Thanks for the quick response. It is greatly appreciated. Can you please point me in the right direction on finding out why the EPTP (EPT_POINTER & mmu.root_hpa) have so many different values? Thanks again. ________________________________________ From: Anthony Liguori [anthony@xxxxxxxxxxxxx] Sent: Tuesday, December 07, 2010 4:57 PM To: Lok Kwong Yan Cc: kvm@xxxxxxxxxxxxxxx Subject: Re: Does KVM use one EPT table per Guest CR3? On 12/07/2010 03:47 PM, Lok Kwong Yan wrote: > After some testing and digging around the 2.6.32-26 Kernel, Ubuntu port, , it seems to me that KVM creates a separate EPT table for each separate guest CR3 value. So, if there are 100 guest processes, there are essentially 100 EPT tables. Is this correct? No, it's not correct. Regards, Anthony Liguori > If so, can someone please tell me where these tables are actually being created? Is this design decision a historical artifact from how QEMU/KVM (without EPT/NPT) created multiple shadow page tables so that each guest/virtual CR3 value has a corresponding real CR3 value so that memory based separation for the guest is enforced? > > Thanks!-- > 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 > -- 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
