From: Li Zhijian <lizhijian@cn.fujitsu.com>
To: <linux-rdma@vger.kernel.org>, <zyjzyj2000@gmail.com>,
<jgg@ziepe.ca>, <aharonl@nvidia.com>, <leon@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <mbloch@nvidia.com>,
<liweihang@huawei.com>, <liangwenpeng@huawei.com>,
<yangx.jy@cn.fujitsu.com>, <rpearsonhpe@gmail.com>,
<y-goto@fujitsu.com>, Li Zhijian <lizhijian@cn.fujitsu.com>
Subject: [RFC PATCH rdma-next 05/10] RDMA/rxe: Allow registering persistent flag for pmem MR only
Date: Tue, 28 Dec 2021 16:07:12 +0800 [thread overview]
Message-ID: <20211228080717.10666-6-lizhijian@cn.fujitsu.com> (raw)
In-Reply-To: <20211228080717.10666-1-lizhijian@cn.fujitsu.com>
Memory region should support 2 placement types: IB_ACCESS_FLUSH_PERSISTENT
and IB_ACCESS_FLUSH_GLOBAL_VISIBILITY, and only pmem/nvdimm has ability to
persist data(IB_ACCESS_FLUSH_PERSISTENT).
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
---
drivers/infiniband/sw/rxe/rxe_mr.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c
index bcd5e7afa475..21616d058f29 100644
--- a/drivers/infiniband/sw/rxe/rxe_mr.c
+++ b/drivers/infiniband/sw/rxe/rxe_mr.c
@@ -206,6 +206,11 @@ static bool iova_in_pmem(struct rxe_mr *mr, u64 iova, int length)
return page_in_dev_pagemap(page);
}
+static bool ib_check_flush_access_flags(struct ib_mr *mr, u32 flags)
+{
+ return mr->is_pmem || !(flags & IB_ACCESS_FLUSH_PERSISTENT);
+}
+
int rxe_mr_init_user(struct rxe_pd *pd, u64 start, u64 length, u64 iova,
int access, struct rxe_mr *mr)
{
@@ -282,6 +287,13 @@ int rxe_mr_init_user(struct rxe_pd *pd, u64 start, u64 length, u64 iova,
// iova_in_pmem must be called after set is updated
mr->ibmr.is_pmem = iova_in_pmem(mr, iova, length);
+ if (!ib_check_flush_access_flags(&mr->ibmr, access)) {
+ pr_err("Cannot set IB_ACCESS_FLUSH_PERSISTENT for non-pmem memory\n");
+ mr->state = RXE_MR_STATE_INVALID;
+ mr->umem = NULL;
+ err = -EINVAL;
+ goto err_release_umem;
+ }
return 0;
--
2.31.1
next prev parent reply other threads:[~2021-12-28 8:02 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-28 8:07 [RFC PATCH rdma-next 00/10] RDMA/rxe: Add RDMA FLUSH operation Li Zhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 01/10] RDMA: mr: Introduce is_pmem Li Zhijian
2022-01-06 0:21 ` Jason Gunthorpe
2022-01-06 6:12 ` lizhijian
2022-01-14 8:10 ` Li, Zhijian
2022-01-27 22:30 ` Jeff Moyer
2022-01-16 18:11 ` Dan Williams
2022-01-18 8:55 ` lizhijian
2022-01-18 15:28 ` Dan Williams
2022-01-19 2:01 ` lizhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 02/10] RDMA: Allow registering MR with flush access flags Li Zhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 03/10] RDMA/rxe: Allow registering FLUSH flags for supported device only Li Zhijian
2022-01-06 0:22 ` Jason Gunthorpe
2022-01-06 6:20 ` lizhijian
2022-01-13 6:43 ` lizhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 04/10] RDMA/rxe: Enable IB_DEVICE_RDMA_FLUSH for rxe device Li Zhijian
2022-01-06 0:22 ` Jason Gunthorpe
2022-01-06 6:26 ` lizhijian
2021-12-28 8:07 ` Li Zhijian [this message]
2021-12-30 22:25 ` [RFC PATCH rdma-next 05/10] RDMA/rxe: Allow registering persistent flag for pmem MR only Tom Talpey
2021-12-31 3:34 ` lizhijian
2021-12-31 14:40 ` Tom Talpey
2022-01-04 1:32 ` lizhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 06/10] RDMA/rxe: Implement RC RDMA FLUSH service in requester side Li Zhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 07/10] RDMA/rxe: Set BTH's SE to zero for FLUSH packet Li Zhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 08/10] RDMA/rxe: Implement flush execution in responder side Li Zhijian
2021-12-30 22:18 ` Tom Talpey
2021-12-31 1:37 ` lizhijian
2021-12-31 2:32 ` Tom Talpey
2022-01-04 8:51 ` lizhijian
2022-01-04 16:02 ` Tom Talpey
2022-01-06 0:35 ` Jason Gunthorpe
2022-01-04 16:40 ` Tom Talpey
2022-01-05 1:43 ` lizhijian
2022-01-06 0:28 ` Jason Gunthorpe
2022-01-06 6:42 ` lizhijian
2022-01-06 17:33 ` Jason Gunthorpe
2022-01-10 5:45 ` lizhijian
2022-01-10 14:34 ` Jason Gunthorpe
2022-01-11 5:34 ` lizhijian
2022-01-11 20:48 ` Jason Gunthorpe
2022-01-12 9:50 ` lizhijian
2022-01-12 13:12 ` Jason Gunthorpe
2022-01-13 6:29 ` lizhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 09/10] RDMA/rxe: Implement flush completion Li Zhijian
2021-12-28 8:07 ` [RFC PATCH rdma-next 10/10] RDMA/rxe: Add RD FLUSH service support Li Zhijian
2021-12-29 8:49 ` [RFC PATCH rdma-next 00/10] RDMA/rxe: Add RDMA FLUSH operation Gromadzki, Tomasz
2021-12-29 14:35 ` Tom Talpey
2021-12-31 1:10 ` lizhijian
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