On Wed, Jan 24, 2018 at 12:23:05PM +1100, Michael Ellerman wrote:
> Jonathan Neuschäfer writes:
[...]
> > Do you have any pointer on how to implement discontiguous memory
> > support? CONFIG_ARCH_SPARSEMEM_ENABLE seems relevant.
>
> I'm not really sure what the key impediment to it working is.
>
Jonathan Neuschäfer writes:
> On Tue, Jan 23, 2018 at 11:58:06PM +1100, Michael Ellerman wrote:
>> Jonathan Neuschäfer writes:
>>
>> > On the Nintendo Wii, there are two ranges of physical memory, and MMIO
>> > in between, but Linux on ppc32 doesn't support discontiguous memory.
>> > Therefore
On Tue, Jan 23, 2018 at 11:58:06PM +1100, Michael Ellerman wrote:
> Jonathan Neuschäfer writes:
>
> > On the Nintendo Wii, there are two ranges of physical memory, and MMIO
> > in between, but Linux on ppc32 doesn't support discontiguous memory.
> > Therefore a hack was introduced in commit c5df7
Jonathan Neuschäfer writes:
> On the Nintendo Wii, there are two ranges of physical memory, and MMIO
> in between, but Linux on ppc32 doesn't support discontiguous memory.
> Therefore a hack was introduced in commit c5df7f775148 ("powerpc: allow
> ioremap within reserved memory regions") and comm
