From: Panu Matilainen <pmatilai-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: dev-VfR2kkLFssw@public.gmane.org
Subject: Re: rte_memcpy.h: additional cflags required with OVS
Date: Tue, 10 Mar 2015 09:52:07 +0200 [thread overview]
Message-ID: <54FEA2A7.90403@redhat.com> (raw)
In-Reply-To: <533710CFB86FA344BFBF2D6802E60286CFDC65-0J0gbvR4kThpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
On 03/10/2015 05:04 AM, Qiu, Michael wrote:
> On 3/10/2015 12:44 AM, Kavanagh, Mark B wrote:
>> Hi,
>>
>> Compilation of Open vSwitch fails when linked against current HEAD of DPDK (f2552cd5).
>>
>> The source of this issue appears to be commit ID 9144d6b: "eal/x86: optimize memcpy for SSE and AVX", and can be resolved by passing an additional argument to OVS when building same (CFLAGS="-march=native").
>> It seems that without this flag, OVS doesn't pick up one or more SSE #defines in DPDK, and doesn't include a relevant intrinsic header (emmintrin.h), leading to an 'implicit declaration' error for instrinsic '_mm_storeu_si128'.
>
> What's your gcc version? this should be an issue with old version gcc,
> and I'm working on this to solve this issue now. If you want to solve
> this you should upgrade gcc or include them manually, and remove header
> x86intrin.h .
At least gcc 4.8.2 (which is what RHEL-7 has) exhibits this, however gcc
4.9 and 5 "just work". The workaround I used was adding -msse4.1 to the
OVS CFLAGS manually.
- Panu -
next prev parent reply other threads:[~2015-03-10 7:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-09 16:44 rte_memcpy.h: additional cflags required with OVS Kavanagh, Mark B
[not found] ` <DC5AD7FA266D86499789B1BCAEC715F846D4EB43-pww93C2UFcwu0RiL9chJVbfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-03-09 17:51 ` Mcnamara, John
[not found] ` <B27915DBBA3421428155699D51E4CFE2ECC6E8-kPTMFJFq+rELt2AQoY/u9bfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-03-10 0:57 ` Mcnamara, John
2015-03-10 3:00 ` Qiu, Michael
[not found] ` <B27915DBBA3421428155699D51E4CFE2ECC997-kPTMFJFq+rELt2AQoY/u9bfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-03-10 9:16 ` Kavanagh, Mark B
2015-03-10 3:04 ` Qiu, Michael
[not found] ` <533710CFB86FA344BFBF2D6802E60286CFDC65-0J0gbvR4kThpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-03-10 7:52 ` Panu Matilainen [this message]
2015-03-10 8:27 ` Mcnamara, John
[not found] ` <B27915DBBA3421428155699D51E4CFE2ECCAB0-kPTMFJFq+rELt2AQoY/u9bfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-03-10 10:03 ` Kavanagh, Mark B
[not found] ` <DC5AD7FA266D86499789B1BCAEC715F846D4F022-pww93C2UFcwu0RiL9chJVbfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-03-11 4:37 ` Wang, Zhihong
[not found] ` <F60F360A2500CD45ACDB1D700268892D0E79FD30-0J0gbvR4kThpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-03-11 8:06 ` Mcnamara, John
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