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VSTa manual pages  - PAGE_WIRE (2)

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page_wire - lock down pages to physical memory

CONTENTS

Synopsis
Description
Notes

#include <sys/syscall.h>
int page_wire(void *vaddr, void **paddr);

The page_wire() system call locks a virtual page’s contents down to a physical page, whose corresponding physical address is placed in the location pointed to by paddr.

The return value is either -1, indicating failure, or a handle used in a later call to page_release().

This call is generally useful only to DMA-based I/O servers.