[Qemu-devel] Question on pointers in the qemu user space emulation

[Erik de Castro Lopo]

Hi all,

I'm currently working on implementing a missing part of a linux-user
syscall. This syscall includes a function pointer for a callback.

If one has a 64 bit user space emulation running on a 32 bit host,
how does one handle the fact that the pointer might be 64 bits?

Does the fact that the 32 bit host con only ever give out 32 bit
addreses to the 64 bit guest just cancel out the possibility of
any problems?

Cheers,
Erik
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Erik de Castro Lopo
http://www.mega-nerd.com/