[Xen-users] xen 4.6 & dom0pvh

[ÃliÃs TamÃs <et@xxxxxxx>]

Hi all.

After several unsuccessfuly tries with dom0pvh I decided to ask for some
help.

I'm compiling xen 4.6-staging from source, and creating a dom0 on a
debian 8 system.

Without the kernel parameter dom0pvh=1, the system just boots fine and
XEN is working useable. However, when turning dom0pvh=1, after the xen
kernel loads, the kernel freezez with a stack dump.

Any ideas what extra necessary steps should be taken in order to be able
to use dom0pvh?

For compiling xen, I'm not using any extra ddigional paramters, only
"--disable-debug" and "--enable-systemd"

my grub2 bootloader parameters are (working ones):

"
multiboot       /xen-4.6.1-pre.gz placeholder  dom0_mem=1024M dom0_max_vcpus=2
dom0_vcpus_pin noselfballooning

module  /vmlinuz-3.16.0-4-amd64 placeholder
root=UUID=ecbf8f7c-d196-4be6-8409-6e414c039d1b ro nomodeset
elevator=deadline tmem=yes transparent_hugepage=always tmem_compress=yes
cpuidle ipv6.disable=1

module  --nounzip   /initrd.img-3.16.0-4-amd64
"

my dom0 cpu is (HAP is enabled through ept instruction set):

processor       : 3
vendor_id       : GenuineIntel
cpu family      : 6
model           : 58
model name      : Intel(R) Core(TM) i5-3550 CPU @ 3.30GHz
stepping        : 9
microcode       : 0x1b
cpu MHz         : 1639.816
cache size      : 6144 KB
physical id     : 0
siblings        : 4
core id         : 3
cpu cores       : 4
apicid          : 6
initial apicid  : 6
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology
nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx
smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt
tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb
xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase
smep erms
bogomips        : 6621.73
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual

Thnak you om advance!

-- 


Éliás Tamás
Thomas Elias

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