From: Jason Gunthorpe <jgg@nvidia.com>
To: Wenpeng Liang <liangwenpeng@huawei.com>
Cc: dledford@redhat.com, linux-rdma@vger.kernel.org, linuxarm@huawei.com
Subject: Re: [PATCH for-rc] RDMA/hns: Modify the value of MAX_LP_MSG_LEN to meet hardware compatibility
Date: Fri, 29 Oct 2021 12:06:24 -0300 [thread overview]
Message-ID: <20211029150624.GC834869@nvidia.com> (raw)
In-Reply-To: <20211029100537.27299-1-liangwenpeng@huawei.com>
On Fri, Oct 29, 2021 at 06:05:37PM +0800, Wenpeng Liang wrote:
> From: Yixing Liu <liuyixing1@huawei.com>
>
> The upper limit of MAX_LP_MSG_LEN on HIP08 is 64K, and the upper limit on
> HIP09 is 16K. Regardless of whether it is HIP08 or HIP09, only 16K will be
> used. In order to ensure compatibility, it is unified to 16K.
>
> Setting MAX_LP_MSG_LEN to 16K will not cause the performance loss of HIP08.
>
> Fixes: fbed9d2be292 ("RDMA/hns: Fix configuration of ack_req_freq in QPC")
> Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
> Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
> ---
> drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Applied to for-rc, thanks
Jason
prev parent reply other threads:[~2021-10-29 15:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-29 10:05 [PATCH for-rc] RDMA/hns: Modify the value of MAX_LP_MSG_LEN to meet hardware compatibility Wenpeng Liang
2021-10-29 15:06 ` Jason Gunthorpe [this message]
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