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Message-Id: <20170516.145308.1101082394249977339.davem@davemloft.net> Date: Tue, 16 May 2017 14:53:08 -0400 (EDT) From: David Miller <davem@...emloft.net> To: ubraun@...ux.vnet.ibm.com Cc: hch@....de, netdev@...r.kernel.org, linux-rdma@...r.kernel.org, linux-s390@...r.kernel.org, jwi@...ux.vnet.ibm.com, schwidefsky@...ibm.com, heiko.carstens@...ibm.com, raspl@...ux.vnet.ibm.com Subject: Re: [PATCH V3 net 1/1] smc: switch to usage of IB_PD_UNSAFE_GLOBAL_RKEY From: Ursula Braun <ubraun@...ux.vnet.ibm.com> Date: Mon, 15 May 2017 17:33:37 +0200 > Currently, SMC enables remote access to physical memory when a user > has successfully configured and established an SMC-connection until ten > minutes after the last SMC connection is closed. Because this is considered > a security risk, drivers are supposed to use IB_PD_UNSAFE_GLOBAL_RKEY in > such a case. > > This patch changes the current SMC code to use IB_PD_UNSAFE_GLOBAL_RKEY. > This improves user awareness, but does not remove the security risk itself. > > Signed-off-by: Ursula Braun <ubraun@...ux.vnet.ibm.com> Applied.
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