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54 Commits

Author SHA1 Message Date
Aneesh Kumar K.V
a2f41eb992 powerpc/mm: Add radix pgalloc details 
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2016-05-11 21:53:51 +10:00
Aneesh Kumar K.V
177ba7c647 powerpc/mm/radix: Limit paca allocation in radix 
On return from RTAS we access the paca variables and we have 64 bit
disabled. This requires us to limit paca in 32 bit range.

Fix this by setting ppc64_rma_size to first_memblock_size/1G range.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2016-05-11 21:53:47 +10:00
Aneesh Kumar K.V
d9225ad923 powerpc/mm/radix: Add radix callbacks for vmemmap and map_kernel page() 
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2016-05-01 18:33:03 +10:00
Aneesh Kumar K.V
2bfd65e45e powerpc/mm/radix: Add radix callbacks for early init routines 
This adds routines for early setup for radix. We use device tree
property "ibm,processor-radix-AP-encodings" to find supported page
sizes. If we don't find the above we consider 64K and 4K as supported
page sizes.

We do map vmemap using 2M page size if we can. The linear mapping is
done such that we use required page size for that range. For example
memory of 3.5G is mapped such that we use 1G mapping till 3G range and
use 2M mapping for the rest.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2016-05-01 18:33:00 +10:00