linux-kernel - Re: [PATCH v3 11/12] perf disasm: Refactor arch_

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: <aXO0Hao8t-McaAU3@x1>
Date: Fri, 23 Jan 2026 14:47:09 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	James Clark <james.clark@...aro.org>,
	John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>,
	Leo Yan <leo.yan@...ux.dev>, Guo Ren <guoren@...nel.org>,
	Paul Walmsley <pjw@...nel.org>, Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Zecheng Li <zecheng@...gle.com>, Tianyou Li <tianyou.li@...el.com>,
	Thomas Falcon <thomas.falcon@...el.com>,
	Julia Lawall <Julia.Lawall@...ia.fr>,
	Suchit Karunakaran <suchitkarunakaran@...il.com>,
	Athira Rajeev <atrajeev@...ux.ibm.com>,
	Aditya Bodkhe <aditya.b1@...ux.ibm.com>,
	Howard Chu <howardchu95@...il.com>,
	Krzysztof Łopatowski <krzysztof.m.lopatowski@...il.com>,
	"Dr. David Alan Gilbert" <linux@...blig.org>,
	Shimin Guo <shimin.guo@...dio.com>,
	Sergei Trofimovich <slyich@...il.com>, linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-csky@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v3 11/12] perf disasm: Refactor arch__find and
 initialization of arch structs

On Thu, Jan 22, 2026 at 01:35:15PM -0800, Ian Rogers wrote:
> Switch arch__find to using an ELF machine number rather than a
> string. Rather than an array of fixed size arch structs turn the init
> functions into new functions indexed by the ELF machine they
> correspond to. This allows data to be stored with a struct arch with
> the container_of trick, so the priv variable can be removed. Switch to
> using the thread to find the arch rather than the evsel as the evsel
> only has limited notions of the running thread upon which disassembly
> is performed. Factor out the e_machine and e_flags into their own
> struct to make them easier to pass around.

Added:

⬢ [acme@...lbx perf-tools-next]$ git diff
diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c
index 46740d1e58580004..4f60726247d62764 100644
--- a/tools/perf/util/disasm.c
+++ b/tools/perf/util/disasm.c
@@ -1,5 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0-only
 #include <ctype.h>
+#include <elf.h>
+#ifndef EF_CSKY_ABIMASK
+#define EF_CSKY_ABIMASK        0XF0000000
+#endif
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>


With:

    [ Include elf.h for EM_CSKY and friends and also conditionally define EM_CSKY_ABIMASK for old distros ]