From: axboe@kernel.dk (Jens Axboe)
Subject: [PATCH v2 1/1] nvme: Fix PRP list calculation for non-4k system page size
Date: Tue, 31 Mar 2015 10:40:12 -0600 [thread overview]
Message-ID: <551ACDEC.5040303@kernel.dk> (raw)
In-Reply-To: <alpine.LNX.2.00.1503261618220.32385@localhost.lm.intel.com>
On 03/26/2015 10:19 AM, Keith Busch wrote:
> On Thu, 26 Mar 2015, Brian King wrote:
>> From: Murali Iyer <mniyer at us.ibm.com>
>>
>> PRP list calculation is supposed to be based on device's page size.
>> Systems with page size larger than device's page size cause corruption
>> to the name space as well as system memory with out this fix.
>> Systems like x86 might not experience this issue because it uses
>> PAGE_SIZE of 4K where as powerpc uses PAGE_SIZE of 64k while NVMe
>> device's
>> page size varies depending upon the vendor.
>
> Thanks!
>
> Acked-by: Keith Busch <keith.busch at intel.com>
Added for 4.1.
--
Jens Axboe
prev parent reply other threads:[~2015-03-31 16:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-24 22:26 [PATCH 1/1] nvme: Fix PRP list calculation for non-4k system page size Brian King
2015-03-24 22:43 ` Keith Busch
2015-03-26 16:07 ` [PATCH v2 " Brian King
2015-03-26 16:19 ` Keith Busch
2015-03-31 16:40 ` Jens Axboe [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=551ACDEC.5040303@kernel.dk \
--to=axboe@kernel.dk \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.