From: hch@infradead.org (Christoph Hellwig)
Subject: [PATCH v4 2/6] block: Add Sed-opal library
Date: Mon, 23 Jan 2017 23:46:22 -0800 [thread overview]
Message-ID: <20170124074622.GA27932@infradead.org> (raw)
In-Reply-To: <20170119182839.GB9228@sbauer-Z170X-UD5>
On Thu, Jan 19, 2017@11:28:40AM -0700, Scott Bauer wrote:
> Just let alloc_opal_dev kzalloc normally and do no alignment. It would then
> be up to the drivers to move the data from the buffer to a bounce buffer,
> that is aligned, in the send/recv functions before sending down to the controller.
>
> Both are easy to implement but we wanted to see if anyone had other ideas or liked
> one over the other.
Option two works, and there won't be any bounce buffering as kmalloc
allocations are always naturally and dma boundary aligned.
Option three is to simply drop the alignment and let the block
layer bounce buffer if needed.
Either two or three are fine with me.
next prev parent reply other threads:[~2017-01-24 7:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-29 19:26 [PATCH v4 0/6] SED OPAL Library Scott Bauer
2016-12-29 19:26 ` [PATCH v4 1/6] Include: Uapi: Add user ABI for Sed/Opal Scott Bauer
2016-12-29 19:26 ` [PATCH v4 2/6] block: Add Sed-opal library Scott Bauer
2016-12-30 21:02 ` Jon Derrick
2017-01-08 13:32 ` Christoph Hellwig
2017-01-08 14:05 ` Christoph Hellwig
2017-01-11 17:47 ` J Freyensee
2017-01-30 17:08 ` Scott Bauer
2017-01-19 18:28 ` Scott Bauer
2017-01-24 0:20 ` J Freyensee
2017-01-24 7:46 ` Christoph Hellwig [this message]
2016-12-29 19:26 ` [PATCH v4 3/6] block: add ioctl interface for interfacing with Opal library Scott Bauer
2017-01-08 14:06 ` Christoph Hellwig
2016-12-29 19:26 ` [PATCH v4 4/6] block: Add Opal Files to Makefile & add config option to Kconfig Scott Bauer
2017-01-08 14:09 ` Christoph Hellwig
2016-12-29 19:26 ` [PATCH v4 5/6] nvme: Add Support for Opal: Unlock from S3 & Opal Allocation/Ioctls Scott Bauer
2017-01-08 14:20 ` Christoph Hellwig
2017-01-18 18:45 ` Keith Busch
2017-01-24 8:14 ` Christoph Hellwig
2017-01-19 19:32 ` Jon Derrick
2016-12-29 19:26 ` [PATCH v4 6/6] Maintainers: Add maintainer info for SED/Opal library Scott Bauer
2016-12-29 21:00 ` [PATCH v4 0/6] SED OPAL Library Scott Bauer
2016-12-30 8:28 ` Christoph Hellwig
2016-12-30 22:52 ` Scott Bauer
2016-12-31 3:51 ` Christoph Hellwig
2016-12-31 5:41 ` Scott Bauer
2016-12-31 5:47 ` Christoph Hellwig
2017-01-03 22:09 ` Scott Bauer
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