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| author | Nathan Fontenot <nfont@linux.vnet.ibm.com> | 2013-09-27 10:18:09 -0500 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-03 17:21:38 +1000 |
| commit | f7e3334a6bcb42e7295a9bd9cb36ca4e6e4e66b4 (patch) | |
| tree | f2518be51a9b38a51eff1b48402b1306341dfddb /mm/Kconfig | |
| parent | 4b97280675f45c1650ee4e388bd711ecbb18c4b4 (diff) | |
| download | lwn-f7e3334a6bcb42e7295a9bd9cb36ca4e6e4e66b4.tar.gz lwn-f7e3334a6bcb42e7295a9bd9cb36ca4e6e4e66b4.zip | |
powerpc: Fix memory hotplug with sparse vmemmap
Previous commit 46723bfa540... introduced a new config option
HAVE_BOOTMEM_INFO_NODE that ended up breaking memory hot-remove for ppc
when sparse vmemmap is not defined.
This patch defines HAVE_BOOTMEM_INFO_NODE for ppc and adds the call to
register_page_bootmem_info_node. Without this we get a BUG_ON for memory
hot remove in put_page_bootmem().
This also adds a stub for register_page_bootmem_memmap to allow ppc to build
with sparse vmemmap defined. Leaving this as a stub is fine since the same
vmemmap addresses are also handled in vmemmap_populate and as such are
properly mapped.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org> [v3.9+]
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 026771a9b097..394838f489eb 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -183,7 +183,7 @@ config MEMORY_HOTPLUG_SPARSE config MEMORY_HOTREMOVE bool "Allow for memory hot remove" select MEMORY_ISOLATION - select HAVE_BOOTMEM_INFO_NODE if X86_64 + select HAVE_BOOTMEM_INFO_NODE if (X86_64 || PPC64) depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE depends on MIGRATION |