“Hypervisor CPUID Interface Proposal”. LKML Archive on lore.kernel.org (2008年10月1日). 2019年3月15日時点のオリジナルよりアーカイブ。2023年8月12日閲覧。 “Bit 31 of ECX of CPUID leaf 0x1. This bit has been reserved by Intel & AMD for use by hypervisors and indicates the presence of a hypervisor. Virtual CPU's (hypervisors) set this bit to 1 and physical CPU's (all existing and future CPU's) set this bit to zero. This bit can be probed by the guest software to detect whether they are running inside a virtual machine.”
“Mechanisms to determine if software is running in a VMware virtual machine”. VMware Knowledge Base. VMWare (2015年5月1日). 2023年8月12日閲覧。 “Intel and AMD CPUs have reserved bit 31 of ECX of CPUID leaf 0x1 as the hypervisor present bit. This bit allows hypervisors to indicate their presence to the guest operating system. Hypervisors set this bit and physical CPUs (all existing and future CPUs) set this bit to zero. Guest operating systems can test bit 31 to detect if they are running inside a virtual machine.”
“Hypervisor CPUID Interface Proposal”. LKML Archive on lore.kernel.org (2008年10月1日). 2019年3月15日時点のオリジナルよりアーカイブ。2023年8月12日閲覧。 “Bit 31 of ECX of CPUID leaf 0x1. This bit has been reserved by Intel & AMD for use by hypervisors and indicates the presence of a hypervisor. Virtual CPU's (hypervisors) set this bit to 1 and physical CPU's (all existing and future CPU's) set this bit to zero. This bit can be probed by the guest software to detect whether they are running inside a virtual machine.”
