get rid of kernelbase

handle variable kernel vm min address

Replace KERN_BASE by VM_MIN_KERNEL_ADDRESS. Also add XXX on INKERNEL.

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of im

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of improvements from upstream,
this version also has these NetBSD-specific enhancements:
- dtrace FBT probes can now be placed in kernel modules.
- ZFS now supports mmap().

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apply changes equivalent to freebsd r256822, r267759 and r298171:
fix the dtrace "args" variable to return correct values.
simplify the invop handlers a bit by changing the second argument
from a poi

apply changes equivalent to freebsd r256822, r267759 and r298171:
fix the dtrace "args" variable to return correct values.
simplify the invop handlers a bit by changing the second argument
from a pointer into the stack to a pointer to the trapframe.

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apply the ustack() parts of freebsd r211608:

r211608 | rpaulo | 2010-08-22 03:53:32 -0700 (Sun, 22 Aug 2010) | 8 lines

Kernel DTrace support for:
o uregs (sson@)
o ustack (sson@)
o /dev/dtrac

apply the ustack() parts of freebsd r211608:

r211608 | rpaulo | 2010-08-22 03:53:32 -0700 (Sun, 22 Aug 2010) | 8 lines

Kernel DTrace support for:
o uregs (sson@)
o ustack (sson@)
o /dev/dtrace/helper device (needed for USDT probes)

The work done by me was:
Sponsored by: The FreeBSD Foundation

plus a few netbsd-specific tweaks from me.
fixes PR 50790.

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make dtrace work on amd64.

make dtrace compile on amd64.

Apply NetBSD changes to DTrace.

Ok with core@.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.