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Differential D38155

linuxkpi: Add `kmap_local_page_prot()` and `kunmap_local()`
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Authored by dumbbell on Jan 22 2023, 2:10 PM.
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emaste
imp
linuxkpi

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manu
Commits
rGa6ffaf995b44: linuxkpi: Add `kmap_local_page_prot()` and `kunmap_local()`
rG9dafbd0c69a6: linuxkpi: Add `kmap_local_page_prot()` and `kunmap_local()`
Summary

They are synonymous to kmap_atomic_prot() and kunmap_atomic() respectively.

This is part of the update of the DRM drivers to Linux 5.14.

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rG FreeBSD src repository
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Event Timeline

dumbbell created this revision.Jan 22 2023, 2:10 PM
Herald added subscribers: linuxkpi, emaste, imp. · View Herald TranscriptJan 22 2023, 2:10 PM
dumbbell requested review of this revision.Jan 22 2023, 2:10 PM
manu added a comment.Jan 23 2023, 7:45 AM

What's the difference in Linux ?

sys/compat/linuxkpi/common/include/linux/highmem.h
98

style(9) need new line.

130

style(9) need new line.

dumbbell added a comment.Jan 27 2023, 9:48 PM
In D38155#866973, @manu wrote:

What's the difference in Linux ?

The *_atomic variant turn off preemption and page faults between the map and the unmap, something the *_local variant doesn't do.

dumbbell updated this revision to Diff 115955.Jan 27 2023, 9:49 PM

Fix style(9) issues.

dumbbell marked 2 inline comments as done.Jan 27 2023, 9:49 PM
dumbbell mentioned this in D38156: linuxkpi: Add `io_mapping_map_local_wc()` and `io_mapping_unmap_local()`.
manu accepted this revision.Jan 28 2023, 8:32 AM
This revision is now accepted and ready to land.Jan 28 2023, 8:32 AM
Closed by commit rG9dafbd0c69a6: linuxkpi: Add `kmap_local_page_prot()` and `kunmap_local()` (authored by dumbbell). · Explain WhyJan 30 2023, 10:19 PM
This revision was automatically updated to reflect the committed changes.
dumbbell added a commit: rG9dafbd0c69a6: linuxkpi: Add `kmap_local_page_prot()` and `kunmap_local()`.
dumbbell added a commit: rGa6ffaf995b44: linuxkpi: Add `kmap_local_page_prot()` and `kunmap_local()`.Feb 16 2023, 12:02 PM

Revision Contents
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sys/
compat/
linuxkpi/
common/
include/
linux/
17 lines

Diff 116079

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sys/compat/linuxkpi/common/include/linux/highmem.h

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