From: keith.busch@intel.com (Keith Busch)
Subject: PRP1 not min page size aligned in read/write cmds
Date: Wed, 5 Apr 2017 09:12:25 -0400 [thread overview]
Message-ID: <20170405131225.GR20181@localhost.localdomain> (raw)
In-Reply-To: <CAG3=cOn1rZHQ7dETovf5n=_3QRSMOrZFC+PibNJiQeH0kr2ZWA@mail.gmail.com>
On Tue, Apr 04, 2017@06:28:30PM -0700, Nisha Miller wrote:
> We have specified Min page size as 4K in our FW. So we expect that all
> read/write commands sent to FW will operate on multiples of 4K blocks.
> However we observe that sometimes we receive read/write commands where
> the PRP1 address is not 4K aligned, e.g 0x84CD5CD50. Is this normal or
> expected?
Yes, the first PRP entry and any list pointer may have an offset. The
remaining entries can not. See section 4.3, figure 14 in NVMe 1.2.1 spec.
prev parent reply other threads:[~2017-04-05 13:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-05 1:28 PRP1 not min page size aligned in read/write cmds Nisha Miller
2017-04-05 13:12 ` Keith Busch [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170405131225.GR20181@localhost.localdomain \
--to=keith.busch@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox