Re: help

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

Looking at your DomU configuration (dom1.cfg), you are missing the
following line which is necessary for a correct SMMU setup:

dtdev = [ "/amba/ethernet@ff0e0000" ]

See the following docs with longer explanations:


https://xenbits.xenproject.org/docs/unstable/misc/arm/passthrough.txt

https://xilinx-wiki.atlassian.net/wiki/spaces/XWUC/pages/384663561/Building+Xen+Hypervisor+with+Petalinux+2020.1#BuildingXenHypervisorwithPetalinux2020.1-StartingLinuxguestswithPass-throughnetworking



On Tue, 9 Jun 2020, Sara Alonso wrote:
> Hi,
> 
> I attach to this email all the files I use for booting xen and dom1, and the 
> xen.dtsi. The version of Xen I use is 4.11.1 and the version
> of SDK I use is 2019.1. I don't get any warnings in Xen console.
> But when I create the SDK lwip application I get two error messages: "region 
> 'psu_ddr_0_MEM_0' overflowed by 34623488 bytes" and
> "client.elf section '.bss' will not fit in region 'psu_ddr_0_MEM_0'". I solve 
> these errors by resizing the 'psu_ddr_0_MEM_0' in lscript.ld
> to 35MB. I don't know if this has something to do with my problem.
> Then I don't get any message in Xen console when I boot domU.
> Thank you,
> Sara
> 
> [icon_10_generic_list.png]  XEN.zip[x_8px.png]
> 
> El lun., 8 jun. 2020 a las 19:23, Stefano Stabellini 
> (<sstabellini@xxxxxxxxxx>) escribió:
>       On Sat, 6 Jun 2020, Julien Grall wrote:
>       > On 05/06/2020 07:54, Sara Alonso wrote:
>       > > Hi,
>       >
>       > Hello,
>       >
>       > Adding Stefano as this looks like a Xilinx SDK issue rather than a 
> Xen itself.
>       >
>       > Cheers,
>       >
>       > > I am a student and I am using Xen for my master thesis. I am trying 
> to boot
>       > > a standalone server TCP guest in Xen DomU on a ZCU102 board. First, 
> I build
>       > > a petalinux project (in xen.dtsi I have added some lines for 
> passthroughing
>       > > the uart1 and the gem3). Next, I create a standalone application in 
> SDK,
>       > > selecting "Hypervisor Guest: Yes" and using lwIP TCP Perf Server 
> template. I
>       > > selected uart1 for output in bsp settings. When I build the project
>       > > server.bin file is created. I also create a config file (attached). 
> I copy
>       > > the files for booting Dom0, server.bin and dom1.cfg file in the FAT
>       > > partition of the SD card. Then I boot Dom0 without any problem. I 
> createdom1
>       > > with xl createdom1.cfg. The domain is created without any error. 
> When I do
>       > > xl list, it says that dom1 is running, but anything appears in 
> uart1 and I
>       > > cannot connect the client, so I think the application is not running
>       > > correctly. I don't have this problem when I boot a hello world 
> application
>       > > in domU, it appears the message in uart1.
>       > >
>       > > I think I am missing some step. Could you help me to solve this
>       > > issue, please?
> 
>       Hi Sara,
> 
>       Let me ask you a bunch of questions to make sure I understand your setup
>       correctly.
> 
>       Could you please send me the host device tree that you are using
>       (i.e. xen.dtb), the VM config file for the DomU (createdom1.cfg) and the
>       partial device tree for the Domu? (I can't access the files you attached
>       to your original email.)
> 
>       Also, what version of Xilinx Xen are you using?
> 
> 
>       For your information, I know of a potential issue with the LWIP
>       baremetal app on Xen. It manifests with warning messages like the
>       following on the Xen console:
> 
>         No access to MMIO read ff5e005c, which is gem3's REF CTRL register 
> address
> 
>       Have you seen anything like it by any chance? If so, I know the solution
>       to the problem.
> 
> 
>