53c99bd665
With CONFIG_VMAP_STACK=y the kernel stack of all tasks should be allocated in the vmalloc space. The initial stack used for all the early init code is in the init_thread_union. To be able to switch from this early stack to a properly allocated stack from vmalloc the architecture needs a switch-over point. Introduce the arch_call_rest_init() function with a weak definition in init/main.c with the only purpose to call rest_init() from the end of start_kernel(). The architecture override can then do the necessary magic to switch to the new vmalloc'ed stack. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
16 lines
415 B
C
16 lines
415 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_START_KERNEL_H
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#define _LINUX_START_KERNEL_H
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#include <linux/linkage.h>
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#include <linux/init.h>
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/* Define the prototype for start_kernel here, rather than cluttering
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up something else. */
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extern asmlinkage void __init start_kernel(void);
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extern void __init arch_call_rest_init(void);
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extern void __ref rest_init(void);
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#endif /* _LINUX_START_KERNEL_H */
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