From: Klaus Jensen <its@irrelevant.dk>
To: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
Cc: kbusch@kernel.org, kwolf@redhat.com, qemu-devel@nongnu.org,
qemu-block@nongnu.org, mreitz@redhat.com
Subject: Re: [PATCH v6] nvme: allow cmb and pmr emulation on same device
Date: Mon, 28 Sep 2020 12:51:21 +0200 [thread overview]
Message-ID: <20200928105121.GC33043@apples.localdomain> (raw)
In-Reply-To: <20200729220107.37758-1-andrzej.jakowski@linux.intel.com>
[-- Attachment #1: Type: text/plain, Size: 2563 bytes --]
On Jul 29 15:01, Andrzej Jakowski wrote:
> Resending series recently posted on mailing list related to nvme device
> extension with couple of fixes after review.
>
> This patch series does following:
> - Fixes problem where CMBS bit was not set in controller capabilities
> register, so support for CMB was not correctly advertised to guest.
> This is resend of patch that has been submitted and reviewed by
> Klaus [1]
> - Introduces BAR4 sharing between MSI-X vectors and CMB. This allows
> to have CMB and PMR emulated on the same device. This extension
> was indicated by Keith [2]
>
> v6:
> - instead of using memory_region_to_absolute_addr() function local helper has
> been defined (nvme_cmb_to_absolute_addr()) to calculate absolute address of
> CMB in simplified way. Also a number of code style changes has been done
> (function rename, use literal instead of macro definition, etc.)
>
> v5:
> - fixed problem introduced in v4 where CMB buffer was represented as
> subregion of BAR4 memory region. In that case CMB address was used
> incorrectly as it was relative to BAR4 and not absolute. Appropriate
> changes were added to v5 to calculate CMB address properly ([6])
>
> v4:
> - modified BAR4 initialization, so now it consists of CMB, MSIX and
> PBA memory regions overlapping on top of it. This reduces patch
> complexity significantly (Klaus [5])
>
> v3:
> - code style fixes including: removal of spurious line break, moving
> define into define section and code alignment (Klaus [4])
> - removed unintended code reintroduction (Klaus [4])
>
> v2:
> - rebase on Kevin's latest block branch (Klaus [3])
> - improved comments section (Klaus [3])
> - simplified calculation of BAR4 size (Klaus [3])
>
> v1:
> - initial push of the patch
>
> [1]: https://lore.kernel.org/qemu-devel/20200408055607.g2ii7gwqbnv6cd3w@apples.localdomain/
> [2]: https://lore.kernel.org/qemu-devel/20200330165518.GA8234@redsun51.ssa.fujisawa.hgst.com/
> [3]: https://lore.kernel.org/qemu-devel/20200605181043.28782-1-andrzej.jakowski@linux.intel.com/
> [4]: https://lore.kernel.org/qemu-devel/20200618092524.posxi5mysb3jjtpn@apples.localdomain/
> [5]: https://lore.kernel.org/qemu-devel/20200626055033.6vxqvi4s5pll7som@apples.localdomain/
> [6]: https://lore.kernel.org/qemu-devel/9143a543-d32d-f3e7-c37b-b3df7f853952@linux.intel.com/
>
Hi Andrzej,
Any chance you can respin this on git.infradead.org/qemu-nvme.git
nvme-next branch?
Thanks,
Klaus
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
prev parent reply other threads:[~2020-09-28 11:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 22:01 [PATCH v6] nvme: allow cmb and pmr emulation on same device Andrzej Jakowski
2020-07-29 22:01 ` [PATCH v6 1/2] nvme: indicate CMB support through controller capabilities register Andrzej Jakowski
2020-07-29 22:01 ` [PATCH v6 2/2] nvme: allow cmb and pmr to be enabled on same device Andrzej Jakowski
2020-07-29 22:50 ` Klaus Jensen
2020-08-17 6:29 ` Klaus Jensen
2020-09-22 9:04 ` Klaus Jensen
2020-09-22 15:30 ` Keith Busch
2020-09-28 10:51 ` Klaus Jensen [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=20200928105121.GC33043@apples.localdomain \
--to=its@irrelevant.dk \
--cc=andrzej.jakowski@linux.intel.com \
--cc=kbusch@kernel.org \
--cc=kwolf@redhat.com \
--cc=mreitz@redhat.com \
--cc=qemu-block@nongnu.org \
--cc=qemu-devel@nongnu.org \
/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;
as well as URLs for NNTP newsgroup(s).