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| author |   Christoph Hellwig <hch@lst.de> | 2020-03-16 20:32:15 +0100 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2020-03-26 14:33:38 -0300 |
| commit | 17ffdc482982af92bddb59692af1c5e1de23d184 (patch) | |
| tree | ccabdb1691c720b734896ca6eded31457b353881 /include/linux/hmm.h | |
| parent | mm: handle multiple owners of device private pages in migrate_vma (diff) | |
| download | linux-dev-17ffdc482982af92bddb59692af1c5e1de23d184.tar.xz linux-dev-17ffdc482982af92bddb59692af1c5e1de23d184.zip | |
mm: simplify device private page handling in hmm_range_fault
Remove the HMM_PFN_DEVICE_PRIVATE flag, no driver has ever set this flag
on input, and the only place that uses it on output can be trivially
changed to use is_device_private_page().
This removes the ability to request that device_private pages are faulted
back into system memory.
Link: https://lore.kernel.org/r/20200316193216.920734-4-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/linux/hmm.h')
| -rw-r--r-- | include/linux/hmm.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/hmm.h b/include/linux/hmm.h index 4bf8d6997b12..5e6034f105c3 100644 --- a/include/linux/hmm.h +++ b/include/linux/hmm.h @@ -74,7 +74,6 @@ * Flags: * HMM_PFN_VALID: pfn is valid. It has, at least, read permission. * HMM_PFN_WRITE: CPU page table has write permission set - * HMM_PFN_DEVICE_PRIVATE: private device memory (ZONE_DEVICE) * * The driver provides a flags array for mapping page protections to device * PTE bits. If the driver valid bit for an entry is bit 3, @@ -86,7 +85,6 @@ enum hmm_pfn_flag_e { HMM_PFN_VALID = 0, HMM_PFN_WRITE, - HMM_PFN_DEVICE_PRIVATE, HMM_PFN_FLAG_MAX }; |