This is very similar to an issue we hit a little while ago related to ACPI (and IASL):
https://github.com/projectacrn/acrn-hypervisor/issues/2568

Geoffroy

On 15 Mar 2019, at 18:34, Ross Burton <ross.burton@...> wrote:

Hi,

My setup with an X SOS and Weston UOS works fine with 0.6, but
upgrading to 0.7 it fails:

passed gvt-g optargs low_gm 64, high_gm 448, fence 8
SW_LOAD: get kernel path /var/lib/machines/core-image-weston.bzImage
SW_LOAD: get bootargs root=/dev/vda rw rootwait maxcpus=1 nohpet
console=tty0 console=hvc0 console=ttyS0 no_timer_check
ignore_loglevel log_buf_len=16M consoleblank=0 tsc=reliable
i915.nuclear_pageflip=1 i915.avail_planes_per_pipe=0x070F00
VHM api version 1.0
open hugetlbfs file /run/hugepage/acrn/huge_lv1/D279543825D611E8864ECB7A18B34643
open hugetlbfs file /run/hugepage/acrn/huge_lv2/D279543825D611E8864ECB7A18B34643
level 0 free/need pages:0/0 page size:0x200000
level 1 free/need pages:0/2 page size:0x40000000
to reserve more free pages:
to reserve pages (+orig 0): echo 2 >
/sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages
now enough free pages are reserved!

try to setup hugepage with:
level 0 - lowmem 0x0, biosmem 0x0, highmem 0x0
level 1 - lowmem 0x80000000, biosmem 0x0, highmem 0x0
total_size 0x180000000

mmap ptr 0x0x7fc79e802000 -> baseaddr 0x0x7fc7c0000000
mmap 0x80000000@0x7fc7c0000000
touch 2 pages with pagesz 0x40000000

really setup hugepage with:
level 0 - lowmem 0x0, biosmem 0x0, highmem 0x0
level 1 - lowmem 0x80000000, biosmem 0x0, highmem 0x0
polling 33...
Listening 33...
***********************************************
virt-console backend redirected to /dev/pts/1
***********************************************
tpm: init_vtpm2:Invalid socket path!
/tmp/dm.XznMAIM 30: [0004] Address : fec00000
Error 6302 - Flag value is too large ^ (Maximum 1 bit)

/tmp/dm.XznMAIM 37: [0004] Interrupt : 00000002
Error 6302 - Flag value is too large ^ (Maximum 1 bit)

/tmp/dm.XznMAIM 46: [0004] Interrupt : 00000009
Error 6302 - Flag value is too large ^ (Maximum 2 bit)

/tmp/dm.XznMAIM 47: [0002] Flags (decoded below) : 000D
Error 6302 - Flag value is too large ^ (Maximum 2 bit)

vtnet tx thread closing...
mngr_client_new 113
Stop listening 33...
Stop polling 33...

I filed this as
https://github.com/projectacrn/acrn-hypervisor/issues/2795 but thought
I'd try the list too in case anyone not watching the issues has any
good ideas.

Thanks,
Ross