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Date: Tue, 4 Oct 2016 07:05:12 +0000
From: "Reshetova, Elena" <elena.reshetova@...el.com>
To: Kees Cook <keescook@...omium.org>, David Windsor <dwindsor@...il.com>,
"Hansen, Dave" <dave.hansen@...el.com>
CC: "kernel-hardening@...ts.openwall.com"
<kernel-hardening@...ts.openwall.com>, Hans Liljestrand <ishkamiel@...il.com>
Subject: RE: [RFC PATCH 01/13] Add architecture independent hardened atomic
base
>Yeah, actually, the performance impact should be mentioned. I'd be good to actually try to measure this, just to have looked at a specific workload.
So, what is the correct way to make measurements? What workloads should we test against?
>This could also be the basis for Dave Hanson's suggestion to use
>cmpchxg: would the expense of that instead of locked addl get noticed, etc?
Do you mean cmpxchg? Dave, I could not find your suggestion, which mail thread was it?
Best Regards,
Elena.
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