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From: Sinan Kaya <Okaya-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Jean-Philippe Brucker
	<jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>,
	will.deacon-5wv7dgnIgG8@public.gmane.org
Cc: zhongmiao-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.org,
	rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org,
	linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	sudeep.holla-5wv7dgnIgG8@public.gmane.org,
	robin.murphy-5wv7dgnIgG8@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	lenb-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Subject: Re: [PATCH 1/4] ACPI/IORT: Check ATS capability in root complex nodes
Date: Thu, 21 Mar 2019 12:00:14 -0400	[thread overview]
Message-ID: <fc53b2f7-53c4-c32d-8588-6f8d98ef5e7f@kernel.org> (raw)
In-Reply-To: <20190320173634.21895-2-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>

On 3/20/2019 1:36 PM, Jean-Philippe Brucker wrote:
>   		err = pci_for_each_dma_alias(to_pci_dev(dev),
>   					     iort_pci_iommu_init, &info);
> +
> +		if (!err && !iort_pci_rc_supports_ats(node))
> +			dev->iommu_fwspec->flags |= IOMMU_FWSPEC_PCI_NO_ATS;

Is it possible to remove !err check here. ATS supported is just a flag
in IORT table. Does this decision have to rely on having a correct dma
alias?

WARNING: multiple messages have this Message-ID (diff)
From: Sinan Kaya <Okaya@kernel.org>
To: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>,
	will.deacon@arm.com
Cc: lorenzo.pieralisi@arm.com, zhongmiao@hisilicon.com,
	joro@8bytes.org, rjw@rjwysocki.net, linux-acpi@vger.kernel.org,
	iommu@lists.linux-foundation.org, hanjun.guo@linaro.org,
	sudeep.holla@arm.com, robin.murphy@arm.com,
	linux-arm-kernel@lists.infradead.org, lenb@kernel.org
Subject: Re: [PATCH 1/4] ACPI/IORT: Check ATS capability in root complex nodes
Date: Thu, 21 Mar 2019 12:00:14 -0400	[thread overview]
Message-ID: <fc53b2f7-53c4-c32d-8588-6f8d98ef5e7f@kernel.org> (raw)
In-Reply-To: <20190320173634.21895-2-jean-philippe.brucker@arm.com>

On 3/20/2019 1:36 PM, Jean-Philippe Brucker wrote:
>   		err = pci_for_each_dma_alias(to_pci_dev(dev),
>   					     iort_pci_iommu_init, &info);
> +
> +		if (!err && !iort_pci_rc_supports_ats(node))
> +			dev->iommu_fwspec->flags |= IOMMU_FWSPEC_PCI_NO_ATS;

Is it possible to remove !err check here. ATS supported is just a flag
in IORT table. Does this decision have to rely on having a correct dma
alias?

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-03-21 16:00 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-20 17:36 [PATCH 0/4] Add PCI ATS support to Arm SMMUv3 Jean-Philippe Brucker
2019-03-20 17:36 ` Jean-Philippe Brucker
2019-03-20 17:36 ` [PATCH 1/4] ACPI/IORT: Check ATS capability in root complex nodes Jean-Philippe Brucker
2019-03-20 17:36   ` Jean-Philippe Brucker
     [not found]   ` <20190320173634.21895-2-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2019-03-21 16:00     ` Sinan Kaya [this message]
2019-03-21 16:00       ` Sinan Kaya
     [not found]       ` <fc53b2f7-53c4-c32d-8588-6f8d98ef5e7f-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2019-03-25 15:02         ` Jean-Philippe Brucker
2019-03-25 15:02           ` Jean-Philippe Brucker
2019-03-20 17:36 ` [PATCH 2/4] iommu/arm-smmu-v3: Link domains and devices Jean-Philippe Brucker
2019-03-20 17:36   ` Jean-Philippe Brucker
     [not found]   ` <20190320173634.21895-3-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2019-04-04 14:39     ` Will Deacon
2019-04-04 14:39       ` Will Deacon
2019-04-05 16:35       ` Jean-Philippe Brucker
2019-04-05 16:35         ` Jean-Philippe Brucker
2019-04-05 16:35         ` Jean-Philippe Brucker
2019-04-05 16:35         ` Jean-Philippe Brucker
2019-04-05 16:39         ` Will Deacon
2019-04-05 16:39           ` Will Deacon
2019-04-05 16:39           ` Will Deacon
2019-04-05 16:39           ` Will Deacon
2019-04-05 18:07           ` Jean-Philippe Brucker
2019-04-05 18:07             ` Jean-Philippe Brucker
2019-04-05 18:07             ` Jean-Philippe Brucker
2019-04-05 18:07             ` Jean-Philippe Brucker
2019-03-20 17:36 ` [PATCH 3/4] iommu/arm-smmu-v3: Add support for PCI ATS Jean-Philippe Brucker
2019-03-20 17:36   ` Jean-Philippe Brucker
     [not found]   ` <20190320173634.21895-4-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2019-03-21 15:52     ` Sinan Kaya
2019-03-21 15:52       ` Sinan Kaya
     [not found]       ` <6a4fb991-b8cd-d64d-25bd-dbbefcf69fa5-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2019-03-25 15:01         ` Jean-Philippe Brucker
2019-03-25 15:01           ` Jean-Philippe Brucker
2019-03-20 17:36 ` [PATCH 4/4] iommu/arm-smmu-v3: Disable tagged pointers Jean-Philippe Brucker
2019-03-20 17:36   ` Jean-Philippe Brucker

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