From: "hch@lst.de" <hch@lst.de>
To: "yangx.jy@fujitsu.com" <yangx.jy@fujitsu.com>
Cc: Ira Weiny <ira.weiny@intel.com>, Jason Gunthorpe <jgg@nvidia.com>,
"lizhijian@fujitsu.com" <lizhijian@fujitsu.com>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"tom@talpey.com" <tom@talpey.com>,
"yanjun.zhu@linux.dev" <yanjun.zhu@linux.dev>,
"rpearsonhpe@gmail.com" <rpearsonhpe@gmail.com>,
"y-goto@fujitsu.com" <y-goto@fujitsu.com>,
"tomasz.gromadzki@intel.com" <tomasz.gromadzki@intel.com>,
"hch@lst.de" <hch@lst.de>
Subject: Re: [RFC PATCH v2 2/2] RDMA/rxe: Support RDMA Atomic Write operation
Date: Thu, 27 Jan 2022 10:57:30 +0100 [thread overview]
Message-ID: <20220127095730.GA14946@lst.de> (raw)
In-Reply-To: <b3b322be-a718-5fb8-11e2-05ee783f1086@fujitsu.com>
On Thu, Jan 27, 2022 at 09:37:59AM +0000, yangx.jy@fujitsu.com wrote:
> Do you mean we have to consider that some allocated pages come from high
> memory?
>
> I think INFINIBAND_VIRT_DMA kconfig[1] has ensured that all allocated
> pages have a kernel virtual address.
rxe and siw depend on INFINIBAND_VIRT_DMA which depends on !HIGHMEM,
so you don't need kmap here at all.
> In this case, is it OK to call page_address() directly?
Yes.
next prev parent reply other threads:[~2022-01-27 9:57 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-13 3:03 [RFC PATCH v2 0/2] RDMA/rxe: Add RDMA Atomic Write operation Xiao Yang
2022-01-13 3:03 ` [RFC PATCH v2 1/2] RDMA/rxe: Rename send_atomic_ack() and atomic member of struct resp_res Xiao Yang
2022-01-13 3:03 ` [RFC PATCH v2 2/2] RDMA/rxe: Support RDMA Atomic Write operation Xiao Yang
2022-01-13 11:35 ` kernel test robot
2022-01-13 12:16 ` kernel test robot
2022-01-13 12:16 ` kernel test robot
2022-01-17 13:16 ` Jason Gunthorpe
2022-01-18 8:01 ` yangx.jy
2022-01-18 12:35 ` Jason Gunthorpe
2022-01-19 1:54 ` lizhijian
2022-01-19 12:36 ` Jason Gunthorpe
2022-01-19 16:47 ` Ira Weiny
2022-01-20 12:07 ` Li, Zhijian
2022-01-21 12:58 ` Jason Gunthorpe
2022-01-21 16:06 ` Ira Weiny
2022-01-21 16:08 ` Ira Weiny
2022-01-24 3:47 ` lizhijian
2022-01-27 9:37 ` yangx.jy
2022-01-27 9:57 ` hch [this message]
2022-01-27 18:08 ` Ira Weiny
2022-01-28 6:16 ` hch
2022-01-28 19:15 ` Ira Weiny
2022-02-10 11:06 ` yangx.jy
2022-02-11 18:30 ` Ira Weiny
2022-01-18 8:02 ` yangx.jy
2022-01-18 8:04 ` yangx.jy
2022-01-18 9:03 ` yangx.jy
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