Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: BasicBlocker: ISA Redesign to Make Spectre-Immune CPUs Faster   Recent research has revealed an ever-growing class of microarchitectural
attacks that exploit speculative execution, a standard feature in modern
processors. Proposed and deployed countermeasures involve a variety of compiler
updates, firmware updates, and hardware updates. None of the deployed
countermeasures have convincing security arguments, and many of them have
already been broken.
  The obvious way to simplify the analysis of speculative-execution attacks is
to eliminate speculative execution. This is normally dismissed as being
unacceptably expensive, but the underlying cost analyses consider only software
written for current instruction-set architectures, so they do not rule out the
possibility of a new instruction-set architecture providing acceptable
performance without speculative execution. A new ISA requires compiler and
hardware updates, but these are happening in any case.
  This paper introduces BasicBlocker, a generic ISA modification that works for
all common ISAs and that allows non-speculative CPUs to obtain most of the
performance benefit that would have been provided by speculative execution. To
demonstrate the feasibility of BasicBlocker, this paper defines a variant of
the RISC-V ISA called BBRISC-V and provides a thorough evaluation on both a
5-stage in-order soft core and a superscalar out-of-order processor using an
associated compiler and a variety of benchmark programs.

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The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
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The categories of this paper are: stat
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc