Re: [PATCH v4] KVM: x86: Implement PCID/INVPCID for guests with EPT

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On 06/28/2012 06:49 PM, Avi Kivity wrote:
> On 06/14/2012 05:04 AM, Mao, Junjie wrote:
>> This patch handles PCID/INVPCID for guests.
>> 
>> Process-context identifiers (PCIDs) are a facility by which a logical processor
>> may cache information for multiple linear-address spaces so that the processor
>> may retain cached information when software switches to a different linear
>> address space. Refer to section 4.10.1 in IA32 Intel Software Developer's Manual
>> Volume 3A for details.
>> 
>> For guests with EPT, the PCID feature is enabled and INVPCID behaves as running
>> natively.
>> For guests without EPT, the PCID feature is disabled and INVPCID triggers #UD.
>> 


Oh, and sorry about the late review.


-- 
error compiling committee.c: too many arguments to function


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