These changes are the raw update to linux-4.4.6-rt14. Kernel sources
[kvmfornfv.git] / kernel / arch / x86 / kernel / pmem.c
1 /*
2  * Copyright (c) 2015, Christoph Hellwig.
3  * Copyright (c) 2015, Intel Corporation.
4  */
5 #include <linux/platform_device.h>
6 #include <linux/module.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         char *pmem = "Persistent Memory (legacy)";
17         struct platform_device *pdev;
18         int rc;
19
20         rc = walk_iomem_res(pmem, 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);