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Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core...
[platform/adaptation/renesas_rcar/renesas_kernel.git]
/
arch
/
x86
/
Kconfig.debug
diff --git
a/arch/x86/Kconfig.debug
b/arch/x86/Kconfig.debug
index
ae36bfa
..
85a87d2
100644
(file)
--- a/
arch/x86/Kconfig.debug
+++ b/
arch/x86/Kconfig.debug
@@
-5,13
+5,15
@@
config TRACE_IRQFLAGS_SUPPORT
source "lib/Kconfig.debug"
source "lib/Kconfig.debug"
-config
NONPROMISC
_DEVMEM
+config
STRICT
_DEVMEM
bool "Filter access to /dev/mem"
help
bool "Filter access to /dev/mem"
help
- If this option is left o
ff, you allow userspace
access to all
+ If this option is left o
n, you allow userspace (root)
access to all
of memory, including kernel and userspace memory. Accidental
access to this is obviously disastrous, but specific access can
of memory, including kernel and userspace memory. Accidental
access to this is obviously disastrous, but specific access can
- be used by people debugging the kernel.
+ be used by people debugging the kernel. Note that with PAT support
+ enabled, even in this case there are restrictions on /dev/mem
+ use due to the cache aliasing requirements.
If this option is switched on, the /dev/mem file only allows
userspace access to PCI space and the BIOS code and data regions.
If this option is switched on, the /dev/mem file only allows
userspace access to PCI space and the BIOS code and data regions.
@@
-287,7
+289,6
@@
config CPA_DEBUG
config OPTIMIZE_INLINING
bool "Allow gcc to uninline functions marked 'inline'"
config OPTIMIZE_INLINING
bool "Allow gcc to uninline functions marked 'inline'"
- depends on BROKEN
help
This option determines if the kernel forces gcc to inline the functions
developers have marked 'inline'. Doing so takes away freedom from gcc to
help
This option determines if the kernel forces gcc to inline the functions
developers have marked 'inline'. Doing so takes away freedom from gcc to
@@
-298,5
+299,7
@@
config OPTIMIZE_INLINING
become the default in the future, until then this option is there to
test gcc for this.
become the default in the future, until then this option is there to
test gcc for this.
+ If unsure, say N.
+
endmenu
endmenu