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What are the "architecture differences" that make AMD CPUs immune to the 3rd variant (Rogue Data Cache Load, aka Meltdown)?
by ngrilly 9y ago
What are the "architecture differences" that make AMD CPUs immune to the 3rd variant (Rogue Data Cache Load, aka Meltdown)?
- ngrilly 9y agoI found this explanation in a Linux kernel commit: AMD processors are not subject to the types of attacks that the kernel page table isolation feature protects against. The AMD microarchitecture does not allow memory references, including speculative references, that access higher privileged data when running in a lesser privileged mode when that access would result in a page fault. Source: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=694d99d40972f12e59a3696effee8a376b79d7c8 https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/...