:> and preferably on more than the i386 platform. If we are going to
:> be serious about supporting more hardware platforms, then we have
:> to start treating them more seriously when major changes like this
:> come along. If we can't get some broader testing of this done in
:> the next few weeks, then the changes should probably wait until
:> after "5.0".
:
:
:I believe that I read in an earlier thread that the archetecture-specific changes are
:minimal, and that majority of the changes are
:in high-level constructs in the kernel. Of course, I could be recalling this
:incorrectly, but I don't think I am...
:
:jim
Yes, this is correct. The assembly changes are just structural
indirections for things that were broken off from the proc structure.
The scheduler now messes with 'threads' rather then 'processes' for
the most part. That part of the diff set is involved but straight
forward. Julian also add KSTACK_PAGES to allow the kernel stack to
be specified in a more controlled manner.
Here is an excerpt so you can see what I mean:
...
-
- movl P_VMSPACE(%ecx), %edx
+ movl TD_PROC(%ecx), %eax
+ movl P_VMSPACE(%eax), %edx
movl PCPU(CPUID), %eax
btrl %eax, VM_PMAP+PM_ACTIVE(%edx)
- movl P_ADDR(%ecx),%edx
+ movl TD_PCB(%ecx),%edx
...
See? not much too it.
-Matt
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