On 07/09/2018 07:24 AM, Michael Ellerman wrote:

Because the allmodconfig logic just sets every symbol to M or Y, it
has the effect of always generating a 64-bit config, because
CONFIG_PPC64 becomes Y.

So to make it easier for folks to test 32-bit code, provide a phony
defconfig target that generates a 32-bit allmodconfig.

The 32-bit port has several mutually exclusive CPU types, we choose
the Book3S variants as that's what the help text in Kconfig says is
most com
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

Hi Michael,

Sorry for the delay.  I was traveling (out in the boonies).

I'm trying to use 'make ppc32_allmodconfig'.  Cross-building on x86_64
with crosstools from kernel.org.  (gcc 8.1.0)

I'm getting build errors.  Looks like it's missing a header file or 3.
I looked into that but it's a long and twisty maze of passages.
Any ideas?


  CC      arch/powerpc/mm/dump_linuxpagetables.o
In file included from ../arch/powerpc/include/asm/book3s/pgtable.h:8,
                 from ../arch/powerpc/include/asm/pgtable.h:18,
                 from ../include/linux/hugetlb.h:12,
                 from ../arch/powerpc/mm/dump_linuxpagetables.c:19:
../arch/powerpc/mm/dump_linuxpagetables.c: In function 'populate_markers':
../arch/powerpc/include/asm/book3s/32/pgtable.h:53:19: error: 'PKMAP_BASE' undeclared (first use in this function); did you mean 'AT_BASE'?
 #define KVIRT_TOP PKMAP_BASE
                   ^~~~~~~~~~
../arch/powerpc/include/asm/book3s/32/pgtable.h:64:23: note: in expansion of macro 'KVIRT_TOP'
 #define IOREMAP_TOP ((KVIRT_TOP - CONFIG_CONSISTENT_SIZE) & PAGE_MASK)
                       ^~~~~~~~~
../arch/powerpc/mm/dump_linuxpagetables.c:456:39: note: in expansion of macro 'IOREMAP_TOP'
  address_markers[i++].start_address = IOREMAP_TOP;
                                       ^~~~~~~~~~~
../arch/powerpc/include/asm/book3s/32/pgtable.h:53:19: note: each undeclared identifier is reported only once for each function it appears in
 #define KVIRT_TOP PKMAP_BASE
                   ^~~~~~~~~~
../arch/powerpc/include/asm/book3s/32/pgtable.h:64:23: note: in expansion of macro 'KVIRT_TOP'
 #define IOREMAP_TOP ((KVIRT_TOP - CONFIG_CONSISTENT_SIZE) & PAGE_MASK)
                       ^~~~~~~~~
../arch/powerpc/mm/dump_linuxpagetables.c:456:39: note: in expansion of macro 'IOREMAP_TOP'
  address_markers[i++].start_address = IOREMAP_TOP;
                                       ^~~~~~~~~~~
../arch/powerpc/mm/dump_linuxpagetables.c:464:39: error: implicit declaration of function 'PKMAP_ADDR'; did you mean 'PCI_IO_ADDR'? [-Werror=implicit-function-declaration]
  address_markers[i++].start_address = PKMAP_ADDR(LAST_PKMAP);
                                       ^~~~~~~~~~
                                       PCI_IO_ADDR
../arch/powerpc/mm/dump_linuxpagetables.c:464:50: error: 'LAST_PKMAP' undeclared (first use in this function); did you mean 'LIST_HEAD'?
  address_markers[i++].start_address = PKMAP_ADDR(LAST_PKMAP);
                                                  ^~~~~~~~~~
                                                  LIST_HEAD



Thanks.

-- 
~Randy