[Adding Andrej]
Hi Karim,
On 05/12/2022 13:30, Karim Manaouil wrote:
Hi Ralf,
I am trying to boot a Linux guest (based on configs/x86/linux-x86-demo.c).
I tried to debug and solve this issue for a while but no success so far.
The cell is created, and the guest starts booting, but then fails when
initialising the APIC. A write to an APIC register is intercepted by
Jailhouse and it decides that the guest is trying to set an invalid LVT
delivery mode. I checked the x86 documentation, it seems that it
should not be invalid, but I am not knowledgeable enough.
Sound familiar… I remember that Andrej and I have hit this one on an AMD
machine some years ago:
https://groups.google.com/g/jailhouse-dev/c/1wRKIiGN0GA/m/_p_NSIBpDwAJ
Andrej, do you know how we finally (quick?)-fixed that issue back then?
Did we really have hardware misbehavior? It's been a while, but as far
as I remember that was the case.
Thanks,
Ralf
Here is, pasted below, the log output from Jailhouse and the booting
guest kernel.
PS: I am following the steps in Documentation/non-root-linux.txt and
using the patched kernel in queues/jailhouse branch.
Cheers
Karim
---
Jailhouse:
Cell "linux-x86-demo" can be loaded
Started cell "linux-x86-demo"
CPU 2 received SIPI, vector 100
CPU 3 received SIPI, vector 100
FATAL: Setting invalid LVT delivery mode (reg 35, value 00000700)
FATAL: Unhandled APIC access, offset 848, is_write: 1
RIP: 0xffffffffaf84fb92 RSP: 0xffffffffb1003e80 FLAGS: 246
RAX: 0xffffffffaf84fb90 RBX: 0x0000000000000180 RCX: 0x0000000000000000
RDX: 0x0000000000000000 RSI: 0x0000000000000700 RDI: 0x0000000000000350
CS: 10 BASE: 0x0000000000000000 AR-BYTES: 29b EFER.LMA 1
CR0: 0x0000000080050033 CR3: 0x000000003ae0c000 CR4: 0x00000000000406b0
EFER: 0x0000000000001d01
Parking CPU 2 (Cell: "linux-x86-demo")
Cell "linux-x86-demo" can be loaded
Closing cell "linux-x86-demo"
Page pool usage after cell destruction: mem 2972/32211, remap 65703/131072
CPU 2 received SIPI, vector 96
CPU 3 received SIPI, vector 96
Linux demo guest (last few lines from kernel boot log on the serial
console):
init, 1176K bss, 73676K reserved, 0K cma-reserved)
[ 2.960440] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 3.040332] Dynamic Preempt: voluntary
[ 3.083151] rcu: Preemptible hierarchical RCU implementation.
[ 3.151749] rcu: RCU event tracing is enabled.
[ 3.205830] rcu: RCU restricting CPUs from NR_CPUS=64 to
nr_cpu_ids=2.
[ 3.284872] Trampoline variant of Tasks RCU enabled.
[ 3.345191] rcu: RCU calculated value of scheduler-enlistment delay
is 100 jiffies.
[ 3.436710] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 3.518471] NR_IRQS: 4352, nr_irqs: 424, preallocated irqs: 0
[ 3.585483] rcu: srcu_init: Setting srcu_struct sizes based on
contention.
[ 3.667665] Console: colour dummy device 80x25
[ 3.720639] Enabling UART0 (port 0x3f8)
[ 3.766423] printk: console [ttyS0] enabled
[ 3.766423] printk: console [ttyS0] enabled
[ 3.866333] printk: bootconsole [earlyser0] disabled
[ 3.866333] printk: bootconsole [earlyser0] disabled
[ 3.985019] APIC: Switch to symmetric I/O mode setup
[ 4.046377] Switched APIC routing to physical flat.
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336. Is e buidheann carthannais
a th’ ann an Oilthigh Dhùn Èideann, clàraichte an Alba, àireamh clàraidh
SC005336.
--
You received this message because you are subscribed to the Google Groups
"Jailhouse" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/jailhouse-dev/06f03e95-7ff4-3822-aeba-be48e5006b15%40oth-regensburg.de.
