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
prev parent 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]
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