Hello.
On 09-04-2012 20:04, Steven J. Hill wrote:
From: "Steven J. Hill"<sjhill@mips.com>
Signed-off-by: Leonid Yegoshin<yegoshin@mips.com>
Signed-off-by: Steven J. Hill<sjhill@mips.com>
---
arch/mips/Kconfig | 29 +++++++++++++++++++++++------
arch/mips/include/asm/cpu.h | 2 +-
arch/mips/kernel/cpu-probe.c | 4 ++++
arch/mips/kernel/traps.c | 1 +
4 files changed, 29 insertions(+), 7 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 991de91..fae33f3 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -282,6 +282,7 @@ config MIPS_MALTA
select SYS_HAS_CPU_MIPS32_R1
select SYS_HAS_CPU_MIPS32_R2
select SYS_HAS_CPU_MIPS64_R1
+ select SYS_HAS_CPU_MIPS64_R2
select SYS_HAS_CPU_NEVADA
select SYS_HAS_CPU_RM7000
select SYS_HAS_EARLY_PRINTK
@@ -1761,6 +1762,22 @@ config 64BIT
endchoice
+config 64BIT_PHYS_ADDR
+ bool "Kernel supports 64 bit physical addresses" if EXPERIMENTAL
+ depends on 64BIT
This option is selected on 32-bit CPUs like Alchemy, which has 36-bit
physical address. It will cause a warning about unmet direct dependencies then.
+ help
+ Defines 64 bit physical addresses in kernel.
+ Increases page table sizes.
+
+ It is an alternative for HIGHMEM usage of huge physical memory.
+ Requires 64bit capable CPU and 64 bit kernel code model.
No, it really doesn't.
+ Note: without this option kernel can support up to 4GB physical
+ memory for 4KB pages and up to 64GB for 64KB pages.
+
+config ARCH_PHYS_ADDR_T_64BIT
+ def_bool 64BIT_PHYS_ADDR
+
choice
prompt "Kernel page size"
default PAGE_SIZE_4KB
WBR, Sergei
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