第6期末セミナー2006-1rev1.ppt

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1 Intel VT vs AMD AMD-V

2 ( CPU) 2

3 3 IA-32 Intel VT-x AMD Virtualization(AMD-V) IA-64 Intel VT-i UltraSPARC UltraSPARCArchitecture2005(UltraSPARC T1) POWER Logical Partitioning (LPAR) ARM TrustZone

4 x86 4

5 Intel VT Intel Virtualization Technology "Vanderpool Technology IA-32 VT-x IA-64 VT-i I/O VT-d Virtualization Technology for Directed I/O 5

6 Intel VT-x VMX virtual-machine control structure(vmcs) 10 (VMX Instruction Set) VMX 5 VMCS 5 CR4 MSR(Model Specific Register: ) 6

7 VMX 0 VMX 2 VMX root VMM VMX non-root VMX transitions 7

8 VMX transitions VMX transitions 2 VM entries VMX root VMX non-root VM exits VMX non-root VMX root 8

9 VMX root VMX VMX 9

10 VMX non-root VM exits VM exits VMX root VMM VMM VMCS VM exits VMM VMX non-root 10

11 VMX non-root Ring Aliasing( ) Xen OS VMM 11

12 VMXON VM Entries VM Exits VM Entries VMXOFF VM Exits 12

13 VMCS VMX non-root VMX tansitions VMM VMCS region 4KB 6 Guest-state Host-state VM-execution VM-exit VM-entry VM-exit 13

14 VMCS Guest-state VM exits VMX non-root VM entry Host-state VM exits 14

15 VMCS VM-execution VMX non-root VM-exit VM exits VM-entry VM entries VM-exit VM exits 15

16 10 VMCS VMPTRLD VMCS VMPTRST VMCS VMCLEAR VMCS VMREAD VMCS VMWRITE VMCS 16

17 10 VMX VMCALL VMX non-root VMM VM exits VMM VMLAUNCH VMRESUME 17 VMXOFF VMX VMXON VMX

18 Xen+VT 18

19 Xen+VT VM Entries VM Exits VMCS2 VMCS1 19

20 AMD-V AMD Virtualization AMD SVM(Security and Virtual Machine architecture) Pacifica I/O AMD IOMMU(AMD I/O Virtualization Technology) 20

21 AMD-V ( ) 2 (Virtualization Support) (Security Support) Guest Virtual Machine Control Block(VMCB) 9 SVM instruction set)

22 AMD-V ( ) LocalAPIC DMA VMM TLB tagged TLB Nested Paging Intel EPT Extended Page Tables 22

23 Guest VT-x VMX non-root operation SVM Guest Mode VMEXIT VMCB VMRUN 23

24 Guest ( ) VMM VMCB VMEXIT VMM VMEXIT VMCB VMM 24

25 VMCB VT-x VMCS Virtual-Machine Control data Structure VMCB 4KB 4KB VMCB Control Area 2 State Save Area 25

26 Control Area VMEXIT VMEXIT 26

27 State Save Area State Save Area 27

28 SVM instruction set VMRUN Guest Mode VMSAVE VMCB VMLOAD VMCB VMMCALL VMM STGI 28

29 SVM instruction set CLGI INVLPGA ASID TLB MOV (CRn) CR8 SKINIT Security Kernel 29

30 VT-x AMD-V The architectures are from 10,000 ft. view they are very similar Each has their own advantages/disadvantages IBM Leendertvan Doorn Xen 10,000 30

31 VMX Guest VMCS VMCB 31

32 32

33 Xen Hardware Virtual Machine Abstraction Layer HVM HVM 33

34 VT-x VMCS VMM SVM VMCB SVM 4KB VMRUN 34

35 35

36 STGI CLGI VT-x INVLPGA SVM TLB MOV(CRn) SKINIT TPM 36

37 AMD-V TLB tagged TLB (PTE) TLB TLB Translation Lookaside Buffer PTE AMD-V ASID(Address Space IDentifier) ASID TLB 37

38 TLB tagged TLB VMCB ASID OS TLB ASID TLB TLB TLB 38

39 I/O VT-d AMD IOMMU ML 39

40 OS VMware VMtools OS (Windows ) 40

41 I/O I/O VMM PCI-Express PCI-Express IOV 41

42 AMD SVM Windows Linux 42

71-78.indd

71-78.indd 6 AMD processor feature optimized to support virtualization machines (AMD) VMware Xen x86 AMD 2006 Rev. F F CPUSempron CPU AMD Virtualization AMD-V 9 Barcelona 3 Rapid Virtualization IndexingRVI Nested