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kern/38663: Kernel preemption can't be enabled on x86 because of amd64 FPU handling
>Synopsis: Kernel preemption can't be enabled on x86 because of amd64 FPU
>Arrival-Date: Thu May 15 07:45:00 +0000 2008
>Originator: Andrew Doran
The NetBSD Project
Kernel preemption works well on i386 but cannot be enabled by default
because the amd64 port lacks the needed changes to the lazy FPU context
Code inspection, testing.
Implement the needed changes for amd64 FPU code.
I have a diff that does the needful, but it causes occasional hangs on
the systems that I have tried it on.
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