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-rw-r--r--Documentation/stable_api_nonsense.txt3
-rw-r--r--arch/i386/Kconfig14
-rw-r--r--arch/i386/Makefile4
-rw-r--r--include/asm-i386/module.h8
4 files changed, 2 insertions, 27 deletions
diff --git a/Documentation/stable_api_nonsense.txt b/Documentation/stable_api_nonsense.txt
index f39c9d714db..a2afca3b2ba 100644
--- a/Documentation/stable_api_nonsense.txt
+++ b/Documentation/stable_api_nonsense.txt
@@ -62,9 +62,6 @@ consider the following facts about the Linux kernel:
- different structures can contain different fields
- Some functions may not be implemented at all, (i.e. some locks
compile away to nothing for non-SMP builds.)
- - Parameter passing of variables from function to function can be
- done in different ways (the CONFIG_REGPARM option controls
- this.)
- Memory within the kernel can be aligned in different ways,
depending on the build options.
- Linux runs on a wide range of different processor architectures.
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index bb1fa061c6c..b6b2df40ca7 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -721,20 +721,6 @@ config BOOT_IOREMAP
depends on (((X86_SUMMIT || X86_GENERICARCH) && NUMA) || (X86 && EFI))
default y
-config REGPARM
- bool "Use register arguments"
- default y
- help
- Compile the kernel with -mregparm=3. This instructs gcc to use
- a more efficient function call ABI which passes the first three
- arguments of a function call via registers, which results in denser
- and faster code.
-
- If this option is disabled, then the default ABI of passing
- arguments via the stack is used.
-
- If unsure, say Y.
-
config SECCOMP
bool "Enable seccomp to safely compute untrusted bytecode"
depends on PROC_FS
diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index d1aca52bf69..f7ac1aea1d8 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -31,7 +31,7 @@ LDFLAGS_vmlinux := --emit-relocs
endif
CHECKFLAGS += -D__i386__
-CFLAGS += -pipe -msoft-float
+CFLAGS += -pipe -msoft-float -mregparm=3
# prevent gcc from keeping the stack 16 byte aligned
CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
@@ -39,8 +39,6 @@ CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
# CPU-specific tuning. Anything which can be shared with UML should go here.
include $(srctree)/arch/i386/Makefile.cpu
-cflags-$(CONFIG_REGPARM) += -mregparm=3
-
# temporary until string.h is fixed
cflags-y += -ffreestanding
diff --git a/include/asm-i386/module.h b/include/asm-i386/module.h
index fe5ae42e027..02f8f541cbe 100644
--- a/include/asm-i386/module.h
+++ b/include/asm-i386/module.h
@@ -62,18 +62,12 @@ struct mod_arch_specific
#error unknown processor family
#endif
-#ifdef CONFIG_REGPARM
-#define MODULE_REGPARM "REGPARM "
-#else
-#define MODULE_REGPARM ""
-#endif
-
#ifdef CONFIG_4KSTACKS
#define MODULE_STACKSIZE "4KSTACKS "
#else
#define MODULE_STACKSIZE ""
#endif
-#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_REGPARM MODULE_STACKSIZE
+#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_STACKSIZE
#endif /* _ASM_I386_MODULE_H */