acrn-kernel/arch/um/include/mem.h

40 lines
1.0 KiB
C

/*
* Copyright (C) 2002, 2003 Jeff Dike (jdike@addtoit.com)
* Licensed under the GPL
*/
#ifndef __MEM_H__
#define __MEM_H__
#include "linux/types.h"
extern int phys_mapping(unsigned long phys, __u64 *offset_out);
extern int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w);
extern int is_remapped(void *virt);
extern int physmem_remove_mapping(void *virt);
extern void physmem_forget_descriptor(int fd);
extern unsigned long uml_physmem;
static inline unsigned long to_phys(void *virt)
{
return(((unsigned long) virt) - uml_physmem);
}
static inline void *to_virt(unsigned long phys)
{
return((void *) uml_physmem + phys);
}
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/