[Xen-bugs] [Bug 1531] New: [TXT]Xen hang when dom0 reboot/shutdown with tboot

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1531

           Summary: [TXT]Xen hang when dom0 reboot/shutdown with tboot
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: jiajun.xu@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32pae
Weybridge platform
Tboot: 176:e57acd4d1460
Xen: 20330:0705efd9c69e
pvops dom0: 2afad356210ac35cbbc81904e0ac8b514b7f6212
ioemu: 71324566f3b95bb88105659439adaef1d5bd155c


Bug detailed description:
--------------------------
On Weybridge, When reboot or shutdown ia32pae dom0, Xen will hang. 
IA32E has no this issue.



Basic root-causing log:
----------------------
......
(XEN) Xen call trace:
(XEN)    [<ff1426a4>] flush_area_local+0x134/0x153
(XEN)    [<ff14d596>] map_pages_to_xen+0x213/0x9cf
(XEN)    [<ff173061>] tboot_shutdown+0x93/0x2e2
(XEN)    [<ff159d40>] machine_restart+0x99/0x1f9
(XEN)    [<ff119db7>] dom0_shutdown+0x56/0x73
(XEN)    [<ff104788>] domain_shutdown+0x23/0xb9
(XEN)    [<ff11868c>] do_sched_op+0x109/0x471
(XEN)    [<ff1c7a58>] hypercall+0xb8/0xd8
(XEN)    
(XEN) Pagetable walk from ffe00000:
(XEN)  L3[0x003] = 000000002ed85001 00028580
(XEN)  L2[0x1ff] = 00000000002dc063 55555555 
(XEN)  L1[0x000] = 0000000000000000 ffffffff
(XEN) 
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) FATAL PAGE FAULT
(XEN) [error_code=0000]
(XEN) Faulting linear address: ffe00000
(XEN) ****************************************
(XEN) 
(XEN) Reboot in five seconds...
(XEN) ----[ Xen-3.5-unstable  x86_32p  debug=y  Not tainted ]----
......


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