<![CDATA[Dev1 Galaxy Forum / Can Bochs VM help to avoid spectre and meltdown types of attacks?]]> https://dev1galaxy.org/viewtopic.php?id=2652 Thu, 07 Feb 2019 16:52:43 +0000 FluxBB <![CDATA[Re: Can Bochs VM help to avoid spectre and meltdown types of attacks?]]> https://dev1galaxy.org/viewtopic.php?pid=14110#p14110 Does an ability of a guest to escape into the host address space depend on a type of virtualization?

For example slow full emulation like in Bochs (when original CPU instructions are converted to other instructions before execution) vs fast hardware virtualization (when CPU instructions are executed almost unchanged just in another context) if I understand correctly ?

What about a full emulation of even another architecture? Say fully emulating immune Cortex A53 virtual hardware on a X86 hardware which is not immune to spectre by itself?

Is it so easy to produce a code for a Cortex A53 virtual guest CPU which would be translated into vulnerable hardware X86 host instructions?

]]> Thu, 07 Feb 2019 16:52:43 +0000 https://dev1galaxy.org/viewtopic.php?pid=14110#p14110 <![CDATA[Can Bochs VM help to avoid spectre and meltdown types of attacks?]]> https://dev1galaxy.org/viewtopic.php?pid=14104#p14104 Can bochs full emulation prevent escaping from guest to host using spectre like vulnerabilities?

]]> Thu, 07 Feb 2019 11:10:57 +0000 https://dev1galaxy.org/viewtopic.php?pid=14104#p14104