mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 10:15:13 +07:00
a3619190d6
Now that the mm core supports section-unaligned hotplug of ZONE_DEVICE memory, we no longer need to add padding at pfn/dax device creation time. The kernel will still honor padding established by older kernels. Link: http://lkml.kernel.org/r/156092356588.979959.6793371748950931916.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reported-by: Jeff Moyer <jmoyer@redhat.com> Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> [ppc64] Cc: David Hildenbrand <david@redhat.com> Cc: Jane Chu <jane.chu@oracle.com> Cc: Jérôme Glisse <jglisse@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Logan Gunthorpe <logang@deltatee.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Toshi Kani <toshi.kani@hpe.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wei Yang <richardw.yang@linux.intel.com> Cc: Jason Gunthorpe <jgg@mellanox.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
37 lines
833 B
C
37 lines
833 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (c) 2014-2015, Intel Corporation.
|
|
*/
|
|
|
|
#ifndef __NVDIMM_PFN_H
|
|
#define __NVDIMM_PFN_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/mmzone.h>
|
|
|
|
#define PFN_SIG_LEN 16
|
|
#define PFN_SIG "NVDIMM_PFN_INFO\0"
|
|
#define DAX_SIG "NVDIMM_DAX_INFO\0"
|
|
|
|
struct nd_pfn_sb {
|
|
u8 signature[PFN_SIG_LEN];
|
|
u8 uuid[16];
|
|
u8 parent_uuid[16];
|
|
__le32 flags;
|
|
__le16 version_major;
|
|
__le16 version_minor;
|
|
__le64 dataoff; /* relative to namespace_base + start_pad */
|
|
__le64 npfns;
|
|
__le32 mode;
|
|
/* minor-version-1 additions for section alignment */
|
|
__le32 start_pad;
|
|
__le32 end_trunc;
|
|
/* minor-version-2 record the base alignment of the mapping */
|
|
__le32 align;
|
|
/* minor-version-3 guarantee the padding and flags are zero */
|
|
u8 padding[4000];
|
|
__le64 checksum;
|
|
};
|
|
|
|
#endif /* __NVDIMM_PFN_H */
|