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[$] Addressing Meltdown and Spectre in the kernel

Saturday January 6, 2018. 12:36 AM , from
When the Meltdown and Spectre vulnerabilities were disclosed on
January 3, attention quickly turned to mitigations. There was already
a clear defense against Meltdown in the form of kernel page-table isolation (KPTI), but the
against the two Spectre variants had not been developed in public and still
do not exist in the mainline kernel. Initial versions of proposed
defenses have now been disclosed. The resulting picture shows what has
been done to fend off Spectre-based attacks in the near future, but the
situation remains chaotic, to put it lightly.

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