Is it possible to change proc file system path?

When running the qemu with the kernel accelerator enabled,
I get this message:

type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.


The problem is that the max-user-freq parameter is in a path
that qemu cannot find:

sudo sysctl -a | grep max-user-freq
dev.hpet.max-user-freq = 1024


I tried just changing the entry in /etc/sysctl.conf, but when I
ran sysctl -p it complained. Is it possible to change the path
of this parameter? I currently don't see how to modify qemu to
look for the max-user-freq parameter in this path.

-Thanks

.