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Date: Fri, 30 Jun 2017 13:36:02 +0200
From: Olivier Matz <olivier.matz@6wind.com>
To: Daniel Verkamp <daniel.verkamp@intel.com>
Cc: dev@dpdk.org
Message-ID: <20170630133602.63d4f9ca@platinum>
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<20170602201213.51143-1-daniel.verkamp@intel.com>
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Subject: Re: [dpdk-dev] [PATCH v2] ring: use aligned memzone allocation
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On Fri, 2 Jun 2017 13:12:13 -0700, Daniel Verkamp <daniel.verkamp@intel.com> wrote:
> rte_memzone_reserve() provides cache line alignment, but
> struct rte_ring may require more than cache line alignment: on x86-64,
> it needs 128-byte alignment due to PROD_ALIGN and CONS_ALIGN, which are
> 128 bytes, but cache line size is 64 bytes.
>
> Fixes runtime warnings with UBSan enabled.
>
> Fixes: d9f0d3a1ffd4 ("ring: remove split cacheline build setting")
>
> Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>