swh:1:snp:2ca5d6eff8f04a671c0d5b13646cede522c64b7d
Revision ca71ba4d0cfcf5f7a8e9b24339547b5a72299f80 authored by John Baldwin on 26 January 2010, 20:58:09 UTC, committed by John Baldwin on 26 January 2010, 20:58:09 UTC
Optimize the cache flushing done when changing caching attributes of pages by doing nothing for CPUs that support self-snooping and using CLFLUSH instead of a full cache invalidate when possible. - On i386 take care of possible mappings of the page by sf buffer by utilizing the mapping for clflush, otherwise map the page transiently. Amd64 uses the direct map. - Do not use CLFLUSH on Intel CPUs due to problems with flushing the local APIC range by default. This can be further controlled via the hw.clflush_disable loader tunable. A setting of 1 disables the use of CLFLUSH. A setting of 0 allows CLFLUSH to be used for Intel CPUs when CPUID_SS is not present. Approved by: re (kib)
1 parent a6a19cb
Tip revision: 69f28986ad97c1e3d55279d696d1884c963f530e authored by Ken Thompson on 30 June 1970, 10:00:00 UTC
Research PDP7 development
Research PDP7 development
Tip revision: 69f2898
File | Mode | Size |
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bin | ||
cddl | ||
contrib | ||
crypto | ||
etc | ||
games | ||
gnu | ||
include | ||
kerberos5 | ||
lib | ||
libexec | ||
release | ||
rescue | ||
sbin | ||
secure | ||
share | ||
sys | ||
tools | ||
usr.bin | ||
usr.sbin | ||
ALU-USA-statement.pdf | -rw-r--r-- | 38.0 KB |
COPYRIGHT | -rw-r--r-- | 6.0 KB |
Caldera-license.pdf | -rw-r--r-- | 12.0 KB |
LICENSE | -rw-r--r-- | 14.8 KB |
LOCKS | -rw-r--r-- | 354 bytes |
MAINTAINERS | -rw-r--r-- | 6.7 KB |
Makefile | -rw-r--r-- | 11.7 KB |
Makefile.inc1 | -rw-r--r-- | 38.2 KB |
ObsoleteFiles.inc | -rw-r--r-- | 190.4 KB |
README | -rw-r--r-- | 3.0 KB |
README.md | -rw-r--r-- | 16.2 KB |
UPDATING | -rw-r--r-- | 43.4 KB |
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