Does #Meltdown bypass segment limit? To be specific, is e.g. Linux 2.0 on 32-bit x86 vulnerable? If not, maybe consider http://wiki.osdev.org/X86-64#Segmentation_in_Long_Mode …
-
-
and differences in what you can do with segments. and if you're not using a long mode segment you can't use long mode operations -> you can't have pointers that point anywhere above 2^32.
-
but the point of x32 is that you do have 64-bit mode, so that you can use R8-R15 and other features of 64-bit mode. x32 uses 32-bit pointers in its calling convention, but it's not architecturally compatibility mode
- 7 more replies
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.