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Date:      Sat, 19 May 2018 15:56:35 +0530
From:      Pratyush Yadav <pratiy0100@gmail.com>
To:        Akshay Jaggi <jaggi@freebsd.org>
Cc:        freebsd-xen@freebsd.org
Subject:   Re: Xen kernel fails to boot, d0v1 triple fault looks like the cuplrit
Message-ID:  <CA%2BX=3TKDq_7_sXKPBodvEPYAG4se-VgZ_R-8YjKphi9-1dnRZQ@mail.gmail.com>
In-Reply-To: <CAAeUNVmgeoqhUxNBocfn99jwARWmCMJ-hov-gQvF6Sp3WpNQ7w@mail.gmail.com>
References:  <CA%2BX=3T%2BYiUmNNPSSA36QmwYsamgAf0hHEsEock-FcomCHc-Jww@mail.gmail.com> <8B64FF6E-78C5-4803-ACE0-D569EA5FDAB2@FreeBSD.org> <CAAeUNVmgeoqhUxNBocfn99jwARWmCMJ-hov-gQvF6Sp3WpNQ7w@mail.gmail.com>

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Hi,

On Fri 18 May, 2018, 6:55 PM Akshay Jaggi, <jaggi@freebsd.org> wrote:

> Looks to me like a configuration error. Worst case, incompatible hardware=
.
> Iirc, you mentioned Xen and Freebsd were on a USB drive. Can you try usin=
g
> a hard drive partition?
> Also, there was an option to enable verbose logging.
>

I installed on my HDD, but it makes no difference. Also, I have set log
level to all, still the logs are not being saved.

Regards,
> Akshay
>
> On Fri 18 May, 2018, 2:13 PM Edward Tomasz Napiera=C5=82a, <trasz@freebsd=
.org>
> wrote:
>
>>
>> > On 18 May 2018, at 12:59, Pratyush Yadav <pratiy0100@gmail.com> wrote:
>> >
>> > Hi,
>> >
>> > So I have been trying to get Xen to boot on my laptop. It is getting
>> > stuck with the following error messages:
>> >
>> > (XEN) Scrubbing free RAM on 1 nodes using 4 CPUs
>> > (XEN) [VT-D] DMAR: [DMA Read} Request device [0000:00:1a.0] fault addr
>> > 9ce13000. iommu reg - ffff82c000203000
>> > (XEN) [VT-D] DMAR: reason 06 - PTE read access is not set
>> > (XEN) ........... done
>> > (XEN) initial low memory virq threshold set at 0x200 pages.
>> > (XEN) Std. Loglevel: All
>> > (XEN) Guest Loglevel: All
>> > (XEN) Xen is keeping VGA console
>> > (XEN) Boot video device 00:02.0
>> > (XEN) ***Serial input -> DOM0 (type 'CTRL-a' three times to switch
>> input to Xen)
>> > (XEN) Freed 320 kB init memory
>> > FreeBSD PVH running on xen-3.0-x86_64p
>> > Copyright (c) 1992-2018 The FreeBSD Project.
>> > Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993,
>> > 1994 The regents of the University of California. All rights reserved.
>> > FreeBSD is a registered trademark of The FreeBSD Foundation.
>> > FreeBSD 12.0-CURRENT #0 r333606: Mon May 14 19:59:08 UTC 2018
>> >    root@releng3.nyi.freebsd.org:/usr/obj/usr/src/amd64.amd64/sys/GENER=
IC
>> amd64
>> > WARNING: WITNESS option enabled, expect reduced performance.
>> > VT(vga): text 80x25
>> > CPU: Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz (2494.22-MHz K8-class
>> CPU)
>> >    Origin=3D"GenuineIntel" Id=3D0x306c3 Family=3D0x6 Model=3D0x3c Step=
ping=3D3
>> >
>> Features=3D0x17c1cbf5<FPU,DE,TSC,MSR,PAE,MCE.CX8.APIC,SEP,MCA,CMOV,PAT,A=
CPI,MMX
>> > FXSR,SSE,SSE2,HTT>
>> >
>> Features2=3D0xf6f83203<SSE3,PCLMULQDQ,SSSE3,FMA,CX16,SSE4.1,SSE4.2,x2API=
C,MOVBE
>> > POPCNT,AESNI,XSAVE,AVX,F16C,RDRAND,HV>
>> >    AMD Features=3D0x20101800<SYSCALL,<s12>NX,LM>
>> >    AMD Features2=3D0x21<<LAHF,ABM>
>> >    Structured Extended
>> Features=3D0x2329<FSGSBASE,BMI1,AVX2,BMI2,ERMS,NFPUSG>
>> > Hypervisor: Origin =3D "XenVMMXenVMM"
>> > real memory  =3D 9991770112 (9528 MB)
>> > avail memory =3D 7936724992 (7569 MB)
>> > (XEN) d0v1 Triple fault - invoking HVM shutdown action 0
>> > (XEN) *** Dumping Dom0 vcpu#1 state: ***
>> > (XEN) ----[ Xen-4.7.2 x86_64 debug=3Dn Not tainted ]----
>> > (XEN) CPU:    1
>> > (XEN) RIP:    0020:[<ffffffff8102042b>]
>> > (XEN) RFLAGS:  0000000000010016    CONTEXT: hvm guest (d0v1)
>> > (XEN) rax: 0000000000000000   rbx: ffffffff8201c100   rcx:
>> 0000000000000001
>> > (XEN) rdx: 0000000000003078   rsi: ffffffff81b992f8   rdi:
>> fffffe0003bb6078
>> > (XEN) rbp: fffffe00009ffff0   rsp: fffffe00009fffa0   r8:
>> 00000000ffffffff
>> > (XEN) r15: 0000000000000400   cr0: 0000000000000011   cr4:
>> 0000000000000020
>> > (XEN) cr3: 00000000035a4000   cr2: 0000000000000ff0
>> > (XEN) ds: 0028   es: 0028   fs: 0028   gs: 0028   ss: 0028   cs: 0020
>> > (XEN) Guest stack trace from rsp=3Dfffffe00009fffa0:
>> > (XEN)   Fault while accessing guest memory.
>> > (XEN) Hardware Dom0 halted: halting machine
>> >
>> > Any idea why this is happening and how can I fix this?
>>
>> First thing I=E2=80=99d try is to checkout an earlier version - eg from =
three
>> months ago) and see if it persist.  Another thing to do (in parallel) is=
 to
>> file a PR (http://bugs.freebsd.org).
>>
>>



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