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-rw-r--r--arch/arm64/Kconfig57
1 files changed, 55 insertions, 2 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 839f48c26ef0..f3b584be76d7 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1,7 +1,6 @@
config ARM64
def_bool y
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
- select ARCH_HAS_OPP
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_SUPPORTS_ATOMIC_RMW
@@ -11,6 +10,8 @@ config ARM64
select ARM_AMBA
select ARM_ARCH_TIMER
select ARM_GIC
+ select AUDIT_ARCH_COMPAT_GENERIC
+ select ARM_GIC_V3
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS
select COMMON_CLK
@@ -29,10 +30,12 @@ config ARM64
select GENERIC_STRNLEN_USER
select GENERIC_TIME_VSYSCALL
select HARDIRQS_SW_RESEND
+ select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select HAVE_C_RECORDMCOUNT
+ select HAVE_CC_STACKPROTECTOR
select HAVE_DEBUG_BUGVERBOSE
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
@@ -63,6 +66,7 @@ config ARM64
select RTC_LIB
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
+ select HAVE_CONTEXT_TRACKING
help
ARM 64-bit (AArch64) Linux support.
@@ -155,14 +159,63 @@ endmenu
menu "Kernel Features"
+choice
+ prompt "Page size"
+ default ARM64_4K_PAGES
+ help
+ Page size (translation granule) configuration.
+
+config ARM64_4K_PAGES
+ bool "4KB"
+ help
+ This feature enables 4KB pages support.
+
config ARM64_64K_PAGES
- bool "Enable 64KB pages support"
+ bool "64KB"
help
This feature enables 64KB pages support (4KB by default)
allowing only two levels of page tables and faster TLB
look-up. AArch32 emulation is not available when this feature
is enabled.
+endchoice
+
+choice
+ prompt "Virtual address space size"
+ default ARM64_VA_BITS_39 if ARM64_4K_PAGES
+ default ARM64_VA_BITS_42 if ARM64_64K_PAGES
+ help
+ Allows choosing one of multiple possible virtual address
+ space sizes. The level of translation table is determined by
+ a combination of page size and virtual address space size.
+
+config ARM64_VA_BITS_39
+ bool "39-bit"
+ depends on ARM64_4K_PAGES
+
+config ARM64_VA_BITS_42
+ bool "42-bit"
+ depends on ARM64_64K_PAGES
+
+config ARM64_VA_BITS_48
+ bool "48-bit"
+ depends on BROKEN
+
+endchoice
+
+config ARM64_VA_BITS
+ int
+ default 39 if ARM64_VA_BITS_39
+ default 42 if ARM64_VA_BITS_42
+ default 48 if ARM64_VA_BITS_48
+
+config ARM64_PGTABLE_LEVELS
+ int
+ default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
+ default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
+ default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
+ default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
+
config CPU_BIG_ENDIAN
bool "Build big-endian kernel"
help