diff options
| author | dougb <dougb@FreeBSD.org> | 2000-10-27 10:57:33 +0000 |
|---|---|---|
| committer | dougb <dougb@FreeBSD.org> | 2000-10-27 10:57:33 +0000 |
| commit | 1b7ba5be364a2f76b050e9b5866f4e856d327f69 (patch) | |
| tree | 361bc12f1205a771e0ccf2e741984579884dd634 /sys | |
| parent | 82332e4bd5c07c0f75d5c47306fe9aaa8d746029 (diff) | |
| download | FreeBSD-src-1b7ba5be364a2f76b050e9b5866f4e856d327f69.zip FreeBSD-src-1b7ba5be364a2f76b050e9b5866f4e856d327f69.tar.gz | |
Expand on the reasons for and against defining NO_F00F_HACK. This is one of
those options that is frequently misunderstood, and ends up on -questions.
PR: 21852
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/conf/NOTES | 4 | ||||
| -rw-r--r-- | sys/i386/conf/NOTES | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES index 3a992c2..745c60d 100644 --- a/sys/conf/NOTES +++ b/sys/conf/NOTES @@ -225,8 +225,8 @@ cpu I686_CPU # aka Pentium Pro(tm) # # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is -# executed. This should be included for ALL kernels that won't run -# on a Pentium. +# executed. This option is only needed if I586_CPU is also defined, +# and should be included for any non-Pentium CPU that defines it. # # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors # which indicates that the 15-16MB range is *definitely* not being diff --git a/sys/i386/conf/NOTES b/sys/i386/conf/NOTES index 3a992c2..745c60d 100644 --- a/sys/i386/conf/NOTES +++ b/sys/i386/conf/NOTES @@ -225,8 +225,8 @@ cpu I686_CPU # aka Pentium Pro(tm) # # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is -# executed. This should be included for ALL kernels that won't run -# on a Pentium. +# executed. This option is only needed if I586_CPU is also defined, +# and should be included for any non-Pentium CPU that defines it. # # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors # which indicates that the 15-16MB range is *definitely* not being |
