aboutsummaryrefslogtreecommitdiff
path: root/mm
diff options
context:
space:
mode:
authorNathan Fontenot <nfont@linux.vnet.ibm.com>2013-09-27 10:18:09 -0500
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-10-03 17:21:38 +1000
commitf7e3334a6bcb42e7295a9bd9cb36ca4e6e4e66b4 (patch)
treef2518be51a9b38a51eff1b48402b1306341dfddb /mm
parent4b97280675f45c1650ee4e388bd711ecbb18c4b4 (diff)
downloadlinux-stericsson-f7e3334a6bcb42e7295a9bd9cb36ca4e6e4e66b4.tar.gz
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')
-rw-r--r--mm/Kconfig2
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