diff options
| author | Arun KS <arunks@codeaurora.org> | 2018-03-19 15:04:03 +0530 |
|---|---|---|
| committer | Arun KS <arunks@codeaurora.org> | 2018-04-10 15:36:39 +0530 |
| commit | 684b489a31e4b0190c3e68aad64351c37b07a987 (patch) | |
| tree | f6c92f09d1dfa488d14c4082acc80f08f5d2222d /arch | |
| parent | ef00227cce638b1ca8bd8c04d342a8688b7400e9 (diff) | |
arm64: Make section size configurable for hotplug
On arm64, currently section size is hard-coded to 1G.
Make this configurable if hotplug is enabled to support
more finer granularity for hotplug-able memory.
Change-Id: I5327ead37069176f4ba34657133fab303fb15b82
Signed-off-by: Arun KS <arunks@codeaurora.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/Kconfig | 10 | ||||
| -rw-r--r-- | arch/arm64/include/asm/sparsemem.h | 4 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 89e6a3df6dbf..3e3d509c3c03 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -203,6 +203,16 @@ config NEED_SG_DMA_LENGTH config SMP def_bool y +config HOTPLUG_SIZE_BITS + int "Memory hotplug block size(28 => 256MB 30 => 1GB)" + depends on SPARSEMEM + default 30 + help + Selects granularity of hotplug memory. Block + size for memory hotplug is represent as a power + of 2. + If unsure, stick with default value. + config ARM64_DMA_USE_IOMMU bool select ARM_HAS_SG_CHAIN diff --git a/arch/arm64/include/asm/sparsemem.h b/arch/arm64/include/asm/sparsemem.h index 74a9d301819f..81c69fe1adc0 100644 --- a/arch/arm64/include/asm/sparsemem.h +++ b/arch/arm64/include/asm/sparsemem.h @@ -18,7 +18,11 @@ #ifdef CONFIG_SPARSEMEM #define MAX_PHYSMEM_BITS 48 +#ifndef CONFIG_MEMORY_HOTPLUG #define SECTION_SIZE_BITS 30 +#else +#define SECTION_SIZE_BITS CONFIG_HOTPLUG_SIZE_BITS +#endif #endif #endif |