From 37151260fed8a8fcd547e40fa55c34809a3cdf37 Mon Sep 17 00:00:00 2001 From: Joanna Rutkowska <joanna@invisiblethingslab.com> Date: Fri, 9 Apr 2010 08:57:06 +0000 Subject: [PATCH] UserFaq changed --- UserFaq.md | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 UserFaq.md diff --git a/UserFaq.md b/UserFaq.md new file mode 100644 index 00000000..720c2296 --- /dev/null +++ b/UserFaq.md @@ -0,0 +1,14 @@ +--- +layout: wiki +title: UserFaq +permalink: /wiki/UserFaq/ +--- + +Qubes User's FAQ +================ + +### Q: Can I install Qubes on a system without VT-d? + +Yes you can. You can even run a netvm but, of course, you will not benefit from DMA protection for driver domains. So, on a system without VT-d, everything should work the same, but there is no real security benefit of having a separate netvm, as the attacker can always use a simple DMA attack to go from netvm to Dom0. + +The above is in theory -- in practice, if you have a broken network card driver and try to run it in a netvm on a system without VT-d, it might crash your system. This might happen e.g. if the driver is not properly using DMA-API.