactivate_mm(tsk, mm) do { } while (0) -#define activate_mm(prev, next) switch_mm(prev, next, NULL) - -/* - * We are inserting a "fake" vma for the user-accessible vector page so - * gdb and friends can get to it through ptrace and /proc//mem. - * But we also want to remove it before the generic code gets to see it - * during process exit or the unmapping of it would cause total havoc. - * (the macro is used as remove_vma() is static to mm/mmap.c) - */ -#define arch_exit_mmap(mm) \ -do { \ - struct vm_area_struct *high_vma = find_vma(mm, 0xffff0000); \ - if (high_vma) { \ - BUG_ON(high_vma->vm_next); /* it should be last */ \ - if (high_vma->vm_prev) \ - high_vma->vm_prev->vm_next = NULL; \ - else \ - mm->mmap = NULL; \ - rb_erase(&high_vma->vm_rb, &mm->mm_rb); \ - vmacache_invalidate(mm); \ - mm->map_count--; \ - remove_vma(high_vma); \ - } \ -} while (0) - -static inline int arch_dup_mmap(struct mm_struct *oldmm, - struct mm_struct *mm) -{ - return 0; -} - -static inline void arch_unmap(struct mm_struct *mm, - unsigned long start, unsigned long end) -{ -} - -static inline bool arch_vma_access_permitted(struct vm_area_struct *vma, - bool write, bool execute, bool foreign) -{ - /* by default, allow everything */ - return true; -} -#endif -- cgit v1.2.3