From: Joerg Roedel <joro@8bytes.org>
To: Zhangfei Gao <zhangfei.gao@linaro.org>
Cc: Bjorn Helgaas <helgaas@kernel.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-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org
Subject: Re: [PATCH 0/2] Introduce PCI_FIXUP_IOMMU
Date: Mon, 22 Jun 2020 13:55:37 +0200 [thread overview]
Message-ID: <20200622115536.GH3701@8bytes.org> (raw)
In-Reply-To: <779f4044-cf6a-b0d3-916f-0274450c07d3@linaro.org>
On Thu, Jun 04, 2020 at 09:33:07PM +0800, Zhangfei Gao wrote:
> +++ b/drivers/iommu/iommu.c
> @@ -2418,6 +2418,10 @@ int iommu_fwspec_init(struct device *dev, struct
> fwnode_handle *iommu_fwnode,
> fwspec->iommu_fwnode = iommu_fwnode;
> fwspec->ops = ops;
> dev_iommu_fwspec_set(dev, fwspec);
> +
> + if (dev_is_pci(dev))
> + pci_fixup_device(pci_fixup_final, to_pci_dev(dev));
> +
That's not going to fly, I don't think we should run the fixups twice,
and they should not be run from IOMMU code. Is the only reason for this
second pass that iommu_fwspec is not yet allocated when it runs the
first time? I ask because it might be easier to just allocate the struct
earlier then.
Regards,
Joerg
WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: Zhangfei Gao <zhangfei.gao@linaro.org>
Cc: jean-philippe <jean-philippe@linaro.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
Arnd Bergmann <arnd@arndb.de>,
linux-pci@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Hanjun Guo <guohanjun@huawei.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-acpi@vger.kernel.org, Bjorn Helgaas <helgaas@kernel.org>,
linux-crypto@vger.kernel.org, Sudeep Holla <sudeep.holla@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
kenneth-lee-2012@foxmail.com,
linux-arm-kernel@lists.infradead.org, Len Brown <lenb@kernel.org>
Subject: Re: [PATCH 0/2] Introduce PCI_FIXUP_IOMMU
Date: Mon, 22 Jun 2020 13:55:37 +0200 [thread overview]
Message-ID: <20200622115536.GH3701@8bytes.org> (raw)
In-Reply-To: <779f4044-cf6a-b0d3-916f-0274450c07d3@linaro.org>
On Thu, Jun 04, 2020 at 09:33:07PM +0800, Zhangfei Gao wrote:
> +++ b/drivers/iommu/iommu.c
> @@ -2418,6 +2418,10 @@ int iommu_fwspec_init(struct device *dev, struct
> fwnode_handle *iommu_fwnode,
> fwspec->iommu_fwnode = iommu_fwnode;
> fwspec->ops = ops;
> dev_iommu_fwspec_set(dev, fwspec);
> +
> + if (dev_is_pci(dev))
> + pci_fixup_device(pci_fixup_final, to_pci_dev(dev));
> +
That's not going to fly, I don't think we should run the fixups twice,
and they should not be run from IOMMU code. Is the only reason for this
second pass that iommu_fwspec is not yet allocated when it runs the
first time? I ask because it might be easier to just allocate the struct
earlier then.
Regards,
Joerg
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2020-06-22 11:55 UTC|newest]
Thread overview: 102+ 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 ` Zhangfei Gao
2020-05-26 11:49 ` Zhangfei Gao
2020-05-26 11:49 ` [PATCH 1/2] PCI: " Zhangfei Gao
2020-05-26 11:49 ` Zhangfei Gao
2020-05-26 11:49 ` Zhangfei Gao
2020-05-26 14:46 ` Christoph Hellwig
2020-05-26 14:46 ` Christoph Hellwig
2020-05-26 14:46 ` Christoph Hellwig
2020-05-26 15:09 ` Zhangfei Gao
2020-05-26 15:09 ` Zhangfei Gao
2020-05-26 15:09 ` Zhangfei Gao
2020-05-27 9:01 ` Greg Kroah-Hartman
2020-05-27 9:01 ` Greg Kroah-Hartman
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
2020-05-26 11:49 ` Zhangfei Gao
2020-05-26 11:49 ` Zhangfei Gao
2020-05-27 9:01 ` Greg Kroah-Hartman
2020-05-27 9:01 ` Greg Kroah-Hartman
2020-05-27 9:01 ` Greg Kroah-Hartman
2020-05-28 6:53 ` Zhangfei Gao
2020-05-28 6:53 ` Zhangfei Gao
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 9:00 ` Greg Kroah-Hartman
2020-05-27 9:00 ` Greg Kroah-Hartman
2020-05-27 9:53 ` Arnd Bergmann
2020-05-27 9:53 ` Arnd Bergmann
2020-05-27 9:53 ` Arnd Bergmann
2020-05-27 13:51 ` Zhangfei Gao
2020-05-27 13:51 ` Zhangfei Gao
2020-05-27 13:51 ` Zhangfei Gao
2020-05-27 18:18 ` Bjorn Helgaas
2020-05-27 18:18 ` Bjorn Helgaas
2020-05-27 18:18 ` Bjorn Helgaas
2020-05-28 6:46 ` Zhangfei Gao
2020-05-28 6:46 ` Zhangfei Gao
2020-05-28 6:46 ` Zhangfei Gao
2020-05-28 7:33 ` Joerg Roedel
2020-05-28 7:33 ` Joerg Roedel
2020-05-28 7:33 ` Joerg Roedel
2020-06-01 17:41 ` Bjorn Helgaas
2020-06-01 17:41 ` Bjorn Helgaas
2020-06-01 17:41 ` Bjorn Helgaas
2020-06-04 13:33 ` Zhangfei Gao
2020-06-04 13:33 ` Zhangfei Gao
2020-06-04 13:33 ` Zhangfei Gao
2020-06-05 23:19 ` Bjorn Helgaas
2020-06-05 23:19 ` Bjorn Helgaas
2020-06-05 23:19 ` Bjorn Helgaas
2020-06-08 2:54 ` Zhangfei Gao
2020-06-08 2:54 ` Zhangfei Gao
2020-06-08 2:54 ` Zhangfei Gao
2020-06-08 16:41 ` Bjorn Helgaas
2020-06-08 16:41 ` Bjorn Helgaas
2020-06-08 16:41 ` Bjorn Helgaas
2020-06-09 4:01 ` Zhangfei Gao
2020-06-09 4:01 ` Zhangfei Gao
2020-06-09 4:01 ` Zhangfei Gao
2020-06-09 9:15 ` Arnd Bergmann
2020-06-09 9:15 ` Arnd Bergmann
2020-06-09 9:15 ` Arnd Bergmann
2020-06-09 16:49 ` Bjorn Helgaas
2020-06-09 16:49 ` Bjorn Helgaas
2020-06-09 16:49 ` Bjorn Helgaas
2020-06-11 2:54 ` Zhangfei Gao
2020-06-11 2:54 ` Zhangfei Gao
2020-06-11 2:54 ` Zhangfei Gao
2020-06-11 13:44 ` Bjorn Helgaas
2020-06-11 13:44 ` Bjorn Helgaas
2020-06-11 13:44 ` Bjorn Helgaas
2020-06-13 14:30 ` Zhangfei Gao
2020-06-13 14:30 ` Zhangfei Gao
2020-06-13 14:30 ` Zhangfei Gao
2020-06-15 23:52 ` Bjorn Helgaas
2020-06-15 23:52 ` Bjorn Helgaas
2020-06-15 23:52 ` Bjorn Helgaas
2020-06-19 2:26 ` Zhangfei Gao
2020-06-19 2:26 ` Zhangfei Gao
2020-06-19 2:26 ` Zhangfei Gao
2020-06-23 15:04 ` Bjorn Helgaas
2020-06-23 15:04 ` Bjorn Helgaas
2020-06-23 15:04 ` Bjorn Helgaas
2020-12-16 11:24 ` Zhou Wang
2020-12-16 11:24 ` Zhou Wang
2020-12-16 11:24 ` Zhou Wang
2020-12-17 20:38 ` Bjorn Helgaas
2020-12-17 20:38 ` Bjorn Helgaas
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
2021-01-12 7:05 ` [PATCH 0/2] Introduce PCI_FIXUP_IOMMU zhangfei.gao
2021-01-12 7:05 ` zhangfei.gao
2020-06-22 11:55 ` Joerg Roedel [this message]
2020-06-22 11:55 ` Joerg Roedel
2020-06-23 7:48 ` Zhangfei Gao
2020-06-23 7:48 ` Zhangfei Gao
2020-06-22 11:53 ` Joerg Roedel
2020-06-22 11:53 ` Joerg Roedel
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