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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_RISCV_IRQ_STACK_H
#define _ASM_RISCV_IRQ_STACK_H
#include <linux/bug.h>
#include <linux/gfp.h>
#include <linux/kconfig.h>
#include <linux/vmalloc.h>
#include <linux/pgtable.h>
#include <asm/thread_info.h>
DECLARE_PER_CPU(ulong *, irq_stack_ptr);
asmlinkage void call_on_irq_stack(struct pt_regs *regs,
void (*func)(struct pt_regs *));
#ifdef CONFIG_VMAP_STACK
/*
* To ensure that VMAP'd stack overflow detection works correctly, all VMAP'd
* stacks need to have the same alignment.
*/
static inline unsigned long *arch_alloc_vmap_stack(size_t stack_size, int node)
{
void *p;
p = __vmalloc_node(stack_size, THREAD_ALIGN, THREADINFO_GFP, node,
__builtin_return_address(0));
return kasan_reset_tag(p);
}
#endif /* CONFIG_VMAP_STACK */
#endif /* _ASM_RISCV_IRQ_STACK_H */
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