Issues with bhyve under KVM
Cory Smelosky
corys at ixsystems.com
Fri Oct 23 05:36:39 UTC 2015
On 2015-10-22 22:17, Peter Grehan wrote:
> Hi Cory,
>
>>> bhyve expects that the CPU supports INS/OUTS exits. This is
>>> signalled
>>> in bit 54 of the VMX_BASIC MSR. I'll have a talk with Neel about the
>>> implications of ignoring this bit.
>>
>> Hmm. Does Linux KVM ignore it?
>
> It must do (as did bhyve for a long time).
Ahhhh.
>
>> (does -host not emulate all MSRs?)
>
> Probably just not that bit. You might want to try the this patch
> which comments out that test, and see if it gets you any further.
> https://people.freebsd.org/~grehan/patches/vmx_ins.diff
--- all_subdir_vmm ---
/usr/src/sys/modules/vmm/../../amd64/vmm/intel/vmx.c:535:11: error:
unused variable 'basic' [-Werror,-Wunused-variable]
uint64_t basic, fixed0, fixed1, feature_control;
^
1 error generated.
Aww. I need to actually run a later SVN release instead of 286666.
Tried to save some time. ;)
>
> later,
>
> Peter.
--
--
Cory Smelosky
iXsystems
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