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authorjdolecek <jdolecek@NetBSD.org>2018-06-10 17:54:51 +0000
committerjdolecek <jdolecek@NetBSD.org>2018-06-10 17:54:51 +0000
commit1af62cb858afe3fea2c3f0edf9943ce6691372eb (patch)
treedd4c3362457a636dca5dd9d1d1ec1470fd653b52 /sys/modules/lua/lua.c
parent60e20a669f04f431a1625e9fb68ab81a0a1ae3ad (diff)
convert the (still disabled) 'direct write' for pipes to use the
experimental PMAP_DIRECT if available; the direct code paths now survive longer than the pmap_enter() variant, but still triggers panic during build.sh tools run; remove some obsolete sysctls add some XXXs to mark places which need attention to make this more stable Note: the loan case is now actually significantly slower than the non-loan case on MP systems, due to synchronous IPIs triggered by marking the page read-only by uvm_loan(); this is being discussed in the email thread https://mail-index.netbsd.org/tech-kern/2018/05/21/msg023441.html that is basically the same issue due to which loaning was disabled for sosend()
Diffstat (limited to 'sys/modules/lua/lua.c')
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