patches for DPDK stable branches
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From: Raslan Darawsheh <rasland@mellanox.com>
To: Dekel Peled <dekelp@mellanox.com>,
	Matan Azrad <matan@mellanox.com>,
	Slava Ovsiienko <viacheslavo@mellanox.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, "stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH] common/mlx5: fix umem buffer alignment
Date: Tue, 12 May 2020 11:52:44 +0000
Message-ID: <AM0PR05MB6707F2D8F58112CCF9697039C2BE0@AM0PR05MB6707.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <7a382de5e9be260f7cadb07fd5396f48615ea911.1589191348.git.dekelp@mellanox.com>

Hi,
> -----Original Message-----
> From: Dekel Peled <dekelp@mellanox.com>
> Sent: Monday, May 11, 2020 1:03 PM
> To: Matan Azrad <matan@mellanox.com>; Slava Ovsiienko
> <viacheslavo@mellanox.com>; Raslan Darawsheh <rasland@mellanox.com>
> Cc: dev@dpdk.org; stable@dpdk.org
> Subject: [PATCH] common/mlx5: fix umem buffer alignment
> 
> The value MLX5_WQE_BUF_ALIGNMENT is defined as 512.
> In some cases this alignment size is not adequate, which results in
> memory registration that is not accepted by FW.
> The result error can be "page_offset is not aligned to page_size/64,
> bad umem_offset" (syndrome 0x357275).
> 
> This patch updates the definition to match the running system.
> 
> Fixes: 18a68e046b51 ("net/mlx5: fix DevX Rx queue memory alignment")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Dekel Peled <dekelp@mellanox.com>
> Acked-by: Matan Azrad <matan@mellanox.com>
> ---
>  drivers/common/mlx5/mlx5_prm.h | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/common/mlx5/mlx5_prm.h
> b/drivers/common/mlx5/mlx5_prm.h
> index 4ab1c75..b39a141 100644
> --- a/drivers/common/mlx5/mlx5_prm.h
> +++ b/drivers/common/mlx5/mlx5_prm.h
> @@ -16,6 +16,8 @@
>  #pragma GCC diagnostic error "-Wpedantic"
>  #endif
> 
> +#include <unistd.h>
> +
>  #include <rte_vect.h>
>  #include <rte_byteorder.h>
> 
> @@ -251,7 +253,7 @@
>  #define MLX5_MAX_LOG_RQ_SEGS 5u
> 
>  /* The alignment needed for WQ buffer. */
> -#define MLX5_WQE_BUF_ALIGNMENT 512
> +#define MLX5_WQE_BUF_ALIGNMENT sysconf(_SC_PAGESIZE)
> 
>  /* Completion mode. */
>  enum mlx5_completion_mode {
> --
> 1.8.3.1


Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh


      reply	other threads:[~2020-05-12 11:52 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-11 10:02 Dekel Peled
2020-05-12 11:52 ` Raslan Darawsheh [this message]

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