From: Robin Murphy <robin.murphy@arm.com>
To: Jon Nettleton <jon@solid-run.com>
Cc: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux IOMMU <iommu@lists.linux-foundation.org>,
Linuxarm <linuxarm@huawei.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
wanghuiqiang <wanghuiqiang@huawei.com>,
Hanjun Guo <guohanjun@huawei.com>,
Steven Price <steven.price@arm.com>,
Sami Mujawar <Sami.Mujawar@arm.com>,
Eric Auger <eric.auger@redhat.com>,
yangyicong <yangyicong@huawei.com>
Subject: Re: [PATCH v7 9/9] iommu/dma: Reserve any RMR regions associated with a dev
Date: Mon, 11 Oct 2021 16:00:48 +0100 [thread overview]
Message-ID: <706e2dc8-37af-2344-0d99-6da1f27ba0fb@arm.com> (raw)
In-Reply-To: <CABdtJHv+SZ15RcBaFt0w4iTsMMbAjGB2Wm4GST3cNw+2Q=OeVw@mail.gmail.com>
On 2021-10-09 08:07, Jon Nettleton wrote:
> On Fri, Oct 8, 2021 at 3:10 PM Robin Murphy <robin.murphy@arm.com> wrote:
>>
>> On 2021-08-05 09:07, Shameer Kolothum wrote:
>>> Get ACPI IORT RMR regions associated with a dev reserved
>>> so that there is a unity mapping for them in SMMU.
>>
>> This feels like most of it belongs in the IORT code rather than
>> iommu-dma (which should save the temporary list copy as well).
>
> See previous comment. The original intent was for device-tree to also
> be able to use these mechanisms to create RMR's and support them
> in the SMMU.
Can you clarify how code behind an "if (!is_of_node(...))" check
alongside other IORT-specific code is expected to be useful for DT?
Yes, iommu_dma_get_resv_regions() itself wants to end up serving as an
abstraction layer, but that still doesn't mean it has to do much more
than dispatch into firmware-specific backends as appropriate.
Robin.
WARNING: multiple messages have this Message-ID (diff)
From: Robin Murphy <robin.murphy@arm.com>
To: Jon Nettleton <jon@solid-run.com>
Cc: Linuxarm <linuxarm@huawei.com>,
Steven Price <steven.price@arm.com>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux IOMMU <iommu@lists.linux-foundation.org>,
wanghuiqiang <wanghuiqiang@huawei.com>,
Hanjun Guo <guohanjun@huawei.com>,
yangyicong <yangyicong@huawei.com>,
Sami Mujawar <Sami.Mujawar@arm.com>,
Will Deacon <will@kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v7 9/9] iommu/dma: Reserve any RMR regions associated with a dev
Date: Mon, 11 Oct 2021 16:00:48 +0100 [thread overview]
Message-ID: <706e2dc8-37af-2344-0d99-6da1f27ba0fb@arm.com> (raw)
In-Reply-To: <CABdtJHv+SZ15RcBaFt0w4iTsMMbAjGB2Wm4GST3cNw+2Q=OeVw@mail.gmail.com>
On 2021-10-09 08:07, Jon Nettleton wrote:
> On Fri, Oct 8, 2021 at 3:10 PM Robin Murphy <robin.murphy@arm.com> wrote:
>>
>> On 2021-08-05 09:07, Shameer Kolothum wrote:
>>> Get ACPI IORT RMR regions associated with a dev reserved
>>> so that there is a unity mapping for them in SMMU.
>>
>> This feels like most of it belongs in the IORT code rather than
>> iommu-dma (which should save the temporary list copy as well).
>
> See previous comment. The original intent was for device-tree to also
> be able to use these mechanisms to create RMR's and support them
> in the SMMU.
Can you clarify how code behind an "if (!is_of_node(...))" check
alongside other IORT-specific code is expected to be useful for DT?
Yes, iommu_dma_get_resv_regions() itself wants to end up serving as an
abstraction layer, but that still doesn't mean it has to do much more
than dispatch into firmware-specific backends as appropriate.
Robin.
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Robin Murphy <robin.murphy@arm.com>
To: Jon Nettleton <jon@solid-run.com>
Cc: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux IOMMU <iommu@lists.linux-foundation.org>,
Linuxarm <linuxarm@huawei.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
wanghuiqiang <wanghuiqiang@huawei.com>,
Hanjun Guo <guohanjun@huawei.com>,
Steven Price <steven.price@arm.com>,
Sami Mujawar <Sami.Mujawar@arm.com>,
Eric Auger <eric.auger@redhat.com>,
yangyicong <yangyicong@huawei.com>
Subject: Re: [PATCH v7 9/9] iommu/dma: Reserve any RMR regions associated with a dev
Date: Mon, 11 Oct 2021 16:00:48 +0100 [thread overview]
Message-ID: <706e2dc8-37af-2344-0d99-6da1f27ba0fb@arm.com> (raw)
In-Reply-To: <CABdtJHv+SZ15RcBaFt0w4iTsMMbAjGB2Wm4GST3cNw+2Q=OeVw@mail.gmail.com>
On 2021-10-09 08:07, Jon Nettleton wrote:
> On Fri, Oct 8, 2021 at 3:10 PM Robin Murphy <robin.murphy@arm.com> wrote:
>>
>> On 2021-08-05 09:07, Shameer Kolothum wrote:
>>> Get ACPI IORT RMR regions associated with a dev reserved
>>> so that there is a unity mapping for them in SMMU.
>>
>> This feels like most of it belongs in the IORT code rather than
>> iommu-dma (which should save the temporary list copy as well).
>
> See previous comment. The original intent was for device-tree to also
> be able to use these mechanisms to create RMR's and support them
> in the SMMU.
Can you clarify how code behind an "if (!is_of_node(...))" check
alongside other IORT-specific code is expected to be useful for DT?
Yes, iommu_dma_get_resv_regions() itself wants to end up serving as an
abstraction layer, but that still doesn't mean it has to do much more
than dispatch into firmware-specific backends as appropriate.
Robin.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-10-11 15:00 UTC|newest]
Thread overview: 150+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-05 8:07 [PATCH v7 0/9] ACPI/IORT: Support for IORT RMR node Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` [PATCH v7 1/9] iommu: Introduce a union to struct iommu_resv_region Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-20 10:22 ` Steven Price
2021-08-20 10:22 ` Steven Price
2021-08-20 10:22 ` Steven Price
2021-10-08 12:14 ` Robin Murphy
2021-10-08 12:14 ` Robin Murphy
2021-10-08 12:14 ` Robin Murphy
2021-10-09 6:57 ` Jon Nettleton
2021-10-09 6:57 ` Jon Nettleton
2021-10-09 6:57 ` Jon Nettleton
2021-10-11 5:47 ` Shameerali Kolothum Thodi
2021-10-11 5:47 ` Shameerali Kolothum Thodi
2021-10-11 5:47 ` Shameerali Kolothum Thodi
2021-10-11 13:47 ` Robin Murphy
2021-10-11 13:47 ` Robin Murphy
2021-10-11 13:47 ` Robin Murphy
2021-08-05 8:07 ` [PATCH v7 2/9] ACPI/IORT: Add support for RMR node parsing Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 16:03 ` Lorenzo Pieralisi
2021-08-05 16:03 ` Lorenzo Pieralisi
2021-08-05 16:03 ` Lorenzo Pieralisi
2021-08-05 16:31 ` Jon Nettleton
2021-08-05 16:31 ` Jon Nettleton
2021-08-05 16:31 ` Jon Nettleton
2021-08-05 18:37 ` Laurentiu Tudor
2021-08-05 18:37 ` Laurentiu Tudor
2021-08-05 18:37 ` Laurentiu Tudor
2021-09-06 17:44 ` Robin Murphy
2021-09-06 17:44 ` Robin Murphy
2021-09-06 17:44 ` Robin Murphy
2021-09-06 19:51 ` Jon Nettleton
2021-09-06 19:51 ` Jon Nettleton
2021-09-06 19:51 ` Jon Nettleton
2021-09-16 7:26 ` Shameerali Kolothum Thodi
2021-09-16 7:26 ` Shameerali Kolothum Thodi
2021-09-16 7:26 ` Shameerali Kolothum Thodi
2021-09-16 7:52 ` Jon Nettleton
2021-09-16 7:52 ` Jon Nettleton
2021-09-16 7:52 ` Jon Nettleton
2021-09-16 8:26 ` Shameerali Kolothum Thodi
2021-09-16 8:26 ` Shameerali Kolothum Thodi
2021-09-16 8:26 ` Shameerali Kolothum Thodi
2021-09-16 11:16 ` Jon Nettleton
2021-09-16 11:16 ` Jon Nettleton
2021-09-16 11:16 ` Jon Nettleton
2021-09-17 11:26 ` Shameerali Kolothum Thodi
2021-09-17 11:26 ` Shameerali Kolothum Thodi
2021-09-17 11:26 ` Shameerali Kolothum Thodi
2021-10-05 10:53 ` Laurentiu Tudor
2021-10-05 10:53 ` Laurentiu Tudor
2021-10-05 10:53 ` Laurentiu Tudor
2021-10-08 12:48 ` Robin Murphy
2021-10-08 12:48 ` Robin Murphy
2021-10-08 12:48 ` Robin Murphy
2021-10-09 7:06 ` Jon Nettleton
2021-10-09 7:06 ` Jon Nettleton
2021-10-09 7:06 ` Jon Nettleton
2021-10-11 14:04 ` Robin Murphy
2021-10-11 14:04 ` Robin Murphy
2021-10-11 14:04 ` Robin Murphy
2021-10-12 8:00 ` Jon Nettleton
2021-10-12 8:00 ` Jon Nettleton
2021-10-12 8:00 ` Jon Nettleton
2021-12-08 12:18 ` Lorenzo Pieralisi
2021-12-08 12:18 ` Lorenzo Pieralisi
2021-12-08 12:18 ` Lorenzo Pieralisi
2021-12-08 13:26 ` Jon Nettleton
2021-12-08 13:26 ` Jon Nettleton
2021-12-08 13:26 ` Jon Nettleton
2021-12-08 14:37 ` Robin Murphy
2021-12-08 14:37 ` Robin Murphy
2021-12-08 14:37 ` Robin Murphy
2021-12-08 15:11 ` Jon Nettleton
2021-12-08 15:11 ` Jon Nettleton
2021-12-08 15:11 ` Jon Nettleton
2021-10-11 5:59 ` Shameerali Kolothum Thodi
2021-10-11 5:59 ` Shameerali Kolothum Thodi
2021-10-11 5:59 ` Shameerali Kolothum Thodi
2021-08-05 8:07 ` [PATCH v7 3/9] iommu/dma: Introduce generic helper to retrieve RMR info Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-10-08 13:03 ` Robin Murphy
2021-10-08 13:03 ` Robin Murphy
2021-10-08 13:03 ` Robin Murphy
2021-10-11 5:51 ` Shameerali Kolothum Thodi
2021-10-11 5:51 ` Shameerali Kolothum Thodi
2021-10-11 5:51 ` Shameerali Kolothum Thodi
2021-08-05 8:07 ` [PATCH v7 4/9] ACPI/IORT: Add a helper to retrieve RMR memory regions Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 15:43 ` Lorenzo Pieralisi
2021-08-05 15:43 ` Lorenzo Pieralisi
2021-08-05 15:43 ` Lorenzo Pieralisi
2021-08-05 8:07 ` [PATCH v7 5/9] iommu/arm-smmu-v3: Introduce strtab init helper Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` [PATCH v7 6/9] iommu/arm-smmu-v3: Refactor arm_smmu_init_bypass_stes() to force bypass Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` [PATCH v7 7/9] iommu/arm-smmu-v3: Get associated RMR info and install bypass STE Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` [PATCH v7 8/9] iommu/arm-smmu: Get associated RMR info and install bypass SMR Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` [PATCH v7 9/9] iommu/dma: Reserve any RMR regions associated with a dev Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-08-05 8:07 ` Shameer Kolothum
2021-10-08 13:09 ` Robin Murphy
2021-10-08 13:09 ` Robin Murphy
2021-10-08 13:09 ` Robin Murphy
2021-10-09 7:07 ` Jon Nettleton
2021-10-09 7:07 ` Jon Nettleton
2021-10-09 7:07 ` Jon Nettleton
2021-10-11 15:00 ` Robin Murphy [this message]
2021-10-11 15:00 ` Robin Murphy
2021-10-11 15:00 ` Robin Murphy
2021-10-11 15:42 ` Shameerali Kolothum Thodi
2021-10-11 15:42 ` Shameerali Kolothum Thodi
2021-10-11 15:42 ` Shameerali Kolothum Thodi
2021-08-05 13:22 ` [PATCH v7 0/9] ACPI/IORT: Support for IORT RMR node Ard Biesheuvel
2021-08-05 13:22 ` Ard Biesheuvel
2021-08-05 13:22 ` Ard Biesheuvel
2021-08-05 13:35 ` Shameerali Kolothum Thodi
2021-08-05 13:35 ` Shameerali Kolothum Thodi
2021-08-05 13:35 ` Shameerali Kolothum Thodi
2021-08-05 14:09 ` Ard Biesheuvel
2021-08-05 14:09 ` Ard Biesheuvel
2021-08-05 14:09 ` Ard Biesheuvel
2021-08-31 5:06 ` Jon Nettleton
2021-08-31 5:06 ` Jon Nettleton
2021-08-31 5:06 ` Jon Nettleton
2021-09-30 9:47 ` Eric Auger
2021-09-30 9:47 ` Eric Auger
2021-09-30 9:47 ` Eric Auger
2021-09-30 10:50 ` Shameerali Kolothum Thodi
2021-09-30 10:50 ` Shameerali Kolothum Thodi
2021-09-30 10:50 ` Shameerali Kolothum Thodi
2022-01-25 13:00 ` Shameerali Kolothum Thodi via iommu
2022-01-25 13:00 ` Shameerali Kolothum Thodi
2022-01-25 13:00 ` Shameerali Kolothum Thodi
2022-01-25 19:30 ` Robin Murphy
2022-01-25 19:30 ` Robin Murphy
2022-01-25 19:30 ` Robin Murphy
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=706e2dc8-37af-2344-0d99-6da1f27ba0fb@arm.com \
--to=robin.murphy@arm.com \
--cc=Sami.Mujawar@arm.com \
--cc=eric.auger@redhat.com \
--cc=guohanjun@huawei.com \
--cc=iommu@lists.linux-foundation.org \
--cc=jon@solid-run.com \
--cc=joro@8bytes.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linuxarm@huawei.com \
--cc=lorenzo.pieralisi@arm.com \
--cc=shameerali.kolothum.thodi@huawei.com \
--cc=steven.price@arm.com \
--cc=wanghuiqiang@huawei.com \
--cc=will@kernel.org \
--cc=yangyicong@huawei.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.