linux-kernel - compiling of tools/perf fail on x86 64bit kernel and 32bit userspace

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Message-ID: <4DC427D4.7030903@gmail.com>
Date:	Fri, 06 May 2011 18:54:44 +0200
From:	Riccardo Magliocchetti <riccardo.magliocchetti@...il.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...e.hu>
Subject: compiling of tools/perf fail on x86 64bit kernel and 32bit userspace

Hi,

with latest git, i cannot compile perf on 32 bit userspace with a 64 bit 
kernel.

~/src/linux-2.6/tools/perf$ make
PERF_VERSION = 2.6.39.rc6.224.g06d006f
     GEN common-cmds.h
     * new build flags or prefix
     CC perf.o
     CC builtin-annotate.o
     CC builtin-bench.o
     CC bench/sched-messaging.o
     CC bench/sched-pipe.o
     CC bench/mem-memcpy-x86-64-asm.o
bench/../../../arch/x86/lib/memcpy_64.S: Assembler messages:
bench/../../../arch/x86/lib/memcpy_64.S:28: Error: bad register name `%rdi'
bench/../../../arch/x86/lib/memcpy_64.S:33: Error: invalid instruction 
suffix for `movs'

ARCH=x86 make works fine

thanks,
riccardo
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