From: Jason Gunthorpe <jgg@ziepe.ca>
To: Weihang Li <liweihang@hisilicon.com>
Cc: dledford@redhat.com, linux-rdma@vger.kernel.org, linuxarm@huawei.com
Subject: Re: [PATCH for-next] RDMA/hns: Add support for extended atomic
Date: Thu, 2 Jan 2020 17:03:51 -0400 [thread overview]
Message-ID: <20200102210351.GA398@ziepe.ca> (raw)
In-Reply-To: <1573781966-45800-1-git-send-email-liweihang@hisilicon.com>
On Fri, Nov 15, 2019 at 09:39:26AM +0800, Weihang Li wrote:
> From: Jiaran Zhang <zhangjiaran@huawei.com>
>
> Support extended atomic operations including cmp & swap and fetch & add
> of 8 bytes, 16 bytes, 32 bytes, 64 bytes on hip08.
>
> Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
> Signed-off-by: Weihang Li <liweihang@hisilicon.com>
> ---
> drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 100 ++++++++++++++++++++++++-----
> drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 8 +++
> 2 files changed, 93 insertions(+), 15 deletions(-)
How is this related to the userspace patch:
https://github.com/linux-rdma/rdma-core/pull/640
?
Under what conditions would the kernel part be needed?
Confused because we have no kernel users of extended atomic.
Jason
next prev parent reply other threads:[~2020-01-02 21:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-15 1:39 [PATCH for-next] RDMA/hns: Add support for extended atomic Weihang Li
2019-12-10 13:10 ` Weihang Li
2019-12-19 19:07 ` Jason Gunthorpe
2020-01-02 21:03 ` Jason Gunthorpe [this message]
2020-01-03 5:57 ` Weihang Li
2020-01-03 13:39 ` Jason Gunthorpe
2020-01-14 1:53 ` Weihang Li
2020-01-14 13:29 ` Jason Gunthorpe
2020-01-15 1:30 ` Weihang Li
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