From: keith.busch@intel.com (Keith Busch)
Subject: nvme: controller resets
Date: Wed, 11 Nov 2015 22:14:33 +0000 [thread overview]
Message-ID: <20151111221433.GA11250@localhost.localdomain> (raw)
In-Reply-To: <CAKajsGNGvWw1+B7X8HxdvP0MyvAawb_PStu_adOC8wogOF-Fbg@mail.gmail.com>
On Thu, Nov 12, 2015@03:26:04AM +0530, Vedant Lath wrote:
> [ 235.496753] nvme: submit: QID 1 CMD opcode 2 flags 0 cid 1 NSID 1
> [ 235.496755] nvme: submit: rsvd2 0 metadata 0 prp1 5897535488 prp2
> 2318221568 slba 41495303 length 0 control 0 dsmgmt 0 reftag 0 apptag 0
> appmask 0
Let's examine the above command.
You've got PRP1 set to 0x15f854000, and length set to 0 (1 block). Based
on other info provided on this device, a block is 4k.
Seeing PRP1 is 4k aligned and you're transferring 4k of data should
mean you only need one PRP. Your command however shows PRP2 is used and
pointing to a list (must be a list rather than data since the offset is
0x100 aligned).
Either your new prints are incomplete, or there's a nasty bug somewhere.
next prev parent reply other threads:[~2015-11-11 22:14 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-10 14:30 nvme: controller resets Stephan Günther
2015-11-10 15:51 ` Keith Busch
2015-11-10 20:45 ` Stephan Günther
2015-11-10 21:16 ` Vedant Lath
2015-11-10 21:34 ` Stephan Günther
2015-11-10 21:43 ` Vedant Lath
2015-11-10 22:02 ` Stephan Günther
2015-11-10 22:28 ` Vedant Lath
2015-11-11 21:56 ` Vedant Lath
2015-11-11 22:09 ` Stephan Günther
2015-11-12 14:02 ` Vedant Lath
2015-11-11 22:14 ` Keith Busch [this message]
2015-11-12 9:45 ` Vedant Lath
2015-11-12 11:26 ` Vedant Lath
2015-11-16 21:33 ` Stephan Günther
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