* [PATCH] powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y
@ 2017-02-15 10:54 Michael Ellerman
2017-02-16 5:59 ` Michael Ellerman
0 siblings, 1 reply; 2+ messages in thread
From: Michael Ellerman @ 2017-02-15 10:54 UTC (permalink / raw)
To: linuxppc-dev
The recently merged HPT (Hash Page Table) resize support broke the build
when BOOK3S_64=n (ie. 32-bit or 64-bit Book3E) and MEMORY_HOTPLUG=y:
arch/powerpc/mm/mem.o: In function `.arch_add_memory':
(.text+0x4e4): undefined reference to `.resize_hpt_for_hotplug'
Fix it by adding a dummy version.
Fixes: 438cc81a41e8 ("powerpc/pseries: Automatically resize HPT for memory hot add/remove")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/include/asm/sparsemem.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/sparsemem.h b/arch/powerpc/include/asm/sparsemem.h
index 737335c891e4..c88930c9db7f 100644
--- a/arch/powerpc/include/asm/sparsemem.h
+++ b/arch/powerpc/include/asm/sparsemem.h
@@ -16,9 +16,15 @@
#endif /* CONFIG_SPARSEMEM */
#ifdef CONFIG_MEMORY_HOTPLUG
-extern void resize_hpt_for_hotplug(unsigned long new_mem_size);
extern int create_section_mapping(unsigned long start, unsigned long end);
extern int remove_section_mapping(unsigned long start, unsigned long end);
+
+#ifdef CONFIG_PPC_BOOK3S_64
+extern void resize_hpt_for_hotplug(unsigned long new_mem_size);
+#else
+static inline void resize_hpt_for_hotplug(unsigned long new_mem_size) { }
+#endif
+
#ifdef CONFIG_NUMA
extern int hot_add_scn_to_nid(unsigned long scn_addr);
#else
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y
2017-02-15 10:54 [PATCH] powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y Michael Ellerman
@ 2017-02-16 5:59 ` Michael Ellerman
0 siblings, 0 replies; 2+ messages in thread
From: Michael Ellerman @ 2017-02-16 5:59 UTC (permalink / raw)
To: Michael Ellerman, linuxppc-dev
On Wed, 2017-02-15 at 10:54:37 UTC, Michael Ellerman wrote:
> The recently merged HPT (Hash Page Table) resize support broke the build
> when BOOK3S_64=n (ie. 32-bit or 64-bit Book3E) and MEMORY_HOTPLUG=y:
>
> arch/powerpc/mm/mem.o: In function `.arch_add_memory':
> (.text+0x4e4): undefined reference to `.resize_hpt_for_hotplug'
>
> Fix it by adding a dummy version.
>
> Fixes: 438cc81a41e8 ("powerpc/pseries: Automatically resize HPT for memory hot add/remove")
> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Applied to powerpc next.
https://git.kernel.org/powerpc/c/36b390fd624a7f3a64bda5de54fa58
cheers
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