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author | Dan Williams <dan.j.williams@intel.com> | 2017-11-15 16:56:11 -0800 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2017-11-15 16:56:11 -0800 |
commit | 4247f24c23589bcc3bc3490515ef8c9497e9ae55 (patch) | |
tree | 89726a0e171c443a3e8def2992b56dbd8a21df21 /arch/powerpc/platforms/powernv/setup.c | |
parent | 79ab67ede21f536851a99ea68ee6fc1f5435e055 (diff) | |
parent | 9f586fff6574f6ecbf323f92d44ffaf0d96225fe (diff) |
Merge branch 'for-4.15/dax' into libnvdimm-for-next
Diffstat (limited to 'arch/powerpc/platforms/powernv/setup.c')
-rw-r--r-- | arch/powerpc/platforms/powernv/setup.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index 897aa1400eb8..bbb73aa0eb8f 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -272,7 +272,15 @@ static void pnv_kexec_cpu_down(int crash_shutdown, int secondary) #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE static unsigned long pnv_memory_block_size(void) { - return 256UL * 1024 * 1024; + /* + * We map the kernel linear region with 1GB large pages on radix. For + * memory hot unplug to work our memory block size must be at least + * this size. + */ + if (radix_enabled()) + return 1UL * 1024 * 1024 * 1024; + else + return 256UL * 1024 * 1024; } #endif |