[Xen-devel] mmap() on pvops will not return FAILED if the memory can't be mapped or accessed.

["Wang, Shane" <shane.wang@xxxxxxxxx>]

Jeremy,

I wrote an application calling mmap() on pvops and found it will not return 
FAILED if the mapped memory (say TXT heap) can't be mapped or accessed, unlike 
2.6.18 domain 0 and the latest kernel.

The serial port outputs (XEN) mm.c:776:d0 Non-privileged (0) attempt to map I/O 
space 000af520...000af5ff, which is the same as the output of 2.6.18 dom0.
However, then it outputs many lines like (XEN) mm.c:838:d0 Error getting mfn 
ac247 (pfn a38aa) from L1 entry 80000000ac247425 for l1e_owner=0, 
pg_owner=32753....
This behaviour may cause dom0 hang finally.

Is it correct? Can you help to have a look at it?

Thanks.
Shane
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel