From: Dave Hansen <dave.hansen@linux.intel.com>
To: speck@linutronix.de
Subject: [MODERATED] Re: Generic eBPF hardening
Date: Fri, 18 May 2018 11:18:26 -0700 [thread overview]
Message-ID: <31409ed3-62aa-cb1d-2145-203a686d98a7@linux.intel.com> (raw)
In-Reply-To: <20180517232115.mwmns6w6t32mjeze@ast-mbp>
On 05/17/2018 04:21 PM, speck for Alexei Starovoitov wrote:
> The main use case for unprivileged bpf is so_reuseport and socket filters.
> It's critical path of networking receive side.
> Adding lfence after every program won't be cheap.
Alexei, do you have any "benchmarks" or tests for these paths that you
regularly run to look for performance regressions? I'd definitely want
to run those as we look at potential mitigations.
next prev parent reply other threads:[~2018-05-18 18:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-17 20:55 [MODERATED] Generic eBPF hardening Dave Hansen
2018-05-17 22:22 ` [MODERATED] " Alexei Starovoitov
2018-05-17 22:54 ` Andi Kleen
2018-05-17 23:21 ` Alexei Starovoitov
2018-05-17 23:39 ` Andi Kleen
2018-05-18 18:18 ` Dave Hansen [this message]
2018-05-18 22:26 ` Alexei Starovoitov
2018-05-17 23:13 ` Dave Hansen
2018-05-17 23:24 ` Alexei Starovoitov
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