linux-next: build failure after merge of the akpm-current tree

Stephen Rothwell
2021-05-12T05:33:52Z

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Hi all,

After merging the akpm-current tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

In file included from arch/powerpc/include/asm/book3s/64/mmu-hash.h:20,
from arch/powerpc/include/asm/book3s/64/mmu.h:31,
from arch/powerpc/include/asm/mmu.h:402,
from arch/powerpc/include/asm/lppaca.h:46,
from arch/powerpc/include/asm/paca.h:17,
from arch/powerpc/include/asm/current.h:13,
from include/linux/thread_info.h:22,
from include/asm-generic/preempt.h:5,
from ./arch/powerpc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from include/linux/spinlock.h:51,
from include/linux/vmalloc.h:5,
from mm/ioremap.c:9:
arch/powerpc/include/asm/book3s/64/pgtable.h:246:21: error: initializer element is not constant
246 | #define PGDIR_SHIFT (PUD_SHIFT + PUD_INDEX_SIZE)
| ^
include/asm-generic/pgtable-nop4d.h:11:20: note: in expansion of macro 'PGDIR_SHIFT'
11 | #define P4D_SHIFT PGDIR_SHIFT
| ^~~~~~~~~~~
mm/ioremap.c:19:60: note: in expansion of macro 'P4D_SHIFT'
19 | static unsigned int __ro_after_init iomap_max_page_shift = P4D_SHIFT;
| ^~~~~~~~~

Caused by commit

9054fd6cce6c ("mm/ioremap: fix iomap_max_page_shift")

I have reverted that commit for today.

--
Cheers,
Stephen Rothwell

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