Question: xen + vhost user

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Question: xen + vhost user

From:	Peng Fan
Subject:	Question: xen + vhost user
Date:	Sun, 30 Jun 2024 12:58:48 +0000
Hi All,

I am trying to enable vhost user input with xen hypervisor on i.MX95, using qemu
vhost-user-input. But meet " Invalid vring_addr message ". My xen domu cfg:

'-chardev', 'socket,path=/tmp/input.sock,id=mouse0',
'-device', 'vhost-user-input-pci,chardev=mouse0',

Anyone knows what missing?

Partial error log:
================ Vhost user message ================
Request: VHOST_USER_SET_VRING_ADDR (9)
Flags:   0x1
Size:    40
vhost_vring_addr:
    index:  0
    flags:  0
    desc_user_addr:   0x0000ffff889b0000
    used_user_addr:   0x0000ffff889b04c0
    avail_user_addr:  0x0000ffff889b0400
    log_guest_addr:   0x00000000444714c0
Setting virtq addresses:
    vring_desc  at (nil)
    vring_used  at (nil)
    vring_avail at (nil)

** (vhost-user-input:1816): CRITICAL **: 07:20:46.077: Invalid vring_addr 
message

Thanks,
Peng.

The full vhost user debug log:
./vhost-user-input --socket-path=/tmp/input.sock --evdev-path=/d
-path=/dev/input/event1 ./vhost-user-input --socket-path=/tmp/input.sock 
--evdev-
================ Vhost user message ================
Request: VHOST_USER_GET_FEATURES (1)
Flags:   0x1
Size:    0
Sending back to guest u64: 0x0000000175000000
================ Vhost user message ================
Request: VHOST_USER_GET_PROTOCOL_FEATURES (15)
Flags:   0x1
Size:    0
================ Vhost user message ================
Request: VHOST_USER_SET_PROTOCOL_FEATURES (16)
Flags:   0x1
Size:    8
u64: 0x0000000000008e2b
================ Vhost user message ================
Request: VHOST_USER_GET_QUEUE_NUM (17)
Flags:   0x1
Size:    0
================ Vhost user message ================
Request: VHOST_USER_GET_MAX_MEM_SLOTS (36)
Flags:   0x1
Size:    0
u64: 0x0000000000000020
================ Vhost user message ================
Request: VHOST_USER_SET_BACKEND_REQ_FD (21)
Flags:   0x9
Size:    0
Fds: 6
Got backend_fd: 6
================ Vhost user message ================
Request: VHOST_USER_SET_OWNER (3)
Flags:   0x1
Size:    0
================ Vhost user message ================
Request: VHOST_USER_GET_FEATURES (1)
Flags:   0x1
Size:    0
Sending back to guest u64: 0x0000000175000000
================ Vhost user message ================
Request: VHOST_USER_SET_VRING_CALL (13)
Flags:   0x1
Size:    8
Fds: 7
u64: 0x0000000000000000
Got call_fd: 7 for vq: 0
================ Vhost user message ================
Request: VHOST_USER_SET_VRING_ERR (14)
Flags:   0x1
Size:    8
Fds: 8
u64: 0x0000000000000000
================ Vhost user message ================
Request: VHOST_USER_SET_VRING_CALL (13)
Flags:   0x1
Size:    8
Fds: 9
u64: 0x0000000000000001
Got call_fd: 9 for vq: 1
================ Vhost user message ================
Request: VHOST_USER_SET_VRING_ERR (14)
Flags:   0x1
Size:    8
Fds: 10
u64: 0x0000000000000001
(XEN) d2v0 Unhandled SMC/HVC: 0x84000050
(XEN) d2v0 Unhandled SMC/HVC: 0x8600ff01
(XEN) d2v0: vGICD: RAZ on reserved register offset 0x00000c
(XEN) d2v0: vGICD: unhandled word write 0x000000ffffffff to ICACTIVER4
(XEN) d2v0: vGICR: SGI: unhandled word write 0x000000ffffffff to ICACTIVER0
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_CONFIG (25)
Flags:   0x9
Size:    148
================ Vhost user message ================
Request: VHOST_USER_GET_CONFIG (24)
Flags:   0x1
Size:    148
================ Vhost user message ================
Request: VHOST_USER_SET_FEATURES (2)
Flags:   0x1
Size:    8
u64: 0x0000010170000000
================ Vhost user message ================
Request: VHOST_USER_SET_VRING_NUM (8)
Flags:   0x1
Size:    8
State.index: 0
State.num:   64
================ Vhost user message ================
Request: VHOST_USER_SET_VRING_BASE (10)
Flags:   0x1
Size:    8
State.index: 0
State.num:   0
================ Vhost user message ================
Request: VHOST_USER_SET_VRING_ADDR (9)
Flags:   0x1
Size:    40
vhost_vring_addr:
    index:  0
    flags:  0
    desc_user_addr:   0x0000ffff889b0000
    used_user_addr:   0x0000ffff889b04c0
    avail_user_addr:  0x0000ffff889b0400
    log_guest_addr:   0x00000000444714c0
Setting virtq addresses:
    vring_desc  at (nil)
    vring_used  at (nil)
    vring_avail at (nil)

** (vhost-user-input:1816): CRITICAL **: 07:20:46.077: Invalid vring_addr 
message

root@imx95evk:~#
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