Michael Ellerman <m...@ellerman.id.au> writes: > "Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com> writes: > >> On Wednesday 28 June 2017 12:48 PM, Alexey Kardashevskiy wrote: >>> On 28/06/17 16:09, Aneesh Kumar K.V wrote: >>>> We can use pfn_to_page in realmode for other configs. Hence remove the >>>> CONFIG_FLATMEM ifdef >>> >>> For CONFIG_SPARSEMEM and CONFIG_DISCONTIGMEM and others (I am struggling to >>> find the full list :) )? Are you sure about that? If I recall correctly, at >>> the time realmode_pfn_to_page() could not work for all of them, what >>> changed? >> >> That is one thing I wanted to check. Everything other than >> SPARSEMEM_VMEMMAP should use linear mapping which can work with real >> mode also right ? Or am i missing something ? > > I think that's right. But I'm going to make you test it anyway :)
Tested this by printing page->flags with FLATMEM, SPARSEMEM and SPARSEMEM_VMEMMAP in kvm real mode handler. -aneesh