[vbox-dev] is local apic supported in virtualbox

[Frank Mehnert]

Hi,

On Friday 20 September 2013 20:08:17 ocean wrote:
> after make several branch trace store(intel's BTS)  related msr can be
> accessed in guest, I can successfuly start branch trace store. But I find
> APIC feature is not supported by cpuid,  my cpu is I3, I am sure it
> supports apic feature. So I pretend this feature is on, and connect local
> vector table performance counter to an idt entry, but my interrupt service
> routine never called. I want to know is local apic  not supported in
> virtualbox or I make some mistake in my programs. can someone help me?

of course VirtualBox emulates the local APIC. But VirtualBox does NOT
emulate certain debugging features of modern x86 CPUs like branch target
store or performance counters.

Kind regards,

Frank
-- 
Dr.-Ing. Frank Mehnert | Software Development Director, VirtualBox
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