[PATCH v3 4/5] net/mlx5: drop unnecessary STRICT_ALIGN

[Dariusz Sosnowski]

> -----Original Message-----
> From: Stephen Hemminger <stephen at networkplumber.org>
> Sent: Monday, September 7, 2026 8:31 PM
> To: dev at dpdk.org
> Cc: Stephen Hemminger <stephen at networkplumber.org>; Dariusz Sosnowski
> <dsosnowski at nvidia.com>; Slava Ovsiienko <viacheslavo at nvidia.com>; Bing
> Zhao <bingz at nvidia.com>; Ori Kam <orika at nvidia.com>; Suanming Mou
> <suanmingm at nvidia.com>; Matan Azrad <matan at nvidia.com>
> Subject: [PATCH v3 4/5] net/mlx5: drop unnecessary STRICT_ALIGN
> 
> The transmit inline copy splits the 8 byte case into two 32 bit moves when
> RTE_ARCH_STRICT_ALIGN is set. Only armv8 aarch32 ever set that flag, and
> ARMv8 does unaligned access in hardware, so the split gains nothing. Use a
> single 64 bit move.
> 
> The destination is inline_data, at offset 4 of a 16 byte aligned dseg, so the 8
> byte store is always misaligned. Write it through the unaligned type; a plain
> uint64_t store there is undefined behaviour and is reported by UBSAN.
> 
> The debug assertion on the inline data offset goes away with the strict
> alignment path since the wider move has no such requirement.
> 
> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>

Acked-by: Dariusz Sosnowski <dsosnowski at nvidia.com>