linux-kernel - Re: [PATCH v2 2/5] perf/x86/intel: Record branch type

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <a3ef37a8-ab07-cce6-fbcf-f8fa11b03186@linux.intel.com>
Date:   Sat, 8 Apr 2017 16:46:29 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Andi Kleen <ak@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     acme@...nel.org, jolsa@...nel.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, Linux-kernel@...r.kernel.org,
        kan.liang@...el.com, yao.jin@...el.com,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v2 2/5] perf/x86/intel: Record branch type

> Without this patch, we don't know if it's conditional or something else.
> And the kernel already knows this for its filtering, so it can as well
> report it.
>
> Right the CROSS_* and forward backward information could be computed
> later.
>
> -Andi
>
>
OK, I will move CROSS_* and JCC forward/backward computing to user-space though it makes user-space code to be complicated.

Thanks
Jin Yao