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Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】
From: |
Alex Williamson |
Subject: |
Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】 |
Date: |
Tue, 8 Aug 2017 10:53:49 -0600 |
On Tue, 8 Aug 2017 09:44:56 +0800
Bob Chen <address@hidden> wrote:
> 1. How to test the KVM exit rate?
You can use tracing: http://www.linux-kvm.org/page/Tracing
> 2. The switches are separate devices of PLX Technology
>
> # lspci -s 07:08.0 -nn
> 07:08.0 PCI bridge [0604]: PLX Technology, Inc. PEX 8747 48-Lane, 5-Port
> PCI Express Gen 3 (8.0 GT/s) Switch [10b5:8747] (rev ca)
>
> # This is one of the Root Ports in the system.
> [0000:00]-+-00.0 Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D
> DMI2
> +-01.0-[01]----00.0 LSI Logic / Symbios Logic MegaRAID SAS
> 2208 [Thunderbolt]
> +-02.0-[02-05]--
> +-03.0-[06-09]----00.0-[07-09]--+-08.0-[08]--+-00.0 NVIDIA
> Corporation GP102 [TITAN Xp]
> | | \-00.1 NVIDIA
> Corporation GP102 HDMI Audio Controller
> | \-10.0-[09]--+-00.0 NVIDIA
> Corporation GP102 [TITAN Xp]
> | \-00.1 NVIDIA
> Corporation GP102 HDMI Audio Controller
>
>
>
>
> 3. ACS
>
> It seemed that I had misunderstood your point? I finally found ACS
> information on switches, not on GPUs.
>
> Capabilities: [f24 v1] Access Control Services
> ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl+
> DirectTrans+
> ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl-
> DirectTrans-
Yes, NVIDIA uses the same PLX PEX 8747 on the switches on the cards I
have access to. Unfortunately the endpoints in my case do not support
ATS, so the endpoint cannot generate a pre-translated address that
would take advantage of the DT capability on the switch port if we were
to enable it. Thanks,
Alex
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/01
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Alex Williamson, 2017/08/01
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/01
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Michael S. Tsirkin, 2017/08/01
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Alex Williamson, 2017/08/01
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/07
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Alex Williamson, 2017/08/07
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/07
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/08
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】,
Alex Williamson <=
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Michael S. Tsirkin, 2017/08/08
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/22
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Alex Williamson, 2017/08/22
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Michael S. Tsirkin, 2017/08/22
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/29
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Alex Williamson, 2017/08/29
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/30
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Alex Williamson, 2017/08/30
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Bob Chen, 2017/08/07
- Re: [Qemu-devel] About virtio device hotplug in Q35! 【外域邮件.谨慎查阅】, Alex Williamson, 2017/08/07