Izik Eidus wrote:
Do you recall what this change fixed? As Paul pointed out in IRC, using the host type here doesn't really fix the problem (target_ulong would be more appropriate). However, we're both curious what problem it's actually fixing since sign extending the int should just work.

ok the commit say:

   kvm: qemu: change the type of the various page masks to unsigned long
prevents truncation with >=4GB of guest physical memory


as far as i remember it was used to address something with
cpu_physical_memory_rw() probably related to &TARGET_PAGE_SIZE
or ~TARGET_PAGE_SIZE,

the fact is that i dont know if it ever fixed anything

Thanks, that was my suspicion too.

Regards,

Anthony Liguori



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