Back المحاكاة الافتراضية إكس86 Arabic Virtualització x86 Catalan X86-Virtualisierung German Virtualización x86 Spanish Virtualizzazione x86 Italian X86仮想化 Japanese X86 가상화 Korean Virtualização x86 Portuguese Апаратна віртуалізація x86 Ukrainian X86虚拟化 Chinese
x86 virtualization is the use of hardware-assisted virtualization capabilities on an x86/x86-64 CPU.
In the late 1990s x86 virtualization was achieved by complex software techniques, necessary to compensate for the processor's lack of hardware-assisted virtualization capabilities while attaining reasonable performance. In 2005 and 2006, both Intel (VT-x) and AMD (AMD-V) introduced limited hardware virtualization support that allowed simpler virtualization software but offered very few speed benefits.[1] Greater hardware support, which allowed substantial speed improvements, came with later processor models.
- ^ A Comparison of Software and Hardware Techniques for x86 Virtualization, Keith Adams and Ole Agesen, VMware, ASPLOS’06 October 21–25, 2006, San Jose, California, USA Archived 2010-08-20 at the Wayback Machine"Surprisingly, we find that the first-generation hardware support rarely offers performance advantages over existing software techniques. We ascribe this situation to high VMM/guest transition costs and a rigid programming model that leaves little room for software flexibility in managing either the frequency or cost of these transitions.