From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: Re: multipath IB/srp fail-over testing lands up in dump stack in swiotlb_alloc_coherent() Date: Tue, 14 Jun 2016 15:08:33 +0300 Message-ID: <20160614120833.GO5408@leon.nu> References: <19156300.41876496.1465771227395.JavaMail.zimbra@redhat.com> <2d316ddf-9a2a-3aba-cf2d-fcdaafbaa848@sandisk.com> <20160613140747.GL5408@leon.nu> <946373818.41993264.1465827597452.JavaMail.zimbra@redhat.com> <887623939.42004497.1465831339845.JavaMail.zimbra@redhat.com> <450384210.42057823.1465857004662.JavaMail.zimbra@redhat.com> <1964187258.42093298.1465869387551.JavaMail.zimbra@redhat.com> <11e680c4-84b3-1cd6-133c-36f71bd853d0@sandisk.com> Reply-To: leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="Sr6hGnsCY8KeifOY" Return-path: Content-Disposition: inline In-Reply-To: <11e680c4-84b3-1cd6-133c-36f71bd853d0-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Bart Van Assche Cc: Laurence Oberman , Yishai Hadas , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org --Sr6hGnsCY8KeifOY Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jun 14, 2016 at 11:24:28AM +0200, Bart Van Assche wrote: > On 06/14/2016 03:56 AM, Laurence Oberman wrote: > >Tracing [ ... ] >=20 > Hello Laurence, >=20 > Can you try to set the kernel command line parameter swiotlb to a value t= hat > is a multiple of its default (64MB), reboot and see whether that helps? S= ee > also Documentation/kernel-parameters.txt in the kernel tree. Do you think that 64MB is not enough for this scenario? >=20 > Thanks, >=20 > Bart. >=20 >=20 --Sr6hGnsCY8KeifOY Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJXX/PBAAoJEORje4g2clinQtYP/1g3RoO1pcRNQpyXipPBdGz6 qC6fqh6TEsLmeCbpubiPUqPDBfR8ZpNTMqPJNQ0dprzjtvijoLU0egz29N2aN2EW soal1MENXU+vvGw3EDJrxVArvwOgkQ7etgU8hbWjvrD62io+oFdV13Qvmc+/O7h4 ZkCNbsGmgwJYa6Cx39hXPRei8vKS6s8jzIN0VmYCbZBRWJMIwuZWv0oVg+vQCmQK Hnxn4Hiq6w2ZYdio26dIoYDl+sPYBxHHEKr+kernIOdMVhOzEIpA4JMVZmeV75d5 iZZv/+3GoSC+0vwu9+oHaND0mlIY6ltGJOnXbPnWWZQUwxMvVhOZP35dqcqypyjX Em1J2yz5fCFY3ZAajOauYCCq4ESh5SPV5HvmzbPHt6BEws7dJvFbDtPGOlcc2j1i 5bJpojPw+9oeYhNaLDfGGBKbrx/w8ZA62uHqTV96IrlLPCiQ76iZoJ6IzBaIZrL+ gIWoMDuC4CqI+TqylkJgruLmJQbkQtkzXkJ34Y8LrWwP4gW0HxOIKfi0ZakBwjy8 4Au2rlksbFUSdUQ2F47TXLALXf2UQvWlQNvMFVcMz0G0vVkUpW2X4uzZ07OFLvBh 5sQCabziBUl40nCjAG4k9l8p9luYu7ooRn0+q0DGii+UGF95FZhxCSv9hFoaXbGu dM8C9dKUSeCOWic++uk0 =4jr7 -----END PGP SIGNATURE----- --Sr6hGnsCY8KeifOY-- -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html