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TOMOYO Linux Cross Reference
Linux/arch/x86/kernel/pmem.c

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  1 /*
  2  * Copyright (c) 2015, Christoph Hellwig.
  3  * Copyright (c) 2015, Intel Corporation.
  4  */
  5 #include <linux/platform_device.h>
  6 #include <linux/init.h>
  7 #include <linux/ioport.h>
  8 
  9 static int found(u64 start, u64 end, void *data)
 10 {
 11         return 1;
 12 }
 13 
 14 static __init int register_e820_pmem(void)
 15 {
 16         struct platform_device *pdev;
 17         int rc;
 18 
 19         rc = walk_iomem_res_desc(IORES_DESC_PERSISTENT_MEMORY_LEGACY,
 20                                  IORESOURCE_MEM, 0, -1, NULL, found);
 21         if (rc <= 0)
 22                 return 0;
 23 
 24         /*
 25          * See drivers/nvdimm/e820.c for the implementation, this is
 26          * simply here to trigger the module to load on demand.
 27          */
 28         pdev = platform_device_alloc("e820_pmem", -1);
 29         return platform_device_add(pdev);
 30 }
 31 device_initcall(register_e820_pmem);
 32 

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