Kconfig option PHYS_64BIT sets the size of phys_addr_t to 64 bits, which
allows support for a 36-bit physical address space. With this option, the
kernel can support more than 2GB of RAM, but the larger address size
impacts performance slightly.
By including "select PHYS_64BIT" in the Kconfig for a particular board,
that option is forced enabled, and it becomes impossible to create a 32-bit
kernel. Instead, we should depend on the defconfig to enable this option.
We still build a 36-bit kernel by default, and we also allow users to build
32-bit kernels if they really want.
Signed-off-by: Timur Tabi <ti...@freescale.com>
---
arch/powerpc/platforms/85xx/Kconfig | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/Kconfig
b/arch/powerpc/platforms/85xx/Kconfig
index 12f5932..dddada4 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -80,7 +80,6 @@ config P1010_RDB
config P1022_DS
bool "Freescale P1022 DS"
select DEFAULT_UIMAGE
- select PHYS_64BIT # The DTS has 36-bit addresses
select SWIOTLB
help
This option enables support for the Freescale P1022DS reference board.
--
1.7.3.4
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