5 files changed, 20 insertions, 12 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 684e1f8b275..cd06ed7d842 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -27,10 +27,6 @@ config UID16
 	bool
 	default y
 
-config RWSEM_GENERIC_SPINLOCK
-	bool
-	default y
-
 config GENERIC_CALIBRATE_DELAY
 	bool
 	default y
@@ -40,6 +36,12 @@ config IRQ_RELEASE_METHOD
 	bool
 	default y
 
+menu "Host processor type and features"
+
+source "arch/i386/Kconfig.cpu"
+
+endmenu
+
 menu "UML-specific options"
 
 config MODE_TT
diff --git a/arch/um/Kconfig.x86_64 b/arch/um/Kconfig.x86_64
index bd35e59419c..aae19bc4b06 100644
--- a/arch/um/Kconfig.x86_64
+++ b/arch/um/Kconfig.x86_64
@@ -6,6 +6,11 @@ config 64BIT
 	bool
 	default y
 
+#XXX: this is so in the underlying arch, but it's wrong!!!
+config RWSEM_GENERIC_SPINLOCK
+	bool
+	default y
+
 config SEMAPHORE_SLEEPERS
 	bool
 	default y
diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 2ee8a285811..aef7c50f8e1 100644
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -29,6 +29,12 @@ endif
 
 CFLAGS += -U__$(SUBARCH)__ -U$(SUBARCH)
 
-ifneq ($(CONFIG_GPROF),y)
-ARCH_CFLAGS += -DUM_FASTCALL
-endif
+# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
+include $(srctree)/arch/i386/Makefile.cpu
+
+# prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
+cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
+
+CFLAGS += $(cflags-y)
+USER_CFLAGS += $(cflags-y)
+
diff --git a/arch/um/include/sysdep-i386/syscalls.h b/arch/um/include/sysdep-i386/syscalls.h
index a0d5b74d373..57bd79efbee 100644
--- a/arch/um/include/sysdep-i386/syscalls.h
+++ b/arch/um/include/sysdep-i386/syscalls.h
@@ -11,7 +11,6 @@ typedef long syscall_handler_t(struct pt_regs);
 /* Not declared on x86, incompatible declarations on x86_64, so these have
  * to go here rather than in sys_call_table.c
  */
-extern syscall_handler_t sys_ptrace;
 extern syscall_handler_t sys_rt_sigaction;
 
 extern syscall_handler_t old_mmap_i386;
diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c
index 4e08f7545d6..020ca79b8d3 100644
--- a/arch/um/kernel/time_kern.c
+++ b/arch/um/kernel/time_kern.c
@@ -22,10 +22,6 @@
 #include "mode.h"
 #include "os.h"
 
-u64 jiffies_64 = INITIAL_JIFFIES;
-
-EXPORT_SYMBOL(jiffies_64);
-
 int hz(void)
 {
 	return(HZ);