Re: [PATCH V2 00/23] IOREQ feature (+ virtio-mmio) on Arm

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Thu, 29 Oct 2020, Oleksandr Tyshchenko wrote:
> Hi Stefano
> 
> [sorry for the possible format issue]
> 
> On Thu, Oct 29, 2020 at 9:53 PM Stefano Stabellini <sstabellini@xxxxxxxxxx> 
> wrote:
>       On Thu, 29 Oct 2020, Oleksandr Tyshchenko wrote:
>       > On Thu, Oct 29, 2020 at 9:42 AM Masami Hiramatsu 
> <masami.hiramatsu@xxxxxxxxxx> wrote:
>       >       Hi Oleksandr,
>       >
>       > Hi Masami
>       >
>       > [sorry for the possible format issue]
>       >  
>       >
>       >       I would like to try this on my arm64 board.
>       >
>       > Glad to hear you are interested in this topic. 
>       >  
>       >
>       >       According to your comments in the patch, I made this config 
> file.
>       >       # cat debian.conf
>       >       name = "debian"
>       >       type = "pvh"
>       >       vcpus = 8
>       >       memory = 512
>       >       kernel = "/opt/agl/vmlinuz-5.9.0-1-arm64"
>       >       ramdisk = "/opt/agl/initrd.img-5.9.0-1-arm64"
>       >       cmdline= "console=hvc0 earlyprintk=xen root=/dev/xvda1 rw"
>       >       disk = [ '/opt/agl/debian.qcow2,qcow2,hda' ]
>       >       vif = [ 'mac=00:16:3E:74:3d:76,bridge=xenbr0' ]
>       >       virtio = 1
>       >       vdisk = [ 'backend=Dom0, disks=ro:/dev/sda1' ]
>       >
>       >       And tried to boot a DomU, but I got below error.
>       >
>       >       # xl create -c debian.conf
>       >       Parsing config from debian.conf
>       >       libxl: error: libxl_create.c:1863:domcreate_attach_devices: 
> Domain
>       >       1:unable to add virtio_disk devices
>       >       libxl: error: libxl_domain.c:1218:destroy_domid_pci_done: Domain
>       >       1:xc_domain_pause failed
>       >       libxl: error: libxl_dom.c:39:libxl__domain_type: unable to get 
> domain
>       >       type for domid=1
>       >       libxl: error: libxl_domain.c:1136:domain_destroy_callback: 
> Domain
>       >       1:Unable to destroy guest
>       >       libxl: error: libxl_domain.c:1063:domain_destroy_cb: Domain
>       >       1:Destruction of domain failed
>       >
>       >
>       >       Could you tell me how can I test it?
>       >
>       >
>       > I assume it is due to the lack of the virtio-disk backend (which I 
> haven't shared yet as I focused on the IOREQ/DM support on
>       Arm in the
>       > first place).
>       > Could you wait a little bit, I am going to share it soon. 
> 
>       Do you have a quick-and-dirty hack you can share in the meantime? Even
>       just on github as a special branch? It would be very useful to be able
>       to have a test-driver for the new feature.
> 
> Well, I will provide a branch on github with our PoC virtio-disk backend by 
> the end of this week. It will be possible to test this series
> with it. 

Very good, thank you!