> > Is it a good idea to expect userspace to assume PAGE_SIZE/PAGE_SHIFT are
> > constants? Don't some architectures have variable page sizes?
>
> For userspace mappings -- no.
>
> In theory some architectures can support this (MIPS?) but I don't
> know if we ever will...
The plan is support larger page sizes for MIPS but not in a way that is
visible to userspace but only use the available page sizes to reduce
the number of TLB operations.
Ralf
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