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Make the linuxkpi's alloc_pages() consistently return wired pages.

Description

Make the linuxkpi's alloc_pages() consistently return wired pages.

Previously it did this only on platforms without a direct map. This
also more closely matches Linux's semantics.

Since some DRM v5.0 code assumes the old behaviour, use a
LINUXKPI_VERSION guard to preserve that until the out-of-tree module
is updated.

Reviewed by: hselasky, kib (earlier versions), johalun
MFC after: 1 week
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D20502

Details

Committed
markjJun 6 2019, 4:09 PM
Reviewer
hselasky
Differential Revision
D20502: Allocate wired pages in linux_alloc_pages().
Parents
rS348742: Fix a race between fasttrap and the user breakpoint handler.
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