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From: Eli Cohen <eli-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
To: Ursula Braun
	<ubraun-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
	Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Saeed Mahameed <saeedm-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: RE: Fwd: mlx5_ib_post_send panic on s390x
Date: Mon, 6 Mar 2017 13:08:46 +0000	[thread overview]
Message-ID: <AM4PR0501MB278723F1BF4DA9846C664C62C52C0@AM4PR0501MB2787.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <491cf3e1-b2f8-3695-ecd4-3d34b0ae9e25-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>

>>
>> The problem seems to be caused by the usage of plain memcpy in set_data_inl_seg().
>> The address provided by SMC-code in struct ib_send_wr *wr is an 
>> address belonging to an area mapped with the ib_dma_map_single() 
>> call. On s390x those kind of addresses require extra access functions (see arch/s390/include/asm/io.h).
>>

By definition, when you are posting a send request with inline, the address must be mapped to the cpu so plain memcpy should work.

  parent reply	other threads:[~2017-03-06 13:08 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-24  9:51 mlx5_ib_post_send panic on s390x Ursula Braun
     [not found] ` <56246ac0-a706-291c-7baa-a6dd2c6331cd-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-02-24 17:28   ` Eli Cohen
     [not found]     ` <AM4PR0501MB2787E2BB6C8CBBCA5DCE9E82C5520-dp/nxUn679jFcPxmzbbP+MDSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2017-03-06 11:17       ` Ursula Braun
     [not found]         ` <ea211a05-f26a-e7a7-27b4-fc5edc2e3b57-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-03-06 12:56           ` Eli Cohen
     [not found]             ` <AM4PR0501MB27879C1EBF26FBF02F088AD7C52C0-dp/nxUn679jFcPxmzbbP+MDSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2017-03-06 13:47               ` Ursula Braun
     [not found] ` <dcc90daa-b932-8957-d8bc-e1f02d04e03a@linux.vnet.ibm.com>
     [not found]   ` <20e4f31e-b2a7-89fb-d4c0-583c0dc1efb6@mellanox.com>
     [not found]     ` <20e4f31e-b2a7-89fb-d4c0-583c0dc1efb6-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2017-03-06 13:03       ` Fwd: " Ursula Braun
     [not found]         ` <491cf3e1-b2f8-3695-ecd4-3d34b0ae9e25-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-03-06 13:08           ` Eli Cohen [this message]
     [not found]             ` <AM4PR0501MB278723F1BF4DA9846C664C62C52C0-dp/nxUn679jFcPxmzbbP+MDSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2017-03-09  9:54               ` Ursula Braun
     [not found]                 ` <e57691e1-55bc-308a-fc91-0a8072218dd5-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-03-09 12:58                   ` Eli Cohen
2017-03-12 20:20                   ` Parav Pandit
     [not found]                     ` <VI1PR0502MB300817FC6256218DE800497BD1220-o1MPJYiShExKsLr+rGaxW8DSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2017-03-12 20:38                       ` Parav Pandit
2017-03-14 15:02                       ` Ursula Braun
     [not found]                         ` <04049739-a008-f7c7-4f7a-30616fbf787a-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-03-14 15:24                           ` Parav Pandit
     [not found]                             ` <VI1PR0502MB30081C4618B1905B82247F05D1240-o1MPJYiShExKsLr+rGaxW8DSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2017-03-16 11:51                               ` Ursula Braun
     [not found]                                 ` <8e791524-dd66-629d-7f44-9050d9c7715a-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-03-20 21:04                                   ` Parav Pandit

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