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Subject: [Bug 196093] bhyve error "wrmsr to register 0x1a0" with Ubuntu 13.10
Date: Fri, 24 Jul 2015 01:06:39 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196093

Conrad E. Meyer <cem@freebsd.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cem@freebsd.org

--- Comment #14 from Conrad E. Meyer <cem@freebsd.org> ---
Hey, I seem to be hitting this on a revision well after the fix: r283896.

The guest traps with:

...
kernel trap 9 with interrupts disabled
panic @ time 0.000, thread 0xffffffff813c2f20: Fatal trap 9: general protection
fault while in kernel mode
...
Registers:
rax: 0000000000811889 rbx: ffffffff814077b8 rcx: 00000000000001a0 rdx:
0000000000000000
                                                              ^^^
                                               MSR_MISC_ENABLE or
IA32_MISC_ENABLE

Are we missing some emulation? It looks like ECX is the MSR register, and
we're trying to write EDX:EAX (per [0]):

    00000000 00811889

Anything I can do to help fix this? Would you prefer a new bug? Thanks.

[0]: http://x86.renejeschke.de/html/file_module_x86_id_326.html

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