Re: [PATCH 6/6] KVM: x86: Emulator support for TF

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Avi Kivity wrote:
> On 02/23/2010 01:30 PM, Jan Kiszka wrote:
>>> How to detect that emulation is complete? emulate_instruction() should
>>> return EMULATE_DONE in this case.
>>>      
>> ...*and* RIP moved forward.
>>    
> 
> A branch or rep instruction can successfully execute and not change rip.
> 
> Btw, do we expect a #DB on every iteration of rep?  In this case we need 
> to modify the code, currently we'll batch rep;ins and rep;outs up to a 
> page's worth.

Right, TF triggers after each rep step. So we need to break this up when
tracing is on. That's now definitely something we need a deeper emulator
change.

Jan

-- 
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux