[Xen-bugs] [Bug 1434] New: Fail to Install 32 bit Linux guest when we enable SMP supporting

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1434

           Summary: Fail to Install 32 bit Linux guest when we enable SMP
                    supporting
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: HVM
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: shaohui.zheng@xxxxxxxxx


Xen unstable: changeset 19238
Hypervior: 64 bit
Guest OS: RHEL4x/RHEL5x

Install a 32-bit Linux guest via NFS . if we set vcpus = 1, it can pass the
installation without any error.
but if we set vcpus > 1, the guest hangs in a random position. it almost can be
reproduced each time. I have try to set timer_mode=1/2/3, it does not work,
either, I also tried to add hpet=0/1, it failed as the same. 

I tried  about 41 times installation, only a few success, here is the summary:

=====================================================================
                            Total   Pass    Fail    NoResult   Crash
=====================================================================
installation                41      8       33        0        0
=====================================================================
installation                41      8       33        0        0
 :rhel5_u3_64_gPAE          30      8       22        0        0
 :rhel5_u2_64_gPAE          11      0       11        0        0
=====================================================================
Total                       41      8       33        0        0

but 64-bit guest, I try 90 times, only 7 failed:
=====================================================================
                            Total   Pass    Fail    NoResult   Crash
=====================================================================
installation                90      83      7         0        0
=====================================================================
installation                90      83      7         0        0
 :rhel5_u2_64_g32e          30      29      1         0        0
 :rhel5_u3_64_g32e          30      25      5         0        0
 :rhel4_u3_64_g32e          30      29      1         0        0
=====================================================================
Total                       90      83      7         0        0

the installation is based on network, for 32-bit guest, it will raise a
exception in most time, it says that the guest Files system became as readonly.


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