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| 2 |
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| 3 | #ifndef _ASM_RISCV_IRQ_STACK_H
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| 4 | #define _ASM_RISCV_IRQ_STACK_H
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| 5 |
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| 6 | #include <linux/bug.h>
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| 7 | #include <linux/gfp.h>
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| 8 | #include <linux/kconfig.h>
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| 9 | #include <linux/vmalloc.h>
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| 10 | #include <linux/pgtable.h>
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| 11 | #include <asm/thread_info.h>
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| 12 |
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| 13 | DECLARE_PER_CPU(ulong *, irq_stack_ptr);
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| 14 |
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| 15 | asmlinkage void call_on_irq_stack(struct pt_regs *regs,
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| 16 | void (*func)(struct pt_regs *));
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| 17 |
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| 18 | #ifdef CONFIG_VMAP_STACK
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| 19 | |
| 20 | * To ensure that VMAP'd stack overflow detection works correctly, all VMAP'd
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| 21 | * stacks need to have the same alignment.
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| 22 |
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| 23 | static inline unsigned long *arch_alloc_vmap_stack(size_t stack_size, int node)
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| 24 | {
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| 25 | void *p;
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| 26 |
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| 27 | p = __vmalloc_node(stack_size, THREAD_ALIGN, THREADINFO_GFP, node,
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| 28 | __builtin_return_address(0));
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| 29 | return kasan_reset_tag(p);
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| 30 | }
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| 31 | #endif
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| 32 |
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| 33 | #endif
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