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author | alc <alc@FreeBSD.org> | 2004-03-07 21:06:48 +0000 |
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committer | alc <alc@FreeBSD.org> | 2004-03-07 21:06:48 +0000 |
commit | f13324f65bc2419a9196c4eca76e5e57c0d7fea5 (patch) | |
tree | 46fc651b1b10f7e2ee470193f457cfe495ed084a /UPDATING | |
parent | a545780c51218e55facb66312587197d0f2ce9af (diff) | |
download | FreeBSD-src-f13324f65bc2419a9196c4eca76e5e57c0d7fea5.zip FreeBSD-src-f13324f65bc2419a9196c4eca76e5e57c0d7fea5.tar.gz |
Retire pmap_pinit2(). Alpha was the last platform that used it. However,
ever since alpha/alpha/pmap.c revision 1.81 introduced the list allpmaps,
there has been no reason for having this function on Alpha. Briefly,
when pmap_growkernel() relied upon the list of all processes to find and
update the various pmaps to reflect a growth in the kernel's valid
address space, pmap_init2() served to avoid a race between pmap
initialization and pmap_growkernel(). Specifically, pmap_pinit2() was
responsible for initializing the kernel portions of the pmap and
pmap_pinit2() was called after the process structure contained a pointer
to the new pmap for use by pmap_growkernel(). Thus, an update to the
kernel's address space might be applied to the new pmap unnecessarily,
but an update would never be lost.
Diffstat (limited to 'UPDATING')
0 files changed, 0 insertions, 0 deletions