entry: Rename arch_check_user_regs() to arch_enter_from_user_mode()
arch_check_user_regs() is used at the moment to verify that struct pt_regs
contains valid values when entering the kernel from userspace. s390 needs
a place in the generic entry code to modify a cpu data structure when
switching from userspace to kernel mode. As arch_check_user_regs() is
exactly this, rename it to arch_enter_from_user_mode().
When entering the kernel from userspace, arch_check_user_regs() is
used to verify that struct pt_regs contains valid values. Note that
the NMI codepath doesn't call this function. s390 needs a place in the
generic entry code to modify a cpu data structure when switching from
userspace to kernel mode. As arch_check_user_regs() is exactly this,
rename it to arch_enter_from_user_mode().
Signed-off-by: Sven Schnelle <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Heiko Carstens <[email protected]>
diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index ab78bd4..c92ac75 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -63,7 +63,7 @@
ARCH_EXIT_TO_USER_MODE_WORK)
/**
- * arch_check_user_regs - Architecture specific sanity check for user mode regs
+ * arch_enter_from_user_mode - Architecture specific sanity check for user mode regs
* @regs: Pointer to currents pt_regs
*
* Defaults to an empty implementation. Can be replaced by architecture
@@ -73,10 +73,10 @@
* section. Use __always_inline so the compiler cannot push it out of line
* and make it instrumentable.
*/
-static __always_inline void arch_check_user_regs(struct pt_regs *regs);
+static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs);
-#ifndef arch_check_user_regs
-static __always_inline void arch_check_user_regs(struct pt_regs *regs) {}
+#ifndef arch_enter_from_user_mode
+static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs) {}
#endif
/**
