AuxXxilium/linux_dsm_epyc7002
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8bc0868998
linux_dsm_epyc7002/arch/powerpc
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Ben Hutchings 8bc0868998 powerpc/mm: Only define MAX_PHYSMEM_BITS in SPARSEMEM configurations 
MAX_PHYSMEM_BITS only needs to be defined if CONFIG_SPARSEMEM is
enabled, and that was the case before commit 4ffe713b75
("powerpc/mm: Increase the max addressable memory to 2PB").

On 32-bit systems, where CONFIG_SPARSEMEM is not enabled, we now
define it as 46.  That is larger than the real number of physical
address bits, and breaks calculations in zsmalloc:

  mm/zsmalloc.c:130:49: warning: right shift count is negative
    MAX(32, (ZS_MAX_PAGES_PER_ZSPAGE << PAGE_SHIFT >> OBJ_INDEX_BITS))
                                                   ^~
  ...
  mm/zsmalloc.c:253:21: error: variably modified 'size_class' at file scope
    struct size_class *size_class[ZS_SIZE_CLASSES];
                       ^~~~~~~~~~

Fixes: 4ffe713b75 ("powerpc/mm: Increase the max addressable memory to 2PB")
Cc: stable@vger.kernel.org # v4.20+
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-03-21 00:16:45 +11:00
..
boot Kbuild updates for v5.1 2019-03-10 17:48:21 -07:00
configs powerpc fixes for 5.1 #2 2019-03-16 10:45:17 -07:00
crypto
include powerpc/mm: Only define MAX_PHYSMEM_BITS in SPARSEMEM configurations 2019-03-21 00:16:45 +11:00
kernel powerpc/6xx: fix setup and use of SPRN_SPRG_PGDIR for hash32 2019-03-19 00:30:19 +11:00
kvm ARM: some cleanups, direct physical timer assignment, cache sanitization 2019-03-15 15:00:28 -07:00
lib treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
math-emu
mm powerpc/6xx: fix setup and use of SPRN_SPRG_PGDIR for hash32 2019-03-19 00:30:19 +11:00
net powerpc updates for 5.1 2019-03-07 12:56:26 -08:00
oprofile
perf powerpc updates for 5.1 2019-03-07 12:56:26 -08:00
platforms device-dax for 5.1 2019-03-16 13:05:32 -07:00
purgatory
sysdev treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
tools
xmon powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc 2019-02-26 23:55:22 +11:00
Kbuild
Kconfig DMA mapping updates for 5.1 2019-03-10 11:54:48 -07:00
Kconfig.debug powerpc: Move page table dump files in a dedicated subdirectory 2019-02-22 22:29:22 +11:00
Makefile powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU 2019-02-23 22:31:40 +11:00
Makefile.postlink