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authorLinus Walleij <linus.walleij@linaro.org>2022-06-19 22:40:16 +0300
committerRussell King (Oracle) <rmk+kernel@armlinux.org.uk>2022-07-07 00:44:49 +0300
commit2bf6204240fddb22cc4940b9e3f40c538390212e (patch)
tree6e12235dc60c157a67ee6a64e944f5314055f561 /arch
parentcc45b836388f0ccc6831288a08f77a33845f10b0 (diff)
downloadlinux-2bf6204240fddb22cc4940b9e3f40c538390212e.tar.xz
ARM: 9212/1: domain: Modify Kconfig help text
After the removal of set_fs() the reference to set_fs() is stale. Alter the helptext to reflect what the config option really does. Fixes: 8ac6f5d7f84b ("ARM: 9113/1: uaccess: remove set_fs() implementation") Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mm/Kconfig6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index a3a4589ec73b..fc439c2c16f8 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -631,7 +631,11 @@ config CPU_USE_DOMAINS
bool
help
This option enables or disables the use of domain switching
- via the set_fs() function.
+ using the DACR (domain access control register) to protect memory
+ domains from each other. In Linux we use three domains: kernel, user
+ and IO. The domains are used to protect userspace from kernelspace
+ and to handle IO-space as a special type of memory by assigning
+ manager or client roles to running code (such as a process).
config CPU_V7M_NUM_IRQ
int "Number of external interrupts connected to the NVIC"