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-rw-r--r--arch/um/include/asm/a.out-core.h27
-rw-r--r--arch/um/include/asm/apic.h4
-rw-r--r--arch/um/include/asm/auxvec.h4
-rw-r--r--arch/um/include/asm/bugs.h6
-rw-r--r--arch/um/include/asm/cache.h17
-rw-r--r--arch/um/include/asm/checksum.h6
-rw-r--r--arch/um/include/asm/common.lds.S130
-rw-r--r--arch/um/include/asm/cputime.h6
-rw-r--r--arch/um/include/asm/current.h13
-rw-r--r--arch/um/include/asm/delay.h20
-rw-r--r--arch/um/include/asm/desc.h16
-rw-r--r--arch/um/include/asm/device.h7
-rw-r--r--arch/um/include/asm/dma-mapping.h128
-rw-r--r--arch/um/include/asm/dma.h10
-rw-r--r--arch/um/include/asm/emergency-restart.h6
-rw-r--r--arch/um/include/asm/fixmap.h99
-rw-r--r--arch/um/include/asm/futex.h6
-rw-r--r--arch/um/include/asm/hardirq.h25
-rw-r--r--arch/um/include/asm/hw_irq.h7
-rw-r--r--arch/um/include/asm/io.h57
-rw-r--r--arch/um/include/asm/irq.h23
-rw-r--r--arch/um/include/asm/irq_regs.h1
-rw-r--r--arch/um/include/asm/irq_vectors.h20
-rw-r--r--arch/um/include/asm/irqflags.h6
-rw-r--r--arch/um/include/asm/kdebug.h1
-rw-r--r--arch/um/include/asm/kmap_types.h29
-rw-r--r--arch/um/include/asm/mmu.h22
-rw-r--r--arch/um/include/asm/mmu_context.h54
-rw-r--r--arch/um/include/asm/mutex.h9
-rw-r--r--arch/um/include/asm/page.h122
-rw-r--r--arch/um/include/asm/page_offset.h1
-rw-r--r--arch/um/include/asm/param.h20
-rw-r--r--arch/um/include/asm/pci.h7
-rw-r--r--arch/um/include/asm/pda.h31
-rw-r--r--arch/um/include/asm/pgalloc.h72
-rw-r--r--arch/um/include/asm/pgtable-2level.h53
-rw-r--r--arch/um/include/asm/pgtable-3level.h146
-rw-r--r--arch/um/include/asm/pgtable.h366
-rw-r--r--arch/um/include/asm/processor-generic.h136
-rw-r--r--arch/um/include/asm/ptrace-generic.h55
-rw-r--r--arch/um/include/asm/required-features.h9
-rw-r--r--arch/um/include/asm/sections.h7
-rw-r--r--arch/um/include/asm/segment.h10
-rw-r--r--arch/um/include/asm/setup.h10
-rw-r--r--arch/um/include/asm/smp.h33
-rw-r--r--arch/um/include/asm/suspend.h4
-rw-r--r--arch/um/include/asm/system.h35
-rw-r--r--arch/um/include/asm/thread_info.h83
-rw-r--r--arch/um/include/asm/timex.h13
-rw-r--r--arch/um/include/asm/tlb.h127
-rw-r--r--arch/um/include/asm/tlbflush.h31
-rw-r--r--arch/um/include/asm/topology.h6
-rw-r--r--arch/um/include/asm/uaccess.h99
-rw-r--r--arch/um/include/asm/xor.h6
54 files changed, 2241 insertions, 0 deletions
diff --git a/arch/um/include/asm/a.out-core.h b/arch/um/include/asm/a.out-core.h
new file mode 100644
index 00000000000..995643b1830
--- /dev/null
+++ b/arch/um/include/asm/a.out-core.h
@@ -0,0 +1,27 @@
+/* a.out coredump register dumper
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef __UM_A_OUT_CORE_H
+#define __UM_A_OUT_CORE_H
+
+#ifdef __KERNEL__
+
+#include <linux/user.h>
+
+/*
+ * fill in the user structure for an a.out core dump
+ */
+static inline void aout_dump_thread(struct pt_regs *regs, struct user *u)
+{
+}
+
+#endif /* __KERNEL__ */
+#endif /* __UM_A_OUT_CORE_H */
diff --git a/arch/um/include/asm/apic.h b/arch/um/include/asm/apic.h
new file mode 100644
index 00000000000..876dee84ab1
--- /dev/null
+++ b/arch/um/include/asm/apic.h
@@ -0,0 +1,4 @@
+#ifndef __UM_APIC_H
+#define __UM_APIC_H
+
+#endif
diff --git a/arch/um/include/asm/auxvec.h b/arch/um/include/asm/auxvec.h
new file mode 100644
index 00000000000..1e5e1c2fc9b
--- /dev/null
+++ b/arch/um/include/asm/auxvec.h
@@ -0,0 +1,4 @@
+#ifndef __UM_AUXVEC_H
+#define __UM_AUXVEC_H
+
+#endif
diff --git a/arch/um/include/asm/bugs.h b/arch/um/include/asm/bugs.h
new file mode 100644
index 00000000000..6a72e240d5f
--- /dev/null
+++ b/arch/um/include/asm/bugs.h
@@ -0,0 +1,6 @@
+#ifndef __UM_BUGS_H
+#define __UM_BUGS_H
+
+void check_bugs(void);
+
+#endif
diff --git a/arch/um/include/asm/cache.h b/arch/um/include/asm/cache.h
new file mode 100644
index 00000000000..19e1bdd6741
--- /dev/null
+++ b/arch/um/include/asm/cache.h
@@ -0,0 +1,17 @@
+#ifndef __UM_CACHE_H
+#define __UM_CACHE_H
+
+
+#if defined(CONFIG_UML_X86) && !defined(CONFIG_64BIT)
+# define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT)
+#elif defined(CONFIG_UML_X86) /* 64-bit */
+# define L1_CACHE_SHIFT 6 /* Should be 7 on Intel */
+#else
+/* XXX: this was taken from x86, now it's completely random. Luckily only
+ * affects SMP padding. */
+# define L1_CACHE_SHIFT 5
+#endif
+
+#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+
+#endif
diff --git a/arch/um/include/asm/checksum.h b/arch/um/include/asm/checksum.h
new file mode 100644
index 00000000000..5b501361e36
--- /dev/null
+++ b/arch/um/include/asm/checksum.h
@@ -0,0 +1,6 @@
+#ifndef __UM_CHECKSUM_H
+#define __UM_CHECKSUM_H
+
+#include "sysdep/checksum.h"
+
+#endif
diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S
new file mode 100644
index 00000000000..cb0248616d4
--- /dev/null
+++ b/arch/um/include/asm/common.lds.S
@@ -0,0 +1,130 @@
+#include <asm-generic/vmlinux.lds.h>
+
+ .fini : { *(.fini) } =0x9090
+ _etext = .;
+ PROVIDE (etext = .);
+
+ . = ALIGN(4096);
+ _sdata = .;
+ PROVIDE (sdata = .);
+
+ RODATA
+
+ .unprotected : { *(.unprotected) }
+ . = ALIGN(4096);
+ PROVIDE (_unprotected_end = .);
+
+ . = ALIGN(4096);
+ .note : { *(.note.*) }
+ __ex_table : {
+ __start___ex_table = .;
+ *(__ex_table)
+ __stop___ex_table = .;
+ }
+
+ BUG_TABLE
+
+ .uml.setup.init : {
+ __uml_setup_start = .;
+ *(.uml.setup.init)
+ __uml_setup_end = .;
+ }
+
+ .uml.help.init : {
+ __uml_help_start = .;
+ *(.uml.help.init)
+ __uml_help_end = .;
+ }
+
+ .uml.postsetup.init : {
+ __uml_postsetup_start = .;
+ *(.uml.postsetup.init)
+ __uml_postsetup_end = .;
+ }
+
+ .init.setup : {
+ __setup_start = .;
+ *(.init.setup)
+ __setup_end = .;
+ }
+
+ . = ALIGN(32);
+ .data.percpu : {
+ __per_cpu_start = . ;
+ *(.data.percpu)
+ __per_cpu_end = . ;
+ }
+
+ .initcall.init : {
+ __initcall_start = .;
+ INITCALLS
+ __initcall_end = .;
+ }
+
+ .con_initcall.init : {
+ __con_initcall_start = .;
+ *(.con_initcall.init)
+ __con_initcall_end = .;
+ }
+
+ .uml.initcall.init : {
+ __uml_initcall_start = .;
+ *(.uml.initcall.init)
+ __uml_initcall_end = .;
+ }
+ __init_end = .;
+
+ SECURITY_INIT
+
+ .exitcall : {
+ __exitcall_begin = .;
+ *(.exitcall.exit)
+ __exitcall_end = .;
+ }
+
+ .uml.exitcall : {
+ __uml_exitcall_begin = .;
+ *(.uml.exitcall.exit)
+ __uml_exitcall_end = .;
+ }
+
+ . = ALIGN(4);
+ .altinstructions : {
+ __alt_instructions = .;
+ *(.altinstructions)
+ __alt_instructions_end = .;
+ }
+ .altinstr_replacement : { *(.altinstr_replacement) }
+ /* .exit.text is discard at runtime, not link time, to deal with references
+ from .altinstructions and .eh_frame */
+ .exit.text : { *(.exit.text) }
+ .exit.data : { *(.exit.data) }
+
+ .preinit_array : {
+ __preinit_array_start = .;
+ *(.preinit_array)
+ __preinit_array_end = .;
+ }
+ .init_array : {
+ __init_array_start = .;
+ *(.init_array)
+ __init_array_end = .;
+ }
+ .fini_array : {
+ __fini_array_start = .;
+ *(.fini_array)
+ __fini_array_end = .;
+ }
+
+ . = ALIGN(4096);
+ .init.ramfs : {
+ __initramfs_start = .;
+ *(.init.ramfs)
+ __initramfs_end = .;
+ }
+
+ /* Sections to be discarded */
+ /DISCARD/ : {
+ *(.exitcall.exit)
+ }
+
diff --git a/arch/um/include/asm/cputime.h b/arch/um/include/asm/cputime.h
new file mode 100644
index 00000000000..c84acbadfa2
--- /dev/null
+++ b/arch/um/include/asm/cputime.h
@@ -0,0 +1,6 @@
+#ifndef __UM_CPUTIME_H
+#define __UM_CPUTIME_H
+
+#include <asm-generic/cputime.h>
+
+#endif /* __UM_CPUTIME_H */
diff --git a/arch/um/include/asm/current.h b/arch/um/include/asm/current.h
new file mode 100644
index 00000000000..c2191d9aa03
--- /dev/null
+++ b/arch/um/include/asm/current.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_CURRENT_H
+#define __UM_CURRENT_H
+
+#include "linux/thread_info.h"
+
+#define current (current_thread_info()->task)
+
+#endif
diff --git a/arch/um/include/asm/delay.h b/arch/um/include/asm/delay.h
new file mode 100644
index 00000000000..c71e32b6741
--- /dev/null
+++ b/arch/um/include/asm/delay.h
@@ -0,0 +1,20 @@
+#ifndef __UM_DELAY_H
+#define __UM_DELAY_H
+
+#define MILLION 1000000
+
+/* Undefined on purpose */
+extern void __bad_udelay(void);
+
+extern void __udelay(unsigned long usecs);
+extern void __delay(unsigned long loops);
+
+#define udelay(n) ((__builtin_constant_p(n) && (n) > 20000) ? \
+ __bad_udelay() : __udelay(n))
+
+/* It appears that ndelay is not used at all for UML, and has never been
+ * implemented. */
+extern void __unimplemented_ndelay(void);
+#define ndelay(n) __unimplemented_ndelay()
+
+#endif
diff --git a/arch/um/include/asm/desc.h b/arch/um/include/asm/desc.h
new file mode 100644
index 00000000000..4ec34a51b62
--- /dev/null
+++ b/arch/um/include/asm/desc.h
@@ -0,0 +1,16 @@
+#ifndef __UM_DESC_H
+#define __UM_DESC_H
+
+/* Taken from asm-i386/desc.h, it's the only thing we need. The rest wouldn't
+ * compile, and has never been used. */
+#define LDT_empty(info) (\
+ (info)->base_addr == 0 && \
+ (info)->limit == 0 && \
+ (info)->contents == 0 && \
+ (info)->read_exec_only == 1 && \
+ (info)->seg_32bit == 0 && \
+ (info)->limit_in_pages == 0 && \
+ (info)->seg_not_present == 1 && \
+ (info)->useable == 0 )
+
+#endif
diff --git a/arch/um/include/asm/device.h b/arch/um/include/asm/device.h
new file mode 100644
index 00000000000..d8f9872b0e2
--- /dev/null
+++ b/arch/um/include/asm/device.h
@@ -0,0 +1,7 @@
+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+
diff --git a/arch/um/include/asm/dma-mapping.h b/arch/um/include/asm/dma-mapping.h
new file mode 100644
index 00000000000..90fc708b320
--- /dev/null
+++ b/arch/um/include/asm/dma-mapping.h
@@ -0,0 +1,128 @@
+#ifndef _ASM_DMA_MAPPING_H
+#define _ASM_DMA_MAPPING_H
+
+#include <asm/scatterlist.h>
+
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+ BUG();
+ return(0);
+}
+
+static inline int
+dma_set_mask(struct device *dev, u64 dma_mask)
+{
+ BUG();
+ return(0);
+}
+
+static inline void *
+dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
+ gfp_t flag)
+{
+ BUG();
+ return((void *) 0);
+}
+
+static inline void
+dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
+ dma_addr_t dma_handle)
+{
+ BUG();
+}
+
+static inline dma_addr_t
+dma_map_single(struct device *dev, void *cpu_addr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return(0);
+}
+
+static inline void
+dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline dma_addr_t
+dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return(0);
+}
+
+static inline void
+dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline int
+dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return(0);
+}
+
+static inline void
+dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_single(struct device *dev, dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_sg(struct device *dev, struct scatterlist *sg, int nelems,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+#define dma_is_consistent(d, h) (1)
+
+static inline int
+dma_get_cache_alignment(void)
+{
+ BUG();
+ return(0);
+}
+
+static inline void
+dma_sync_single_range(struct device *dev, dma_addr_t dma_handle,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline int
+dma_mapping_error(struct device *dev, dma_addr_t dma_handle)
+{
+ BUG();
+ return 0;
+}
+
+#endif
diff --git a/arch/um/include/asm/dma.h b/arch/um/include/asm/dma.h
new file mode 100644
index 00000000000..9f6139a8a52
--- /dev/null
+++ b/arch/um/include/asm/dma.h
@@ -0,0 +1,10 @@
+#ifndef __UM_DMA_H
+#define __UM_DMA_H
+
+#include "asm/io.h"
+
+extern unsigned long uml_physmem;
+
+#define MAX_DMA_ADDRESS (uml_physmem)
+
+#endif
diff --git a/arch/um/include/asm/emergency-restart.h b/arch/um/include/asm/emergency-restart.h
new file mode 100644
index 00000000000..108d8c48e42
--- /dev/null
+++ b/arch/um/include/asm/emergency-restart.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_EMERGENCY_RESTART_H
+#define _ASM_EMERGENCY_RESTART_H
+
+#include <asm-generic/emergency-restart.h>
+
+#endif /* _ASM_EMERGENCY_RESTART_H */
diff --git a/arch/um/include/asm/fixmap.h b/arch/um/include/asm/fixmap.h
new file mode 100644
index 00000000000..69c0252345f
--- /dev/null
+++ b/arch/um/include/asm/fixmap.h
@@ -0,0 +1,99 @@
+#ifndef __UM_FIXMAP_H
+#define __UM_FIXMAP_H
+
+#include <asm/processor.h>
+#include <asm/system.h>
+#include <asm/kmap_types.h>
+#include <asm/archparam.h>
+#include <asm/page.h>
+#include <linux/threads.h>
+
+/*
+ * Here we define all the compile-time 'special' virtual
+ * addresses. The point is to have a constant address at
+ * compile time, but to set the physical address only
+ * in the boot process. We allocate these special addresses
+ * from the end of virtual memory (0xfffff000) backwards.
+ * Also this lets us do fail-safe vmalloc(), we
+ * can guarantee that these special addresses and
+ * vmalloc()-ed addresses never overlap.
+ *
+ * these 'compile-time allocated' memory buffers are
+ * fixed-size 4k pages. (or larger if used with an increment
+ * highger than 1) use fixmap_set(idx,phys) to associate
+ * physical memory with fixmap indices.
+ *
+ * TLB entries of such buffers will not be flushed across
+ * task switches.
+ */
+
+/*
+ * on UP currently we will have no trace of the fixmap mechanizm,
+ * no page table allocations, etc. This might change in the
+ * future, say framebuffers for the console driver(s) could be
+ * fix-mapped?
+ */
+enum fixed_addresses {
+#ifdef CONFIG_HIGHMEM
+ FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
+ FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
+#endif
+ __end_of_fixed_addresses
+};
+
+extern void __set_fixmap (enum fixed_addresses idx,
+ unsigned long phys, pgprot_t flags);
+
+#define set_fixmap(idx, phys) \
+ __set_fixmap(idx, phys, PAGE_KERNEL)
+/*
+ * Some hardware wants to get fixmapped without caching.
+ */
+#define set_fixmap_nocache(idx, phys) \
+ __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
+/*
+ * used by vmalloc.c.
+ *
+ * Leave one empty page between vmalloc'ed areas and
+ * the start of the fixmap, and leave one page empty
+ * at the top of mem..
+ */
+
+#define FIXADDR_TOP (TASK_SIZE - 2 * PAGE_SIZE)
+#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
+
+#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
+#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
+
+extern void __this_fixmap_does_not_exist(void);
+
+/*
+ * 'index to address' translation. If anyone tries to use the idx
+ * directly without tranlation, we catch the bug with a NULL-deference
+ * kernel oops. Illegal ranges of incoming indices are caught too.
+ */
+static inline unsigned long fix_to_virt(const unsigned int idx)
+{
+ /*
+ * this branch gets completely eliminated after inlining,
+ * except when someone tries to use fixaddr indices in an
+ * illegal way. (such as mixing up address types or using
+ * out-of-range indices).
+ *
+ * If it doesn't get removed, the linker will complain
+ * loudly with a reasonably clear error message..
+ */
+ if (idx >= __end_of_fixed_addresses)
+ __this_fixmap_does_not_exist();
+
+ return __fix_to_virt(idx);
+}
+
+static inline unsigned long virt_to_fix(const unsigned long vaddr)
+{
+ BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
+ return __virt_to_fix(vaddr);
+}
+
+#endif
diff --git a/arch/um/include/asm/futex.h b/arch/um/include/asm/futex.h
new file mode 100644
index 00000000000..6a332a9f099
--- /dev/null
+++ b/arch/um/include/asm/futex.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_FUTEX_H
+#define _ASM_FUTEX_H
+
+#include <asm-generic/futex.h>
+
+#endif
diff --git a/arch/um/include/asm/hardirq.h b/arch/um/include/asm/hardirq.h
new file mode 100644
index 00000000000..313ebb8a256
--- /dev/null
+++ b/arch/um/include/asm/hardirq.h
@@ -0,0 +1,25 @@
+/* (c) 2004 cw@f00f.org, GPLv2 blah blah */
+
+#ifndef __ASM_UM_HARDIRQ_H
+#define __ASM_UM_HARDIRQ_H
+
+#include <linux/threads.h>
+#include <linux/irq.h>
+
+/* NOTE: When SMP works again we might want to make this
+ * ____cacheline_aligned or maybe use per_cpu state? --cw */
+typedef struct {
+ unsigned int __softirq_pending;
+} irq_cpustat_t;
+
+#include <linux/irq_cpustat.h>
+
+/* As this would be very strange for UML to get we BUG() after the
+ * printk. */
+static inline void ack_bad_irq(unsigned int irq)
+{
+ printk(KERN_ERR "unexpected IRQ %02x\n", irq);
+ BUG();
+}
+
+#endif /* __ASM_UM_HARDIRQ_H */
diff --git a/arch/um/include/asm/hw_irq.h b/arch/um/include/asm/hw_irq.h
new file mode 100644
index 00000000000..1cf84cf5f21
--- /dev/null
+++ b/arch/um/include/asm/hw_irq.h
@@ -0,0 +1,7 @@
+#ifndef _ASM_UM_HW_IRQ_H
+#define _ASM_UM_HW_IRQ_H
+
+#include "asm/irq.h"
+#include "asm/archparam.h"
+
+#endif
diff --git a/arch/um/include/asm/io.h b/arch/um/include/asm/io.h
new file mode 100644
index 00000000000..44e8b8c772a
--- /dev/null
+++ b/arch/um/include/asm/io.h
@@ -0,0 +1,57 @@
+#ifndef __UM_IO_H
+#define __UM_IO_H
+
+#include "asm/page.h"
+
+#define IO_SPACE_LIMIT 0xdeadbeef /* Sure hope nothing uses this */
+
+static inline int inb(unsigned long i) { return(0); }
+static inline void outb(char c, unsigned long i) { }
+
+/*
+ * Change virtual addresses to physical addresses and vv.
+ * These are pretty trivial
+ */
+static inline unsigned long virt_to_phys(volatile void * address)
+{
+ return __pa((void *) address);
+}
+
+static inline void * phys_to_virt(unsigned long address)
+{
+ return __va(address);
+}
+
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem
+ * access
+ */
+#define xlate_dev_mem_ptr(p) __va(p)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p) p
+
+static inline void writeb(unsigned char b, volatile void __iomem *addr)
+{
+ *(volatile unsigned char __force *) addr = b;
+}
+static inline void writew(unsigned short b, volatile void __iomem *addr)
+{
+ *(volatile unsigned short __force *) addr = b;
+}
+static inline void writel(unsigned int b, volatile void __iomem *addr)
+{
+ *(volatile unsigned int __force *) addr = b;
+}
+static inline void writeq(unsigned int b, volatile void __iomem *addr)
+{
+ *(volatile unsigned long long __force *) addr = b;
+}
+#define __raw_writeb writeb
+#define __raw_writew writew
+#define __raw_writel writel
+#define __raw_writeq writeq
+
+#endif
diff --git a/arch/um/include/asm/irq.h b/arch/um/include/asm/irq.h
new file mode 100644
index 00000000000..4a2037f8204
--- /dev/null
+++ b/arch/um/include/asm/irq.h
@@ -0,0 +1,23 @@
+#ifndef __UM_IRQ_H
+#define __UM_IRQ_H
+
+#define TIMER_IRQ 0
+#define UMN_IRQ 1
+#define CONSOLE_IRQ 2
+#define CONSOLE_WRITE_IRQ 3
+#define UBD_IRQ 4
+#define UM_ETH_IRQ 5
+#define SSL_IRQ 6
+#define SSL_WRITE_IRQ 7
+#define ACCEPT_IRQ 8
+#define MCONSOLE_IRQ 9
+#define WINCH_IRQ 10
+#define SIGIO_WRITE_IRQ 11
+#define TELNETD_IRQ 12
+#define XTERM_IRQ 13
+#define RANDOM_IRQ 14
+
+#define LAST_IRQ RANDOM_IRQ
+#define NR_IRQS (LAST_IRQ + 1)
+
+#endif
diff --git a/arch/um/include/asm/irq_regs.h b/arch/um/include/asm/irq_regs.h
new file mode 100644
index 00000000000..3dd9c0b7027
--- /dev/null
+++ b/arch/um/include/asm/irq_regs.h
@@ -0,0 +1 @@
+#include <asm-generic/irq_regs.h>
diff --git a/arch/um/include/asm/irq_vectors.h b/arch/um/include/asm/irq_vectors.h
new file mode 100644
index 00000000000..62ddba6fc73
--- /dev/null
+++ b/arch/um/include/asm/irq_vectors.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_IRQ_VECTORS_H
+#define __UM_IRQ_VECTORS_H
+
+#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:
+ */
diff --git a/arch/um/include/asm/irqflags.h b/arch/um/include/asm/irqflags.h
new file mode 100644
index 00000000000..659b9abdfdb
--- /dev/null
+++ b/arch/um/include/asm/irqflags.h
@@ -0,0 +1,6 @@
+#ifndef __UM_IRQFLAGS_H
+#define __UM_IRQFLAGS_H
+
+/* Empty for now */
+
+#endif
diff --git a/arch/um/include/asm/kdebug.h b/arch/um/include/asm/kdebug.h
new file mode 100644
index 00000000000..6ece1b03766
--- /dev/null
+++ b/arch/um/include/asm/kdebug.h
@@ -0,0 +1 @@
+#include <asm-generic/kdebug.h>
diff --git a/arch/um/include/asm/kmap_types.h b/arch/um/include/asm/kmap_types.h
new file mode 100644
index 00000000000..6c03acdb440
--- /dev/null
+++ b/arch/um/include/asm/kmap_types.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_KMAP_TYPES_H
+#define __UM_KMAP_TYPES_H
+
+/* No more #include "asm/arch/kmap_types.h" ! */
+
+enum km_type {
+ KM_BOUNCE_READ,
+ KM_SKB_SUNRPC_DATA,
+ KM_SKB_DATA_SOFTIRQ,
+ KM_USER0,
+ KM_USER1,
+ KM_UML_USERCOPY, /* UML specific, for copy_*_user - used in do_op_one_page */
+ KM_BIO_SRC_IRQ,
+ KM_BIO_DST_IRQ,
+ KM_PTE0,
+ KM_PTE1,
+ KM_IRQ0,
+ KM_IRQ1,
+ KM_SOFTIRQ0,
+ KM_SOFTIRQ1,
+ KM_TYPE_NR
+};
+
+#endif
diff --git a/arch/um/include/asm/mmu.h b/arch/um/include/asm/mmu.h
new file mode 100644
index 00000000000..2cf35c21d69
--- /dev/null
+++ b/arch/um/include/asm/mmu.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __MMU_H
+#define __MMU_H
+
+#include "um_mmu.h"
+
+#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:
+ */
diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
new file mode 100644
index 00000000000..54f42e8b010
--- /dev/null
+++ b/arch/um/include/asm/mmu_context.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_MMU_CONTEXT_H
+#define __UM_MMU_CONTEXT_H
+
+#include "linux/sched.h"
+#include "um_mmu.h"
+
+extern void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
+extern void arch_exit_mmap(struct mm_struct *mm);
+
+#define get_mmu_context(task) do ; while(0)
+#define activate_context(tsk) do ; while(0)
+
+#define deactivate_mm(tsk,mm) do { } while (0)
+
+extern void force_flush_all(void);
+
+static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
+{
+ /*
+ * This is called by fs/exec.c and sys_unshare()
+ * when the new ->mm is used for the first time.
+ */
+ __switch_mm(&new->context.id);
+ arch_dup_mmap(old, new);
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ struct task_struct *tsk)
+{
+ unsigned cpu = smp_processor_id();
+
+ if(prev != next){
+ cpu_clear(cpu, prev->cpu_vm_mask);
+ cpu_set(cpu, next->cpu_vm_mask);
+ if(next != &init_mm)
+ __switch_mm(&next->context.id);
+ }
+}
+
+static inline void enter_lazy_tlb(struct mm_struct *mm,
+ struct task_struct *tsk)
+{
+}
+
+extern int init_new_context(struct task_struct *task, struct mm_struct *mm);
+
+extern void destroy_context(struct mm_struct *mm);
+
+#endif
diff --git a/arch/um/include/asm/mutex.h b/arch/um/include/asm/mutex.h
new file mode 100644
index 00000000000..458c1f7fbc1
--- /dev/null
+++ b/arch/um/include/asm/mutex.h
@@ -0,0 +1,9 @@
+/*
+ * Pull in the generic implementation for the mutex fastpath.
+ *
+ * TODO: implement optimized primitives instead, or leave the generic
+ * implementation in place, or pick the atomic_xchg() based generic
+ * implementation. (see asm-generic/mutex-xchg.h for details)
+ */
+
+#include <asm-generic/mutex-dec.h>
diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h
new file mode 100644
index 00000000000..55f28a0bae6
--- /dev/null
+++ b/arch/um/include/asm/page.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
+ * Copyright 2003 PathScale, Inc.
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PAGE_H
+#define __UM_PAGE_H
+
+#include <linux/const.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+#ifndef __ASSEMBLY__
+
+struct page;
+
+#include <linux/types.h>
+#include <sysdep/vm-flags.h>
+
+/*
+ * These are used to make use of C type-checking..
+ */
+
+#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
+#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE)
+
+#define clear_user_page(page, vaddr, pg) clear_page(page)
+#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
+
+#if defined(CONFIG_3_LEVEL_PGTABLES) && !defined(CONFIG_64BIT)
+
+typedef struct { unsigned long pte_low, pte_high; } pte_t;
+typedef struct { unsigned long pmd; } pmd_t;
+typedef struct { unsigned long pgd; } pgd_t;
+#define pte_val(x) ((x).pte_low | ((unsigned long long) (x).pte_high << 32))
+
+#define pte_get_bits(pte, bits) ((pte).pte_low & (bits))
+#define pte_set_bits(pte, bits) ((pte).pte_low |= (bits))
+#define pte_clear_bits(pte, bits) ((pte).pte_low &= ~(bits))
+#define pte_copy(to, from) ({ (to).pte_high = (from).pte_high; \
+ smp_wmb(); \
+ (to).pte_low = (from).pte_low; })
+#define pte_is_zero(pte) (!((pte).pte_low & ~_PAGE_NEWPAGE) && !(pte).pte_high)
+#define pte_set_val(pte, phys, prot) \
+ ({ (pte).pte_high = (phys) >> 32; \
+ (pte).pte_low = (phys) | pgprot_val(prot); })
+
+#define pmd_val(x) ((x).pmd)
+#define __pmd(x) ((pmd_t) { (x) } )
+
+typedef unsigned long long pfn_t;
+typedef unsigned long long phys_t;
+
+#else
+
+typedef struct { unsigned long pte; } pte_t;
+typedef struct { unsigned long pgd; } pgd_t;
+
+#ifdef CONFIG_3_LEVEL_PGTABLES
+typedef struct { unsigned long pmd; } pmd_t;
+#define pmd_val(x) ((x).pmd)
+#define __pmd(x) ((pmd_t) { (x) } )
+#endif
+
+#define pte_val(x) ((x).pte)
+
+
+#define pte_get_bits(p, bits) ((p).pte & (bits))
+#define pte_set_bits(p, bits) ((p).pte |= (bits))
+#define pte_clear_bits(p, bits) ((p).pte &= ~(bits))
+#define pte_copy(to, from) ((to).pte = (from).pte)
+#define pte_is_zero(p) (!((p).pte & ~_PAGE_NEWPAGE))
+#define pte_set_val(p, phys, prot) (p).pte = (phys | pgprot_val(prot))
+
+typedef unsigned long pfn_t;
+typedef unsigned long phys_t;
+
+#endif
+
+typedef struct { unsigned long pgprot; } pgprot_t;
+
+typedef struct page *pgtable_t;
+
+#define pgd_val(x) ((x).pgd)
+#define pgprot_val(x) ((x).pgprot)
+
+#define __pte(x) ((pte_t) { (x) } )
+#define __pgd(x) ((pgd_t) { (x) } )
+#define __pgprot(x) ((pgprot_t) { (x) } )
+
+extern unsigned long uml_physmem;
+
+#define PAGE_OFFSET (uml_physmem)
+#define KERNELBASE PAGE_OFFSET
+
+#define __va_space (8*1024*1024)
+
+#include "mem.h"
+
+/* Cast to unsigned long before casting to void * to avoid a warning from
+ * mmap_kmem about cutting a long long down to a void *. Not sure that
+ * casting is the right thing, but 32-bit UML can't have 64-bit virtual
+ * addresses
+ */
+#define __pa(virt) to_phys((void *) (unsigned long) (virt))
+#define __va(phys) to_virt((unsigned long) (phys))
+
+#define phys_to_pfn(p) ((pfn_t) ((p) >> PAGE_SHIFT))
+#define pfn_to_phys(pfn) ((phys_t) ((pfn) << PAGE_SHIFT))
+
+#define pfn_valid(pfn) ((pfn) < max_mapnr)
+#define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v)))
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/page.h>
+
+#endif /* __ASSEMBLY__ */
+#endif /* __UM_PAGE_H */
diff --git a/arch/um/include/asm/page_offset.h b/arch/um/include/asm/page_offset.h
new file mode 100644
index 00000000000..1c168dfbf35
--- /dev/null
+++ b/arch/um/include/asm/page_offset.h
@@ -0,0 +1 @@
+#define PAGE_OFFSET_RAW (uml_physmem)
diff --git a/arch/um/include/asm/param.h b/arch/um/include/asm/param.h
new file mode 100644
index 00000000000..e44f4e60d16
--- /dev/null
+++ b/arch/um/include/asm/param.h
@@ -0,0 +1,20 @@
+#ifndef _UM_PARAM_H
+#define _UM_PARAM_H
+
+#define EXEC_PAGESIZE 4096
+
+#ifndef NOGROUP
+#define NOGROUP (-1)
+#endif
+
+#define MAXHOSTNAMELEN 64 /* max length of hostname */
+
+#ifdef __KERNEL__
+#define HZ CONFIG_HZ
+#define USER_HZ 100 /* .. some user interfaces are in "ticks" */
+#define CLOCKS_PER_SEC (USER_HZ) /* frequency at which times() counts */
+#else
+#define HZ 100
+#endif
+
+#endif
diff --git a/arch/um/include/asm/pci.h b/arch/um/include/asm/pci.h
new file mode 100644
index 00000000000..59923199cdc
--- /dev/null
+++ b/arch/um/include/asm/pci.h
@@ -0,0 +1,7 @@
+#ifndef __UM_PCI_H
+#define __UM_PCI_H
+
+#define PCI_DMA_BUS_IS_PHYS (1)
+#define pcibios_scan_all_fns(a, b) 0
+
+#endif
diff --git a/arch/um/include/asm/pda.h b/arch/um/include/asm/pda.h
new file mode 100644
index 00000000000..0d8bf33ffd4
--- /dev/null
+++ b/arch/um/include/asm/pda.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PDA_X86_64_H
+#define __UM_PDA_X86_64_H
+
+/* XXX */
+struct foo {
+ unsigned int __softirq_pending;
+ unsigned int __nmi_count;
+};
+
+extern struct foo me;
+
+#define read_pda(me) (&me)
+
+#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:
+ */
diff --git a/arch/um/include/asm/pgalloc.h b/arch/um/include/asm/pgalloc.h
new file mode 100644
index 00000000000..9062a6e7224
--- /dev/null
+++ b/arch/um/include/asm/pgalloc.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright 2003 PathScale, Inc.
+ * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PGALLOC_H
+#define __UM_PGALLOC_H
+
+#include "linux/mm.h"
+#include "asm/fixmap.h"
+
+#define pmd_populate_kernel(mm, pmd, pte) \
+ set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
+
+#define pmd_populate(mm, pmd, pte) \
+ set_pmd(pmd, __pmd(_PAGE_TABLE + \
+ ((unsigned long long)page_to_pfn(pte) << \
+ (unsigned long long) PAGE_SHIFT)))
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+/*
+ * Allocate and free page tables.
+ */
+extern pgd_t *pgd_alloc(struct mm_struct *);
+extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
+
+extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
+extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long);
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+ free_page((unsigned long) pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+ pgtable_page_dtor(pte);
+ __free_page(pte);
+}
+
+#define __pte_free_tlb(tlb,pte) \
+do { \
+ pgtable_page_dtor(pte); \
+ tlb_remove_page((tlb),(pte)); \
+} while (0)
+
+#ifdef CONFIG_3_LEVEL_PGTABLES
+
+static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+ free_page((unsigned long)pmd);
+}
+
+#define __pmd_free_tlb(tlb,x) tlb_remove_page((tlb),virt_to_page(x))
+#endif
+
+#define check_pgt_cache() do { } while (0)
+
+#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:
+ */
diff --git a/arch/um/include/asm/pgtable-2level.h b/arch/um/include/asm/pgtable-2level.h
new file mode 100644
index 00000000000..f534b73e753
--- /dev/null
+++ b/arch/um/include/asm/pgtable-2level.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright 2003 PathScale, Inc.
+ * Derived from include/asm-i386/pgtable.h
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PGTABLE_2LEVEL_H
+#define __UM_PGTABLE_2LEVEL_H
+
+#include <asm-generic/pgtable-nopmd.h>
+
+/* PGDIR_SHIFT determines what a third-level page table entry can map */
+
+#define PGDIR_SHIFT 22
+#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
+#define PGDIR_MASK (~(PGDIR_SIZE-1))
+
+/*
+ * entries per page directory level: the i386 is two-level, so
+ * we don't really have any PMD directory physically.
+ */
+#define PTRS_PER_PTE 1024
+#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
+#define PTRS_PER_PGD 1024
+#define FIRST_USER_ADDRESS 0
+
+#define pte_ERROR(e) \
+ printk("%s:%d: bad pte %p(%08lx).\n", __FILE__, __LINE__, &(e), \
+ pte_val(e))
+#define pgd_ERROR(e) \
+ printk("%s:%d: bad pgd %p(%08lx).\n", __FILE__, __LINE__, &(e), \
+ pgd_val(e))
+
+static inline int pgd_newpage(pgd_t pgd) { return 0; }
+static inline void pgd_mkuptodate(pgd_t pgd) { }
+
+#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
+
+#define pte_pfn(x) phys_to_pfn(pte_val(x))
+#define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot))
+#define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot))
+
+/*
+ * Bits 0 through 4 are taken
+ */
+#define PTE_FILE_MAX_BITS 27
+
+#define pte_to_pgoff(pte) (pte_val(pte) >> 5)
+
+#define pgoff_to_pte(off) ((pte_t) { ((off) << 5) + _PAGE_FILE })
+
+#endif
diff --git a/arch/um/include/asm/pgtable-3level.h b/arch/um/include/asm/pgtable-3level.h
new file mode 100644
index 00000000000..0446f456b42
--- /dev/null
+++ b/arch/um/include/asm/pgtable-3level.h
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2003 PathScale Inc
+ * Derived from include/asm-i386/pgtable.h
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PGTABLE_3LEVEL_H
+#define __UM_PGTABLE_3LEVEL_H
+
+#include <asm-generic/pgtable-nopud.h>
+
+/* PGDIR_SHIFT determines what a third-level page table entry can map */
+
+#ifdef CONFIG_64BIT
+#define PGDIR_SHIFT 30
+#else
+#define PGDIR_SHIFT 31
+#endif
+#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
+#define PGDIR_MASK (~(PGDIR_SIZE-1))
+
+/* PMD_SHIFT determines the size of the area a second-level page table can
+ * map
+ */
+
+#define PMD_SHIFT 21
+#define PMD_SIZE (1UL << PMD_SHIFT)
+#define PMD_MASK (~(PMD_SIZE-1))
+
+/*
+ * entries per page directory level
+ */
+
+#define PTRS_PER_PTE 512
+#ifdef CONFIG_64BIT
+#define PTRS_PER_PMD 512
+#define PTRS_PER_PGD 512
+#else
+#define PTRS_PER_PMD 1024
+#define PTRS_PER_PGD 1024
+#endif
+
+#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
+#define FIRST_USER_ADDRESS 0
+
+#define pte_ERROR(e) \
+ printk("%s:%d: bad pte %p(%016lx).\n", __FILE__, __LINE__, &(e), \
+ pte_val(e))
+#define pmd_ERROR(e) \
+ printk("%s:%d: bad pmd %p(%016lx).\n", __FILE__, __LINE__, &(e), \
+ pmd_val(e))
+#define pgd_ERROR(e) \
+ printk("%s:%d: bad pgd %p(%016lx).\n", __FILE__, __LINE__, &(e), \
+ pgd_val(e))
+
+#define pud_none(x) (!(pud_val(x) & ~_PAGE_NEWPAGE))
+#define pud_bad(x) ((pud_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
+#define pud_present(x) (pud_val(x) & _PAGE_PRESENT)
+#define pud_populate(mm, pud, pmd) \
+ set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd)))
+
+#ifdef CONFIG_64BIT
+#define set_pud(pudptr, pudval) set_64bit((phys_t *) (pudptr), pud_val(pudval))
+#else
+#define set_pud(pudptr, pudval) (*(pudptr) = (pudval))
+#endif
+
+static inline int pgd_newpage(pgd_t pgd)
+{
+ return(pgd_val(pgd) & _PAGE_NEWPAGE);
+}
+
+static inline void pgd_mkuptodate(pgd_t pgd) { pgd_val(pgd) &= ~_PAGE_NEWPAGE; }
+
+#ifdef CONFIG_64BIT
+#define set_pmd(pmdptr, pmdval) set_64bit((phys_t *) (pmdptr), pmd_val(pmdval))
+#else
+#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
+#endif
+
+struct mm_struct;
+extern pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address);
+
+static inline void pud_clear (pud_t *pud)
+{
+ set_pud(pud, __pud(_PAGE_NEWPAGE));
+}
+
+#define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
+#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PAGE_MASK))
+
+/* Find an entry in the second-level page table.. */
+#define pmd_offset(pud, address) ((pmd_t *) pud_page_vaddr(*(pud)) + \
+ pmd_index(address))
+
+static inline unsigned long pte_pfn(pte_t pte)
+{
+ return phys_to_pfn(pte_val(pte));
+}
+
+static inline pte_t pfn_pte(pfn_t page_nr, pgprot_t pgprot)
+{
+ pte_t pte;
+ phys_t phys = pfn_to_phys(page_nr);
+
+ pte_set_val(pte, phys, pgprot);
+ return pte;
+}
+
+static inline pmd_t pfn_pmd(pfn_t page_nr, pgprot_t pgprot)
+{
+ return __pmd((page_nr << PAGE_SHIFT) | pgprot_val(pgprot));
+}
+
+/*
+ * Bits 0 through 3 are taken in the low part of the pte,
+ * put the 32 bits of offset into the high part.
+ */
+#define PTE_FILE_MAX_BITS 32
+
+#ifdef CONFIG_64BIT
+
+#define pte_to_pgoff(p) ((p).pte >> 32)
+
+#define pgoff_to_pte(off) ((pte_t) { ((off) << 32) | _PAGE_FILE })
+
+#else
+
+#define pte_to_pgoff(pte) ((pte).pte_high)
+
+#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) })
+
+#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:
+ */
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
new file mode 100644
index 00000000000..58da2480a7f
--- /dev/null
+++ b/arch/um/include/asm/pgtable.h
@@ -0,0 +1,366 @@
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Copyright 2003 PathScale, Inc.
+ * Derived from include/asm-i386/pgtable.h
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PGTABLE_H
+#define __UM_PGTABLE_H
+
+#include <asm/fixmap.h>
+
+#define _PAGE_PRESENT 0x001
+#define _PAGE_NEWPAGE 0x002
+#define _PAGE_NEWPROT 0x004
+#define _PAGE_RW 0x020
+#define _PAGE_USER 0x040
+#define _PAGE_ACCESSED 0x080
+#define _PAGE_DIRTY 0x100
+/* If _PAGE_PRESENT is clear, we use these: */
+#define _PAGE_FILE 0x008 /* nonlinear file mapping, saved PTE; unset:swap */
+#define _PAGE_PROTNONE 0x010 /* if the user mapped it with PROT_NONE;
+ pte_present gives true */
+
+#ifdef CONFIG_3_LEVEL_PGTABLES
+#include "asm/pgtable-3level.h"
+#else
+#include "asm/pgtable-2level.h"
+#endif
+
+extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
+
+/* zero page used for uninitialized stuff */
+extern unsigned long *empty_zero_page;
+
+#define pgtable_cache_init() do ; while (0)
+
+/* Just any arbitrary offset to the start of the vmalloc VM area: the
+ * current 8MB value just means that there will be a 8MB "hole" after the
+ * physical memory until the kernel virtual memory starts. That means that
+ * any out-of-bounds memory accesses will hopefully be caught.
+ * The vmalloc() routines leaves a hole of 4kB between each vmalloced
+ * area for the same reason. ;)
+ */
+
+extern unsigned long end_iomem;
+
+#define VMALLOC_OFFSET (__va_space)
+#define VMALLOC_START ((end_iomem + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
+#define PKMAP_BASE ((FIXADDR_START - LAST_PKMAP * PAGE_SIZE) & PMD_MASK)
+#ifdef CONFIG_HIGHMEM
+# define VMALLOC_END (PKMAP_BASE-2*PAGE_SIZE)
+#else
+# define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
+#endif
+
+#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
+
+#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
+#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
+#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
+#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
+#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
+
+/*
+ * The i386 can't do page protection for execute, and considers that the same
+ * are read.
+ * Also, write permissions imply read permissions. This is the closest we can
+ * get..
+ */
+#define __P000 PAGE_NONE
+#define __P001 PAGE_READONLY
+#define __P010 PAGE_COPY
+#define __P011 PAGE_COPY
+#define __P100 PAGE_READONLY
+#define __P101 PAGE_READONLY
+#define __P110 PAGE_COPY
+#define __P111 PAGE_COPY
+
+#define __S000 PAGE_NONE
+#define __S001 PAGE_READONLY
+#define __S010 PAGE_SHARED
+#define __S011 PAGE_SHARED
+#define __S100 PAGE_READONLY
+#define __S101 PAGE_READONLY
+#define __S110 PAGE_SHARED
+#define __S111 PAGE_SHARED
+
+/*
+ * ZERO_PAGE is a global shared page that is always zero: used
+ * for zero-mapped memory areas etc..
+ */
+#define ZERO_PAGE(vaddr) virt_to_page(empty_zero_page)
+
+#define pte_clear(mm,addr,xp) pte_set_val(*(xp), (phys_t) 0, __pgprot(_PAGE_NEWPAGE))
+
+#define pmd_none(x) (!((unsigned long)pmd_val(x) & ~_PAGE_NEWPAGE))
+#define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
+
+#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
+#define pmd_clear(xp) do { pmd_val(*(xp)) = _PAGE_NEWPAGE; } while (0)
+
+#define pmd_newpage(x) (pmd_val(x) & _PAGE_NEWPAGE)
+#define pmd_mkuptodate(x) (pmd_val(x) &= ~_PAGE_NEWPAGE)
+
+#define pud_newpage(x) (pud_val(x) & _PAGE_NEWPAGE)
+#define pud_mkuptodate(x) (pud_val(x) &= ~_PAGE_NEWPAGE)
+
+#define pmd_page(pmd) phys_to_page(pmd_val(pmd) & PAGE_MASK)
+
+#define pte_page(x) pfn_to_page(pte_pfn(x))
+
+#define pte_present(x) pte_get_bits(x, (_PAGE_PRESENT | _PAGE_PROTNONE))
+
+/*
+ * =================================
+ * Flags checking section.
+ * =================================
+ */
+
+static inline int pte_none(pte_t pte)
+{
+ return pte_is_zero(pte);
+}
+
+/*
+ * The following only work if pte_present() is true.
+ * Undefined behaviour if not..
+ */
+static inline int pte_read(pte_t pte)
+{
+ return((pte_get_bits(pte, _PAGE_USER)) &&
+ !(pte_get_bits(pte, _PAGE_PROTNONE)));
+}
+
+static inline int pte_exec(pte_t pte){
+ return((pte_get_bits(pte, _PAGE_USER)) &&
+ !(pte_get_bits(pte, _PAGE_PROTNONE)));
+}
+
+static inline int pte_write(pte_t pte)
+{
+ return((pte_get_bits(pte, _PAGE_RW)) &&
+ !(pte_get_bits(pte, _PAGE_PROTNONE)));
+}
+
+/*
+ * The following only works if pte_present() is not true.
+ */
+static inline int pte_file(pte_t pte)
+{
+ return pte_get_bits(pte, _PAGE_FILE);
+}
+
+static inline int pte_dirty(pte_t pte)
+{
+ return pte_get_bits(pte, _PAGE_DIRTY);
+}
+
+static inline int pte_young(pte_t pte)
+{
+ return pte_get_bits(pte, _PAGE_ACCESSED);
+}
+
+static inline int pte_newpage(pte_t pte)
+{
+ return pte_get_bits(pte, _PAGE_NEWPAGE);
+}
+
+static inline int pte_newprot(pte_t pte)
+{
+ return(pte_present(pte) && (pte_get_bits(pte, _PAGE_NEWPROT)));
+}
+
+static inline int pte_special(pte_t pte)
+{
+ return 0;
+}
+
+/*
+ * =================================
+ * Flags setting section.
+ * =================================
+ */
+
+static inline pte_t pte_mknewprot(pte_t pte)
+{
+ pte_set_bits(pte, _PAGE_NEWPROT);
+ return(pte);
+}
+
+static inline pte_t pte_mkclean(pte_t pte)
+{
+ pte_clear_bits(pte, _PAGE_DIRTY);
+ return(pte);
+}
+
+static inline pte_t pte_mkold(pte_t pte)
+{
+ pte_clear_bits(pte, _PAGE_ACCESSED);
+ return(pte);
+}
+
+static inline pte_t pte_wrprotect(pte_t pte)
+{
+ pte_clear_bits(pte, _PAGE_RW);
+ return(pte_mknewprot(pte));
+}
+
+static inline pte_t pte_mkread(pte_t pte)
+{
+ pte_set_bits(pte, _PAGE_USER);
+ return(pte_mknewprot(pte));
+}
+
+static inline pte_t pte_mkdirty(pte_t pte)
+{
+ pte_set_bits(pte, _PAGE_DIRTY);
+ return(pte);
+}
+
+static inline pte_t pte_mkyoung(pte_t pte)
+{
+ pte_set_bits(pte, _PAGE_ACCESSED);
+ return(pte);
+}
+
+static inline pte_t pte_mkwrite(pte_t pte)
+{
+ pte_set_bits(pte, _PAGE_RW);
+ return(pte_mknewprot(pte));
+}
+
+static inline pte_t pte_mkuptodate(pte_t pte)
+{
+ pte_clear_bits(pte, _PAGE_NEWPAGE);
+ if(pte_present(pte))
+ pte_clear_bits(pte, _PAGE_NEWPROT);
+ return(pte);
+}
+
+static inline pte_t pte_mknewpage(pte_t pte)
+{
+ pte_set_bits(pte, _PAGE_NEWPAGE);
+ return(pte);
+}
+
+static inline pte_t pte_mkspecial(pte_t pte)
+{
+ return(pte);
+}
+
+static inline void set_pte(pte_t *pteptr, pte_t pteval)
+{
+ pte_copy(*pteptr, pteval);
+
+ /* If it's a swap entry, it needs to be marked _PAGE_NEWPAGE so
+ * fix_range knows to unmap it. _PAGE_NEWPROT is specific to
+ * mapped pages.
+ */
+
+ *pteptr = pte_mknewpage(*pteptr);
+ if(pte_present(*pteptr)) *pteptr = pte_mknewprot(*pteptr);
+}
+#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
+
+/*
+ * Conversion functions: convert a page and protection to a page entry,
+ * and a page entry and page directory to the page they refer to.
+ */
+
+#define phys_to_page(phys) pfn_to_page(phys_to_pfn(phys))
+#define __virt_to_page(virt) phys_to_page(__pa(virt))
+#define page_to_phys(page) pfn_to_phys((pfn_t) page_to_pfn(page))
+#define virt_to_page(addr) __virt_to_page((const unsigned long) addr)
+
+#define mk_pte(page, pgprot) \
+ ({ pte_t pte; \
+ \
+ pte_set_val(pte, page_to_phys(page), (pgprot)); \
+ if (pte_present(pte)) \
+ pte_mknewprot(pte_mknewpage(pte)); \
+ pte;})
+
+static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+{
+ pte_set_val(pte, (pte_val(pte) & _PAGE_CHG_MASK), newprot);
+ return pte;
+}
+
+/*
+ * the pgd page can be thought of an array like this: pgd_t[PTRS_PER_PGD]
+ *
+ * this macro returns the index of the entry in the pgd page which would
+ * control the given virtual address
+ */
+#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
+
+/*
+ * pgd_offset() returns a (pgd_t *)
+ * pgd_index() is used get the offset into the pgd page's array of pgd_t's;
+ */
+#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
+
+/*
+ * a shortcut which implies the use of the kernel's pgd, instead
+ * of a process's
+ */
+#define pgd_offset_k(address) pgd_offset(&init_mm, address)
+
+/*
+ * the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD]
+ *
+ * this macro returns the index of the entry in the pmd page which would
+ * control the given virtual address
+ */
+#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
+#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
+
+#define pmd_page_vaddr(pmd) \
+ ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
+
+/*
+ * the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
+ *
+ * this macro returns the index of the entry in the pte page which would
+ * control the given virtual address
+ */
+#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define pte_offset_kernel(dir, address) \
+ ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
+#define pte_offset_map(dir, address) \
+ ((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
+#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
+#define pte_unmap(pte) do { } while (0)
+#define pte_unmap_nested(pte) do { } while (0)
+
+struct mm_struct;
+extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
+
+#define update_mmu_cache(vma,address,pte) do ; while (0)
+
+/* Encode and de-code a swap entry */
+#define __swp_type(x) (((x).val >> 4) & 0x3f)
+#define __swp_offset(x) ((x).val >> 11)
+
+#define __swp_entry(type, offset) \
+ ((swp_entry_t) { ((type) << 4) | ((offset) << 11) })
+#define __pte_to_swp_entry(pte) \
+ ((swp_entry_t) { pte_val(pte_mkuptodate(pte)) })
+#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
+
+#define kern_addr_valid(addr) (1)
+
+#include <asm-generic/pgtable.h>
+
+/* Clear a kernel PTE and flush it from the TLB */
+#define kpte_clear_flush(ptep, vaddr) \
+do { \
+ pte_clear(&init_mm, (vaddr), (ptep)); \
+ __flush_tlb_one((vaddr)); \
+} while (0)
+
+#endif
diff --git a/arch/um/include/asm/processor-generic.h b/arch/um/include/asm/processor-generic.h
new file mode 100644
index 00000000000..bed668824b5
--- /dev/null
+++ b/arch/um/include/asm/processor-generic.h
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PROCESSOR_GENERIC_H
+#define __UM_PROCESSOR_GENERIC_H
+
+struct pt_regs;
+
+struct task_struct;
+
+#include "asm/ptrace.h"
+#include "registers.h"
+#include "sysdep/archsetjmp.h"
+
+struct mm_struct;
+
+struct thread_struct {
+ struct task_struct *saved_task;
+ /*
+ * This flag is set to 1 before calling do_fork (and analyzed in
+ * copy_thread) to mark that we are begin called from userspace (fork /
+ * vfork / clone), and reset to 0 after. It is left to 0 when called
+ * from kernelspace (i.e. kernel_thread() or fork_idle(),
+ * as of 2.6.11).
+ */
+ int forking;
+ struct pt_regs regs;
+ int singlestep_syscall;
+ void *fault_addr;
+ jmp_buf *fault_catcher;
+ struct task_struct *prev_sched;
+ unsigned long temp_stack;
+ jmp_buf *exec_buf;
+ struct arch_thread arch;
+ jmp_buf switch_buf;
+ int mm_count;
+ struct {
+ int op;
+ union {
+ struct {
+ int pid;
+ } fork, exec;
+ struct {
+ int (*proc)(void *);
+ void *arg;
+ } thread;
+ struct {
+ void (*proc)(void *);
+ void *arg;
+ } cb;
+ } u;
+ } request;
+};
+
+#define INIT_THREAD \
+{ \
+ .forking = 0, \
+ .regs = EMPTY_REGS, \
+ .fault_addr = NULL, \
+ .prev_sched = NULL, \
+ .temp_stack = 0, \
+ .exec_buf = NULL, \
+ .arch = INIT_ARCH_THREAD, \
+ .request = { 0 } \
+}
+
+extern struct task_struct *alloc_task_struct(void);
+
+static inline void release_thread(struct task_struct *task)
+{
+}
+
+extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+static inline void prepare_to_copy(struct task_struct *tsk)
+{
+}
+
+
+extern unsigned long thread_saved_pc(struct task_struct *t);
+
+static inline void mm_copy_segments(struct mm_struct *from_mm,
+ struct mm_struct *new_mm)
+{
+}
+
+#define init_stack (init_thread_union.stack)
+
+/*
+ * User space process size: 3GB (default).
+ */
+extern unsigned long task_size;
+
+#define TASK_SIZE (task_size)
+
+#undef STACK_TOP
+#undef STACK_TOP_MAX
+
+extern unsigned long stacksizelim;
+
+#define STACK_ROOM (stacksizelim)
+#define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE)
+#define STACK_TOP_MAX STACK_TOP
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE (0x40000000)
+
+extern void start_thread(struct pt_regs *regs, unsigned long entry,
+ unsigned long stack);
+
+struct cpuinfo_um {
+ unsigned long loops_per_jiffy;
+ int ipi_pipe[2];
+};
+
+extern struct cpuinfo_um boot_cpu_data;
+
+#define my_cpu_data cpu_data[smp_processor_id()]
+
+#ifdef CONFIG_SMP
+extern struct cpuinfo_um cpu_data[];
+#define current_cpu_data cpu_data[smp_processor_id()]
+#else
+#define cpu_data (&boot_cpu_data)
+#define current_cpu_data boot_cpu_data
+#endif
+
+
+#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
+extern unsigned long get_wchan(struct task_struct *p);
+
+#endif
diff --git a/arch/um/include/asm/ptrace-generic.h b/arch/um/include/asm/ptrace-generic.h
new file mode 100644
index 00000000000..6c8899013c9
--- /dev/null
+++ b/arch/um/include/asm/ptrace-generic.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PTRACE_GENERIC_H
+#define __UM_PTRACE_GENERIC_H
+
+#ifndef __ASSEMBLY__
+
+#include <asm/ptrace-abi.h>
+#include <asm/user.h>
+#include "sysdep/ptrace.h"
+
+struct pt_regs {
+ struct uml_pt_regs regs;
+};
+
+#define EMPTY_REGS { .regs = EMPTY_UML_PT_REGS }
+
+#define PT_REGS_IP(r) UPT_IP(&(r)->regs)
+#define PT_REGS_SP(r) UPT_SP(&(r)->regs)
+
+#define PT_REG(r, reg) UPT_REG(&(r)->regs, reg)
+#define PT_REGS_SET(r, reg, val) UPT_SET(&(r)->regs, reg, val)
+
+#define PT_REGS_SET_SYSCALL_RETURN(r, res) \
+ UPT_SET_SYSCALL_RETURN(&(r)->regs, res)
+#define PT_REGS_RESTART_SYSCALL(r) UPT_RESTART_SYSCALL(&(r)->regs)
+
+#define PT_REGS_SYSCALL_NR(r) UPT_SYSCALL_NR(&(r)->regs)
+
+#define PT_REGS_SC(r) UPT_SC(&(r)->regs)
+
+#define instruction_pointer(regs) PT_REGS_IP(regs)
+
+struct task_struct;
+
+extern long subarch_ptrace(struct task_struct *child, long request, long addr,
+ long data);
+extern unsigned long getreg(struct task_struct *child, int regno);
+extern int putreg(struct task_struct *child, int regno, unsigned long value);
+extern int get_fpregs(struct user_i387_struct __user *buf,
+ struct task_struct *child);
+extern int set_fpregs(struct user_i387_struct __user *buf,
+ struct task_struct *child);
+
+extern void show_regs(struct pt_regs *regs);
+
+extern int arch_copy_tls(struct task_struct *new);
+extern void clear_flushed_tls(struct task_struct *task);
+
+#endif
+
+#endif
diff --git a/arch/um/include/asm/required-features.h b/arch/um/include/asm/required-features.h
new file mode 100644
index 00000000000..dfb967b2d2f
--- /dev/null
+++ b/arch/um/include/asm/required-features.h
@@ -0,0 +1,9 @@
+#ifndef __UM_REQUIRED_FEATURES_H
+#define __UM_REQUIRED_FEATURES_H
+
+/*
+ * Nothing to see, just need something for the i386 and x86_64 asm
+ * headers to include.
+ */
+
+#endif
diff --git a/arch/um/include/asm/sections.h b/arch/um/include/asm/sections.h
new file mode 100644
index 00000000000..6b0231eefea
--- /dev/null
+++ b/arch/um/include/asm/sections.h
@@ -0,0 +1,7 @@
+#ifndef _UM_SECTIONS_H
+#define _UM_SECTIONS_H
+
+/* nothing to see, move along */
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/um/include/asm/segment.h b/arch/um/include/asm/segment.h
new file mode 100644
index 00000000000..45183fcd10b
--- /dev/null
+++ b/arch/um/include/asm/segment.h
@@ -0,0 +1,10 @@
+#ifndef __UM_SEGMENT_H
+#define __UM_SEGMENT_H
+
+extern int host_gdt_entry_tls_min;
+
+#define GDT_ENTRY_TLS_ENTRIES 3
+#define GDT_ENTRY_TLS_MIN host_gdt_entry_tls_min
+#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
+
+#endif
diff --git a/arch/um/include/asm/setup.h b/arch/um/include/asm/setup.h
new file mode 100644
index 00000000000..99f086301f4
--- /dev/null
+++ b/arch/um/include/asm/setup.h
@@ -0,0 +1,10 @@
+#ifndef SETUP_H_INCLUDED
+#define SETUP_H_INCLUDED
+
+/* POSIX mandated with _POSIX_ARG_MAX that we can rely on 4096 chars in the
+ * command line, so this choice is ok.
+ */
+
+#define COMMAND_LINE_SIZE 4096
+
+#endif /* SETUP_H_INCLUDED */
diff --git a/arch/um/include/asm/smp.h b/arch/um/include/asm/smp.h
new file mode 100644
index 00000000000..f27a9631317
--- /dev/null
+++ b/arch/um/include/asm/smp.h
@@ -0,0 +1,33 @@
+#ifndef __UM_SMP_H
+#define __UM_SMP_H
+
+#ifdef CONFIG_SMP
+
+#include "linux/bitops.h"
+#include "asm/current.h"
+#include "linux/cpumask.h"
+
+#define raw_smp_processor_id() (current_thread->cpu)
+
+#define cpu_logical_map(n) (n)
+#define cpu_number_map(n) (n)
+#define PROC_CHANGE_PENALTY 15 /* Pick a number, any number */
+extern int hard_smp_processor_id(void);
+#define NO_PROC_ID -1
+
+extern int ncpus;
+
+
+static inline void smp_cpus_done(unsigned int maxcpus)
+{
+}
+
+extern struct task_struct *idle_threads[NR_CPUS];
+
+#else
+
+#define hard_smp_processor_id() 0
+
+#endif
+
+#endif
diff --git a/arch/um/include/asm/suspend.h b/arch/um/include/asm/suspend.h
new file mode 100644
index 00000000000..f4e8e007f46
--- /dev/null
+++ b/arch/um/include/asm/suspend.h
@@ -0,0 +1,4 @@
+#ifndef __UM_SUSPEND_H
+#define __UM_SUSPEND_H
+
+#endif
diff --git a/arch/um/include/asm/system.h b/arch/um/include/asm/system.h
new file mode 100644
index 00000000000..753346e2cdf
--- /dev/null
+++ b/arch/um/include/asm/system.h
@@ -0,0 +1,35 @@
+#ifndef __UM_SYSTEM_GENERIC_H
+#define __UM_SYSTEM_GENERIC_H
+
+#include "sysdep/system.h"
+
+extern void *switch_to(void *prev, void *next, void *last);
+
+extern int get_signals(void);
+extern int set_signals(int enable);
+extern int get_signals(void);
+extern void block_signals(void);
+extern void unblock_signals(void);
+
+#define local_save_flags(flags) do { typecheck(unsigned long, flags); \
+ (flags) = get_signals(); } while(0)
+#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \
+ set_signals(flags); } while(0)
+
+#define local_irq_save(flags) do { local_save_flags(flags); \
+ local_irq_disable(); } while(0)
+
+#define local_irq_enable() unblock_signals()
+#define local_irq_disable() block_signals()
+
+#define irqs_disabled() \
+({ \
+ unsigned long flags; \
+ local_save_flags(flags); \
+ (flags == 0); \
+})
+
+extern void *_switch_to(void *prev, void *next, void *last);
+#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
+
+#endif
diff --git a/arch/um/include/asm/thread_info.h b/arch/um/include/asm/thread_info.h
new file mode 100644
index 00000000000..62274ab9471
--- /dev/null
+++ b/arch/um/include/asm/thread_info.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_THREAD_INFO_H
+#define __UM_THREAD_INFO_H
+
+#ifndef __ASSEMBLY__
+
+#include <asm/types.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+
+struct thread_info {
+ struct task_struct *task; /* main task structure */
+ struct exec_domain *exec_domain; /* execution domain */
+ unsigned long flags; /* low level flags */
+ __u32 cpu; /* current CPU */
+ int preempt_count; /* 0 => preemptable,
+ <0 => BUG */
+ mm_segment_t addr_limit; /* thread address space:
+ 0-0xBFFFFFFF for user
+ 0-0xFFFFFFFF for kernel */
+ struct restart_block restart_block;
+ struct thread_info *real_thread; /* Points to non-IRQ stack */
+};
+
+#define INIT_THREAD_INFO(tsk) \
+{ \
+ .task = &tsk, \
+ .exec_domain = &default_exec_domain, \
+ .flags = 0, \
+ .cpu = 0, \
+ .preempt_count = 1, \
+ .addr_limit = KERNEL_DS, \
+ .restart_block = { \
+ .fn = do_no_restart_syscall, \
+ }, \
+ .real_thread = NULL, \
+}
+
+#define init_thread_info (init_thread_union.thread_info)
+#define init_stack (init_thread_union.stack)
+
+#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+ struct thread_info *ti;
+ unsigned long mask = THREAD_SIZE - 1;
+ ti = (struct thread_info *) (((unsigned long) &ti) & ~mask);
+ return ti;
+}
+
+#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
+
+#endif
+
+#define PREEMPT_ACTIVE 0x10000000
+
+#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
+#define TIF_SIGPENDING 1 /* signal pending */
+#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
+#define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling
+ * TIF_NEED_RESCHED
+ */
+#define TIF_RESTART_BLOCK 4
+#define TIF_MEMDIE 5
+#define TIF_SYSCALL_AUDIT 6
+#define TIF_RESTORE_SIGMASK 7
+#define TIF_FREEZE 16 /* is freezing for suspend */
+
+#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
+#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
+#define _TIF_MEMDIE (1 << TIF_MEMDIE)
+#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
+#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
+#define _TIF_FREEZE (1 << TIF_FREEZE)
+
+#endif
diff --git a/arch/um/include/asm/timex.h b/arch/um/include/asm/timex.h
new file mode 100644
index 00000000000..0f4ada08f74
--- /dev/null
+++ b/arch/um/include/asm/timex.h
@@ -0,0 +1,13 @@
+#ifndef __UM_TIMEX_H
+#define __UM_TIMEX_H
+
+typedef unsigned long cycles_t;
+
+static inline cycles_t get_cycles (void)
+{
+ return 0;
+}
+
+#define CLOCK_TICK_RATE (HZ)
+
+#endif
diff --git a/arch/um/include/asm/tlb.h b/arch/um/include/asm/tlb.h
new file mode 100644
index 00000000000..5240fa1c5e0
--- /dev/null
+++ b/arch/um/include/asm/tlb.h
@@ -0,0 +1,127 @@
+#ifndef __UM_TLB_H
+#define __UM_TLB_H
+
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+#include <asm/percpu.h>
+#include <asm/pgalloc.h>
+#include <asm/tlbflush.h>
+
+#define tlb_start_vma(tlb, vma) do { } while (0)
+#define tlb_end_vma(tlb, vma) do { } while (0)
+#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
+
+/* struct mmu_gather is an opaque type used by the mm code for passing around
+ * any data needed by arch specific code for tlb_remove_page.
+ */
+struct mmu_gather {
+ struct mm_struct *mm;
+ unsigned int need_flush; /* Really unmapped some ptes? */
+ unsigned long start;
+ unsigned long end;
+ unsigned int fullmm; /* non-zero means full mm flush */
+};
+
+/* Users of the generic TLB shootdown code must declare this storage space. */
+DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
+
+static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
+ unsigned long address)
+{
+ if (tlb->start > address)
+ tlb->start = address;
+ if (tlb->end < address + PAGE_SIZE)
+ tlb->end = address + PAGE_SIZE;
+}
+
+static inline void init_tlb_gather(struct mmu_gather *tlb)
+{
+ tlb->need_flush = 0;
+
+ tlb->start = TASK_SIZE;
+ tlb->end = 0;
+
+ if (tlb->fullmm) {
+ tlb->start = 0;
+ tlb->end = TASK_SIZE;
+ }
+}
+
+/* tlb_gather_mmu
+ * Return a pointer to an initialized struct mmu_gather.
+ */
+static inline struct mmu_gather *
+tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
+{
+ struct mmu_gather *tlb = &get_cpu_var(mmu_gathers);
+
+ tlb->mm = mm;
+ tlb->fullmm = full_mm_flush;
+
+ init_tlb_gather(tlb);
+
+ return tlb;
+}
+
+extern void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
+ unsigned long end);
+
+static inline void
+tlb_flush_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
+{
+ if (!tlb->need_flush)
+ return;
+
+ flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end);
+ init_tlb_gather(tlb);
+}
+
+/* tlb_finish_mmu
+ * Called at the end of the shootdown operation to free up any resources
+ * that were required.
+ */
+static inline void
+tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
+{
+ tlb_flush_mmu(tlb, start, end);
+
+ /* keep the page table cache within bounds */
+ check_pgt_cache();
+
+ put_cpu_var(mmu_gathers);
+}
+
+/* tlb_remove_page
+ * Must perform the equivalent to __free_pte(pte_get_and_clear(ptep)),
+ * while handling the additional races in SMP caused by other CPUs
+ * caching valid mappings in their TLBs.
+ */
+static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
+{
+ tlb->need_flush = 1;
+ free_page_and_swap_cache(page);
+ return;
+}
+
+/**
+ * tlb_remove_tlb_entry - remember a pte unmapping for later tlb invalidation.
+ *
+ * Record the fact that pte's were really umapped in ->need_flush, so we can
+ * later optimise away the tlb invalidate. This helps when userspace is
+ * unmapping already-unmapped pages, which happens quite a lot.
+ */
+#define tlb_remove_tlb_entry(tlb, ptep, address) \
+ do { \
+ tlb->need_flush = 1; \
+ __tlb_remove_tlb_entry(tlb, ptep, address); \
+ } while (0)
+
+#define pte_free_tlb(tlb, ptep) __pte_free_tlb(tlb, ptep)
+
+#define pud_free_tlb(tlb, pudp) __pud_free_tlb(tlb, pudp)
+
+#define pmd_free_tlb(tlb, pmdp) __pmd_free_tlb(tlb, pmdp)
+
+#define tlb_migrate_finish(mm) do {} while (0)
+
+#endif
diff --git a/arch/um/include/asm/tlbflush.h b/arch/um/include/asm/tlbflush.h
new file mode 100644
index 00000000000..614f2c09117
--- /dev/null
+++ b/arch/um/include/asm/tlbflush.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_TLBFLUSH_H
+#define __UM_TLBFLUSH_H
+
+#include <linux/mm.h>
+
+/*
+ * TLB flushing:
+ *
+ * - flush_tlb() flushes the current mm struct TLBs
+ * - flush_tlb_all() flushes all processes TLBs
+ * - flush_tlb_mm(mm) flushes the specified mm context TLB's
+ * - flush_tlb_page(vma, vmaddr) flushes one page
+ * - flush_tlb_kernel_vm() flushes the kernel vm area
+ * - flush_tlb_range(vma, start, end) flushes a range of pages
+ */
+
+extern void flush_tlb_all(void);
+extern void flush_tlb_mm(struct mm_struct *mm);
+extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end);
+extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long address);
+extern void flush_tlb_kernel_vm(void);
+extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
+extern void __flush_tlb_one(unsigned long addr);
+
+#endif
diff --git a/arch/um/include/asm/topology.h b/arch/um/include/asm/topology.h
new file mode 100644
index 00000000000..0905e4f21d4
--- /dev/null
+++ b/arch/um/include/asm/topology.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_UM_TOPOLOGY_H
+#define _ASM_UM_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif
diff --git a/arch/um/include/asm/uaccess.h b/arch/um/include/asm/uaccess.h
new file mode 100644
index 00000000000..b9a895d6fa1
--- /dev/null
+++ b/arch/um/include/asm/uaccess.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_UACCESS_H
+#define __UM_UACCESS_H
+
+#include <asm/errno.h>
+#include <asm/processor.h>
+
+/* thread_info has a mm_segment_t in it, so put the definition up here */
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+#include "linux/thread_info.h"
+
+#define VERIFY_READ 0
+#define VERIFY_WRITE 1
+
+/*
+ * The fs value determines whether argument validity checking should be
+ * performed or not. If get_fs() == USER_DS, checking is performed, with
+ * get_fs() == KERNEL_DS, checking is bypassed.
+ *
+ * For historical reasons, these macros are grossly misnamed.
+ */
+
+#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
+
+#define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFF)
+#define USER_DS MAKE_MM_SEG(TASK_SIZE)
+
+#define get_ds() (KERNEL_DS)
+#define get_fs() (current_thread_info()->addr_limit)
+#define set_fs(x) (current_thread_info()->addr_limit = (x))
+
+#define segment_eq(a, b) ((a).seg == (b).seg)
+
+#include "um_uaccess.h"
+
+#define __copy_from_user(to, from, n) copy_from_user(to, from, n)
+
+#define __copy_to_user(to, from, n) copy_to_user(to, from, n)
+
+#define __copy_to_user_inatomic __copy_to_user
+#define __copy_from_user_inatomic __copy_from_user
+
+#define __get_user(x, ptr) \
+({ \
+ const __typeof__(*(ptr)) __user *__private_ptr = (ptr); \
+ __typeof__(x) __private_val; \
+ int __private_ret = -EFAULT; \
+ (x) = (__typeof__(*(__private_ptr)))0; \
+ if (__copy_from_user((__force void *)&__private_val, (__private_ptr),\
+ sizeof(*(__private_ptr))) == 0) { \
+ (x) = (__typeof__(*(__private_ptr))) __private_val; \
+ __private_ret = 0; \
+ } \
+ __private_ret; \
+})
+
+#define get_user(x, ptr) \
+({ \
+ const __typeof__((*(ptr))) __user *private_ptr = (ptr); \
+ (access_ok(VERIFY_READ, private_ptr, sizeof(*private_ptr)) ? \
+ __get_user(x, private_ptr) : ((x) = (__typeof__(*ptr))0, -EFAULT)); \
+})
+
+#define __put_user(x, ptr) \
+({ \
+ __typeof__(*(ptr)) __user *__private_ptr = ptr; \
+ __typeof__(*(__private_ptr)) __private_val; \
+ int __private_ret = -EFAULT; \
+ __private_val = (__typeof__(*(__private_ptr))) (x); \
+ if (__copy_to_user((__private_ptr), &__private_val, \
+ sizeof(*(__private_ptr))) == 0) { \
+ __private_ret = 0; \
+ } \
+ __private_ret; \
+})
+
+#define put_user(x, ptr) \
+({ \
+ __typeof__(*(ptr)) __user *private_ptr = (ptr); \
+ (access_ok(VERIFY_WRITE, private_ptr, sizeof(*private_ptr)) ? \
+ __put_user(x, private_ptr) : -EFAULT); \
+})
+
+#define strlen_user(str) strnlen_user(str, ~0U >> 1)
+
+struct exception_table_entry
+{
+ unsigned long insn;
+ unsigned long fixup;
+};
+
+#endif
diff --git a/arch/um/include/asm/xor.h b/arch/um/include/asm/xor.h
new file mode 100644
index 00000000000..a19db3e1724
--- /dev/null
+++ b/arch/um/include/asm/xor.h
@@ -0,0 +1,6 @@
+#ifndef __UM_XOR_H
+#define __UM_XOR_H
+
+#include "asm-generic/xor.h"
+
+#endif