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authorAdrian Bunk <bunk@stusta.de>2006-12-07 02:14:12 +0100
committerAndi Kleen <andi@basil.nowhere.org>2006-12-07 02:14:12 +0100
commita1a70c25bed75ed36ed48bbe18b9029428d2452d (patch)
tree0ab9fcebc25f9f71be61f91bfca96aa1e0585a0d /arch/i386
parent73ad8355d7db6a3cdcf313d4a4586a8f81b19c2f (diff)
downloadlinux-a1a70c25bed75ed36ed48bbe18b9029428d2452d.tar.bz2
[PATCH] i386: always enable regparm
-mregparm=3 has been enabled by default for some time on i386, and AFAIK there aren't any problems with it left. This patch removes the REGPARM config option and sets -mregparm=3 unconditionally. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/i386')
-rw-r--r--arch/i386/Kconfig14
-rw-r--r--arch/i386/Makefile4
2 files changed, 1 insertions, 17 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index bb1fa061c6cf..b6b2df40ca78 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 d1aca52bf690..f7ac1aea1d8a 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