[PATCHv6 01/11] lib/Kconfig.debug: Add ARCH_HAS_DEBUG_VIRTUAL

From: Laura Abbott
Date: Tue Jan 03 2017 - 12:23:32 EST



DEBUG_VIRTUAL currently depends on DEBUG_KERNEL && X86. arm64 is getting
the same support. Rather than add a list of architectures, switch this
to ARCH_HAS_DEBUG_VIRTUAL and let architectures select it as
appropriate.

Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>
Reviewed-by: Mark Rutland <mark.rutland@xxxxxxx>
Tested-by: Mark Rutland <mark.rutland@xxxxxxx>
Suggested-by: Mark Rutland <mark.rutland@xxxxxxx>
Signed-off-by: Laura Abbott <labbott@xxxxxxxxxx>
---
arch/x86/Kconfig | 1 +
lib/Kconfig.debug | 5 ++++-
2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e487493..f1d4e8f 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -46,6 +46,7 @@ config X86
select ARCH_CLOCKSOURCE_DATA
select ARCH_DISCARD_MEMBLOCK
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
+ select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_FAST_MULTIPLIER
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index b06848a..2aed316 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -622,9 +622,12 @@ config DEBUG_VM_PGFLAGS

If unsure, say N.

+config ARCH_HAS_DEBUG_VIRTUAL
+ bool
+
config DEBUG_VIRTUAL
bool "Debug VM translations"
- depends on DEBUG_KERNEL && X86
+ depends on DEBUG_KERNEL && ARCH_HAS_DEBUG_VIRTUAL
help
Enable some costly sanity checks in virtual to page code. This can
catch mistakes with virt_to_page() and friends.
--
2.7.4