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kvm-intel does not load when Intel TXT is enabled

DISCUSSION Andrej Podzimek 2 participants 2 messages May 14, 2010 – May 16, 2010 KVM

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Hello,

when I enable Intel TXT (Trusted Execution Technology) in the BIOS settings of my Lenovo W510, the kvm-intel module does not load and says 'kvm: disabled by bios', despite the fact that both VT-x and VT-d are enabled. Disabling TXT enables hardware virtualization and kvm-intel works as expected.

Are VT-[xd] and TXT supposed to be mutually exclusive? Or could it be a BIOS bug?

Andrej

#1 lore raw
Quoted 6 lines · Andrej Podzimek

Hello,

when I enable Intel TXT (Trusted Execution Technology) in the BIOS settings of my Lenovo W510, the kvm-intel module does not load and says 'kvm: disabled by bios', despite the fact that both VT-x and VT-d are enabled. Disabling TXT enables hardware virtualization and kvm-intel works as expected.

Are VT-[xd] and TXT supposed to be mutually exclusive? Or could it be a BIOS bug?

Running kvm under txt needs special support in the kernel; it will be available in 2.6.35.

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