diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-08-18 11:05:57 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-08-20 09:41:35 -0300 |
| commit | 6869b7b206595ae0e326f59719090351eb8f4f5d (patch) | |
| tree | 6a2f476c8df01f8a915de72c47361f277aa7b6ad /include/linux/memremap.h | |
| parent | 6f42193fd86eb5eb518984032c85e9b5582b7625 (diff) | |
| download | lwn-6869b7b206595ae0e326f59719090351eb8f4f5d.tar.gz lwn-6869b7b206595ae0e326f59719090351eb8f4f5d.zip | |
memremap: provide a not device managed memremap_pages
The kvmppc ultravisor code wants a device private memory pool that is
system wide and not attached to a device. Instead of faking up one
provide a low-level memremap_pages for it.
Link: https://lore.kernel.org/r/20190818090557.17853-5-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Bharata B Rao <bharata@linux.ibm.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/linux/memremap.h')
| -rw-r--r-- | include/linux/memremap.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/memremap.h b/include/linux/memremap.h index 8f0013e18e14..fb2a0bd826b9 100644 --- a/include/linux/memremap.h +++ b/include/linux/memremap.h @@ -123,6 +123,8 @@ static inline struct vmem_altmap *pgmap_altmap(struct dev_pagemap *pgmap) } #ifdef CONFIG_ZONE_DEVICE +void *memremap_pages(struct dev_pagemap *pgmap, int nid); +void memunmap_pages(struct dev_pagemap *pgmap); void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap); void devm_memunmap_pages(struct device *dev, struct dev_pagemap *pgmap); struct dev_pagemap *get_dev_pagemap(unsigned long pfn, |