From: Bruce Richardson <bruce.richardson@intel.com>
To: Riccardo Ravaioli <riccardoravaioli@gmail.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] AVX check
Date: Thu, 26 Apr 2018 17:34:38 +0100 [thread overview]
Message-ID: <20180426163437.GA84332@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <CAOFj0UVHOVFrEdKCZPuQMLWffxoKp9o=DbtDNnmTdyQtEb0yGQ@mail.gmail.com>
On Thu, Apr 26, 2018 at 06:06:47PM +0200, Riccardo Ravaioli wrote:
> Hi all,
>
> I need to install DPDK on 64-bit Linux machines whose processors might or
> might not support AVX instructions. In my current configuration file,
> defconfig_x86-64-native-linuxapp-gcc, the parameter CONFIG_RTE_MACHINE is
> set to native. If I compile DPDK on a machine that supports AVX and then I
> install it (along with openvswitch) on a machine that does *not* support
> AVX, openvswitch won't start and will output an "illegal instruction"
> error.
>
> I'm proposing the following patch to fix this issue:
>
Hi,
rather than changing the code, the best way to handle this is to change the
build target to something other than "native" in the build config file. I
would suggest "nehalem" as a suitable MACHINE type value. This provides
SSE4.x support, but no AVX.
/Bruce
prev parent reply other threads:[~2018-04-26 16:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-26 16:06 Riccardo Ravaioli
2018-04-26 16:34 ` Bruce Richardson [this message]
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