[Xen-users] xl create and xl destroy error

[Milan Boberic]

Hi everybody,
I implemented Xen Hypervisor 4.9.2 on UltraZed-EG board with carrier card
following these steps:
1.) installed petalinux on Ubuntu 16.04
2.) dowloaded UltraZed-EG IO Carrier Card - PetaLinux 2018.2 Standard BSP
3.) created project: petalinux-create -t project –s <path_to_BSP>
4.) copied xen-overlay.dtsi from ZCU102 project (also made with BSP) to my
project
5.) built xen hypervisor following this guide link
<http://www.wiki.xilinx.com/Building%20Xen%20Hypervisor%20with%20Petalinux%202018.1>
(booting with SD card)
6.) made baremetal application that blinks PS LED with Vivado
7.) measured signals jitted when application is on board with and with out
Xen

I menaged to decrease jitter adding following in xen-overlay.dtsi file in
xen-bootargs: sched=null vwfi=native.

The problem is when I add sched=null vwfi=native I can create my bare-metal
application with xl create and destroy it with xl destroy but when I want
to start it again (xl create) this error pops:

***@uz3eg-iocc-2018-2:~# xl create bm1.cfg
Parsing config from bm1.cfg
(XEN) IRQ 48 is already used by domain 1
libxl: error: libxl_create.c:1278:domcreate_launch_dm: Domain 2:failed give
domain access to irq 48: Device or resource busy
libxl: error: libxl_domain.c:1003:libxl__destroy_domid: Domain
2:Non-existant domain
libxl: error: libxl_domain.c:962:domain_destroy_callback: Domain 2:Unable
to destroy guest
libxl: error: libxl_domain.c:889:domain_destroy_cb: Domain 2:Destruction of
domain failed

When I remove sched=null vwfi=native and build project again everything
works fine, I can create and destroy bm app as many times as i want.
Added in attachment bare-metal application's configuration file, xl dmesg,
dmesg and xl -v create message.
Thank you in adance, best regards, Milan Boberic.

[Milan Boberic]

Attachments.

Post by Milan Boberic
Hi everybody,
I implemented Xen Hypervisor 4.9.2 on UltraZed-EG board with carrier card
1.) installed petalinux on Ubuntu 16.04
2.) dowloaded UltraZed-EG IO Carrier Card - PetaLinux 2018.2 Standard BSP
3.) created project: petalinux-create -t project –s <path_to_BSP>
4.) copied xen-overlay.dtsi from ZCU102 project (also made with BSP) to my
project
5.) built xen hypervisor following this guide link
<http://www.wiki.xilinx.com/Building%20Xen%20Hypervisor%20with%20Petalinux%202018.1>
(booting with SD card)
6.) made baremetal application that blinks PS LED with Vivado
7.) measured signals jitted when application is on board with and with
out Xen
I menaged to decrease jitter adding following in xen-overlay.dtsi file in
xen-bootargs: sched=null vwfi=native.
The problem is when I add sched=null vwfi=native I can create my
bare-metal application with xl create and destroy it with xl destroy but
Parsing config from bm1.cfg
(XEN) IRQ 48 is already used by domain 1
libxl: error: libxl_create.c:1278:domcreate_launch_dm: Domain 2:failed
give domain access to irq 48: Device or resource busy
libxl: error: libxl_domain.c:1003:libxl__destroy_domid: Domain
2:Non-existant domain
libxl: error: libxl_domain.c:962:domain_destroy_callback: Domain 2:Unable
to destroy guest
libxl: error: libxl_domain.c:889:domain_destroy_cb: Domain 2:Destruction
of domain failed
When I remove sched=null vwfi=native and build project again everything
works fine, I can create and destroy bm app as many times as i want.
Added in attachment bare-metal application's configuration file, xl dmesg,
dmesg and xl -v create message.
Thank you in adance, best regards, Milan Boberic.