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] [thread-next>] [day] [month] [year] [list]
Message-ID: <20180507184001.GE4050@tassilo.jf.intel.com>
Date:   Mon, 7 May 2018 11:40:01 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Josh Hunt <johunt@...mai.com>
Cc:     mingo@...hat.com, acme@...nel.org, peterz@...radead.org,
        alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
        namhyung@...nel.org, wangnan0@...wei.com,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        eranian@...gle.com
Subject: Re: [PATCH v2] perf tools: allow map files to specify DSO

On Mon, May 07, 2018 at 02:24:16PM -0400, Josh Hunt wrote:
> Add the ability to specify a DSO in the /tmp/perf-<PID>.map file.
> The DSO should be the first line in the file and readable by the
> running user. If a valid DSO is found all other contents of the
> file will be ignored. This allows things like callchain unwinding
> with DWARF to work.

FWIW it's ok, but also obsolete with Kirill's large-pages-in-tmpfs
work in newer kernels. With that you can just copy the executable into
a 2MB tmpfs and disable the manual huge page copying and everything
should work as usually.

So essentially it's only a hack for old kernels and old binaries.

But doesn't hurt I guess.

-Andi

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ