(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate multi-page,extents.

(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate multi-page,extents.

[David F Barrera]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=479

Running xm-test suite on PAE enabled build on SLES 9 SP2 box with 4GB of ram
causes a series of messages to show. The messages do not appear in any 
of the
other machines running the same workload, including those running with 
SLES 9 SP2.

Hardware: IBM xSeries 335, 4GB of RAM
Software: PAE enabled Xen build on SLES 9 SP2 platform, changeset 8571.

snippet of 'xm dmsg' after running xm-test
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: c0100000->c05dc004
(XEN)  Init. ramdisk: c05dd000->c05dd000
(XEN)  Phys-Mach map: c05dd000->c065a000
(XEN)  Start info:    c065a000->c065b000
(XEN)  Page tables:   c065b000->c0664000
(XEN)  Boot stack:    c0664000->c0665000
(XEN)  TOTAL:         c0000000->c0800000
(XEN)  ENTRY ADDRESS: c0100000
(XEN) Scrubbing Free RAM: ...........................................done.
(XEN) Xen trace buffers: disabled
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch 
input to Xen).
(XEN) microcode: CPU1 updated from revision 0x11 to 0x29, date = 08112004
(XEN) microcode: CPU2 updated from revision 0x11 to 0x29, date = 08112004
(XEN) microcode: CPU3 updated from revision 0x11 to 0x29, date = 08112004
(XEN) microcode: CPU0 updated from revision 0x11 to 0x29, date = 08112004
(XEN) mtrr: type mismatch for fd000000,800000 old: write-back new: 
write-combining
(XEN) mtrr: type mismatch for fd000000,800000 old: write-back new: 
write-combining
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page
extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page
extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page
extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page
extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page
extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page
extents.

-- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides

(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate multi-page extents.

[David F Barrera]

We have seen a series of messages when running xm-test lately on a SLES 
9 SP2 32-bit box with 4GB of RAM, PAE enabled Xen build. I don't know 
whether this defect of just an informational message.

(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=memory.c, line=42) Only I/O-capable domains may allocate 
multi-page extents.
(XEN) (file=/tmp/xen-unstable.hg/xen/include/asm/mm.h, line=203) Error 
pfn 101a63: rd=ff387500, od=00000000, caf=00000000, taf=00000000
(XEN) DOM0: (file=mm.c, line=352) Could not get page ref for pfn 101a63
(XEN) DOM0: (file=mm.c, line=2173) Could not get page for mach->phys update

-- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides