Update from upstream with manual merge of Yasunori Goto's

changes to swiotlb.c made in commit 281dd25cdc0d6903929b79183816d151ea626341
since this file has been moved from arch/ia64/lib/swiotlb.c to
lib/swiotlb.c

Signed-off-by: Tony Luck <tony.luck@intel.com>

7 files changed, 2 insertions, 135 deletions

diff --git a/arch/um/kernel/skas/Makefile b/arch/um/kernel/skas/Makefile
index db36c7c9594..8de471b59c1 100644
--- a/arch/um/kernel/skas/Makefile
+++ b/arch/um/kernel/skas/Makefile
@@ -6,8 +6,6 @@
 obj-y := clone.o exec_kern.o mem.o mem_user.o mmu.o process.o process_kern.o \
 	syscall.o tlb.o trap_user.o uaccess.o
 
-subdir- := util
-
 USER_OBJS := process.o clone.o
 
 include arch/um/scripts/Makefile.rules
diff --git a/arch/um/kernel/skas/include/mode_kern-skas.h b/arch/um/kernel/skas/include/mode_kern-skas.h
index e4849002811..c97a80dfe37 100644
--- a/arch/um/kernel/skas/include/mode_kern-skas.h
+++ b/arch/um/kernel/skas/include/mode_kern-skas.h
@@ -11,7 +11,7 @@
 #include "asm/ptrace.h"
 
 extern void flush_thread_skas(void);
-extern void *switch_to_skas(void *prev, void *next);
+extern void switch_to_skas(void *prev, void *next);
 extern void start_thread_skas(struct pt_regs *regs, unsigned long eip,
 			      unsigned long esp);
 extern int copy_thread_skas(int nr, unsigned long clone_flags,
diff --git a/arch/um/kernel/skas/include/uaccess-skas.h b/arch/um/kernel/skas/include/uaccess-skas.h
index 6ee3f3902e6..7da0c2def0e 100644
--- a/arch/um/kernel/skas/include/uaccess-skas.h
+++ b/arch/um/kernel/skas/include/uaccess-skas.h
@@ -18,12 +18,6 @@
 	  ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
 	  ((unsigned long) (addr) + (size) >= (unsigned long)(addr))))
 
-static inline int verify_area_skas(int type, const void __user * addr,
-                                   unsigned long size)
-{
-	return(access_ok_skas(type, addr, size) ? 0 : -EFAULT);
-}
-
 extern int copy_from_user_skas(void *to, const void __user *from, int n);
 extern int copy_to_user_skas(void __user *to, const void *from, int n);
 extern int strncpy_from_user_skas(char *dst, const char __user *src, int count);
diff --git a/arch/um/kernel/skas/process_kern.c b/arch/um/kernel/skas/process_kern.c
index 3d1b227226e..efe92e8aa2a 100644
--- a/arch/um/kernel/skas/process_kern.c
+++ b/arch/um/kernel/skas/process_kern.c
@@ -24,7 +24,7 @@
 #include "proc_mm.h"
 #include "registers.h"
 
-void *switch_to_skas(void *prev, void *next)
+void switch_to_skas(void *prev, void *next)
 {
 	struct task_struct *from, *to;
 
@@ -35,16 +35,11 @@ void *switch_to_skas(void *prev, void *next)
 	if(current->pid == 0)
 		switch_timers(0);
 
-	to->thread.prev_sched = from;
-	set_current(to);
-
 	switch_threads(&from->thread.mode.skas.switch_buf, 
 		       to->thread.mode.skas.switch_buf);
 
 	if(current->pid == 0)
 		switch_timers(1);
-
-	return(current->thread.prev_sched);
 }
 
 extern void schedule_tail(struct task_struct *prev);
diff --git a/arch/um/kernel/skas/util/Makefile b/arch/um/kernel/skas/util/Makefile
deleted file mode 100644
index f7b7eba8334..00000000000
--- a/arch/um/kernel/skas/util/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-hostprogs-y		:= mk_ptregs
-always			:= $(hostprogs-y)
-
-mk_ptregs-objs := mk_ptregs-$(SUBARCH).o
-HOSTCFLAGS_mk_ptregs-$(SUBARCH).o := -I$(objtree)/arch/um
diff --git a/arch/um/kernel/skas/util/mk_ptregs-i386.c b/arch/um/kernel/skas/util/mk_ptregs-i386.c
deleted file mode 100644
index 1f96e1eeb8a..00000000000
--- a/arch/um/kernel/skas/util/mk_ptregs-i386.c
+++ /dev/null
@@ -1,49 +0,0 @@
-#include <stdio.h>
-#include <user-offsets.h>
-
-#define SHOW(name) printf("#define %s %d\n", #name, name)
-
-int main(int argc, char **argv)
-{
-	printf("/* Automatically generated by "
-	       "arch/um/kernel/skas/util/mk_ptregs */\n");
-	printf("\n");
-	printf("#ifndef __SKAS_PT_REGS_\n");
-	printf("#define __SKAS_PT_REGS_\n");
-	printf("\n");
-	SHOW(HOST_FRAME_SIZE);
-	SHOW(HOST_FP_SIZE);
-	SHOW(HOST_XFP_SIZE);
-
-	SHOW(HOST_IP);
-	SHOW(HOST_SP);
-	SHOW(HOST_EFLAGS);
-	SHOW(HOST_EAX);
-	SHOW(HOST_EBX);
-	SHOW(HOST_ECX);
-	SHOW(HOST_EDX);
-	SHOW(HOST_ESI);
-	SHOW(HOST_EDI);
-	SHOW(HOST_EBP);
-	SHOW(HOST_CS);
-	SHOW(HOST_SS);
-	SHOW(HOST_DS);
-	SHOW(HOST_FS);
-	SHOW(HOST_ES);
-	SHOW(HOST_GS);
-
-	printf("\n");
-	printf("#endif\n");
-	return(0);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c b/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
deleted file mode 100644
index 5fccbfe35f7..00000000000
--- a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-
-#include <stdio.h>
-#include <user-offsets.h>
-
-#define SHOW(name) \
-	printf("#define %s (%d / sizeof(unsigned long))\n", #name, name)
-
-int main(int argc, char **argv)
-{
-	printf("/* Automatically generated by "
-	       "arch/um/kernel/skas/util/mk_ptregs */\n");
-	printf("\n");
-	printf("#ifndef __SKAS_PT_REGS_\n");
-	printf("#define __SKAS_PT_REGS_\n");
-	SHOW(HOST_FRAME_SIZE);
-	SHOW(HOST_RBX);
-	SHOW(HOST_RCX);
-	SHOW(HOST_RDI);
-	SHOW(HOST_RSI);
-	SHOW(HOST_RDX);
-	SHOW(HOST_RBP);
-	SHOW(HOST_RAX);
-	SHOW(HOST_R8);
-	SHOW(HOST_R9);
-	SHOW(HOST_R10);
-	SHOW(HOST_R11);
-	SHOW(HOST_R12);
-	SHOW(HOST_R13);
-	SHOW(HOST_R14);
-	SHOW(HOST_R15);
-	SHOW(HOST_ORIG_RAX);
-	SHOW(HOST_CS);
-	SHOW(HOST_SS);
-	SHOW(HOST_EFLAGS);
-#if 0
-	SHOW(HOST_FS);
-	SHOW(HOST_GS);
-	SHOW(HOST_DS);
-	SHOW(HOST_ES);
-#endif
-
-	SHOW(HOST_IP);
-	SHOW(HOST_SP);
-	printf("#define HOST_FP_SIZE 0\n");
-	printf("#define HOST_XFP_SIZE 0\n");
-	printf("\n");
-	printf("\n");
-	printf("#endif\n");
-	return(0);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */