public inbox for devel@edk2.groups.io
 help / color / mirror / Atom feed
From: "Jiahui Cen" <cenjiahui@huawei.com>
To: <devel@edk2.groups.io>, <lersek@redhat.com>,
	Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: <jordan.l.justen@intel.com>, <leif@nuviainc.com>,
	<xieyingtai@huawei.com>, <miaoyubo@huawei.com>
Subject: Re: [edk2-devel] [PATCH v2 0/4] Add extra pci roots support for Arm
Date: Mon, 16 Nov 2020 09:33:21 +0800	[thread overview]
Message-ID: <0575acab-fb25-9805-8735-f85f57d8764a@huawei.com> (raw)
In-Reply-To: <286c4d14-82f4-6238-2fb1-15e6072fad07@redhat.com>



On 2020/11/14 3:44, Laszlo Ersek wrote:
> On 11/12/20 09:49, Ard Biesheuvel wrote:
>> On 11/9/20 2:05 PM, Jiahui Cen wrote:
>>> Changes with v1
>>> v1->v2:
>>> Separated into four patches.
>>> Factor the same logic parts into a new library.
>>>
>>> v1: https://edk2.groups.io/g/devel/topic/72723351#56901
>>> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3059
>>> QEMU:
>>> https://lore.kernel.org/qemu-devel/20201103120157.2286-1-cenjiahui@huawei.com/
>>>
>>>
>>> This patch series adds support for extra pci roots for ARM.
>>>
>>
>> Why?
> 
> I don't know Jiahui Cen's particular reasons; on x86, pxb-pcie is useful
> for associating PCIe hierarchies with particular NUMA nodes. See
> "docs/pci_expander_bridge.txt" in the QEMU tree.
> 
> Also, in Jiahui Cen's QEMU blurb linked above, the following is included:
> 
>> Currently pxb-pcie is not supported by arm,
>> the reason for it is pxb-pcie is not described in DSDT table
>> and only one main host bridge is described in acpi tables,
>> which means it is not impossible to present different io numas
>> for different devices.
> 
> So I guess this work aims to extend the same PCI(e)<->NUMA association
> feature, from x86 to ARM.
> > Thanks,
> Laszlo
> 
> 
> .
> 

Right, we'd like to extend the pxb-pcie feature on ARM so that PCI(e)
can be associated with particular NUMA nodes.

Thanks,
Jiahui

      reply	other threads:[~2020-11-16  1:33 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-09 13:05 [PATCH v2 0/4] Add extra pci roots support for Arm Jiahui Cen
2020-11-09 13:05 ` [PATCH v2 1/4] OvmfPkg: Extract functions form PciHostBridgeLib Jiahui Cen
2020-11-11 16:45   ` Laszlo Ersek
2020-11-12  3:21     ` Jiahui Cen
2020-11-09 13:05 ` [PATCH v2 2/4] ArmVirtPkg: Use extracted PciHostBridgeUtilityLib Jiahui Cen
2020-11-11 17:27   ` Laszlo Ersek
2020-11-12  3:30     ` [edk2-devel] " Jiahui Cen
2020-11-09 13:05 ` [PATCH v2 3/4] OvmfPkg: Extract functions of extra pci roots Jiahui Cen
2020-11-09 13:05 ` [PATCH v2 4/4] ArmVirtPkg: Support " Jiahui Cen
2020-11-11 14:33 ` [PATCH v2 0/4] Add extra pci roots support for Arm Laszlo Ersek
2020-11-12  3:20   ` [edk2-devel] " Jiahui Cen
2020-12-04  6:48   ` Jiahui Cen
2020-12-04 15:08     ` Laszlo Ersek
2020-12-11 10:57     ` Ni, Ray
2020-12-15 12:52       ` Jiahui Cen
2020-12-17 13:23         ` Laszlo Ersek
2020-12-17 13:37           ` Ard Biesheuvel
2020-12-17 14:42             ` Jonathan Cameron
2020-12-17 13:52           ` Jiahui Cen
2020-11-12  8:49 ` Ard Biesheuvel
2020-11-13 19:44   ` Laszlo Ersek
2020-11-16  1:33     ` Jiahui Cen [this message]

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-list 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=0575acab-fb25-9805-8735-f85f57d8764a@huawei.com \
    --to=devel@edk2.groups.io \
    /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