From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Cyril Chemparathy <cchemparathy@ezchip.com>
Cc: dev@dpdk.org
Subject: Re: [PATCH v2 05/10] eal: add and use unaligned integer types
Date: Mon, 22 Jun 2015 11:36:20 +0200 [thread overview]
Message-ID: <4101438.HZvvEl93na@xps13> (raw)
In-Reply-To: <1434735293-15469-6-git-send-email-cchemparathy@ezchip.com>
2015-06-19 10:34, Cyril Chemparathy:
> On machines that are strict on pointer alignment, current code breaks
> on GCC's -Wcast-align checks on casts from narrower to wider types.
> This patch introduces new unaligned_uint(16|32|64)_t types, which
> correctly retain alignment in such cases.
[...]
> +#ifdef RTE_ARCH_STRICT_ALIGN
> +typedef uint64_t unaligned_uint64_t __attribute__ ((aligned(1)));
> +typedef uint32_t unaligned_uint32_t __attribute__ ((aligned(1)));
> +typedef uint16_t unaligned_uint16_t __attribute__ ((aligned(1)));
> +#else
> +typedef uint64_t unaligned_uint64_t;
> +typedef uint32_t unaligned_uint32_t;
> +typedef uint16_t unaligned_uint16_t;
> +#endif
CONFIG_RTE_ARCH_STRICT_ALIGN should be declared (and disabled) in config templates.
next prev parent reply other threads:[~2015-06-22 9:37 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-19 17:34 [PATCH v2 00/10] Improve cast alignment for strict aligned machines Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 01/10] mempool: silence -Wcast-align on pointer arithmetic Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 02/10] mbuf: " Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 03/10] ethdev: " Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 04/10] hash: " Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 05/10] eal: add and use unaligned integer types Cyril Chemparathy
2015-06-22 9:36 ` Thomas Monjalon [this message]
2015-06-22 16:47 ` Cyril Chemparathy
2015-06-22 16:56 ` Thomas Monjalon
2015-06-19 17:34 ` [PATCH v2 06/10] app/test-pmd: pack simple_gre_hdr Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 07/10] app/test: use struct ether_addr instead of a byte array cast Cyril Chemparathy
2015-06-22 1:56 ` Stephen Hemminger
2015-06-22 16:40 ` Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 08/10] librte_mbuf: Add rte_pktmbuf_mtod_offset() Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 09/10] librte_mbuf: Add transform for rte_pktmbuf_mtod_offset() Cyril Chemparathy
2015-06-19 17:34 ` [PATCH v2 10/10] librte_mbuf: Apply mtod-offset.cocci transform Cyril Chemparathy
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