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SubjectRe: [PATCH] perf tools: Makefile: Use gcc to determine ARCH

* Lin Ming <> wrote:

> The original Makefile uses "uname -m" to determine ARCH.
> This causes problem on x86 when compile perf tool on 32 bit userspace
> with a 64 bit kernel.
> bench/../../../arch/x86/lib/memcpy_64.S: Assembler messages:
> bench/../../../arch/x86/lib/memcpy_64.S:28: Error: bad register name `%rdi'
> This is because "uname -m" returns x86_64 and memcpy_64.S is included in 32 bit build.
> Signed-off-by: Lin Ming <>

this changelog is missing an important line:

Reported-by: Riccardo Magliocchetti <>

I've added it.



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