From: bugzilla-daemon@libre-soc.org
To: libre-riscv-dev@lists.libre-riscv.org
Subject: [libre-riscv-dev] [Bug 209] spectre-proof speculative execution
Date: Mon, 18 May 2020 19:59:21 +0000
Message-ID: <bug-209-13-OC5OHDXMCA@https.bugs.libre-soc.org/> (raw)
In-Reply-To: <bug-209-13@https.bugs.libre-soc.org/>
https://bugs.libre-soc.org/show_bug.cgi?id=209
--- Comment #5 from Luke Kenneth Casson Leighton <lkcl@lkcl.net> ---
On Mon, May 18, 2020 at 8:25 PM Yehowshua <yimmanuel3@gatech.edu> wrote:
> > so basically this extends the Dependency Matrix "Shadow" concept actually
> > right down into the Caches.
>
> Exactly - keep in mind that this is only for variant 1.
there may still be some impact. reduction in TLB entry availability
may cause timing alterations.
the L0 Cache/Buffer *might* actually be the accidentally-already-designed
place where speculation stops. i stress "might".
> I’ll read up on the other variants later.
>
> Why do CPUs have to be so complicated...
:)
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Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-209-13@https.bugs.libre-soc.org/>
2020-05-18 19:06 ` bugzilla-daemon
2020-05-18 19:24 ` bugzilla-daemon
2020-05-18 19:25 ` Yehowshua
2020-05-18 19:38 ` Luke Kenneth Casson Leighton
2020-05-18 19:59 ` bugzilla-daemon [this message]
2020-05-18 20:51 ` bugzilla-daemon
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