diff options
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/dma-mapping.h | 10 | ||||
| -rw-r--r-- | include/asm-generic/error-injection.h | 35 | ||||
| -rw-r--r-- | include/asm-generic/mm_hooks.h | 5 | ||||
| -rw-r--r-- | include/asm-generic/pgtable.h | 42 | ||||
| -rw-r--r-- | include/asm-generic/sections.h | 8 | ||||
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 14 |
6 files changed, 99 insertions, 15 deletions
diff --git a/include/asm-generic/dma-mapping.h b/include/asm-generic/dma-mapping.h new file mode 100644 index 000000000000..880a292d792f --- /dev/null +++ b/include/asm-generic/dma-mapping.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_GENERIC_DMA_MAPPING_H +#define _ASM_GENERIC_DMA_MAPPING_H + +static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) +{ + return &dma_direct_ops; +} + +#endif /* _ASM_GENERIC_DMA_MAPPING_H */ diff --git a/include/asm-generic/error-injection.h b/include/asm-generic/error-injection.h new file mode 100644 index 000000000000..296c65442f00 --- /dev/null +++ b/include/asm-generic/error-injection.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_GENERIC_ERROR_INJECTION_H +#define _ASM_GENERIC_ERROR_INJECTION_H + +#if defined(__KERNEL__) && !defined(__ASSEMBLY__) +enum { + EI_ETYPE_NONE, /* Dummy value for undefined case */ + EI_ETYPE_NULL, /* Return NULL if failure */ + EI_ETYPE_ERRNO, /* Return -ERRNO if failure */ + EI_ETYPE_ERRNO_NULL, /* Return -ERRNO or NULL if failure */ +}; + +struct error_injection_entry { + unsigned long addr; + int etype; +}; + +#ifdef CONFIG_FUNCTION_ERROR_INJECTION +/* + * Whitelist ganerating macro. Specify functions which can be + * error-injectable using this macro. + */ +#define ALLOW_ERROR_INJECTION(fname, _etype) \ +static struct error_injection_entry __used \ + __attribute__((__section__("_error_injection_whitelist"))) \ + _eil_addr_##fname = { \ + .addr = (unsigned long)fname, \ + .etype = EI_ETYPE_##_etype, \ + }; +#else +#define ALLOW_ERROR_INJECTION(fname, _etype) +#endif +#endif + +#endif /* _ASM_GENERIC_ERROR_INJECTION_H */ diff --git a/include/asm-generic/mm_hooks.h b/include/asm-generic/mm_hooks.h index ea189d88a3cc..8ac4e68a12f0 100644 --- a/include/asm-generic/mm_hooks.h +++ b/include/asm-generic/mm_hooks.h @@ -7,9 +7,10 @@ #ifndef _ASM_GENERIC_MM_HOOKS_H #define _ASM_GENERIC_MM_HOOKS_H -static inline void arch_dup_mmap(struct mm_struct *oldmm, - struct mm_struct *mm) +static inline int arch_dup_mmap(struct mm_struct *oldmm, + struct mm_struct *mm) { + return 0; } static inline void arch_exit_mmap(struct mm_struct *mm) diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 757dc6ffc7ba..2cfa3075d148 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -309,19 +309,26 @@ extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); #endif -#ifndef __HAVE_ARCH_PMDP_INVALIDATE -extern void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, - pmd_t *pmdp); -#endif - -#ifndef __HAVE_ARCH_PMDP_HUGE_SPLIT_PREPARE -static inline void pmdp_huge_split_prepare(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp) +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +/* + * This is an implementation of pmdp_establish() that is only suitable for an + * architecture that doesn't have hardware dirty/accessed bits. In this case we + * can't race with CPU which sets these bits and non-atomic aproach is fine. + */ +static inline pmd_t generic_pmdp_establish(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp, pmd_t pmd) { - + pmd_t old_pmd = *pmdp; + set_pmd_at(vma->vm_mm, address, pmdp, pmd); + return old_pmd; } #endif +#ifndef __HAVE_ARCH_PMDP_INVALIDATE +extern pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, + pmd_t *pmdp); +#endif + #ifndef __HAVE_ARCH_PTE_SAME static inline int pte_same(pte_t pte_a, pte_t pte_b) { @@ -805,15 +812,23 @@ static inline int pmd_trans_huge(pmd_t pmd) { return 0; } -#ifndef __HAVE_ARCH_PMD_WRITE +#ifndef pmd_write static inline int pmd_write(pmd_t pmd) { BUG(); return 0; } -#endif /* __HAVE_ARCH_PMD_WRITE */ +#endif /* pmd_write */ #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ +#ifndef pud_write +static inline int pud_write(pud_t pud) +{ + BUG(); + return 0; +} +#endif /* pud_write */ + #if !defined(CONFIG_TRANSPARENT_HUGEPAGE) || \ (defined(CONFIG_TRANSPARENT_HUGEPAGE) && \ !defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)) @@ -1017,6 +1032,11 @@ static inline int pmd_clear_huge(pmd_t *pmd) struct file; int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn, unsigned long size, pgprot_t *vma_prot); + +#ifndef CONFIG_X86_ESPFIX64 +static inline void init_espfix_bsp(void) { } +#endif + #endif /* !__ASSEMBLY__ */ #ifndef io_remap_pfn_range diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h index 03cc5f9bba71..849cd8eb5ca0 100644 --- a/include/asm-generic/sections.h +++ b/include/asm-generic/sections.h @@ -30,6 +30,7 @@ * __ctors_start, __ctors_end * __irqentry_text_start, __irqentry_text_end * __softirqentry_text_start, __softirqentry_text_end + * __start_opd, __end_opd */ extern char _text[], _stext[], _etext[]; extern char _data[], _sdata[], _edata[]; @@ -49,12 +50,15 @@ extern char __start_once[], __end_once[]; /* Start and end of .ctors section - used for constructor calls. */ extern char __ctors_start[], __ctors_end[]; +/* Start and end of .opd section - used for function descriptors. */ +extern char __start_opd[], __end_opd[]; + extern __visible const void __nosave_begin, __nosave_end; -/* function descriptor handling (if any). Override - * in asm/sections.h */ +/* Function descriptor handling (if any). Override in asm/sections.h */ #ifndef dereference_function_descriptor #define dereference_function_descriptor(p) (p) +#define dereference_kernel_function_descriptor(p) (p) #endif /* random extra sections (if any). Override diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index ee8b707d9fa9..1ab0e520d6fc 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -136,6 +136,15 @@ #define KPROBE_BLACKLIST() #endif +#ifdef CONFIG_FUNCTION_ERROR_INJECTION +#define ERROR_INJECT_WHITELIST() STRUCT_ALIGN(); \ + VMLINUX_SYMBOL(__start_error_injection_whitelist) = .;\ + KEEP(*(_error_injection_whitelist)) \ + VMLINUX_SYMBOL(__stop_error_injection_whitelist) = .; +#else +#define ERROR_INJECT_WHITELIST() +#endif + #ifdef CONFIG_EVENT_TRACING #define FTRACE_EVENTS() . = ALIGN(8); \ VMLINUX_SYMBOL(__start_ftrace_events) = .; \ @@ -268,7 +277,11 @@ #define INIT_TASK_DATA(align) \ . = ALIGN(align); \ VMLINUX_SYMBOL(__start_init_task) = .; \ + VMLINUX_SYMBOL(init_thread_union) = .; \ + VMLINUX_SYMBOL(init_stack) = .; \ *(.data..init_task) \ + *(.data..init_thread_info) \ + . = VMLINUX_SYMBOL(__start_init_task) + THREAD_SIZE; \ VMLINUX_SYMBOL(__end_init_task) = .; /* @@ -564,6 +577,7 @@ FTRACE_EVENTS() \ TRACE_SYSCALLS() \ KPROBE_BLACKLIST() \ + ERROR_INJECT_WHITELIST() \ MEM_DISCARD(init.rodata) \ CLK_OF_TABLES() \ RESERVEDMEM_OF_TABLES() \ |