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UML - Throw out CONFIG_MODE_TT

PATCH New Jeff Dike 1 participant 1 message Aug 14, 2007

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Jeff Dike

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PATCH 1/14 UML - Throw out CONFIG_MODE_TT

Start getting rid of tt mode support.

This patch throws out CONFIG_MODE_TT and all config options, code, and files which depend on it.

CONFIG_MODE_SKAS is gone and everything that depends on it is included unconditionally.

The few changed lines are in re-written Kconfig help, lines which needed something skas-related removed from them, and a few more which weren't strictly deletions.

--

 arch/um/Kconfig                          |   64 ----
 arch/um/Kconfig.char                     |    2 
 arch/um/Kconfig.debug                    |   23 -
 arch/um/Makefile                         |   26 -
 arch/um/Makefile-i386                    |    6 
 arch/um/defconfig                        |    2 
 arch/um/drivers/mconsole_kern.c          |   15 -
 arch/um/include/as-layout.h              |    1 
 arch/um/include/choose-mode.h            |   18 -
 arch/um/include/common-offsets.h         |    3 
 arch/um/include/irq_user.h               |    4 
 arch/um/include/kern_util.h              |    6 
 arch/um/include/mode.h                   |   19 -
 arch/um/include/mode_kern.h              |    6 
 arch/um/include/os.h                     |   26 -
 arch/um/include/sysdep-i386/ptrace.h     |   23 -
 arch/um/include/sysdep-i386/sigcontext.h |    4 
 arch/um/include/sysdep-i386/thread.h     |    3 
 arch/um/include/sysdep-x86_64/ptrace.h   |   21 -
 arch/um/include/sysdep-x86_64/thread.h   |    4 
 arch/um/include/tt/debug.h               |   18 -
 arch/um/include/tt/mmu-tt.h              |   12 
 arch/um/include/tt/mode-tt.h             |   23 -
 arch/um/include/tt/mode_kern_tt.h        |   40 --
 arch/um/include/tt/tt.h                  |   37 --
 arch/um/include/tt/uaccess-tt.h          |   46 ---
 arch/um/include/um_mmu.h                 |   23 -
 arch/um/include/um_uaccess.h             |    8 
 arch/um/kernel/Makefile                  |    5 
 arch/um/kernel/dyn.lds.S                 |    2 
 arch/um/kernel/exec.c                    |    1 
 arch/um/kernel/init_task.c               |    7 
 arch/um/kernel/irq.c                     |   24 -
 arch/um/kernel/ksyms.c                   |   10 
 arch/um/kernel/process.c                 |    7 
 arch/um/kernel/reboot.c                  |   19 -
 arch/um/kernel/smp.c                     |    5 
 arch/um/kernel/trap.c                    |    2 
 arch/um/kernel/tt/Makefile               |   14 
 arch/um/kernel/tt/exec_kern.c            |   84 -----
 arch/um/kernel/tt/exec_user.c            |   56 ---
 arch/um/kernel/tt/gdb.c                  |  280 ------------------
 arch/um/kernel/tt/gdb_kern.c             |   40 --
 arch/um/kernel/tt/include/mode-tt.h      |   34 --
 arch/um/kernel/tt/ksyms.c                |   29 -
 arch/um/kernel/tt/mem.c                  |   34 --
 arch/um/kernel/tt/mem_user.c             |   49 ---
 arch/um/kernel/tt/process_kern.c         |  461 -------------------------------
 arch/um/kernel/tt/ptproxy/Makefile       |   10 
 arch/um/kernel/tt/ptproxy/proxy.c        |  377 -------------------------
 arch/um/kernel/tt/ptproxy/ptproxy.h      |   61 ----
 arch/um/kernel/tt/ptproxy/ptrace.c       |  237 ---------------
 arch/um/kernel/tt/ptproxy/sysdep.c       |   70 ----
 arch/um/kernel/tt/ptproxy/sysdep.h       |   25 -
 arch/um/kernel/tt/ptproxy/wait.c         |   85 -----
 arch/um/kernel/tt/ptproxy/wait.h         |   15 -
 arch/um/kernel/tt/syscall_kern.c         |   46 ---
 arch/um/kernel/tt/syscall_user.c         |   60 ----
 arch/um/kernel/tt/tlb.c                  |  120 --------
 arch/um/kernel/tt/tracer.c               |  461 -------------------------------
 arch/um/kernel/tt/trap_user.c            |   70 ----
 arch/um/kernel/tt/uaccess.c              |   73 ----
 arch/um/kernel/tt/uaccess_user.c         |  105 -------
 arch/um/kernel/um_arch.c                 |  113 -------
 arch/um/kernel/uml.lds.S                 |    7 
 arch/um/os-Linux/Makefile                |    7 
 arch/um/os-Linux/main.c                  |   32 --
 arch/um/os-Linux/process.c               |   31 --
 arch/um/os-Linux/start_up.c              |   10 
 arch/um/os-Linux/sys-i386/Makefile       |    2 
 arch/um/os-Linux/sys-x86_64/Makefile     |    2 
 arch/um/os-Linux/time.c                  |   19 -
 arch/um/os-Linux/tls.c                   |   36 --
 arch/um/scripts/Makefile.rules           |    2 
 arch/um/sys-i386/Makefile                |   10 
 arch/um/sys-i386/ldt.c                   |   67 ----
 arch/um/sys-i386/ptrace.c                |  120 --------
 arch/um/sys-i386/ptrace_user.c           |   86 -----
 arch/um/sys-i386/signal.c                |   58 ---
 arch/um/sys-i386/tls.c                   |   16 -
 arch/um/sys-i386/unmap.c                 |   25 -
 arch/um/sys-x86_64/Makefile              |    9 
 arch/um/sys-x86_64/signal.c              |   50 ---
 arch/um/sys-x86_64/syscalls.c            |   31 --
 arch/um/sys-x86_64/unmap.c               |   25 -
 include/asm-um/mmu_context.h             |    6 
 include/asm-um/processor-generic.h       |   14 
 87 files changed, 35 insertions(+), 4204 deletions(-)
arch/um/Kconfig +10 -54
Index: linux-2.6.22/arch/um/Kconfig
===================================================================
@@ -62,55 +62,16 @@ config IRQ_RELEASE_METHOD
 
 menu "UML-specific options"
 
-config MODE_TT
-	bool "Tracing thread support (DEPRECATED)"
-	default n
-	depends on BROKEN
-	help
-	This option controls whether tracing thread support is compiled
-	into UML. This option is largely obsolete, given that skas0 provides
-	skas security and performance without needing to patch the host.
-	It is safe to say 'N' here; saying 'Y' may cause additional problems
-	with the resulting binary even if you run UML in SKAS mode, and running
-	in TT mode is strongly *NOT RECOMMENDED*.
-
 config STATIC_LINK
 	bool "Force a static link"
 	default n
-	depends on !MODE_TT
 	help
-	If CONFIG_MODE_TT is disabled, then this option gives you the ability
-	to force a static link of UML.  Normally, if only skas mode is built
-	in to UML, it will be linked as a shared binary.  This is inconvenient
-	for use in a chroot jail.  So, if you intend to run UML inside a
-	chroot, and you disable CONFIG_MODE_TT, you probably want to say Y
-	here.
+	This option gives you the ability to force a static link of UML.
+	Normally, UML is linked as a shared binary.  This is inconvenient for
+	use in a chroot jail.  So, if you intend to run UML inside a chroot,
+	you probably want to say Y here.
 	Additionally, this option enables using higher memory spaces (up to
-	2.75G) for UML - disabling CONFIG_MODE_TT and enabling this option leads
-	to best results for this.
-
-config KERNEL_HALF_GIGS
-	int "Kernel address space size (in .5G units)"
-	default "1"
-	depends on MODE_TT
-	help
-        This determines the amount of address space that UML will allocate for
-        its own, measured in half Gigabyte units.  The default is 1.
-        Change this only if you need to boot UML with an unusually large amount
-        of physical memory.
-
-config MODE_SKAS
-	bool "Separate Kernel Address Space support" if MODE_TT
-	default y
-	help
-	This option controls whether skas (separate kernel address space)
-	support is compiled in.
-	Unless you have specific needs to use TT mode (which applies almost only
-	to developers), you should say Y here.
-	SKAS mode will make use of the SKAS3 patch if it is applied on the host
-	(and your UML will run in SKAS3 mode), but if no SKAS patch is applied
-	on the host it will run in SKAS0 mode, which is anyway faster than TT
-	mode.
+	2.75G) for UML.
 
 source "arch/um/Kconfig.arch"
 source "mm/Kconfig"
@@ -118,7 +79,7 @@ source "mm/Kconfig"
 config LD_SCRIPT_STATIC
 	bool
 	default y
-	depends on MODE_TT || STATIC_LINK
+	depends on STATIC_LINK
 
 config LD_SCRIPT_DYN
 	bool
@@ -220,7 +181,7 @@ config SMP
 	bool "Symmetric multi-processing support (EXPERIMENTAL)"
 	default n
 	#SMP_BROKEN is for x86_64.
-	depends on MODE_TT && EXPERIMENTAL && (!SMP_BROKEN || (BROKEN && SMP_BROKEN))
+	depends on EXPERIMENTAL && (!SMP_BROKEN || (BROKEN && SMP_BROKEN))
 	help
 	This option enables UML SMP support.
 	It is NOT related to having a real SMP box. Not directly, at least.
@@ -258,11 +219,6 @@ config NEST_LEVEL
         inside another UML, set CONFIG_NEST_LEVEL to one more than the host
         UML.
 
-        Note that if the hosting UML has its CONFIG_KERNEL_HALF_GIGS set to
-        greater than one, then the guest UML should have its CONFIG_NEST_LEVEL
-        set to the host's CONFIG_NEST_LEVEL + CONFIG_KERNEL_HALF_GIGS.
-        Only change this if you are running nested UMLs.
-
 config HIGHMEM
 	bool "Highmem support (EXPERIMENTAL)"
 	depends on !64BIT && EXPERIMENTAL
@@ -271,9 +227,9 @@ config HIGHMEM
 	This was used to allow UML to run with big amounts of memory.
 	Currently it is unstable, so if unsure say N.
 
-	To use big amounts of memory, it is recommended to disable TT mode (i.e.
-	CONFIG_MODE_TT) and enable static linking (i.e. CONFIG_STATIC_LINK) -
-	this should allow the guest to use up to 2.75G of memory.
+	To use big amounts of memory, it is recommended enable static
+	linking (i.e. CONFIG_STATIC_LINK) - this should allow the
+	guest to use up to 2.75G of memory.
 
 config KERNEL_STACK_ORDER
 	int "Kernel stack size order"
arch/um/Makefile +6 -20
Index: linux-2.6.22/arch/um/Makefile
===================================================================
@@ -31,18 +31,9 @@ SYMLINK_HEADERS := $(foreach header,$(SY
 ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
 	$(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h
 
-um-modes-$(CONFIG_MODE_TT) += tt
-um-modes-$(CONFIG_MODE_SKAS) += skas
+MODE_INCLUDE	+= -I$(srctree)/$(ARCH_DIR)/include/skas
 
-MODE_INCLUDE	+= $(foreach mode,$(um-modes-y),\
-		   -I$(srctree)/$(ARCH_DIR)/include/$(mode))
-
-MAKEFILES-INCL	+= $(foreach mode,$(um-modes-y),\
-		   $(srctree)/$(ARCH_DIR)/Makefile-$(mode))
-
-ifneq ($(MAKEFILES-INCL),)
-  include $(MAKEFILES-INCL)
-endif
+include $(srctree)/$(ARCH_DIR)/Makefile-skas
 
 ARCH_INCLUDE	:= -I$(ARCH_DIR)/include
 ifneq ($(KBUILD_SRC),)
@@ -59,7 +50,7 @@ SYS_DIR		:= $(ARCH_DIR)/include/sysdep-$
 # These apply to USER_CFLAGS to.
 
 CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\"	\
-	$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap	\
+	$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
 	-Din6addr_loopback=kernel_in6addr_loopback \
 	-Din6addr_any=kernel_in6addr_any
 
@@ -89,9 +80,8 @@ CFLAGS += $(call cc-option,-fno-unit-at-
 # included; the values here are meaningless
 
 CONFIG_NEST_LEVEL ?= 0
-CONFIG_KERNEL_HALF_GIGS ?= 0
 
-SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
+SIZE = ($(CONFIG_NEST_LEVEL) * 0x20000000)
 
 PHONY += linux
 
@@ -124,7 +114,6 @@ CFLAGS_NO_HARDENING := $(call cc-option,
 	$(call cc-option, -fno-stack-protector,) \
 	$(call cc-option, -fno-stack-protector-all,)
 
-CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
 CONFIG_KERNEL_STACK_ORDER ?= 2
 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
 
@@ -132,11 +121,8 @@ ifndef START
   START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
 endif
 
-CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
-	-DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
-	-DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \
-	-DKERNEL_STACK_SIZE=$(STACK_SIZE) \
-	-DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap.o
+CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
+	-DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE)
 
 #The wrappers will select whether using "malloc" or the kernel allocator.
 LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
arch/um/kernel/Makefile +1 -4
Index: linux-2.6.22/arch/um/kernel/Makefile
===================================================================
@@ -9,15 +9,12 @@ clean-files :=
 obj-y = config.o exec.o exitcode.o init_task.o irq.o ksyms.o mem.o \
 	physmem.o process.o ptrace.o reboot.o sigio.o \
 	signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o uaccess.o \
-	um_arch.o umid.o
+	um_arch.o umid.o skas/
 
 obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
 obj-$(CONFIG_GPROF)	+= gprof_syms.o
 obj-$(CONFIG_GCOV)	+= gmon_syms.o
 
-obj-$(CONFIG_MODE_TT) += tt/
-obj-$(CONFIG_MODE_SKAS) += skas/
-
 USER_OBJS := config.o
 
 include arch/um/scripts/Makefile.rules
arch/um/os-Linux/Makefile +1 -6
Index: linux-2.6.22/arch/um/os-Linux/Makefile
===================================================================
@@ -5,12 +5,7 @@
 
 obj-y = aio.o elf_aux.o execvp.o file.o helper.o irq.o main.o mem.o process.o \
 	registers.o sigio.o signal.o start_up.o time.o trap.o tty.o uaccess.o \
-	umid.o tls.o user_syms.o util.o drivers/ sys-$(SUBARCH)/
-
-obj-$(CONFIG_MODE_SKAS) += skas/
-
-obj-$(CONFIG_MODE_TT) += tt.o
-user-objs-$(CONFIG_MODE_TT) += tt.o
+	umid.o tls.o user_syms.o util.o drivers/ sys-$(SUBARCH)/ skas/
 
 obj-$(CONFIG_TTY_LOG) += tty_log.o
 user-objs-$(CONFIG_TTY_LOG) += tty_log.o
arch/um/sys-i386/Makefile +2 -8
Index: linux-2.6.22/arch/um/sys-i386/Makefile
===================================================================
@@ -1,8 +1,6 @@
 obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \
-	ptrace_user.o setjmp.o signal.o sigcontext.o syscalls.o sysrq.o \
-	sys_call_table.o tls.o
-
-obj-$(CONFIG_MODE_SKAS) += stub.o stub_segv.o
+	ptrace_user.o setjmp.o signal.o sigcontext.o stub.o stub_segv.o \
+	syscalls.o sysrq.o sys_call_table.o tls.o
 
 subarch-obj-y = lib/bitops.o lib/semaphore.o lib/string.o
 subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem.o
@@ -13,11 +11,7 @@ USER_OBJS := bugs.o ptrace_user.o sigcon
 USER_OBJS += user-offsets.s
 extra-y += user-offsets.s
 
-extra-$(CONFIG_MODE_TT) += unmap.o
-
 UNPROFILE_OBJS := stub_segv.o
 CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
 
 include arch/um/scripts/Makefile.rules
-
-$(obj)/unmap.%: _c_flags = $(call unprofile,$(CFLAGS))
arch/um/sys-x86_64/Makefile +2 -7
Index: linux-2.6.22/arch/um/sys-x86_64/Makefile
===================================================================
@@ -5,10 +5,9 @@
 #
 
 obj-y = bug.o bugs.o delay.o fault.o ldt.o mem.o ptrace.o ptrace_user.o \
-	setjmp.o sigcontext.o signal.o syscalls.o syscall_table.o sysrq.o \
-	ksyms.o tls.o
+	setjmp.o sigcontext.o signal.o stub.o stub_segv.o syscalls.o \
+	syscall_table.o sysrq.o ksyms.o tls.o
 
-obj-$(CONFIG_MODE_SKAS) += stub.o stub_segv.o
 obj-$(CONFIG_MODULES) += um_module.o
 
 subarch-obj-y = lib/bitops.o lib/csum-partial.o lib/memcpy.o lib/thunk.o
@@ -21,11 +20,7 @@ USER_OBJS := ptrace_user.o sigcontext.o
 USER_OBJS += user-offsets.s
 extra-y += user-offsets.s
 
-extra-$(CONFIG_MODE_TT) += unmap.o
-
 UNPROFILE_OBJS := stub_segv.o
 CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
 
 include arch/um/scripts/Makefile.rules
-
-$(obj)/unmap.%: _c_flags = $(call unprofile,$(CFLAGS))
arch/um/kernel/tt/Makefile deleted +0 -14
Index: linux-2.6.22/arch/um/kernel/tt/Makefile
===================================================================
@@ -1,14 +0,0 @@
-# 
-# Copyright (C) 2002 - 2003 Jeff Dike ([email protected])
-# Licensed under the GPL
-#
-
-obj-y = exec_kern.o exec_user.o gdb.o ksyms.o mem.o mem_user.o process_kern.o \
-	syscall_kern.o syscall_user.o tlb.o tracer.o trap_user.o \
-	uaccess.o uaccess_user.o
-
-obj-$(CONFIG_PT_PROXY) += gdb_kern.o ptproxy/
-
-USER_OBJS := gdb.o tracer.o
-
-include arch/um/scripts/Makefile.rules
arch/um/kernel/tt/exec_user.c deleted +0 -56

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arch/um/kernel/tt/gdb.c deleted +0 -280

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arch/um/kernel/tt/gdb_kern.c deleted +0 -40
Index: linux-2.6.22/arch/um/kernel/tt/gdb_kern.c
===================================================================
@@ -1,40 +0,0 @@
-/* 
- * Copyright (C) 2002 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#include "linux/init.h"
-#include "mconsole_kern.h"
-
-#ifdef CONFIG_MCONSOLE
-
-extern int gdb_config(char *str, char **error_out);
-extern int gdb_remove(int n, char **error_out);
-
-static struct mc_device gdb_mc = {
-	.list		= INIT_LIST_HEAD(gdb_mc.list),
-	.name		= "gdb",
-	.config		= gdb_config,
-	.remove		= gdb_remove,
-};
-
-int gdb_mc_init(void)
-{
-	mconsole_register_dev(&gdb_mc);
-	return(0);
-}
-
-__initcall(gdb_mc_init);
-
-#endif
-
-/*
- * 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:
- */
arch/um/kernel/tt/include/mode-tt.h deleted +0 -34
Index: linux-2.6.22/arch/um/kernel/tt/include/mode-tt.h
===================================================================
@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#ifndef __MODE_TT_H__
-#define __MODE_TT_H__
-
-#include "sysdep/ptrace.h"
-
-enum { OP_NONE, OP_EXEC, OP_FORK, OP_TRACE_ON, OP_REBOOT, OP_HALT, OP_CB };
-
-extern int tracing_pid;
-
-extern int tracer(int (*init_proc)(void *), void *sp);
-extern void sig_handler_common_tt(int sig, void *sc);
-extern void syscall_handler_tt(int sig, union uml_pt_regs *regs);
-extern void reboot_tt(void);
-extern void halt_tt(void);
-extern int is_tracer_winch(int pid, int fd, void *data);
-extern void kill_off_processes_tt(void);
-
-#endif
-
-/*
- * 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:
- */
arch/um/kernel/tt/ksyms.c deleted +0 -29
Index: linux-2.6.22/arch/um/kernel/tt/ksyms.c
===================================================================
@@ -1,29 +0,0 @@
-/* 
- * Copyright (C) 2001, 2002 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#include "linux/module.h"
-#include "asm/uaccess.h"
-#include "mode.h"
-
-EXPORT_SYMBOL(__do_copy_from_user);
-EXPORT_SYMBOL(__do_copy_to_user);
-EXPORT_SYMBOL(__do_strncpy_from_user);
-EXPORT_SYMBOL(__do_strnlen_user); 
-EXPORT_SYMBOL(__do_clear_user);
-EXPORT_SYMBOL(clear_user_tt);
-
-EXPORT_SYMBOL(tracing_pid);
-EXPORT_SYMBOL(honeypot);
-
-/*
- * 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:
- */
arch/um/kernel/tt/mem.c deleted +0 -34
Index: linux-2.6.22/arch/um/kernel/tt/mem.c
===================================================================
@@ -1,34 +0,0 @@
-/* 
- * Copyright (C) 2002 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#include "linux/stddef.h"
-#include "linux/mm.h"
-#include "asm/uaccess.h"
-#include "mem_user.h"
-#include "kern_util.h"
-#include "kern.h"
-#include "tt.h"
-
-void before_mem_tt(unsigned long brk_start)
-{
-	if(debug)
-		remap_data(UML_ROUND_DOWN(&_stext), UML_ROUND_UP(&_etext), 1);
-	remap_data(UML_ROUND_DOWN(&_sdata), UML_ROUND_UP(&_edata), 1);
-	remap_data(UML_ROUND_DOWN(&__bss_start), UML_ROUND_UP(&_end), 1);
-}
-
-#define SIZE ((CONFIG_NEST_LEVEL + CONFIG_KERNEL_HALF_GIGS) * 0x20000000)
-#define START (CONFIG_TOP_ADDR - SIZE)
-
-unsigned long set_task_sizes_tt(unsigned long *task_size_out)
-{
-	unsigned long host_task_size;
-
-	/* Round up to the nearest 4M */
-	host_task_size = ROUND_4M((unsigned long) &host_task_size);
-	*task_size_out = START;
-
-	return host_task_size;
-}
arch/um/kernel/tt/mem_user.c deleted +0 -49

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arch/um/kernel/tt/process_kern.c deleted +0 -461

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arch/um/kernel/tt/ptproxy/Makefile deleted +0 -10
Index: linux-2.6.22/arch/um/kernel/tt/ptproxy/Makefile
===================================================================
@@ -1,10 +0,0 @@
-# 
-# Copyright (C) 2002 Jeff Dike ([email protected])
-# Licensed under the GPL
-#
-
-obj-y = proxy.o ptrace.o sysdep.o wait.o
-
-USER_OBJS := $(obj-y)
-
-include arch/um/scripts/Makefile.rules
arch/um/kernel/tt/ptproxy/ptproxy.h deleted +0 -61

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arch/um/kernel/tt/ptproxy/ptrace.c deleted +0 -237

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arch/um/kernel/tt/ptproxy/sysdep.c deleted +0 -70

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arch/um/kernel/tt/ptproxy/sysdep.h deleted +0 -25
Index: linux-2.6.22/arch/um/kernel/tt/ptproxy/sysdep.h
===================================================================
@@ -1,25 +0,0 @@
-/**********************************************************************
-sysdep.h
-
-Copyright (C) 1999 Lars Brinkhoff.
-Copyright (C) 2001 Jeff Dike ([email protected])
-See the file COPYING for licensing terms and conditions.
-**********************************************************************/
-
-extern int get_syscall(pid_t pid, long *arg1, long *arg2, long *arg3, 
-		       long *arg4, long *arg5);
-extern void syscall_cancel (pid_t pid, long result);
-extern void syscall_set_result (pid_t pid, long result);
-extern void syscall_continue (pid_t pid);
-extern int syscall_pause(pid_t pid);
-
-/*
- * 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:
- */
arch/um/kernel/tt/ptproxy/wait.c deleted +0 -85

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arch/um/kernel/tt/ptproxy/wait.h deleted +0 -15
Index: linux-2.6.22/arch/um/kernel/tt/ptproxy/wait.h
===================================================================
@@ -1,15 +0,0 @@
-/**********************************************************************
-wait.h
-
-Copyright (C) 1999 Lars Brinkhoff.  See the file COPYING for licensing
-terms and conditions.
-**********************************************************************/
-
-#ifndef __PTPROXY_WAIT_H
-#define __PTPROXY_WAIT_H
-
-extern int proxy_wait_return(struct debugger *debugger, pid_t unused);
-extern int real_wait_return(struct debugger *debugger);
-extern int parent_wait_return(struct debugger *debugger, pid_t unused);
-
-#endif
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arch/um/scripts/Makefile.rules +1 -1
Index: linux-2.6.22/arch/um/scripts/Makefile.rules
===================================================================
@@ -21,7 +21,7 @@ $(UNPROFILE_OBJS:.o=.%): \
 $(UNPROFILE_OBJS) : CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ \
 	-Dunix -D__unix__ -D__$(SUBARCH)__ $(CF)
 
-# The stubs and unmap.o can't try to call mcount or update basic block data
+# The stubs can't try to call mcount or update basic block data
 define unprofile
 	$(patsubst -pg,,$(patsubst -fprofile-arcs -ftest-coverage,,$(1)))
 endef
arch/um/sys-i386/unmap.c deleted +0 -25
Index: linux-2.6.22/arch/um/sys-i386/unmap.c
===================================================================
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#include <linux/mman.h>
-#include <asm/unistd.h>
-
-static int errno;
-
-static inline _syscall2(int,munmap,void *,start,size_t,len)
-static inline _syscall6(void *,mmap2,void *,addr,size_t,len,int,prot,int,flags,int,fd,off_t,offset)
-int switcheroo(int fd, int prot, void *from, void *to, int size)
-{
-	if(munmap(to, size) < 0){
-		return(-1);
-	}
-	if(mmap2(to, size, prot, MAP_SHARED | MAP_FIXED, fd, 0) == (void*) -1 ){
-		return(-1);
-	}
-	if(munmap(from, size) < 0){
-		return(-1);
-	}
-	return(0);
-}
arch/um/sys-x86_64/unmap.c deleted +0 -25
Index: linux-2.6.22/arch/um/sys-x86_64/unmap.c
===================================================================
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#include <linux/mman.h>
-#include <asm/unistd.h>
-
-static int errno;
-
-static inline _syscall2(int,munmap,void *,start,size_t,len)
-static inline _syscall6(void *,mmap,void *,addr,size_t,len,int,prot,int,flags,int,fd,off_t,offset)
-int switcheroo(int fd, int prot, void *from, void *to, int size)
-{
-	if(munmap(to, size) < 0){
-		return(-1);
-	}
-	if(mmap(to, size, prot, MAP_SHARED | MAP_FIXED, fd, 0) == (void*) -1){
-		return(-1);
-	}
-	if(munmap(from, size) < 0){
-		return(-1);
-	}
-	return(0);
-}
arch/um/Kconfig.debug +2 -21
Index: linux-2.6.22/arch/um/Kconfig.debug
===================================================================
@@ -2,28 +2,9 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-config CMDLINE_ON_HOST
-	bool "Show command line arguments on the host in TT mode"
-	depends on MODE_TT
-	default !DEBUG_INFO
-	help
-	This controls whether arguments in guest processes should be shown on
-	the host's ps output.
-	Enabling this option hinders debugging on some recent GDB versions
-	(because GDB gets "confused" when we do an execvp()). So probably you
-	should disable it.
-
-config PT_PROXY
-	bool "Enable ptrace proxy"
-	depends on XTERM_CHAN && DEBUG_INFO && MODE_TT
-	help
-	This option enables a debugging interface which allows gdb to debug
-	the kernel without needing to actually attach to kernel threads.
-	If you want to do kernel debugging, say Y here; otherwise say N.
-
 config GPROF
 	bool "Enable gprof support"
-	depends on DEBUG_INFO && MODE_SKAS && !MODE_TT
+	depends on DEBUG_INFO
 	help
         This allows profiling of a User-Mode Linux kernel with the gprof
         utility.
@@ -36,7 +17,7 @@ config GPROF
 
 config GCOV
 	bool "Enable gcov support"
-	depends on DEBUG_INFO && MODE_SKAS
+	depends on DEBUG_INFO
 	help
         This option allows developers to retrieve coverage data from a UML
         session.
arch/um/Makefile-i386 +1 -5
Index: linux-2.6.22/arch/um/Makefile-i386
===================================================================
@@ -2,11 +2,7 @@ core-y += arch/um/sys-i386/ arch/i386/cr
 
 TOP_ADDR := $(CONFIG_TOP_ADDR)
 
-ifeq ($(CONFIG_MODE_SKAS),y)
-  ifneq ($(CONFIG_MODE_TT),y)
-     START := 0x8048000
-  endif
-endif
+START := 0x8048000
 
 LDFLAGS			+= -m elf_i386
 ELF_ARCH		:= $(SUBARCH)
arch/um/defconfig +0 -2
Index: linux-2.6.22/arch/um/defconfig
===================================================================
@@ -12,9 +12,7 @@ CONFIG_IRQ_RELEASE_METHOD=y
 #
 # UML-specific options
 #
-# CONFIG_MODE_TT is not set
 # CONFIG_STATIC_LINK is not set
-CONFIG_MODE_SKAS=y
 
 #
 # Host processor type and features
arch/um/include/choose-mode.h +0 -18
Index: linux-2.6.22/arch/um/include/choose-mode.h
===================================================================
@@ -8,26 +8,8 @@
 
 #include "uml-config.h"
 
-#if defined(UML_CONFIG_MODE_TT) && defined(UML_CONFIG_MODE_SKAS)
-#define CHOOSE_MODE(tt, skas) (mode_tt ? (tt) : (skas))
-
-extern int mode_tt;
-static inline void *__choose_mode(void *tt, void *skas) {
-	return mode_tt ? tt : skas;
-}
-
-#define __CHOOSE_MODE(tt, skas) (*( (typeof(tt) *) __choose_mode(&(tt), &(skas))))
-
-#elif defined(UML_CONFIG_MODE_SKAS)
 #define CHOOSE_MODE(tt, skas) (skas)
 
-#elif defined(UML_CONFIG_MODE_TT)
-#define CHOOSE_MODE(tt, skas) (tt)
-
-#else
-#error CONFIG_MODE_SKAS and CONFIG_MODE_TT are both disabled
-#endif
-
 #define CHOOSE_MODE_PROC(tt, skas, args...) \
 	CHOOSE_MODE(tt(args), skas(args))
 
arch/um/include/irq_user.h +0 -4
Index: linux-2.6.22/arch/um/include/irq_user.h
===================================================================
@@ -30,8 +30,4 @@ extern void deactivate_fd(int fd, int ir
 extern int deactivate_all_fds(void);
 extern int activate_ipi(int fd, int pid);
 
-#ifdef CONFIG_MODE_TT
-extern void forward_interrupts(int pid);
-#endif
-
 #endif
arch/um/include/mode.h +0 -19
Index: linux-2.6.22/arch/um/include/mode.h
===================================================================
@@ -6,25 +6,6 @@
 #ifndef __MODE_H__
 #define __MODE_H__
 
-#include "uml-config.h"
-
-#ifdef UML_CONFIG_MODE_TT
-#include "mode-tt.h"
-#endif
-
-#ifdef UML_CONFIG_MODE_SKAS
 #include "mode-skas.h"
-#endif
 
 #endif
-
-/*
- * 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:
- */
arch/um/include/mode_kern.h +0 -6
Index: linux-2.6.22/arch/um/include/mode_kern.h
===================================================================
@@ -6,12 +6,6 @@
 #ifndef __MODE_KERN_H__
 #define __MODE_KERN_H__
 
-#ifdef CONFIG_MODE_TT
-#include "mode_kern_tt.h"
-#endif
-
-#ifdef CONFIG_MODE_SKAS
 #include "mode_kern_skas.h"
-#endif
 
 #endif
arch/um/include/sysdep-i386/ptrace.h +0 -23
Index: linux-2.6.22/arch/um/include/sysdep-i386/ptrace.h
===================================================================
@@ -14,12 +14,7 @@
 #define MAX_REG_NR (UM_FRAME_SIZE / sizeof(unsigned long))
 #define MAX_REG_OFFSET (UM_FRAME_SIZE)
 
-#ifdef UML_CONFIG_PT_PROXY
-extern void update_debugregs(int seq);
-#else
 static inline void update_debugregs(int seq) {}
-#endif
-
 
 /* syscall emulation path in ptrace */
 
@@ -31,12 +26,6 @@ void set_using_sysemu(int value);
 int get_using_sysemu(void);
 extern int sysemu_supported;
 
-#ifdef UML_CONFIG_MODE_TT
-#include "sysdep/sc.h"
-#endif
-
-#ifdef UML_CONFIG_MODE_SKAS
-
 #include "skas_ptregs.h"
 
 #define REGS_IP(r) ((r)[HOST_IP])
@@ -60,20 +49,11 @@ extern int sysemu_supported;
 
 #define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))
 
-#endif
 #ifndef PTRACE_SYSEMU_SINGLESTEP
 #define PTRACE_SYSEMU_SINGLESTEP 32
 #endif
 
 union uml_pt_regs {
-#ifdef UML_CONFIG_MODE_TT
-	struct tt_regs {
-		long syscall;
-		void *sc;
-                struct faultinfo faultinfo;
-	} tt;
-#endif
-#ifdef UML_CONFIG_MODE_SKAS
 	struct skas_regs {
 		unsigned long regs[MAX_REG_NR];
 		unsigned long fp[HOST_FP_SIZE];
@@ -82,13 +62,10 @@ union uml_pt_regs {
 		long syscall;
 		int is_user;
 	} skas;
-#endif
 };
 
 #define EMPTY_UML_PT_REGS { }
 
-extern int mode_tt;
-
 #define UPT_SC(r) ((r)->tt.sc)
 #define UPT_IP(r) \
 	__CHOOSE_MODE(SC_IP(UPT_SC(r)), REGS_IP((r)->skas.regs))
arch/um/include/sysdep-i386/thread.h +0 -3
Index: linux-2.6.22/arch/um/include/sysdep-i386/thread.h
===================================================================
@@ -4,8 +4,5 @@
 #include <kern_constants.h>
 
 #define TASK_DEBUGREGS(task) ((unsigned long *) &(((char *) (task))[HOST_TASK_DEBUGREGS]))
-#ifdef UML_CONFIG_MODE_TT
-#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[HOST_TASK_EXTERN_PID]))
-#endif
 
 #endif
arch/um/include/sysdep-x86_64/ptrace.h +1 -20
Index: linux-2.6.22/arch/um/include/sysdep-x86_64/ptrace.h
===================================================================
@@ -1,5 +1,6 @@
 /*
  * Copyright 2003 PathScale, Inc.
+ * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  *
  * Licensed under the GPL
  */
@@ -14,11 +15,6 @@
 #define MAX_REG_OFFSET (UM_FRAME_SIZE)
 #define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))
 
-#ifdef UML_CONFIG_MODE_TT
-#include "sysdep/sc.h"
-#endif
-
-#ifdef UML_CONFIG_MODE_SKAS
 #include "skas_ptregs.h"
 
 #define REGS_IP(r) ((r)[HOST_IP])
@@ -88,21 +84,10 @@
 
 #define REGS_ERR(r) ((r)->fault_type)
 
-#endif
-
 #include "choose-mode.h"
 
 /* XXX */
 union uml_pt_regs {
-#ifdef UML_CONFIG_MODE_TT
-	struct tt_regs {
-		long syscall;
-		unsigned long orig_rax;
-		void *sc;
-                struct faultinfo faultinfo;
-	} tt;
-#endif
-#ifdef UML_CONFIG_MODE_SKAS
 	struct skas_regs {
 		unsigned long regs[MAX_REG_NR];
 		unsigned long fp[HOST_FP_SIZE];
@@ -110,14 +95,10 @@ union uml_pt_regs {
 		long syscall;
 		int is_user;
 	} skas;
-#endif
 };
 
 #define EMPTY_UML_PT_REGS { }
 
-/* XXX */
-extern int mode_tt;
-
 #define UPT_RBX(r) __CHOOSE_MODE(SC_RBX(UPT_SC(r)), REGS_RBX((r)->skas.regs))
 #define UPT_RCX(r) __CHOOSE_MODE(SC_RCX(UPT_SC(r)), REGS_RCX((r)->skas.regs))
 #define UPT_RDX(r) __CHOOSE_MODE(SC_RDX(UPT_SC(r)), REGS_RDX((r)->skas.regs))
arch/um/include/sysdep-x86_64/thread.h +0 -4
Index: linux-2.6.22/arch/um/include/sysdep-x86_64/thread.h
===================================================================
@@ -3,8 +3,4 @@
 
 #include <kern_constants.h>
 
-#ifdef UML_CONFIG_MODE_TT
-#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[HOST_TASK_EXTERN_PID]))
-#endif
-
 #endif
arch/um/include/tt/debug.h deleted +0 -18
Index: linux-2.6.22/arch/um/include/tt/debug.h
===================================================================
@@ -1,18 +0,0 @@
-/*
- * Copyright (C) 2000, 2001, 2002  Jeff Dike ([email protected]) and
- * Lars Brinkhoff.
- * Licensed under the GPL
- */
-
-#ifndef __UML_TT_DEBUG_H
-#define __UML_TT_DEBUG_H
-
-extern int debugger_proxy(int status, pid_t pid);
-extern void child_proxy(pid_t pid, int status);
-extern void init_proxy (pid_t pid, int waiting, int status);
-extern int start_debugger(char *prog, int startup, int stop, int *debugger_fd);
-extern void fake_child_exit(void);
-extern int gdb_config(char *str);
-extern int gdb_remove(int unused);
-
-#endif
arch/um/include/tt/mmu-tt.h deleted +0 -12
Index: linux-2.6.22/arch/um/include/tt/mmu-tt.h
===================================================================
@@ -1,12 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#ifndef __TT_MMU_H
-#define __TT_MMU_H
-
-struct mmu_context_tt {
-};
-
-#endif
arch/um/include/tt/mode-tt.h deleted +0 -23
Index: linux-2.6.22/arch/um/include/tt/mode-tt.h
===================================================================
@@ -1,23 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#ifndef __MODE_TT_H__
-#define __MODE_TT_H__
-
-#include "sysdep/ptrace.h"
-
-enum { OP_NONE, OP_EXEC, OP_FORK, OP_TRACE_ON, OP_REBOOT, OP_HALT, OP_CB };
-
-extern int tracing_pid;
-
-extern int tracer(int (*init_proc)(void *), void *sp);
-extern void sig_handler_common_tt(int sig, void *sc);
-extern void syscall_handler_tt(int sig, union uml_pt_regs *regs);
-extern void reboot_tt(void);
-extern void halt_tt(void);
-extern int is_tracer_winch(int pid, int fd, void *data);
-extern void kill_off_processes_tt(void);
-
-#endif
arch/um/include/tt/mode_kern_tt.h deleted +0 -40
Index: linux-2.6.22/arch/um/include/tt/mode_kern_tt.h
===================================================================
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#ifndef __TT_MODE_KERN_H__
-#define __TT_MODE_KERN_H__
-
-#include "linux/sched.h"
-#include "asm/page.h"
-#include "asm/ptrace.h"
-#include "asm/uaccess.h"
-
-extern void switch_to_tt(void *prev, void *next);
-extern void flush_thread_tt(void);
-extern void start_thread_tt(struct pt_regs *regs, unsigned long eip,
-			   unsigned long esp);
-extern int copy_thread_tt(int nr, unsigned long clone_flags, unsigned long sp,
-			  unsigned long stack_top, struct task_struct *p,
-			  struct pt_regs *regs);
-extern void release_thread_tt(struct task_struct *task);
-extern void initial_thread_cb_tt(void (*proc)(void *), void *arg);
-extern void init_idle_tt(void);
-extern void flush_tlb_kernel_range_tt(unsigned long start, unsigned long end);
-extern void flush_tlb_kernel_vm_tt(void);
-extern void __flush_tlb_one_tt(unsigned long addr);
-extern void flush_tlb_range_tt(struct vm_area_struct *vma,
-			       unsigned long start, unsigned long end);
-extern void flush_tlb_mm_tt(struct mm_struct *mm);
-extern void force_flush_all_tt(void);
-extern long execute_syscall_tt(void *r);
-extern void before_mem_tt(unsigned long brk_start);
-extern unsigned long set_task_sizes_tt(unsigned long *task_size_out);
-extern int start_uml_tt(void);
-extern int external_pid_tt(struct task_struct *task);
-extern int thread_pid_tt(struct task_struct *task);
-
-#define kmem_end_tt (host_task_size - ABOVE_KMEM)
-
-#endif
arch/um/include/tt/tt.h deleted +0 -37
Index: linux-2.6.22/arch/um/include/tt/tt.h
===================================================================
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike ([email protected])
- * Licensed under the GPL
- */
-
-#ifndef __TT_H__
-#define __TT_H__
-
-#include "sysdep/ptrace.h"
-
-extern int gdb_pid;
-extern int debug;
-extern int debug_stop;
-extern int debug_trace;
-
-extern int honeypot;
-
-extern int fork_tramp(void *sig_stack);
-extern int do_proc_op(void *t, int proc_id);
-extern int tracer(int (*init_proc)(void *), void *sp);
-extern void attach_process(int pid);
-extern void tracer_panic(char *format, ...)
-	__attribute__ ((format (printf, 1, 2)));
-extern void set_init_pid(int pid);
-extern int set_user_mode(void *task);
-extern void set_tracing(void *t, int tracing);
-extern int is_tracing(void *task);
-extern void syscall_handler(int sig, union uml_pt_regs *regs);
-extern void exit_kernel(int pid, void *task);
-extern void do_syscall(void *task, int pid, int local_using_sysemu);
-extern void do_sigtrap(void *task);
-extern int is_valid_pid(int pid);
-extern void remap_data(void *segment_start, void *segment_end, int w);
-extern long execute_syscall_tt(void *r);
-
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arch/um/kernel/process.c +0 -7
Index: linux-2.6.22/arch/um/kernel/process.c
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include/asm-um/processor-generic.h +0 -14
Index: linux-2.6.22/include/asm-um/processor-generic.h
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arch/um/include/kern_util.h +0 -6
Index: linux-2.6.22/arch/um/include/kern_util.h
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arch/um/os-Linux/start_up.c +0 -10
Index: linux-2.6.22/arch/um/os-Linux/start_up.c
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arch/um/include/os.h +0 -26
Index: linux-2.6.22/arch/um/include/os.h
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arch/um/kernel/init_task.c +0 -7
Index: linux-2.6.22/arch/um/kernel/init_task.c
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arch/um/kernel/trap.c +0 -2
Index: linux-2.6.22/arch/um/kernel/trap.c
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arch/um/os-Linux/process.c +0 -31
Index: linux-2.6.22/arch/um/os-Linux/process.c
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arch/um/include/sysdep-i386/sigcontext.h +0 -4
Index: linux-2.6.22/arch/um/include/sysdep-i386/sigcontext.h
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include/asm-um/mmu_context.h +0 -6
Index: linux-2.6.22/include/asm-um/mmu_context.h
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arch/um/os-Linux/sys-i386/Makefile +1 -1
Index: linux-2.6.22/arch/um/os-Linux/sys-i386/Makefile
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arch/um/os-Linux/sys-x86_64/Makefile +1 -1
Index: linux-2.6.22/arch/um/os-Linux/sys-x86_64/Makefile
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