From: Zhangfei Gao <zhangfei.gao@linaro.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: Joerg Roedel <joro@8bytes.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Arnd Bergmann <arnd@arndb.de>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Hanjun Guo <guohanjun@huawei.com>,
Sudeep Holla <sudeep.holla@arm.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <lenb@kernel.org>,
jean-philippe <jean-philippe@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
kenneth-lee-2012@foxmail.com, Wangzhou <wangzhou1@hisilicon.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-crypto@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/2] PCI: Introduce PCI_FIXUP_IOMMU
Date: Tue, 26 May 2020 23:09:57 +0800 [thread overview]
Message-ID: <39144dc0-3b04-3127-978b-bd8487dd06e0@linaro.org> (raw)
In-Reply-To: <20200526144644.GA20784@infradead.org>
Hi, Christoph
On 2020/5/26 下午10:46, Christoph Hellwig wrote:
> On Tue, May 26, 2020 at 07:49:08PM +0800, Zhangfei Gao wrote:
>> Some platform devices appear as PCI but are actually on the AMBA bus,
>> and they need fixup in drivers/pci/quirks.c handling iommu_fwnode.
>> Here introducing PCI_FIXUP_IOMMU, which is called after iommu_fwnode
>> is allocated, instead of reusing PCI_FIXUP_FINAL since it will slow
>> down iommu probing as all devices in fixup final list will be
>> reprocessed.
> Who is going to use this? I don't see a single user in the series.
We will add iommu fixup in drivers/pci/quirks.c, handling
fwspec->can_stall, which is introduced in
https://www.spinics.net/lists/linux-pci/msg94559.html
Unfortunately, the patch does not catch v5.8, so we have to wait.
And we want to check whether this is a right method to solve this issue.
Thanks
next prev parent reply other threads:[~2020-05-26 15:10 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-26 11:49 [PATCH 0/2] Introduce PCI_FIXUP_IOMMU Zhangfei Gao
2020-05-26 11:49 ` [PATCH 1/2] PCI: " Zhangfei Gao
2020-05-26 14:46 ` Christoph Hellwig
2020-05-26 15:09 ` Zhangfei Gao [this message]
2020-05-27 9:01 ` Greg Kroah-Hartman
2020-05-26 11:49 ` [PATCH 2/2] iommu: calling pci_fixup_iommu in iommu_fwspec_init Zhangfei Gao
2020-05-27 9:01 ` Greg Kroah-Hartman
2020-05-28 6:53 ` Zhangfei Gao
2020-05-27 9:00 ` [PATCH 0/2] Introduce PCI_FIXUP_IOMMU Greg Kroah-Hartman
2020-05-27 9:53 ` Arnd Bergmann
2020-05-27 13:51 ` Zhangfei Gao
2020-05-27 18:18 ` Bjorn Helgaas
2020-05-28 6:46 ` Zhangfei Gao
2020-05-28 7:33 ` Joerg Roedel
2020-06-01 17:41 ` Bjorn Helgaas
2020-06-04 13:33 ` Zhangfei Gao
2020-06-05 23:19 ` Bjorn Helgaas
2020-06-08 2:54 ` Zhangfei Gao
2020-06-08 16:41 ` Bjorn Helgaas
2020-06-09 4:01 ` Zhangfei Gao
2020-06-09 9:15 ` Arnd Bergmann
2020-06-09 16:49 ` Bjorn Helgaas
2020-06-11 2:54 ` Zhangfei Gao
2020-06-11 13:44 ` Bjorn Helgaas
2020-06-13 14:30 ` Zhangfei Gao
2020-06-15 23:52 ` Bjorn Helgaas
2020-06-19 2:26 ` Zhangfei Gao
2020-06-23 15:04 ` Bjorn Helgaas
2020-12-16 11:24 ` Zhou Wang
2020-12-17 20:38 ` Bjorn Helgaas
2021-01-12 6:49 ` [PATCH] PCI: Add a quirk to enable SVA for HiSilicon chip Zhangfei Gao
2021-01-12 17:02 ` Bjorn Helgaas
2021-01-13 12:05 ` Zhangfei Gao
2021-01-13 14:39 ` Jean-Philippe Brucker
2020-06-22 11:55 ` [PATCH 0/2] Introduce PCI_FIXUP_IOMMU Joerg Roedel
2020-06-23 7:48 ` Zhangfei Gao
2020-06-22 11:53 ` Joerg Roedel
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=39144dc0-3b04-3127-978b-bd8487dd06e0@linaro.org \
--to=zhangfei.gao@linaro.org \
--cc=arnd@arndb.de \
--cc=bhelgaas@google.com \
--cc=gregkh@linuxfoundation.org \
--cc=guohanjun@huawei.com \
--cc=hch@infradead.org \
--cc=herbert@gondor.apana.org.au \
--cc=iommu@lists.linux-foundation.org \
--cc=jean-philippe@linaro.org \
--cc=joro@8bytes.org \
--cc=kenneth-lee-2012@foxmail.com \
--cc=lenb@kernel.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
--cc=rjw@rjwysocki.net \
--cc=sudeep.holla@arm.com \
--cc=wangzhou1@hisilicon.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;
as well as URLs for NNTP newsgroup(s).