> I am attempting to upgrade my snv97 install to the
> snv99 release.
...
> On next boot the system hangs just after the
> copyright banner. I have enabled debug mode
> (appending -kv to the line in grub) and the boot
> process hangs at "Start to prepare identity map for
> rmrr"
>
> Here is the text from the debug boot that hadn't
> scrolled off the screen too quickly (Hopefully
> accurately transcribed from a photo!):
>
> -------------------
...
> Start to check dmar related boot options
> Start to create iommu state structures
> dmar0,0 state structure created
> dmar0,1 state structure created
> dmar0,2 state structure created
> Start to collect the reserved memory
> Start to prepare identity map for rmrr
Hmm, that appears to be printed by the new intel iommu code,
which was added to snv_99:
6714111 Solaris needs to support the Intel IOMMU
http://bugs.opensolaris.org/view_bug.do?bug_id=6714111
Looking at the new code, apparently you can disable use of the
iommu by starting the kernel with option "-B intel-iommu=no".
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