Monthly archive for 2018/1

QEMU and the Spectre and Meltdown attacks

04 Jan 2018 (Updated 05 Jan 2018) — by Paolo Bonzini and Eduardo Habkost

As you probably know by now, three critical architectural flaws in CPUs have been recently disclosed that allow user processes to read kernel or hypervisor memory through cache side-channel attacks. These flaws, collectively named Meltdown and Spectre, affect in one way or another almost all processors that perform out-of-order execution, including x86 (from Intel and AMD), POWER, s390 and ARM processors.

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