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
| ||
|
Date: Tue, 23 May 2017 09:07:01 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Jiri Slaby <jslaby@...e.cz> Cc: Josh Poimboeuf <jpoimboe@...hat.com>, Jiri Kosina <jikos@...nel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, live-patching@...r.kernel.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, the arch/x86 maintainers <x86@...nel.org>, Andy Lutomirski <luto@...nel.org> Subject: Re: [PATCH 7/7] DWARF: add the config option On Wed, May 10, 2017 at 10:32:06AM +0200, Jiri Slaby wrote: > > But it does hurt, in the sense that the complicated format of DWARF CFI > > means the unwinder has to jump through a lot more hoops to read it. > > Why that matters, actually? Unwinder is nothing to be performance > oriented. And if somebody is doing a lot of unwinding during runtime, > they can switch to in-this-case-faster FP unwinder. perf (and ftrace) like the unwinder to be considered performance oriented.
Powered by blists - more mailing lists