[Xen-bugs] [Bug 1049] New: upper limit of memory for xen is 166gb

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1049

           Summary: upper limit of memory for xen is 166gb
           Product: Xen
           Version: unstable
          Platform: x86-64
        OS/Version: Linux-2.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: krysans@xxxxxxxxxx


This seems to correspond to the truncation at 166Gb for 32on64 support (see
xen/arch/x86/e820.c:machine_specific_memory_setup()). There used to be
a command line options to disallow creation of compat mode guests (thereby
allowing all memory to be used), but that option went away with fairly recent
changes.  

See thread for full discussion:
http://lists.xensource.com/archives/html/xen-devel/2007-08/msg00494.html


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