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9497adf974
- Add hw.clflush_disable loader tunable to avoid panic (trap 9) at
map_invalidate_cache_range() even if CPU is not Intel.
- This tunable can be set to -1 (default), 0 and 1. -1 is same as
current behavior, which automatically disable CLFLUSH on Intel CPUs
without CPUID_SS (should be occured on Xen only). You can specify 1
when this panic happened on non-Intel CPUs (such as AMD's). Because
disabling CLFLUSH may reduce performance, you can try with setting 0
on Intel CPUs without SS to use CLFLUSH feature.
- Amd64 init_secondary() calls initializecpu() while curthread is
still not properly set up. r199067 added the call to
TUNABLE_INT_FETCH() to initializecpu() that results in hang because
AP are started when kernel environment is already dynamic and thus
needs to acquire mutex, that is too early in AP start sequence to
work.
Extract the code that should be executed only once, because it sets
up global variables, from initializecpu() to initializecpucache(),
and call the later only from hammer_time() executed on BSP. Now,
TUNABLE_INT_FETCH() is done only once at BSP at the early boot
stage.
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| acpica | ||
| amd64 | ||
| compile | ||
| conf | ||
| ia32 | ||
| include | ||
| isa | ||
| linux32 | ||
| pci | ||
| Makefile | ||