如何判斷自己的cpu在vmware下是否支援64位的作業系統

當初第一次做rac安裝測試的時候，找了一個免費版本的vmware server 1.0.3，因為公司的伺服器都是64位的，而且也都是安裝64位的os和oracle，所以就想當然的去建立一個64位的作業系統，結果發現不行，說我的cpu不支援64位的虛擬系統。開始以為是免費的vmware的限制，也沒多想，就直接下載32位的oracle和cluster開始安裝。今天才發現了一個官方的解釋，記錄一下。[@more@]

vmware上的官方連結上介紹了支援64位虛擬系統需要的cpu的情況，並且提供了一個檢測的工具，名稱叫：VMware-guest64check，上面的連結中直接說明了可以在哪裡下載這個檢測工具。下面來看看這個工具的執行情況。

首先之前說不支援64位虛擬系統的那個機器上執行，結果如下：
[root@localhost u01]# ./VMware-guest64check-6.0.0-45731
This host is NOT capable of running a 64-bit guest operating system under this VMware product.
For more detailed information, see

[root@localhost u01]# uname -a
Linux localhost.localdomain 2.6.9-42.ELsmp #1 SMP Wed Jul 12 23:32:02 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux
同時可以看到，這個機器上的OS是64位的。

換另一個機器，結果如下：
[root@billdb3 u01]# ./VMware-guest64check-6.0.0-45731
This host is capable of running a 64-bit guest operating system under this VMware product.
這兩個機器執行的作業系統是相同的，64位的REDHAT AS4U4。

方便查詢期間，直接把vmware的內容記錄下來吧：
Hardware and Firmware Requirements for 64-Bit Guest Operating Systems
Products

VMware ACE
VMware Fusion
VMware Player
VMware Server
VMware Workstation

Details
I want to use Workstation or VMware Server to run virtual machines with 64-bit guest operating systems. What are the hardware and firmware requirements for the host machine?

Solution

VMware's virtual machine monitor has traditionally used segmentation to provide isolation between the guest operating system and the virtual machine monitor. This is necessary because the guest operating system and virtual machine monitor share the linear address space.

AMD

Segmentation support is missing from the initial AMD64 processors (that is, revision C and earlier) while running in long mode. As a result, AMD64 processors prior to revision D do not have an efficient mechanism for isolating the virtual machine monitor from 64-bit guest operating systems.
A limited form of segmentation was reintroduced in long mode, in revision D AMD64 processors. As a result, AMD64 processors must be revision D or later to run 64-bit guest operating systems.

Note: Because AMD Opteron and Turion processors do not ship in revision D, AMD Opteron and Turion 64 processors must be revision E or later to run 64-bit guest operating systems.

Intel

Intel CPUs require EM64T and VT support in the chip and in the BIOS.

Intel EM64T CPUs do not have segmentation support in long mode. If the Intel EM64T CPU is VT-capable, it comes with hardware virtualization support (Intel's Virtualization Technology). This hardware virtualization support allows Workstation and VMware Server to work around the lack of segmentation, making it possible to run 64-bit guest operating systems on Intel EM64T VT-capable CPUs.

Notes:
(1) Firmware/BIOS support is required to enable Intel Virtualization Technology. Some systems (particularly laptops) do not have the necessary firmware/BIOS support to enable Intel Virtualization Technology, and cannot run 64-bit guest operating systems.
(2) In multi-processor systems, all processors must support compatible VT implementations. At a minimum, all processors must implement the same VMCS revision ID. In multi-processor systems with mixed processor steppings, 64-bit guest operating systems may not be supported.

32-Bit CPUs

Please note that Workstation and VMware Server require a 64-bit CPU to run a 64-bit guest operating system. While it is theoretically possible to emulate a 64-bit instruction set on 32-bit hardware, doing so most likely results in unacceptable performance degradation.
VMware distributes a free utility that can be used to determine whether or not your CPU is suitable for running 64-bit guest operating systems. You can download this utility from the VMware Web site at (scroll down to Processor Check for 64-Bit Compatibility). VMware Server includes this utility in its product distribution, so you don't need to download an additional tool.

Workstation 5.5 and VMware Server 1.0 support virtual machines with 64-bit guest operating systems only on host machines that have one of the supported 64-bit processors:

AMD Athlon 64, revision D or later
AMD Opteron, revision E or later
AMD Turion 64, revision E or later
AMD Sempron, 64-bit-capable revision D or later (experimental support)
Intel EM64T VT-enabled processors (experimental support)
Note: In shopping for a processor that is compatible with Workstation 5.5 or VMware Server 1.0 64-bit guests, you may be unable to determine the revision numbers of a given vendor's offering of AMD Athlon 64, Opteron, Turion 64, or Sempron processors. At this time, the only reliable way to determine whether or not any of these processors is a revision supported by VMware software is by noting the manufacturing technology (CMOS). Any of the AMD Athlon 64, Opteron, Turion 64, or Sempron processors whose manufacturing technology is 90nm SOI (.09 micron SOI) is compatible with Workstation 5.5 or VMware Server 1.0 64-bit guests. Using this information, you should be able to determine — with the help of your vendor, or from the AMD Web site () — whether a particular Athlon 64 or Opteron processor model is compatible with Workstation 5.5 or VMware Server 1.0 64-bit guests.

Product Versions



VMware Player 1.0.x (Linux Hosts)

VMware Player 1.0.x (Windows Hosts)

VMware Server 1.0.x (Linux Hosts)

VMware Server 1.0.x (Windows Hosts)

VMware Workstation 5.5.x (Linux hosts)

VMware Workstation 5.5.x (Windows hosts)


Keywords



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