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[win-pv-devel] Windows 10 domU is unstable with PV Bus Driver


This is my first post here so please forgive me if I missed something
obvious… But I've been searching for a while :-/

So, my Windows 10 domU is stable as long as I don't install the PV drivers.
I couldn't install version 8.2.1 of the PV drivers, so in July I tried
the test version from http://xenbits.xen.org/pvdrivers/win/. It worked
well for a while but last month it started to reboot from times to
times (I'd say after a "big" Windows upgrade).
I uninstalled all PV drivers and the OS was stable again. So yesterday
I tried again with the latest versions of the PV driver and I managed
to install xenbus and xenvbd before it got unstable again.
Painfully I managed to remove everything and it's back to stable.

I can live without the PV drivers (especially given the time I've lost
trying to use them compared to the benefit!) but it's a bit of a pity
and I'd like to understand.
Is there something I can try to debug that?

Thank you for your help

I collected some data, but this isn't meaningful to me.

Name                                        ID   Mem VCPUs      State   Time(s)
win10                                        3  3800     4     ---sr-      79.8

(XEN) *** Dumping Dom3 vcpu#1 state: ***
(XEN) ----[ Xen-4.9.0  x86_64  debug=n   Not tainted ]----
(XEN) CPU:    1
(XEN) RIP:    0010:[<fffff802d49785a3>]
(XEN) RFLAGS: 0000000000010082   CONTEXT: hvm guest (d3v1)
(XEN) rax: ffffd30041debb10   rbx: ffffd30041de8328   rcx: 0000000000000000
(XEN) rdx: 0000000000006380   rsi: 0000000000000007   rdi: ffffd30041de8328
(XEN) rbp: ffffd30041debbd0   rsp: ffffd30041deb9d0   r8:  00000000000000ff
(XEN) r9:  00000000000000de   r10: fffff802d49785a3   r11: 0000000000000000
(XEN) r12: ffffd30041de81f0   r13: 00000000ffffff00   r14: ffffd30041de83d0
(XEN) r15: 0000000000000000   cr0: 0000000080050031   cr4: 00000000001506f8
(XEN) cr3: 00000000001aa000   cr2: 0000000000006380
(XEN) ds: 002b   es: 002b   fs: 0053   gs: 002b   ss: 0018   cs: 0010

Name                                        ID   Mem VCPUs      State   Time(s)
win10                                        6  3800     4     ---sc-      99.5

(XEN) *** Dumping Dom6 vcpu#0 state: ***
(XEN) ----[ Xen-4.9.0  x86_64  debug=n   Not tainted ]----
(XEN) CPU:    1
(XEN) RIP:    0010:[<fffff800bf56574f>]
(XEN) RFLAGS: 0000000000010086   CONTEXT: hvm guest (d6v0)
(XEN) rax: fffff800c2860f70   rbx: 00000000c0000001   rcx: fffff80790829310
(XEN) rdx: 000000000000004d   rsi: 0000000000000028   rdi: 0000000000000000
(XEN) rbp: fffff800c2860e80   rsp: fffff800c2860e60   r8:  0000000000000000
(XEN) r9:  fffff80790829000   r10: 0000000000000027   r11: fffff800c2860f58
(XEN) r12: 000000000000003d   r13: fffff800c2863301   r14: 0000000000000028
(XEN) r15: fffff80790813f80   cr0: 0000000080050031   cr4: 00000000001506f8
(XEN) cr3: 0000000000212000   cr2: fffff800c284a080
(XEN) ds: 002b   es: 002b   fs: 0053   gs: 002b   ss: 0018   cs: 0010

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