From: "Jacob Pan (Jun)" <jacob.jun.pan@intel.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
kevin.tian@intel.com, "Rothman,
Michael A" <michael.a.rothman@intel.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
linux-pci@vger.kernel.org, jasowang@redhat.com, "Kaneda,
Erik" <erik.kaneda@intel.com>,
virtualization@lists.linux-foundation.org,
iommu@lists.linux-foundation.org, sebastien.boeuf@intel.com,
jacob.jun.pan@intel.com, bhelgaas@google.com,
robin.murphy@arm.com
Subject: Re: [PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space
Date: Wed, 4 Mar 2020 13:37:44 -0800 [thread overview]
Message-ID: <20200304133744.00000fdb@intel.com> (raw)
In-Reply-To: <20200304174045.GC3315@8bytes.org>
On Wed, 4 Mar 2020 18:40:46 +0100
Joerg Roedel <joro@8bytes.org> wrote:
> On Wed, Mar 04, 2020 at 04:38:21PM +0100, Jean-Philippe Brucker wrote:
> > I agree with this. The problem is I don't know how to get a new
> > ACPI table or change an existing one. It needs to go through the
> > UEFI forum in order to be accepted, and I don't have any weight
> > there. I've been trying to get the tiny change into IORT for ages.
> > I haven't been given any convincing reason against it or offered
> > any alternative, it's just stalled. The topology description
> > introduced here wasn't my first choice either but unless someone
> > can help finding another way into ACPI, I don't have a better
> > idea.
>
> A quote from the ACPI Specification (Version 6.3, Section 5.2.6,
> Page 119):
>
> Table signatures will be reserved by the ACPI promoters and
> posted independently of this specification in ACPI errata and
> clarification documents on the ACPI web site. Requests to
> reserve a 4-byte alphanumeric table signature should be sent
> to the email address info@acpi.info and should include the purpose
> of the table and reference URL to a document that describes
> the table format. Tables defined outside of the ACPI specification
> may define data value encodings in either little endian or big
> endian format. For the purpose of clarity, external table
> definition documents should include the endian-ness of their
> data value encodings.
>
> So it sounds like you need to specifiy the table format and send a
> request to info@acpi.info to get a table signature for it.
>
+ Mike and Erik who work closely on UEFI and ACPICA.
Copy paste Erik's initial response below on how to get a new table,
seems to confirm with the process you stated above.
"Fairly easy. You reserve a 4-letter symbol by sending a message
requesting to reserve the signature to Mike or the ASWG mailing list or
info@acpi.info
There is also another option. You can have ASWG own this new table so
that not one entity or company owns the new table."
> Regards,
>
> Joerg
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: "Jacob Pan (Jun)" <jacob.jun.pan@intel.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Auger Eric <eric.auger@redhat.com>,
<iommu@lists.linux-foundation.org>,
<virtualization@lists.linux-foundation.org>,
<linux-pci@vger.kernel.org>, <bhelgaas@google.com>,
<jasowang@redhat.com>, <kevin.tian@intel.com>,
<sebastien.boeuf@intel.com>, <robin.murphy@arm.com>,
jacob.jun.pan@intel.com, "Kaneda, Erik" <erik.kaneda@intel.com>,
"Rothman, Michael A" <michael.a.rothman@intel.com>
Subject: Re: [PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space
Date: Wed, 4 Mar 2020 13:37:44 -0800 [thread overview]
Message-ID: <20200304133744.00000fdb@intel.com> (raw)
In-Reply-To: <20200304174045.GC3315@8bytes.org>
On Wed, 4 Mar 2020 18:40:46 +0100
Joerg Roedel <joro@8bytes.org> wrote:
> On Wed, Mar 04, 2020 at 04:38:21PM +0100, Jean-Philippe Brucker wrote:
> > I agree with this. The problem is I don't know how to get a new
> > ACPI table or change an existing one. It needs to go through the
> > UEFI forum in order to be accepted, and I don't have any weight
> > there. I've been trying to get the tiny change into IORT for ages.
> > I haven't been given any convincing reason against it or offered
> > any alternative, it's just stalled. The topology description
> > introduced here wasn't my first choice either but unless someone
> > can help finding another way into ACPI, I don't have a better
> > idea.
>
> A quote from the ACPI Specification (Version 6.3, Section 5.2.6,
> Page 119):
>
> Table signatures will be reserved by the ACPI promoters and
> posted independently of this specification in ACPI errata and
> clarification documents on the ACPI web site. Requests to
> reserve a 4-byte alphanumeric table signature should be sent
> to the email address info@acpi.info and should include the purpose
> of the table and reference URL to a document that describes
> the table format. Tables defined outside of the ACPI specification
> may define data value encodings in either little endian or big
> endian format. For the purpose of clarity, external table
> definition documents should include the endian-ness of their
> data value encodings.
>
> So it sounds like you need to specifiy the table format and send a
> request to info@acpi.info to get a table signature for it.
>
+ Mike and Erik who work closely on UEFI and ACPICA.
Copy paste Erik's initial response below on how to get a new table,
seems to confirm with the process you stated above.
"Fairly easy. You reserve a 4-letter symbol by sending a message
requesting to reserve the signature to Mike or the ASWG mailing list or
info@acpi.info
There is also another option. You can have ASWG own this new table so
that not one entity or company owns the new table."
> Regards,
>
> Joerg
WARNING: multiple messages have this Message-ID (diff)
From: "Jacob Pan (Jun)" <jacob.jun.pan@intel.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Auger Eric <eric.auger@redhat.com>,
iommu@lists.linux-foundation.org,
virtualization@lists.linux-foundation.org,
linux-pci@vger.kernel.org, bhelgaas@google.com,
jasowang@redhat.com, kevin.tian@intel.com,
sebastien.boeuf@intel.com, robin.murphy@arm.com,
jacob.jun.pan@intel.com, "Kaneda, Erik" <erik.kaneda@intel.com>,
"Rothman, Michael A" <michael.a.rothman@intel.com>
Subject: Re: [PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space
Date: Wed, 4 Mar 2020 13:37:44 -0800 [thread overview]
Message-ID: <20200304133744.00000fdb@intel.com> (raw)
In-Reply-To: <20200304174045.GC3315@8bytes.org>
On Wed, 4 Mar 2020 18:40:46 +0100
Joerg Roedel <joro@8bytes.org> wrote:
> On Wed, Mar 04, 2020 at 04:38:21PM +0100, Jean-Philippe Brucker wrote:
> > I agree with this. The problem is I don't know how to get a new
> > ACPI table or change an existing one. It needs to go through the
> > UEFI forum in order to be accepted, and I don't have any weight
> > there. I've been trying to get the tiny change into IORT for ages.
> > I haven't been given any convincing reason against it or offered
> > any alternative, it's just stalled. The topology description
> > introduced here wasn't my first choice either but unless someone
> > can help finding another way into ACPI, I don't have a better
> > idea.
>
> A quote from the ACPI Specification (Version 6.3, Section 5.2.6,
> Page 119):
>
> Table signatures will be reserved by the ACPI promoters and
> posted independently of this specification in ACPI errata and
> clarification documents on the ACPI web site. Requests to
> reserve a 4-byte alphanumeric table signature should be sent
> to the email address info@acpi.info and should include the purpose
> of the table and reference URL to a document that describes
> the table format. Tables defined outside of the ACPI specification
> may define data value encodings in either little endian or big
> endian format. For the purpose of clarity, external table
> definition documents should include the endian-ness of their
> data value encodings.
>
> So it sounds like you need to specifiy the table format and send a
> request to info@acpi.info to get a table signature for it.
>
+ Mike and Erik who work closely on UEFI and ACPICA.
Copy paste Erik's initial response below on how to get a new table,
seems to confirm with the process you stated above.
"Fairly easy. You reserve a 4-letter symbol by sending a message
requesting to reserve the signature to Mike or the ASWG mailing list or
info@acpi.info
There is also another option. You can have ASWG own this new table so
that not one entity or company owns the new table."
> Regards,
>
> Joerg
next prev parent reply other threads:[~2020-03-04 21:37 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-28 17:25 [PATCH v2 0/3] virtio-iommu on x86 and non-devicetree platforms Jean-Philippe Brucker
2020-02-28 17:25 ` Jean-Philippe Brucker
2020-02-28 17:25 ` [PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space Jean-Philippe Brucker
2020-02-28 17:25 ` Jean-Philippe Brucker
2020-03-01 11:17 ` Michael S. Tsirkin
2020-03-01 11:17 ` Michael S. Tsirkin
2020-03-02 16:16 ` Joerg Roedel
2020-03-02 16:16 ` Joerg Roedel
2020-03-03 10:19 ` Auger Eric
2020-03-03 10:19 ` Auger Eric
2020-03-03 13:01 ` Joerg Roedel
2020-03-03 13:01 ` Joerg Roedel
2020-03-03 14:00 ` Michael S. Tsirkin
2020-03-03 14:00 ` Michael S. Tsirkin
2020-03-03 15:53 ` Joerg Roedel
2020-03-03 15:53 ` Joerg Roedel
2020-03-03 16:09 ` Michael S. Tsirkin
2020-03-03 16:09 ` Michael S. Tsirkin
2020-03-03 16:21 ` Auger Eric
2020-03-03 16:21 ` Auger Eric
2020-03-04 13:37 ` Joerg Roedel
2020-03-04 13:37 ` Joerg Roedel
2020-03-04 15:38 ` Jean-Philippe Brucker
2020-03-04 15:38 ` Jean-Philippe Brucker
2020-03-04 17:40 ` Joerg Roedel
2020-03-04 17:40 ` Joerg Roedel
2020-03-04 21:37 ` Jacob Pan (Jun) [this message]
2020-03-04 21:37 ` Jacob Pan (Jun)
2020-03-04 21:37 ` Jacob Pan (Jun)
2020-03-04 21:54 ` Joerg Roedel
2020-03-04 21:54 ` Joerg Roedel
2020-03-05 15:42 ` Michael S. Tsirkin
2020-03-05 15:42 ` Michael S. Tsirkin
2020-03-04 15:48 ` Jacob Pan
2020-03-04 15:48 ` Jacob Pan
2020-03-04 17:34 ` Joerg Roedel
2020-03-04 17:34 ` Joerg Roedel
2020-03-04 19:34 ` Michael S. Tsirkin
2020-03-04 19:34 ` Michael S. Tsirkin
2020-03-04 21:50 ` Joerg Roedel
2020-03-04 21:50 ` Joerg Roedel
2020-03-05 15:39 ` Michael S. Tsirkin
2020-03-05 15:39 ` Michael S. Tsirkin
2020-03-03 14:02 ` Michael S. Tsirkin
2020-03-03 14:02 ` Michael S. Tsirkin
2020-03-03 14:02 ` Michael S. Tsirkin
2020-03-05 8:07 ` Tian, Kevin
2020-03-05 8:07 ` Tian, Kevin
2020-03-11 17:48 ` Jean-Philippe Brucker
2020-03-11 17:48 ` Jean-Philippe Brucker
2020-03-11 21:48 ` Michael S. Tsirkin
2020-03-11 21:48 ` Michael S. Tsirkin
2020-04-13 13:22 ` Michael S. Tsirkin
2020-04-13 13:22 ` Michael S. Tsirkin
2020-04-21 7:31 ` Tian, Kevin
2020-04-21 7:31 ` Tian, Kevin
2020-08-21 8:39 ` Jean-Philippe Brucker
2020-08-21 8:39 ` Jean-Philippe Brucker
2020-08-21 8:39 ` Jean-Philippe Brucker
2020-02-28 17:25 ` [PATCH v2 2/3] PCI: Add DMA configuration for virtual platforms Jean-Philippe Brucker
2020-02-28 17:25 ` Jean-Philippe Brucker
2020-03-18 21:10 ` Bjorn Helgaas
2020-03-18 21:10 ` Bjorn Helgaas
2020-02-28 17:25 ` [PATCH v2 3/3] iommu/virtio: Enable x86 support Jean-Philippe Brucker
2020-02-28 17:25 ` Jean-Philippe Brucker
2020-02-29 14:23 ` kbuild test robot
2020-02-29 14:23 ` kbuild test robot
2020-02-29 14:23 ` kbuild test robot
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