Merge bk://linux.bkbits.net/linux-2.5

into samba.org:/scratch/anton/linux-2.5_ppc64

Documentation/filesystems/tmpfs.txt

+Tmpfs is a file system which keeps all files in virtual memory.
+
+
+Everything in tmpfs is temporary in the sense that no files will be
+created on your hard drive. If you unmount a tmpfs instance,
+everything stored therein is lost.
+
+tmpfs puts everything into the kernel internal caches and grows and
+shrinks to accommodate the files it contains and is able to swap
+unneeded pages out to swap space. It has maximum size limits which can
+be adjusted on the fly via 'mount -o remount ...'
+
+If you compare it to ramfs (which was the template to create tmpfs)
+you gain swapping and limit checking. Another similar thing is the RAM
+disk (/dev/ram*), which simulates a fixed size hard disk in physical
+RAM, where you have to create an ordinary filesystem on top. Ramdisks
+cannot swap and you do not have the possibility to resize them. 
+
+Since tmpfs lives completely in the page cache and on swap, all tmpfs
+pages currently in memory will show up as cached. It will not show up
+as shared or something like that. Further on you can check the actual
+RAM+swap use of a tmpfs instance with df(1) and du(1).
+
+
+tmpfs has the following uses:
+
+1) There is always a kernel internal mount which you will not see at
+   all. This is used for shared anonymous mappings and SYSV shared
+   memory. 
+
+   This mount does not depend on CONFIG_TMPFS. If CONFIG_TMPFS is not
+   set, the user visible part of tmpfs is not build. But the internal
+   mechanisms are always present.
+
+2) glibc 2.2 and above expects tmpfs to be mounted at /dev/shm for
+   POSIX shared memory (shm_open, shm_unlink). Adding the following
+   line to /etc/fstab should take care of this:
+
+	tmpfs	/dev/shm	tmpfs	defaults	0 0
+
+   Remember to create the directory that you intend to mount tmpfs on
+   if necessary (/dev/shm is automagically created if you use devfs).
+
+   This mount is _not_ needed for SYSV shared memory. The internal
+   mount is used for that. (In the 2.3 kernel versions it was
+   necessary to mount the predecessor of tmpfs (shm fs) to use SYSV
+   shared memory)
+
+3) Some people (including me) find it very convenient to mount it
+   e.g. on /tmp and /var/tmp and have a big swap partition. But be
+   aware: loop mounts of tmpfs files do not work due to the internal
+   design. So mkinitrd shipped by most distributions will fail with a
+   tmpfs /tmp.
+
+4) And probably a lot more I do not know about :-)
+
+
+tmpfs has a couple of mount options:
+
+size:	   The limit of allocated bytes for this tmpfs instance. The 
+           default is half of your physical RAM without swap. If you
+	   oversize your tmpfs instances the machine will deadlock
+	   since the OOM handler will not be able to free that memory.
+nr_blocks: The same as size, but in blocks of PAGECACHE_SIZE.
+nr_inodes: The maximum number of inodes for this instance. The default
+           is half of the number of your physical RAM pages.
+
+These parameters accept a suffix k, m or g for kilo, mega and giga and
+can be changed on remount.
+
+To specify the initial root directory you can use the following mount
+options:
+
+mode:	The permissions as an octal number
+uid:	The user id 
+gid:	The group id
+
+These options do not have any effect on remount. You can change these
+parameters with chmod(1), chown(1) and chgrp(1) on a mounted filesystem.
+
+
+So 'mount -t tmpfs -o size=10G,nr_inodes=10k,mode=700 tmpfs /mytmpfs'
+will give you tmpfs instance on /mytmpfs which can allocate 10GB
+RAM/SWAP in 10240 inodes and it is only accessible by root.
+
+
+TODOs:
+
+1) give the size option a percent semantic: If you give a mount option
+   size=50% the tmpfs instance should be able to grow to 50 percent of
+   RAM + swap. So the instance should adapt automatically if you add
+   or remove swap space.
+2) loop mounts: This is difficult since loop.c relies on the readpage
+   operation. This operation gets a page from the caller to be filled
+   with the content of the file at that position. But tmpfs always has
+   the page and thus cannot copy the content to the given page. So it
+   cannot provide this operation. The VM had to be changed seriously
+   to achieve this.
+3) Show the number of tmpfs RAM pages. (As shared?)
+
+Author:
+   Christoph Rohland <cr@sap.com>, 1.12.01

Makefile

 VERSION = 2
 PATCHLEVEL = 5
 SUBLEVEL = 7
-EXTRAVERSION =-pre1
+EXTRAVERSION =-pre2
 
 KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
 

Rules.make

@@ -120,6 +120,24 @@ $(L_TARGET): $(obj-y)
 	) > $(dir $@)/.$(notdir $@).flags
 endif
 
+#
+# Rule to link composite objects
+#
+
+# for make >= 3.78 the following is cleaner:
+# multi-used := $(foreach m,$(obj-y) $(obj-m), $(if $($(basename $(m))-objs), $(m)))
+multi-used := $(sort $(foreach m,$(obj-y) $(obj-m),$(patsubst %,$(m),$($(basename $(m))-objs))))
+ld-multi-used := $(filter-out $(list-multi),$(multi-used))
+ld-multi-objs := $(foreach m, $(ld-multi-used), $($(basename $(m))-objs))
+
+$(ld-multi-used) : %.o: $(ld-multi-objs)
+	rm -f $@
+	$(LD) $(EXTRA_LDFLAGS) -r -o $@ $(filter $($(basename $@)-objs), $^)
+	@ ( \
+	    echo 'ifeq ($(strip $(subst $(comma),:,$(LD) $(EXTRA_LDFLAGS) $($(basename $@)-objs)),$$(strip $$(subst $$(comma),:,$$(LD) $$(EXTRA_LDFLAGS) $$($(basename $@)-objs)))))' ; \
+	    echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
+	    echo 'endif' \
+	) > $(dir $@)/.$(notdir $@).flags
 
 #
 # This make dependencies quickly
@@ -200,8 +218,7 @@ script:
 #
 ifdef CONFIG_MODULES
 
-multi-used	:= $(filter $(list-multi), $(obj-y) $(obj-m))
-multi-objs	:= $(foreach m, $(multi-used), $($(basename $(m))-objs))
+multi-objs	:= $(foreach m, $(obj-y) $(obj-m), $($(basename $(m))-objs))
 active-objs	:= $(sort $(multi-objs) $(obj-y) $(obj-m))
 
 ifdef CONFIG_MODVERSIONS

arch/alpha/kernel/smp.c

@@ -460,7 +460,7 @@ smp_boot_one_cpu(int cpuid, int cpunum)
 	if (fork_by_hand() < 0)
 		panic("failed fork for CPU %d", cpuid);
 
-	idle = init_task.prev_task;
+	idle = prev_task(&init_task);
 	if (!idle)
 		panic("No idle process for CPU %d", cpuid);
 

arch/i386/Config.help

@@ -649,33 +649,32 @@ CONFIG_PM
   sending the processor to sleep and saving power.
 
 CONFIG_ACPI
-  ACPI/OSPM support for Linux is currently under development. As such,
-  this support is preliminary and EXPERIMENTAL.  Configuring ACPI
-  support enables kernel interfaces that allow higher level software
-  (OSPM) to manipulate ACPI defined hardware and software interfaces,
-  including the evaluation of ACPI control methods.  If unsure, choose
-  N here.  Note, this option will enlarge your kernel by about 120K.
-
-  This support requires an ACPI compliant platform (hardware/firmware).
-  If both ACPI and Advanced Power Management (APM) support are
-  configured, whichever is loaded first shall be used.
-
-  This code DOES NOT currently provide a complete OSPM implementation
-  -- it has not yet reached APM's level of functionality.  When fully
-  implemented, Linux ACPI/OSPM will provide a more robust functional
-  replacement for legacy configuration and power management
-  interfaces, including the Plug-and-Play BIOS specification (PnP
-  BIOS), the Multi-Processor Specification (MPS), and the Advanced
-  Power Management specification (APM).
-
-  Linux support for ACPI/OSPM is based on Intel Corporation's ACPI
-  Component Architecture (ACPI CA). The latest ACPI CA source code,
-  documentation, debug builds, and implementation status information
-  can be downloaded from:
-  <http://developer.intel.com/technology/iapc/acpi/downloads.htm>.
-
-  The ACPI Sourceforge project may also be of interest:
-  <http://sf.net/projects/acpi/>
+  Advanced Configuration and Power Interface (ACPI) support for 
+  Linux requires an ACPI compliant platform (hardware/firmware),
+  and assumes the presence of OS-directed configuration and power
+  management (OSPM) software.  This option will enlarge your 
+  kernel by about 70K.
+
+  Linux ACPI provides a robust functional replacement for several 
+  legacy configuration and power management intefaces, including 
+  the Plug-and-Play BIOS specification (PnP BIOS), the 
+  MultiProcessor Specification (MPS), and the Advanced Power 
+  Management (APM) specification.  If both ACPI and APM support 
+  are configured, whichever is loaded first shall be used.
+  
+  The ACPI SourceForge project contains the latest source code, 
+  documentation, tools, mailing list subscription, and other 
+  information.  This project is available at:
+    <http://sourceforge.net/projects/acpi>
+
+  Linux support for ACPI is based on Intel Corporation's ACPI
+  Component Architecture (ACPI CA).  For more information see:
+    <http://developer.intel.com/technology/iapc/acpi>
+
+  ACPI is an open industry specification co-developed by Compaq, 
+  Intel, Microsoft, Phoenix, and Toshiba.  The specification is 
+  available at:
+    <http://www.acpi.info>
 
 CONFIG_APM
   APM is a BIOS specification for saving power using several different

arch/i386/config.in

@@ -41,6 +41,7 @@ if [ "$CONFIG_M386" = "y" ]; then
    define_bool CONFIG_RWSEM_GENERIC_SPINLOCK y
    define_bool CONFIG_RWSEM_XCHGADD_ALGORITHM n
    define_bool CONFIG_X86_PPRO_FENCE y
+   define_bool CONFIG_X86_F00F_BUG y
 else
    define_bool CONFIG_X86_WP_WORKS_OK y
    define_bool CONFIG_X86_INVLPG y
@@ -56,12 +57,14 @@ if [ "$CONFIG_M486" = "y" ]; then
    define_bool CONFIG_X86_USE_STRING_486 y
    define_bool CONFIG_X86_ALIGNMENT_16 y
    define_bool CONFIG_X86_PPRO_FENCE y
+   define_bool CONFIG_X86_F00F_BUG y
 fi
 if [ "$CONFIG_M586" = "y" ]; then
    define_int  CONFIG_X86_L1_CACHE_SHIFT 5
    define_bool CONFIG_X86_USE_STRING_486 y
    define_bool CONFIG_X86_ALIGNMENT_16 y
    define_bool CONFIG_X86_PPRO_FENCE y
+   define_bool CONFIG_X86_F00F_BUG y
 fi
 if [ "$CONFIG_M586TSC" = "y" ]; then
    define_int  CONFIG_X86_L1_CACHE_SHIFT 5
@@ -69,6 +72,7 @@ if [ "$CONFIG_M586TSC" = "y" ]; then
    define_bool CONFIG_X86_ALIGNMENT_16 y
    define_bool CONFIG_X86_TSC y
    define_bool CONFIG_X86_PPRO_FENCE y
+   define_bool CONFIG_X86_F00F_BUG y
 fi
 if [ "$CONFIG_M586MMX" = "y" ]; then
    define_int  CONFIG_X86_L1_CACHE_SHIFT 5
@@ -77,6 +81,7 @@ if [ "$CONFIG_M586MMX" = "y" ]; then
    define_bool CONFIG_X86_TSC y
    define_bool CONFIG_X86_GOOD_APIC y
    define_bool CONFIG_X86_PPRO_FENCE y
+   define_bool CONFIG_X86_F00F_BUG y
 fi
 if [ "$CONFIG_M686" = "y" ]; then
    define_int  CONFIG_X86_L1_CACHE_SHIFT 5
@@ -203,6 +208,8 @@ endmenu
 mainmenu_option next_comment
 comment 'General options'
 
+source drivers/acpi/Config.in
+
 # Visual Workstation support is utterly broken.
 # If you want to see it working mail an VW540 to hch@infradead.org 8)
 #bool 'SGI Visual Workstation support' CONFIG_VISWS
@@ -261,14 +268,6 @@ tristate 'Kernel support for MISC binaries' CONFIG_BINFMT_MISC
 
 bool 'Power Management support' CONFIG_PM
 
-if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
-   dep_bool '  ACPI support' CONFIG_ACPI $CONFIG_PM
-   
-   if [ "$CONFIG_ACPI" != "n" ]; then
-      source drivers/acpi/Config.in
-   fi
-fi
-
 dep_tristate '  Advanced Power Management BIOS support' CONFIG_APM $CONFIG_PM
 if [ "$CONFIG_APM" != "n" ]; then
    bool '    Ignore USER SUSPEND' CONFIG_APM_IGNORE_USER_SUSPEND

arch/i386/defconfig

@@ -77,6 +77,11 @@ CONFIG_HAVE_DEC_LOCK=y
 #
 # General options
 #
+
+#
+# ACPI Support
+#
+# CONFIG_ACPI is not set
 CONFIG_X86_IO_APIC=y
 CONFIG_X86_LOCAL_APIC=y
 CONFIG_PCI=y
@@ -830,6 +835,7 @@ CONFIG_USB_UHCI_ALT=y
 # USB Device Class drivers
 #
 # CONFIG_USB_AUDIO is not set
+# CONFIG_USB_EMI26 is not set
 # CONFIG_USB_BLUETOOTH is not set
 CONFIG_USB_STORAGE=y
 # CONFIG_USB_STORAGE_DEBUG is not set

arch/i386/kernel/Makefile

@@ -36,9 +36,11 @@ obj-$(CONFIG_X86_MSR)		+= msr.o
 obj-$(CONFIG_X86_CPUID)		+= cpuid.o
 obj-$(CONFIG_MICROCODE)		+= microcode.o
 obj-$(CONFIG_APM)		+= apm.o
+obj-$(CONFIG_ACPI)		+= acpi.o
+obj-$(CONFIG_ACPI_SLEEP)	+= acpi_wakeup.o
 obj-$(CONFIG_SMP)		+= smp.o smpboot.o trampoline.o
 obj-$(CONFIG_X86_LOCAL_APIC)	+= mpparse.o apic.o nmi.o
-obj-$(CONFIG_X86_IO_APIC)	+= io_apic.o acpitable.o
+obj-$(CONFIG_X86_IO_APIC)	+= io_apic.o
 ifdef CONFIG_VISWS
 obj-y += setup-visws.o
 obj-$(CONFIG_X86_VISWS_APIC)	+= visws_apic.o

arch/i386/kernel/acpi_wakeup.S

+
+.text
+#include <linux/linkage.h>
+#include <asm/segment.h>
+
+
+ALIGN
+wakeup_start:
+wakeup_code:
+	wakeup_code_start = .
+	.code16
+
+	cli
+	cld
+
+	# setup data segment
+	movw	%cs, %ax
+
+	addw	$(wakeup_data - wakeup_code) >> 4, %ax
+	movw	%ax, %ds
+
+	# set up page table
+	movl	(real_save_cr3 - wakeup_data), %eax
+	movl	%eax, %cr3
+
+	# make sure %cr4 is set correctly (features, etc)
+	movl	(real_save_cr4 - wakeup_data), %eax
+	movl	%eax, %cr4
+
+	# need a gdt
+	lgdt	real_save_gdt - wakeup_data
+
+	movl	%cr0, %eax
+	orl     $0x80000001, %eax
+	movl	%eax, %cr0
+
+	ljmpl	$__KERNEL_CS,$SYMBOL_NAME(wakeup_pmode_return)
+
+	.code32
+	ALIGN
+
+.org	0x100
+wakeup_data:
+		.word 0
+real_save_gdt:	.word 0
+		.long 0
+real_save_cr3:	.long 0
+real_save_cr4:	.long 0
+
+.org	0x300
+wakeup_stack:
+wakeup_end:
+
+wakeup_pmode_return:
+	# restore data segment
+	movl	$__KERNEL_DS, %eax
+	movw	%ax, %ds
+	movw	%ax, %es
+
+	# and restore the stack
+	movw	%ax, %ss
+	movl	saved_esp, %esp
+
+	# restore other segment registers
+	xorl	%eax, %eax
+	movw	%ax, %fs
+	movw	%ax, %gs
+
+	# reload the gdt, as we need the full 32 bit address
+	lgdt	saved_gdt
+	lidt	saved_idt
+	lldt	saved_ldt
+
+	# restore the other general registers
+	movl	saved_ebx, %ebx
+	movl	saved_edi, %edi
+	movl	saved_esi, %esi
+	movl	saved_ebp, %ebp
+
+	# jump to place where we left off
+	movl	saved_eip,%eax
+	jmp	*%eax
+
+##
+# acpi_copy_wakeup_routine
+#
+# Copy the above routine to low memory.
+#
+# Parameters:
+# %eax:	place to copy wakeup routine to
+#
+# Returned address is location of code in low memory (past data and stack)
+#
+ENTRY(acpi_copy_wakeup_routine)
+
+	pushl	%esi
+	pushl	%edi
+
+	sgdt	saved_gdt
+	sidt	saved_idt
+	sldt	saved_ldt
+	str	saved_tss
+
+	movl	%eax, %edi
+	leal	wakeup_start, %esi
+	movl	$(wakeup_end - wakeup_start) >> 2, %ecx
+
+	rep ;  movsl
+
+	movl    %cr3, %edx
+	movl    %edx, real_save_cr3 - wakeup_start (%eax)
+	movl    %cr4, %edx
+	movl    %edx, real_save_cr4 - wakeup_start (%eax)
+	sgdt    real_save_gdt - wakeup_start (%eax)
+
+	# restore the regs we used
+	popl	%edi
+	popl	%esi
+	ret
+
+
+.data
+ALIGN
+# saved registers
+saved_gdt:	.long	0,0
+saved_idt:	.long	0,0
+saved_ldt:	.long	0
+saved_tss:	.long	0
+saved_cr0:	.long	0
+
+ENTRY(saved_ebp)	.long	0
+ENTRY(saved_esi)	.long	0
+ENTRY(saved_edi)	.long	0
+ENTRY(saved_ebx)	.long	0
+
+ENTRY(saved_eip)	.long	0
+ENTRY(saved_esp)	.long	0

arch/i386/kernel/acpitable.h

-/*
- *  acpitable.c - IA32-specific ACPI boot-time initialization (Revision: 1)
- *
- *  Copyright (C) 1999 Andrew Henroid
- *  Copyright (C) 2001 Richard Schaal
- *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
- *  Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
- *  Copyright (C) 2001 Arjan van de Ven <arjanv@redhat.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * $Id: acpitable.h,v 1.3 2001/11/03 22:41:34 fenrus Exp $
- */
-
-/*
- * The following codes are cut&pasted from drivers/acpi. Part of the code
- * there can be not updated or delivered yet.
- * To avoid conflicts when CONFIG_ACPI is defined, the following codes are
- * modified so that they are self-contained in this file.
- * -- jun
- */
- 
-#ifndef _HEADER_ACPITABLE_H_
-#define _HEADER_ACPITABLE_H_
-
-#define dprintk printk
-typedef unsigned int ACPI_TBLPTR;
-
-typedef struct {		/* ACPI common table header */
-	char signature[4];	/* identifies type of table */
-	u32 length;		/* length of table,
-				   in bytes, * including header */
-	u8 revision;		/* specification minor version # */
-	u8 checksum;		/* to make sum of entire table == 0 */
-	char oem_id[6];		/* OEM identification */
-	char oem_table_id[8];	/* OEM table identification */
-	u32 oem_revision;	/* OEM revision number */
-	char asl_compiler_id[4];	/* ASL compiler vendor ID */
-	u32 asl_compiler_revision;	/* ASL compiler revision number */
-} acpi_table_header __attribute__ ((packed));;
-
-enum {
-	ACPI_APIC = 0,
-	ACPI_BOOT,
-	ACPI_DBGP,
-	ACPI_DSDT,
-	ACPI_ECDT,
-	ACPI_ETDT,
-	ACPI_FACP,
-	ACPI_FACS,
-	ACPI_OEMX,
-	ACPI_PSDT,
-	ACPI_SBST,
-	ACPI_SLIT,
-	ACPI_SPCR,
-	ACPI_SRAT,
-	ACPI_SSDT,
-	ACPI_SPMI,
-	ACPI_XSDT,
-	ACPI_TABLE_COUNT
-};
-
-static char *acpi_table_signatures[ACPI_TABLE_COUNT] = {
-	"APIC",
-	"BOOT",
-	"DBGP",
-	"DSDT",
-	"ECDT",
-	"ETDT",
-	"FACP",
-	"FACS",
-	"OEM",
-	"PSDT",
-	"SBST",
-	"SLIT",
-	"SPCR",
-	"SRAT",
-	"SSDT",
-	"SPMI",
-	"XSDT"
-};
-
-struct acpi_table_madt {
-	acpi_table_header header;
-	u32 lapic_address;
-	struct {
-		u32 pcat_compat:1;
-		u32 reserved:31;
-	} flags __attribute__ ((packed));
-} __attribute__ ((packed));;
-
-enum {
-	ACPI_MADT_LAPIC = 0,
-	ACPI_MADT_IOAPIC,
-	ACPI_MADT_INT_SRC_OVR,
-	ACPI_MADT_NMI_SRC,
-	ACPI_MADT_LAPIC_NMI,
-	ACPI_MADT_LAPIC_ADDR_OVR,
-	ACPI_MADT_IOSAPIC,
-	ACPI_MADT_LSAPIC,
-	ACPI_MADT_PLAT_INT_SRC,
-	ACPI_MADT_ENTRY_COUNT
-};
-
-#define RSDP_SIG			"RSD PTR "
-#define RSDT_SIG 			"RSDT"
-
-#define ACPI_DEBUG_PRINT(pl)
-
-#define ACPI_MEMORY_MODE                0x01
-#define ACPI_LOGICAL_ADDRESSING         0x00
-#define ACPI_PHYSICAL_ADDRESSING        0x01
-
-#define LO_RSDP_WINDOW_BASE         	0	/* Physical Address */
-#define HI_RSDP_WINDOW_BASE         	0xE0000	/* Physical Address */
-#define LO_RSDP_WINDOW_SIZE         	0x400
-#define HI_RSDP_WINDOW_SIZE         	0x20000
-#define RSDP_SCAN_STEP			16
-#define RSDP_CHECKSUM_LENGTH		20
-
-typedef int (*acpi_table_handler) (acpi_table_header * header, unsigned long);
-
-struct acpi_table_rsdp {
-	char signature[8];
-	u8 checksum;
-	char oem_id[6];
-	u8 revision;
-	u32 rsdt_address;
-} __attribute__ ((packed));
-
-struct acpi_table_rsdt {
-	acpi_table_header header;
-	u32 entry[ACPI_TABLE_COUNT];
-} __attribute__ ((packed));
-
-typedef struct {
-	u8 type;
-	u8 length;
-} acpi_madt_entry_header __attribute__ ((packed));
-
-typedef struct {
-	u16 polarity:2;
-	u16 trigger:2;
-	u16 reserved:12;
-} acpi_madt_int_flags __attribute__ ((packed));
-
-struct acpi_table_lapic {
-	acpi_madt_entry_header header;
-	u8 acpi_id;
-	u8 id;
-	struct {
-		u32 enabled:1;
-		u32 reserved:31;
-	} flags __attribute__ ((packed));
-} __attribute__ ((packed));
-
-struct acpi_table_ioapic {
-	acpi_madt_entry_header header;
-	u8 id;
-	u8 reserved;
-	u32 address;
-	u32 global_irq_base;
-} __attribute__ ((packed));
-
-struct acpi_table_int_src_ovr {
-	acpi_madt_entry_header header;
-	u8 bus;
-	u8 bus_irq;
-	u32 global_irq;
-	acpi_madt_int_flags flags;
-} __attribute__ ((packed));
-
-struct acpi_table_nmi_src {
-	acpi_madt_entry_header header;
-	acpi_madt_int_flags flags;
-	u32 global_irq;
-} __attribute__ ((packed));
-
-struct acpi_table_lapic_nmi {
-	acpi_madt_entry_header header;
-	u8 acpi_id;
-	acpi_madt_int_flags flags;
-	u8 lint;
-} __attribute__ ((packed));
-
-struct acpi_table_lapic_addr_ovr {
-	acpi_madt_entry_header header;
-	u8 reserved[2];
-	u64 address;
-} __attribute__ ((packed));
-
-struct acpi_table_iosapic {
-	acpi_madt_entry_header header;
-	u8 id;
-	u8 reserved;
-	u32 global_irq_base;
-	u64 address;
-} __attribute__ ((packed));
-
-struct acpi_table_lsapic {
-	acpi_madt_entry_header header;
-	u8 acpi_id;
-	u8 id;
-	u8 eid;
-	u8 reserved[3];
-	struct {
-		u32 enabled:1;
-		u32 reserved:31;
-	} flags;
-} __attribute__ ((packed));
-
-struct acpi_table_plat_int_src {
-	acpi_madt_entry_header header;
-	acpi_madt_int_flags flags;
-	u8 type;
-	u8 id;
-	u8 eid;
-	u8 iosapic_vector;
-	u32 global_irq;
-	u32 reserved;
-} __attribute__ ((packed));
-
-/*
- * ACPI Table Descriptor.  One per ACPI table
- */
-typedef struct acpi_table_desc {
-	struct acpi_table_desc *prev;
-	struct acpi_table_desc *next;
-	struct acpi_table_desc *installed_desc;
-	acpi_table_header *pointer;
-	void *base_pointer;
-	u8 *aml_pointer;
-	u64 physical_address;
-	u32 aml_length;
-	u32 length;
-	u32 count;
-	u16 table_id;
-	u8 type;
-	u8 allocation;
-	u8 loaded_into_namespace;
-
-} acpi_table_desc __attribute__ ((packed));;
-
-#endif

arch/i386/kernel/head.S

@@ -178,7 +178,7 @@ checkCPUtype:
  * we don't need to preserve eflags.
  */
 
-	movl $3,X86		# at least 386
+	movb $3,X86		# at least 386
 	pushfl			# push EFLAGS
 	popl %eax		# get EFLAGS
 	movl %eax,%ecx		# save original EFLAGS
@@ -191,7 +191,7 @@ checkCPUtype:
 	andl $0x40000,%eax	# check if AC bit changed
 	je is386
 
-	movl $4,X86		# at least 486
+	movb $4,X86		# at least 486
 	movl %ecx,%eax
 	xorl $0x200000,%eax	# check ID flag
 	pushl %eax

arch/i386/kernel/mpparse.c

@@ -14,6 +14,7 @@
 
 #include <linux/mm.h>
 #include <linux/irq.h>
+#include <linux/acpi.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/config.h>
@@ -30,6 +31,9 @@
 /* Have we found an MP table */
 int smp_found_config;
 
+/* Have we found an ACPI MADT table */
+int acpi_found_madt = 0;
+
 /*
  * Various Linux-internal data structures created from the
  * MP-table.
@@ -65,6 +69,19 @@ static unsigned int num_processors;
 /* Bitmask of physically existing CPUs */
 unsigned long phys_cpu_present_map;
 
+/* ACPI MADT entry parsing functions */
+#ifdef CONFIG_ACPI_BOOT
+extern struct acpi_boot_flags acpi_boot;
+#ifdef CONFIG_X86_LOCAL_APIC
+extern int acpi_parse_lapic (acpi_table_entry_header *header);
+extern int acpi_parse_lapic_addr_ovr (acpi_table_entry_header *header);
+extern int acpi_parse_lapic_nmi (acpi_table_entry_header *header);
+#endif /*CONFIG_X86_LOCAL_APIC*/
+#ifdef CONFIG_X86_IO_APIC
+extern int acpi_parse_ioapic (acpi_table_entry_header *header);
+#endif /*CONFIG_X86_IO_APIC*/
+#endif /*CONFIG_ACPI_BOOT*/
+
 /*
  * Intel MP BIOS table parsing routines:
  */
@@ -122,13 +139,7 @@ static char __init *mpc_family(int family,int model)
 	return n;
 }
 
-#ifdef CONFIG_X86_IO_APIC
-extern int have_acpi_tables;	/* set by acpitable.c */
-#else
-#define have_acpi_tables (0)
-#endif
-
-/* 
+/*
  * Have to match translation table entries to main table entries by counter
  * hence the mpc_record variable .... can't see a less disgusting way of
  * doing this ....
@@ -427,10 +438,11 @@ static int __init smp_read_mpc(struct mp_config_table *mpc)
 
 	printk("APIC at: 0x%lX\n",mpc->mpc_lapic);
 
-	/* save the local APIC address, it might be non-default,
+	/*
+	 * Save the local APIC address, it might be non-default,
 	 * but only if we're not using the ACPI tables
 	 */
-	if (!have_acpi_tables)
+	if (!acpi_found_madt)
 		mp_lapic_addr = mpc->mpc_lapic;
 
 	if (clustered_apic_mode && mpc->mpc_oemptr) {
@@ -451,7 +463,7 @@ static int __init smp_read_mpc(struct mp_config_table *mpc)
 					(struct mpc_config_processor *)mpt;
 
 				/* ACPI may already have provided this one for us */
-				if (!have_acpi_tables)
+				if (!acpi_found_madt)
 					MP_processor_info(m);
 				mpt += sizeof(*m);
 				count += sizeof(*m);
@@ -665,7 +677,6 @@ static inline void __init construct_default_ISA_mptable(int mpc_default_type)
 }
 
 static struct intel_mp_floating *mpf_found;
-extern void 	config_acpi_tables(void);
 
 /*
  * Scan the memory blocks for an SMP configuration block.
@@ -674,16 +685,19 @@ void __init get_smp_config (void)
 {
 	struct intel_mp_floating *mpf = mpf_found;
 
-#ifdef CONFIG_X86_IO_APIC
+#ifdef CONFIG_ACPI_BOOT
 	/*
-	 * Check if the ACPI tables are provided. Use them only to get
-	 * the processor information, mainly because it provides
-	 * the info on the logical processor(s), rather than the physical
-	 * processor(s) that are provided by the MPS. We attempt to 
-	 * check only if the user provided a commandline override
+	 * Check if the MADT exists, and if so, use it to get processor
+	 * information (ACPI_MADT_LAPIC).  The MADT supports the concept
+	 * of both logical (e.g. HT) and physical processor(s); where the
+	 * MPS only supports physical.
 	 */
-	config_acpi_tables();
-#endif
+	if (acpi_boot.madt) {
+		acpi_found_madt = acpi_table_parse(ACPI_APIC, acpi_parse_madt);
+		if (acpi_found_madt > 0)
+			acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic);
+	}
+#endif /*CONFIG_ACPI_BOOT*/
 	
 	printk("Intel MultiProcessor Specification v1.%d\n", mpf->mpf_specification);
 	if (mpf->mpf_feature2 & (1<<7)) {

arch/i386/kernel/pci-i386.h

@@ -22,6 +22,7 @@
 #define PCI_ASSIGN_ROMS		0x1000
 #define PCI_BIOS_IRQ_SCAN	0x2000
 #define PCI_ASSIGN_ALL_BUSSES	0x4000
+#define PCI_NO_ACPI_ROUTING	0x8000
 
 extern unsigned int pci_probe;
 
@@ -65,6 +66,8 @@ struct irq_routing_table {
 
 extern unsigned int pcibios_irq_mask;
 
+extern int pci_use_acpi_routing;
+
 void pcibios_irq_init(void);
 void pcibios_fixup_irqs(void);
 void pcibios_enable_irq(struct pci_dev *dev);

arch/i386/kernel/pci-irq.c

@@ -12,7 +12,7 @@
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
-
+#include <linux/acpi.h>
 #include <asm/io.h>
 #include <asm/smp.h>
 #include <asm/io_apic.h>
@@ -22,6 +22,8 @@
 #define PIRQ_SIGNATURE	(('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
 #define PIRQ_VERSION 0x0100
 
+int pci_use_acpi_routing = 0;
+
 static struct irq_routing_table *pirq_table;
 
 /*
@@ -512,6 +514,41 @@ static void __init pirq_find_router(void)
 		pirq_router_dev->slot_name);
 }
 
+static void pcibios_test_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+}
+
+#ifdef CONFIG_ACPI_PCI
+
+static int acpi_lookup_irq (
+	struct pci_dev		*dev,
+	u8			pin,
+	int			assign)
+{
+	int			result = 0;
+	int			irq = 0;
+
+	/* TBD: Select IRQ from possible to improve routing performance. */
+
+	result = acpi_prt_get_irq(dev, pin, &irq);
+	if ((0 != result) || !irq) {
+		printk(KERN_ERR "PCI: Unable to resolve IRQ for device %s\n",
+			dev->slot_name);
+		return result;
+	}
+
+	printk(KERN_INFO "PCI: Found IRQ %d for device %s\n", irq, 
+		dev->slot_name);
+
+	dev->irq = irq;
+
+	pirq_penalty[irq]++;
+
+	return 1;
+}
+
+#endif /* CONFIG_ACPI_PCI */
+
 static struct irq_info *pirq_get_info(struct pci_dev *dev)
 {
 	struct irq_routing_table *rt = pirq_table;
@@ -524,38 +561,25 @@ static struct irq_info *pirq_get_info(struct pci_dev *dev)
 	return NULL;
 }
 
-static void pcibios_test_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static int pirq_lookup_irq(struct pci_dev *dev, u8 pin, int assign)
 {
-}
-
-static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
-{
-	u8 pin;
-	struct irq_info *info;
-	int i, pirq, newirq;
-	int irq = 0;
-	u32 mask;
 	struct irq_router *r = pirq_router;
+	struct irq_info *info;
+	int  newirq, pirq, i, irq = 0;
 	struct pci_dev *dev2;
 	char *msg = NULL;
+	u32 mask;
 
 	if (!pirq_table)
 		return 0;
 
-	/* Find IRQ routing entry */
-	pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
-	if (!pin) {
-		DBG(" -> no interrupt pin\n");
-		return 0;
-	}
-	pin = pin - 1;
-	
 	DBG("IRQ for %s:%d", dev->slot_name, pin);
 	info = pirq_get_info(dev);
 	if (!info) {
 		DBG(" -> not found in routing table\n");
 		return 0;
 	}
+
 	pirq = info->irq[pin].link;
 	mask = info->irq[pin].bitmap;
 	if (!pirq) {
@@ -643,10 +667,42 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
 	return 1;
 }
 
+static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
+{
+	u8 pin;
+
+	/* Find IRQ routing entry */
+	pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+	if (!pin) {
+		DBG("PCI: %s: no interrupt pin\n", dev->slot_name);
+		return 0;
+	}
+	pin -= 1;
+
+#ifdef CONFIG_ACPI_PCI
+	if (pci_use_acpi_routing)
+		return acpi_lookup_irq(dev, pin, assign);
+	else
+#endif
+		return pirq_lookup_irq(dev, pin, assign);
+}
+
 void __init pcibios_irq_init(void)
 {
 	DBG("PCI: IRQ init\n");
+
+#ifdef CONFIG_ACPI_PCI
+	if (acpi_prts.count && !(pci_probe & PCI_NO_ACPI_ROUTING)) {
+		printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
+		pci_use_acpi_routing = 1;
+		return;
+	}
+	if (!acpi_prts.count)
+		printk(KERN_INFO "PCI: Invalid acpi_prts [%d]\n", acpi_prts.count);
+#endif
+
 	pirq_table = pirq_find_routing_table();
+
 #ifdef CONFIG_PCI_BIOS
 	if (!pirq_table && (pci_probe & PCI_BIOS_IRQ_SCAN))
 		pirq_table = pcibios_get_irq_routing_table();

arch/i386/kernel/pci-pc.c

@@ -1239,6 +1239,24 @@ void __devinit  pcibios_fixup_bus(struct pci_bus *b)
 }
 
 
+struct pci_bus * __devinit pcibios_scan_root(int busnum)
+{
+	struct list_head *list;
+	struct pci_bus *bus;
+
+	list_for_each(list, &pci_root_buses) {
+		bus = pci_bus_b(list);
+		if (bus->number == busnum) {
+			/* Already scanned */
+			return bus;
+		}
+	}
+
+	printk("PCI: Probing PCI hardware (bus %02x)\n", busnum);
+
+	return pci_scan_bus(busnum, pci_root_ops, NULL);
+}
+
 void __devinit pcibios_config_init(void)
 {
 	/*
@@ -1285,7 +1303,7 @@ void __init pcibios_init(void)
 	}
 
 	printk("PCI: Probing PCI hardware\n");
-	pci_root_bus = pci_scan_bus(0, pci_root_ops, NULL);
+	pci_root_bus = pcibios_scan_root(0);
 	if (clustered_apic_mode && (numnodes > 1)) {
 		for (quad = 1; quad < numnodes; ++quad) {
 			printk("Scanning PCI bus %d for quad %d\n", 
@@ -1296,7 +1314,10 @@ void __init pcibios_init(void)
 	}
 
 	pcibios_irq_init();
-	pcibios_fixup_peer_bridges();
+
+	if (!pci_use_acpi_routing)
+		pcibios_fixup_peer_bridges();
+
 	pcibios_fixup_irqs();
 	pcibios_resource_survey();
 
@@ -1336,6 +1357,12 @@ char * __devinit  pcibios_setup(char *str)
 		pci_probe = PCI_PROBE_CONF2 | PCI_NO_CHECKS;
 		return NULL;
 	}
+#endif
+#ifdef CONFIG_ACPI_PCI
+	else if (!strcmp(str, "noacpi")) {
+		pci_probe |= PCI_NO_ACPI_ROUTING;
+		return NULL;
+	}
 #endif
 	else if (!strcmp(str, "rom")) {
 		pci_probe |= PCI_ASSIGN_ROMS;

arch/i386/kernel/setup.c

@@ -92,6 +92,7 @@
 #include <linux/delay.h>
 #include <linux/config.h>
 #include <linux/init.h>
+#include <linux/acpi.h>
 #include <linux/apm_bios.h>
 #ifdef CONFIG_BLK_DEV_RAM
 #include <linux/blk.h>
@@ -168,8 +169,6 @@ void __init visws_get_board_type_and_rev(void);
 static int disable_x86_serial_nr __initdata = 1;
 static int disable_x86_fxsr __initdata = 0;
 
-int enable_acpi_smp_table;
-
 /*
  * This is set up by the setup-routine at boot-time
  */
@@ -642,9 +641,6 @@ static void __init parse_mem_cmdline (char ** cmdline_p)
 				add_memory_region(start_at, mem_size, E820_RAM);
 			}
 		}
-		/* acpismp=force forces parsing and use of the ACPI SMP table */
-		if (c == ' ' && !memcmp(from, "acpismp=force", 13))
-			 enable_acpi_smp_table = 1;
 		/*
 		 * highmem=size forces highmem to be exactly 'size' bytes.
 		 * This works even on boxes that have no highmem otherwise.
@@ -869,7 +865,12 @@ void __init setup_arch(char **cmdline_p)
 	 */
 	reserve_bootmem(PAGE_SIZE, PAGE_SIZE);
 #endif
-
+#ifdef CONFIG_ACPI_SLEEP
+	/*
+	 * Reserve low memory region for sleep support.
+	 */
+	acpi_reserve_bootmem();
+#endif
 #ifdef CONFIG_X86_LOCAL_APIC
 	/*
 	 * Find and reserve possible boot-time SMP configuration:
@@ -903,6 +904,15 @@ void __init setup_arch(char **cmdline_p)
 	smp_alloc_memory(); /* AP processor realmode stacks in low memory*/
 #endif
 	paging_init();
+#ifdef CONFIG_ACPI_BOOT
+	/*
+	 * Initialize the ACPI boot-time table parser (gets the RSDP and SDT).
+	 * Must do this after paging_init (due to reliance on fixmap, and thus
+	 * the bootmem allocator) but before get_smp_config (to allow parsing
+	 * of MADT).
+	 */
+	acpi_table_init(*cmdline_p);
+#endif
 #ifdef CONFIG_X86_LOCAL_APIC
 	/*
 	 * get boot-time SMP configuration:
@@ -1961,13 +1971,10 @@ extern void trap_init_f00f_bug(void);
 
 static void __init init_intel(struct cpuinfo_x86 *c)
 {
-#ifndef CONFIG_M686
-	static int f00f_workaround_enabled = 0;
-#endif
 	char *p = NULL;
 	unsigned int l1i = 0, l1d = 0, l2 = 0, l3 = 0; /* Cache sizes */
 
-#ifndef CONFIG_M686
+#ifdef CONFIG_X86_F00F_BUG
 	/*
 	 * All current models of Pentium and Pentium with MMX technology CPUs
 	 * have the F0 0F bug, which lets nonpriviledged users lock up the system.
@@ -1975,6 +1982,8 @@ static void __init init_intel(struct cpuinfo_x86 *c)
 	 */
 	c->f00f_bug = 0;
 	if ( c->x86 == 5 ) {
+		static int f00f_workaround_enabled = 0;
+
 		c->f00f_bug = 1;
 		if ( !f00f_workaround_enabled ) {
 			trap_init_f00f_bug();

arch/i386/kernel/signal.c

@@ -630,8 +630,8 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
 				info.si_signo = signr;
 				info.si_errno = 0;
 				info.si_code = SI_USER;
-				info.si_pid = current->p_pptr->pid;
-				info.si_uid = current->p_pptr->uid;
+				info.si_pid = current->parent->pid;
+				info.si_uid = current->parent->uid;
 			}
 
 			/* If the (new) signal is now blocked, requeue it.  */
@@ -670,7 +670,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
 			case SIGSTOP: {
 				struct signal_struct *sig;
 				current->exit_code = signr;
-				sig = current->p_pptr->sig;
+				sig = current->parent->sig;
 				preempt_disable();
 				current->state = TASK_STOPPED;
 				if (sig && !(sig->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP))

arch/i386/kernel/smpboot.c

@@ -828,7 +828,7 @@ static void __init do_boot_cpu (int apicid)
 	 * We remove it from the pidhash and the runqueue
 	 * once we got the process:
 	 */
-	idle = init_task.prev_task;
+	idle = prev_task(&init_task);
 	if (!idle)
 		panic("No idle process for CPU %d", cpu);
 

arch/i386/kernel/traps.c

@@ -775,35 +775,17 @@ asmlinkage void math_emulate(long arg)
 
 #endif /* CONFIG_MATH_EMULATION */
 
-#ifndef CONFIG_M686
+#ifdef CONFIG_X86_F00F_BUG
 void __init trap_init_f00f_bug(void)
 {
-	unsigned long page;
-	pgd_t * pgd;
-	pmd_t * pmd;
-	pte_t * pte;
-
-	/*
-	 * Allocate a new page in virtual address space, 
-	 * move the IDT into it and write protect this page.
-	 */
-	page = (unsigned long) vmalloc(PAGE_SIZE);
-	pgd = pgd_offset(&init_mm, page);
-	pmd = pmd_offset(pgd, page);
-	pte = pte_offset_kernel(pmd, page);
-	__free_page(pte_page(*pte));
-	*pte = mk_pte_phys(__pa(&idt_table), PAGE_KERNEL_RO);
-	/*
-	 * Not that any PGE-capable kernel should have the f00f bug ...
-	 */
-	__flush_tlb_all();
+	__set_fixmap(FIX_F00F_IDT, __pa(&idt_table), PAGE_KERNEL_RO);
 
 	/*
 	 * "idt" is magic - it overlaps the idt_descr
 	 * variable so that updating idt will automatically
 	 * update the idt descriptor..
 	 */
-	idt = (struct desc_struct *)page;
+	idt = (struct desc_struct *) fix_to_virt(FIX_F00F_IDT);
 	__asm__ __volatile__("lidt %0": "=m" (idt_descr));
 }
 #endif

arch/i386/mm/fault.c

@@ -282,6 +282,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code)
 		return;
 	}
 
+#ifdef CONFIG_X86_F00F_BUG
 	/*
 	 * Pentium F0 0F C7 C8 bug workaround.
 	 */
@@ -295,6 +296,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code)
 			return;
 		}
 	}
+#endif
 
 no_context:
 	/* Are we prepared to handle this kernel fault?  */

arch/ia64/config.in

-mainmenu_name "Kernel configuration of Linux for IA-64 machines"
+mainmenu_name "IA-64 Linux Kernel Configuration"
 
 source init/Config.in
 
 mainmenu_option next_comment
-comment 'General setup'
+comment 'Processor type and features'
 
 define_bool CONFIG_IA64 y
 
@@ -14,13 +14,6 @@ define_bool CONFIG_SBUS n
 define_bool CONFIG_RWSEM_GENERIC_SPINLOCK y
 define_bool CONFIG_RWSEM_XCHGADD_ALGORITHM n
 
-if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
-  define_bool CONFIG_ACPI y
-  define_bool CONFIG_ACPI_EFI y
-  define_bool CONFIG_ACPI_INTERPRETER y
-  define_bool CONFIG_ACPI_KERNEL_CONFIG y
-fi
-
 choice 'IA-64 processor type' \
 	"Itanium			CONFIG_ITANIUM \
 	 McKinley			CONFIG_MCKINLEY" Itanium
@@ -38,6 +31,13 @@ choice 'Kernel page size'						\
 	 16KB			CONFIG_IA64_PAGE_SIZE_16KB		\
 	 64KB			CONFIG_IA64_PAGE_SIZE_64KB" 16KB
 
+if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
+  define_bool CONFIG_ACPI y
+  define_bool CONFIG_ACPI_EFI y
+  define_bool CONFIG_ACPI_INTERPRETER y
+  define_bool CONFIG_ACPI_KERNEL_CONFIG y
+fi
+
 if [ "$CONFIG_ITANIUM" = "y" ]; then
 	define_bool CONFIG_IA64_BRL_EMU y
 	bool '  Enable Itanium B-step specific code' CONFIG_ITANIUM_BSTEP_SPECIFIC
@@ -136,6 +136,17 @@ else
 fi
 endmenu
 
+else # ! HP_SIM
+mainmenu_option next_comment
+comment 'Block devices'
+tristate 'Loopback device support' CONFIG_BLK_DEV_LOOP
+dep_tristate 'Network block device support' CONFIG_BLK_DEV_NBD $CONFIG_NET
+
+tristate 'RAM disk support' CONFIG_BLK_DEV_RAM
+if [ "$CONFIG_BLK_DEV_RAM" = "y" -o "$CONFIG_BLK_DEV_RAM" = "m" ]; then
+   int '  Default RAM disk size' CONFIG_BLK_DEV_RAM_SIZE 4096
+fi
+endmenu
 fi # !HP_SIM
 
 mainmenu_option next_comment
@@ -228,15 +239,7 @@ fi
 fi # !HP_SIM
 
 if [ "$CONFIG_IA64_HP_SIM" != "n" -o "$CONFIG_IA64_GENERIC" != "n" ]; then
-  mainmenu_option next_comment
-  comment 'Simulated drivers'
-
-  bool 'Simulated Ethernet ' CONFIG_SIMETH
-  bool 'Simulated serial driver support' CONFIG_SIM_SERIAL
-  if [ "$CONFIG_SCSI" != "n" ]; then
-    bool 'Simulated SCSI disk' CONFIG_SCSI_SIM
-  fi
-  endmenu
+  source arch/ia64/hp/Config.in
 fi
 
 
@@ -258,15 +261,6 @@ if [ "$CONFIG_DEBUG_KERNEL" != "n" ]; then
    bool '  Spinlock debugging' CONFIG_DEBUG_SPINLOCK
    bool '  Turn on compare-and-exchange bug checking (slow!)' CONFIG_IA64_DEBUG_CMPXCHG
    bool '  Turn on irq debug checks (slow!)' CONFIG_IA64_DEBUG_IRQ
-   bool '  Built-in Kernel Debugger support' CONFIG_KDB
-   dep_tristate '    KDB modules' CONFIG_KDB_MODULES $CONFIG_KDB
-   if [ "$CONFIG_KDB" = "y" ]; then
-      bool '    KDB off by default' CONFIG_KDB_OFF
-      comment '  Load all symbols for debugging is required for KDB'
-      define_bool CONFIG_KALLSYMS y
-   else
-      bool '  Load all symbols for debugging' CONFIG_KALLSYMS
-   fi
 fi
 
 endmenu

arch/ia64/hp/Makefile

 #
 # ia64/platform/hp/Makefile
 #
+# Copyright (C) 2002 Hewlett-Packard Co.
+#	David Mosberger-Tang <davidm@hpl.hp.com>
 # Copyright (C) 1999 Silicon Graphics, Inc.
 # Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
 #
@@ -12,6 +14,10 @@ O_TARGET := hp.a
 obj-y := hpsim_console.o hpsim_irq.o hpsim_setup.o
 obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
 
+obj-$(CONFIG_SIMETH)	+= simeth.o
+obj-$(CONFIG_SIM_SERIAL) += simserial.o
+obj-$(CONFIG_SCSI_SIM)	+= simscsi.o
+
 clean::
 
 include $(TOPDIR)/Rules.make

arch/ia64/hp/simscsi.c

+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999, 2001-2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ *
+ * 02/01/15 David Mosberger	Updated for v2.5.1
+ * 99/12/18 David Mosberger	Added support for READ10/WRITE10 needed by linux v2.3.33
+ */
+#include <linux/config.h>
+#include <linux/blk.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/timer.h>
+
+#include <scsi/scsi.h>
+
+#include <asm/irq.h>
+
+#include "../drivers/scsi/scsi.h"
+#include "../drivers/scsi/sd.h"
+#include "../drivers/scsi/hosts.h"
+#include "simscsi.h"
+
+#define DEBUG_SIMSCSI	1
+
+/* Simulator system calls: */
+
+#define SSC_OPEN			50
+#define SSC_CLOSE			51
+#define SSC_READ			52
+#define SSC_WRITE			53
+#define SSC_GET_COMPLETION		54
+#define SSC_WAIT_COMPLETION		55
+
+#define SSC_WRITE_ACCESS		2
+#define SSC_READ_ACCESS			1
+
+#if DEBUG_SIMSCSI
+  int simscsi_debug;
+# define DBG	simscsi_debug
+#else
+# define DBG	0
+#endif
+
+static struct Scsi_Host *host;
+
+static void simscsi_interrupt (unsigned long val);
+DECLARE_TASKLET(simscsi_tasklet, simscsi_interrupt, 0);
+
+struct disk_req {
+	unsigned long addr;
+	unsigned len;
+};
+
+struct disk_stat {
+	int fd;
+	unsigned count;
+};
+
+extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
+
+static int desc[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
+
+static struct queue_entry {
+	Scsi_Cmnd *sc;
+} queue[SIMSCSI_REQ_QUEUE_LEN];
+
+static int rd, wr;
+static atomic_t num_reqs = ATOMIC_INIT(0);
+
+/* base name for default disks */
+static char *simscsi_root = DEFAULT_SIMSCSI_ROOT;
+
+#define MAX_ROOT_LEN	128
+
+/*
+ * used to setup a new base for disk images
+ * to use /foo/bar/disk[a-z] as disk images
+ * you have to specify simscsi=/foo/bar/disk on the command line
+ */
+static int __init
+simscsi_setup (char *s)
+{
+	/* XXX Fix me we may need to strcpy() ? */
+	if (strlen(s) > MAX_ROOT_LEN) {
+		printk("simscsi_setup: prefix too long---using default %s\n", simscsi_root);
+	}
+	simscsi_root = s;
+	return 1;
+}
+
+__setup("simscsi=", simscsi_setup);
+
+static void
+simscsi_interrupt (unsigned long val)
+{
+	Scsi_Cmnd *sc;
+
+	while ((sc = queue[rd].sc) != 0) {
+		atomic_dec(&num_reqs);
+		queue[rd].sc = 0;
+		if (DBG)
+			printk("simscsi_interrupt: done with %ld\n", sc->serial_number);
+		(*sc->scsi_done)(sc);
+		rd = (rd + 1) % SIMSCSI_REQ_QUEUE_LEN;
+	}
+}
+
+int
+simscsi_detect (Scsi_Host_Template *templ)
+{
+	templ->proc_name = "simscsi";
+	host = scsi_register(templ, 0);
+	return 1;	/* fake one SCSI host adapter */
+}
+
+int
+simscsi_release (struct Scsi_Host *host)
+{
+	return 0;	/* this is easy...  */
+}
+
+const char *
+simscsi_info (struct Scsi_Host *host)
+{
+	return "simulated SCSI host adapter";
+}
+
+int
+simscsi_abort (Scsi_Cmnd *cmd)
+{
+	printk ("simscsi_abort: unimplemented\n");
+	return SCSI_ABORT_SUCCESS;
+}
+
+int
+simscsi_reset (Scsi_Cmnd *cmd, unsigned int reset_flags)
+{
+	printk ("simscsi_reset: unimplemented\n");
+	return SCSI_RESET_SUCCESS;
+}
+
+int
+simscsi_biosparam (Disk *disk, kdev_t n, int ip[])
+{
+	int size = disk->capacity;
+
+	ip[0] = 64;
+	ip[1] = 32;
+	ip[2] = size >> 11;
+	return 0;
+}
+
+static void
+simscsi_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset, unsigned long len)
+{
+	struct disk_stat stat;
+	struct disk_req req;
+
+	req.addr = __pa(sc->request_buffer);
+	req.len  = len;			/* # of bytes to transfer */
+
+	if (sc->request_bufflen < req.len)
+		return;
+
+	stat.fd = desc[sc->target];
+	if (DBG)
+		printk("simscsi_%s @ %lx (off %lx)\n",
+		       mode == SSC_READ ? "read":"write", req.addr, offset);
+	ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
+	ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+
+	if (stat.count == req.len) {
+		sc->result = GOOD;
+	} else {
+		sc->result = DID_ERROR << 16;
+	}
+}
+
+static void
+simscsi_sg_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset)
+{
+	int list_len = sc->use_sg;
+	struct scatterlist *sl = (struct scatterlist *)sc->buffer;
+	struct disk_stat stat;
+	struct disk_req req;
+
+	stat.fd = desc[sc->target];
+
+	while (list_len) {
+		req.addr = __pa(page_address(sl->page) + sl->offset);
+		req.len  = sl->length;
+		if (DBG)
+			printk("simscsi_sg_%s @ %lx (off %lx) use_sg=%d len=%d\n",
+			       mode == SSC_READ ? "read":"write", req.addr, offset,
+			       list_len, sl->length);
+		ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
+		ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+
+		/* should not happen in our case */
+		if (stat.count != req.len) {
+			sc->result = DID_ERROR << 16;
+			return;
+		}
+		offset +=  sl->length;
+		sl++;
+		list_len--;
+	}
+	sc->result = GOOD;
+}
+
+/*
+ * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
+ * commands.
+ * Added 02/26/99 S.Eranian
+ */
+static void
+simscsi_readwrite6 (Scsi_Cmnd *sc, int mode)
+{
+	unsigned long offset;
+
+	offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;
+	if (sc->use_sg > 0)
+		simscsi_sg_readwrite(sc, mode, offset);
+	else
+		simscsi_readwrite(sc, mode, offset, sc->cmnd[4]*512);
+}
+
+
+static void
+simscsi_readwrite10 (Scsi_Cmnd *sc, int mode)
+{
+	unsigned long offset;
+
+	offset = (  (sc->cmnd[2] << 24) | (sc->cmnd[3] << 16)
+		  | (sc->cmnd[4] <<  8) | (sc->cmnd[5] <<  0))*512;
+	if (sc->use_sg > 0)
+		simscsi_sg_readwrite(sc, mode, offset);
+	else
+		simscsi_readwrite(sc, mode, offset, ((sc->cmnd[7] << 8) | sc->cmnd[8])*512);
+}
+
+int
+simscsi_queuecommand (Scsi_Cmnd *sc, void (*done)(Scsi_Cmnd *))
+{
+	char fname[MAX_ROOT_LEN+16];
+	char *buf;
+#if DEBUG_SIMSCSI
+	register long sp asm ("sp");
+
+	if (DBG)
+		printk("simscsi_queuecommand: target=%d,cmnd=%u,sc=%lu,sp=%lx,done=%p\n",
+		       sc->target, sc->cmnd[0], sc->serial_number, sp, done);
+#endif
+
+	sc->result = DID_BAD_TARGET << 16;
+	sc->scsi_done = done;
+	if (sc->target <= 7 && sc->lun == 0) {
+		switch (sc->cmnd[0]) {
+		      case INQUIRY:
+			if (sc->request_bufflen < 35) {
+				break;
+			}
+			sprintf (fname, "%s%c", simscsi_root, 'a' + sc->target);
+			desc[sc->target] = ia64_ssc (__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
+						     0, 0, SSC_OPEN);
+			if (desc[sc->target] < 0) {
+				/* disk doesn't exist... */
+				break;
+			}
+			buf = sc->request_buffer;
+			buf[0] = 0;	/* magnetic disk */
+			buf[1] = 0;	/* not a removable medium */
+			buf[2] = 2;	/* SCSI-2 compliant device */
+			buf[3] = 2;	/* SCSI-2 response data format */
+			buf[4] = 31;	/* additional length (bytes) */
+			buf[5] = 0;	/* reserved */
+			buf[6] = 0;	/* reserved */
+			buf[7] = 0;	/* various flags */
+			memcpy(buf + 8, "HP      SIMULATED DISK  0.00",  28);
+			sc->result = GOOD;
+			break;
+
+		      case TEST_UNIT_READY:
+			sc->result = GOOD;
+			break;
+
+		      case READ_6:
+			if (desc[sc->target] < 0 )
+				break;
+			simscsi_readwrite6(sc, SSC_READ);
+			break;
+
+		      case READ_10:
+			if (desc[sc->target] < 0 )
+				break;
+			simscsi_readwrite10(sc, SSC_READ);
+			break;
+
+		      case WRITE_6:
+			if (desc[sc->target] < 0)
+				break;
+			simscsi_readwrite6(sc, SSC_WRITE);
+			break;
+
+		      case WRITE_10:
+			if (desc[sc->target] < 0)
+				break;
+			simscsi_readwrite10(sc, SSC_WRITE);
+			break;
+
+
+		      case READ_CAPACITY:
+			if (desc[sc->target] < 0 || sc->request_bufflen < 8) {
+				break;
+			}
+			buf = sc->request_buffer;
+
+			/* pretend to be a 1GB disk (partition table contains real stuff): */
+			buf[0] = 0x00;
+			buf[1] = 0x1f;
+			buf[2] = 0xff;
+			buf[3] = 0xff;
+			/* set block size of 512 bytes: */
+			buf[4] = 0;
+			buf[5] = 0;
+			buf[6] = 2;
+			buf[7] = 0;
+			sc->result = GOOD;
+			break;
+
+		      case MODE_SENSE:
+			printk("MODE_SENSE\n");
+			break;
+
+		      case START_STOP:
+			printk("START_STOP\n");
+			break;
+
+		      default:
+			panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);
+		}
+	}
+	if (sc->result == DID_BAD_TARGET) {
+		sc->result |= DRIVER_SENSE << 24;
+		sc->sense_buffer[0] = 0x70;
+		sc->sense_buffer[2] = 0x00;
+	}
+	if (atomic_read(&num_reqs) >= SIMSCSI_REQ_QUEUE_LEN) {
+		panic("Attempt to queue command while command is pending!!");
+	}
+	atomic_inc(&num_reqs);
+	queue[wr].sc = sc;
+	wr = (wr + 1) % SIMSCSI_REQ_QUEUE_LEN;
+
+	tasklet_schedule(&simscsi_tasklet);
+	return 0;
+}
+
+
+static Scsi_Host_Template driver_template = SIMSCSI;
+
+#define __initcall(fn)	late_initcall(fn)
+
+#include "../drivers/scsi/scsi_module.c"

arch/ia64/hp/simscsi.h

+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#ifndef SIMSCSI_H
+#define SIMSCSI_H
+
+#define SIMSCSI_REQ_QUEUE_LEN	64
+
+#define DEFAULT_SIMSCSI_ROOT	"/var/ski-disks/sd"
+
+extern int simscsi_detect (Scsi_Host_Template *);
+extern int simscsi_release (struct Scsi_Host *);
+extern const char *simscsi_info (struct Scsi_Host *);
+extern int simscsi_queuecommand (Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+extern int simscsi_abort (Scsi_Cmnd *);
+extern int simscsi_reset (Scsi_Cmnd *, unsigned int);
+extern int simscsi_biosparam (Disk *, kdev_t, int[]);
+
+#define SIMSCSI {					\
+	detect:			simscsi_detect,		\
+	release:		simscsi_release,	\
+	info:			simscsi_info,		\
+	queuecommand:		simscsi_queuecommand,	\
+	abort:			simscsi_abort,		\
+	reset:			simscsi_reset,		\
+	bios_param:		simscsi_biosparam,	\
+	can_queue:		SIMSCSI_REQ_QUEUE_LEN,	\
+	this_id:		-1,			\
+	sg_tablesize:		SG_ALL,			\
+	cmd_per_lun:		SIMSCSI_REQ_QUEUE_LEN,	\
+	present:		0,			\
+	unchecked_isa_dma:	0,			\
+	use_clustering:		DISABLE_CLUSTERING	\
+}
+
+#endif /* SIMSCSI_H */

arch/ia64/ia32/ia32_entry.S

 #include <asm/asmmacro.h>
 #include <asm/offsets.h>
 #include <asm/signal.h>
+#include <asm/thread_info.h>
 
 #include "../kernel/minstate.h"
 
@@ -87,18 +88,21 @@ END(sys32_sigsuspend)
 
 GLOBAL_ENTRY(ia32_ret_from_clone)
 	PT_REGS_UNWIND_INFO(0)
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 	/*
 	 * We need to call schedule_tail() to complete the scheduling process.
 	 * Called by ia64_switch_to after do_fork()->copy_thread().  r8 contains the
 	 * address of the previously executing task.
 	 */
 	br.call.sptk.many rp=ia64_invoke_schedule_tail
-.ret1:	adds r2=IA64_TASK_PTRACE_OFFSET,r13
+.ret1:
+#endif
+	adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
-	ld8 r2=[r2]
+	ld4 r2=[r2]
 	;;
 	mov r8=0
-	tbit.nz p6,p0=r2,PT_SYSCALLTRACE_BIT
+	tbit.nz p6,p0=r2,TIF_SYSCALL_TRACE
 (p6)	br.cond.spnt .ia32_strace_check_retval
 	;;					// prevent RAW on r8
 END(ia32_ret_from_clone)

arch/ia64/ia32/ia32_traps.c

@@ -20,7 +20,7 @@ ia32_intercept (struct pt_regs *regs, unsigned long isr)
 {
 	switch ((isr >> 16) & 0xff) {
 	      case 0:	/* Instruction intercept fault */
-	      case 3:	/* Locked Data reference fault */
+	      case 4:	/* Locked Data reference fault */
 	      case 1:	/* Gate intercept trap */
 		return -1;
 

arch/ia64/kernel/entry.S

@@ -486,6 +486,7 @@ END(ia64_trace_syscall)
 
 GLOBAL_ENTRY(ia64_ret_from_clone)
 	PT_REGS_UNWIND_INFO(0)
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 	/*
 	 * We need to call schedule_tail() to complete the scheduling process.
 	 * Called by ia64_switch_to after do_fork()->copy_thread().  r8 contains the
@@ -493,6 +494,7 @@ GLOBAL_ENTRY(ia64_ret_from_clone)
 	 */
 	br.call.sptk.many rp=ia64_invoke_schedule_tail
 .ret8:
+#endif
 	adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
 	;;
 	ld4 r2=[r2]
@@ -620,7 +622,7 @@ GLOBAL_ENTRY(ia64_leave_kernel)
 	shr.u r18=r19,16	// get byte size of existing "dirty" partition
 	;;
 	mov r16=ar.bsp		// get existing backing store pointer
-	movl r17=PERCPU_ADDR+IA64_CPU_PHYS_STACKED_SIZE_P8_OFFSET
+	movl r17=THIS_CPU(ia64_phys_stacked_size_p8)
 	;;
 	ld4 r17=[r17]		// r17 = cpu_data->phys_stacked_size_p8
 (pKern)	br.cond.dpnt skip_rbs_switch
@@ -756,6 +758,7 @@ ENTRY(handle_syscall_error)
 	br.cond.sptk ia64_leave_kernel
 END(handle_syscall_error)
 
+#ifdef CONFIG_SMP
 	/*
 	 * Invoke schedule_tail(task) while preserving in0-in7, which may be needed
 	 * in case a system call gets restarted.
@@ -772,6 +775,8 @@ GLOBAL_ENTRY(ia64_invoke_schedule_tail)
 	br.ret.sptk.many rp
 END(ia64_invoke_schedule_tail)
 
+#endif /* CONFIG_SMP */
+
 #if __GNUC__ < 3
 
 	/*

arch/ia64/kernel/ia64_ksyms.c

@@ -59,7 +59,7 @@ EXPORT_SYMBOL(clear_page);
 
 #include <asm/processor.h>
 # ifndef CONFIG_NUMA
-EXPORT_SYMBOL(_cpu_data);
+EXPORT_SYMBOL(cpu_info);
 # endif
 EXPORT_SYMBOL(kernel_thread);
 

arch/ia64/kernel/ivt.S

@@ -645,7 +645,6 @@ ENTRY(break_fault)
 
 	mov r3=255
 	adds r15=-1024,r15			// r15 contains the syscall number---subtract 1024
-	adds r2=IA64_TASK_PTRACE_OFFSET,r13	// r2 = &current->ptrace
 	;;
 	cmp.geu p6,p7=r3,r15		// (syscall > 0 && syscall <= 1024+255) ?
 	movl r16=sys_call_table

arch/ia64/kernel/process.c

@@ -193,7 +193,10 @@ ia64_save_extra (struct task_struct *task)
 	if ((task->thread.flags & IA64_THREAD_PM_VALID) != 0)
 		pfm_save_regs(task);
 
-	if (local_cpu_data->pfm_syst_wide) pfm_syst_wide_update_task(task, 0);
+# ifdef CONFIG_SMP
+	if (local_cpu_data->pfm_syst_wide)
+		pfm_syst_wide_update_task(task, 0);
+# endif
 #endif
 
 	if (IS_IA32_PROCESS(ia64_task_regs(task)))
@@ -210,7 +213,9 @@ ia64_load_extra (struct task_struct *task)
 	if ((task->thread.flags & IA64_THREAD_PM_VALID) != 0)
 		pfm_load_regs(task);
 
+# ifdef CONFIG_SMP
 	if (local_cpu_data->pfm_syst_wide) pfm_syst_wide_update_task(task, 1);
+# endif
 #endif
 
 	if (IS_IA32_PROCESS(ia64_task_regs(task)))

arch/ia64/kernel/setup.c

@@ -54,12 +54,10 @@
 
 extern char _end;
 
-#ifdef CONFIG_NUMA
- struct cpuinfo_ia64 *boot_cpu_data;
-#else
- struct cpuinfo_ia64 _cpu_data[NR_CPUS] __attribute__ ((section ("__special_page_section")));
-#endif
+unsigned long __per_cpu_offset[NR_CPUS];
+struct cpuinfo_ia64 cpu_info __per_cpu_data;
 
+unsigned long ia64_phys_stacked_size_p8;
 unsigned long ia64_cycles_per_usec;
 struct ia64_boot_param *ia64_boot_param;
 struct screen_info screen_info;
@@ -511,6 +509,12 @@ identify_cpu (struct cpuinfo_ia64 *c)
 	c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1));
 }
 
+void
+setup_per_cpu_areas (void)
+{
+	/* start_kernel() requires this... */
+}
+
 /*
  * cpu_init() initializes state that is per-CPU.  This function acts
  * as a 'CPU state barrier', nothing should get across.
@@ -518,46 +522,21 @@ identify_cpu (struct cpuinfo_ia64 *c)
 void
 cpu_init (void)
 {
+	extern char __per_cpu_start[], __phys_per_cpu_start[], __per_cpu_end[];
 	extern void __init ia64_mmu_init (void *);
 	unsigned long num_phys_stacked;
 	pal_vm_info_2_u_t vmi;
 	unsigned int max_ctx;
-	struct cpuinfo_ia64 *my_cpu_data;
-#ifdef CONFIG_NUMA
-	int cpu, order;
+	struct cpuinfo_ia64 *my_cpu_info;
+	void *my_cpu_data;
+	int cpu = smp_processor_id();
 
-	/*
-	 * If NUMA is configured, the cpu_data array is not preallocated. The boot cpu
-	 * allocates entries for every possible cpu. As the remaining cpus come online,
-	 * they reallocate a new cpu_data structure on their local node. This extra work
-	 * is required because some boot code references all cpu_data structures
-	 * before the cpus are actually started.
-	 */
-	if (!boot_cpu_data) {
-		my_cpu_data = alloc_bootmem_pages_node(NODE_DATA(numa_node_id()),
-						       sizeof(struct cpuinfo_ia64));
-		boot_cpu_data = my_cpu_data;
-		my_cpu_data->cpu_data[0] = my_cpu_data;
-		for (cpu = 1; cpu < NR_CPUS; ++cpu)
-			my_cpu_data->cpu_data[cpu]
-				= alloc_bootmem_pages_node(NODE_DATA(numa_node_id()),
-							   sizeof(struct cpuinfo_ia64));
-		for (cpu = 1; cpu < NR_CPUS; ++cpu)
-			memcpy(my_cpu_data->cpu_data[cpu]->cpu_data,
-			       my_cpu_data->cpu_data, sizeof(my_cpu_data->cpu_data));
-	} else {
-		order = get_order(sizeof(struct cpuinfo_ia64));
-		my_cpu_data = page_address(alloc_pages_node(numa_node_id(), GFP_KERNEL, order));
-		memcpy(my_cpu_data, boot_cpu_data->cpu_data[smp_processor_id()],
-		       sizeof(struct cpuinfo_ia64));
-		__free_pages(virt_to_page(boot_cpu_data->cpu_data[smp_processor_id()]),
-			     order);
-		for (cpu = 0; cpu < NR_CPUS; ++cpu)
-			boot_cpu_data->cpu_data[cpu]->cpu_data[smp_processor_id()] = my_cpu_data;
-	}
-#else
-	my_cpu_data = cpu_data(smp_processor_id());
-#endif
+	my_cpu_data = alloc_bootmem_pages(__per_cpu_end - __per_cpu_start);
+	memcpy(my_cpu_data, __phys_per_cpu_start, __per_cpu_end - __per_cpu_start);
+
+	__per_cpu_offset[cpu] = (char *) my_cpu_data - __per_cpu_start;
+
+	my_cpu_info = my_cpu_data + ((char *) &cpu_info - __per_cpu_start);
 
 	/*
 	 * We can't pass "local_cpu_data" to identify_cpu() because we haven't called
@@ -565,7 +544,7 @@ cpu_init (void)
 	 * depends on the data returned by identify_cpu().  We break the dependency by
 	 * accessing cpu_data() the old way, through identity mapped space.
 	 */
-	identify_cpu(my_cpu_data);
+	identify_cpu(my_cpu_info);
 
 	/* Clear the stack memory reserved for pt_regs: */
 	memset(ia64_task_regs(current), 0, sizeof(struct pt_regs));
@@ -626,7 +605,7 @@ cpu_init (void)
 		printk ("cpu_init: PAL RSE info failed, assuming 96 physical stacked regs\n");
 		num_phys_stacked = 96;
 	}
-	local_cpu_data->phys_stacked_size_p8 = num_phys_stacked*8 + 8;
-
+	/* size of physical stacked register partition plus 8 bytes: */
+	ia64_phys_stacked_size_p8 = num_phys_stacked*8 + 8;
 	platform_cpu_init();
 }

arch/ia64/kernel/smp.c

@@ -75,12 +75,11 @@ struct call_data_struct {
 
 static volatile struct call_data_struct *call_data;
 
-static spinlock_t migration_lock = SPIN_LOCK_UNLOCKED;
-static task_t *migrating_task;
-
 #define IPI_CALL_FUNC		0
 #define IPI_CPU_STOP		1
-#define IPI_MIGRATE_TASK	2
+
+/* This needs to be cacheline aligned because it is written to by *other* CPUs.  */
+static __u64 ipi_operation __per_cpu_data ____cacheline_aligned;
 
 static void
 stop_this_cpu (void)
@@ -99,7 +98,7 @@ void
 handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
 {
 	int this_cpu = smp_processor_id();
-	unsigned long *pending_ipis = &local_cpu_data->ipi_operation;
+	unsigned long *pending_ipis = &this_cpu(ipi_operation);
 	unsigned long ops;
 
 	/* Count this now; we may make a call that never returns. */
@@ -143,14 +142,6 @@ handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
 			      }
 			      break;
 
-			      case IPI_MIGRATE_TASK:
-			      {
-				      task_t *p = migrating_task;
-				      spin_unlock(&migration_lock);
-				      sched_task_migrated(p);
-			      }
-			      break;
-
 			      case IPI_CPU_STOP:
 				stop_this_cpu();
 				break;
@@ -167,7 +158,7 @@ handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
 static inline void
 send_IPI_single (int dest_cpu, int op)
 {
-	set_bit(op, &cpu_data(dest_cpu)->ipi_operation);
+	set_bit(op, &per_cpu(ipi_operation, dest_cpu));
 	platform_send_ipi(dest_cpu, IA64_IPI_VECTOR, IA64_IPI_DM_INT, 0);
 }
 
@@ -350,15 +341,6 @@ smp_send_stop (void)
 	smp_num_cpus = 1;
 }
 
-void
-smp_migrate_task (int cpu, task_t *p)
-{
-	/* The target CPU will unlock the migration spinlock: */
-	spin_lock(&migration_lock);
-	migrating_task = p;
-	send_IPI_single(cpu, IPI_MIGRATE_TASK);
-}
-
 int __init
 setup_profiling_timer (unsigned int multiplier)
 {

arch/ia64/kernel/smpboot.c

@@ -413,7 +413,7 @@ do_boot_cpu (int sapicid)
 	 * We remove it from the pidhash and the runqueue
 	 * once we got the process:
 	 */
-	idle = init_task.prev_task;
+	idle = prev_task(&init_task);
 	if (!idle)
 		panic("No idle process for CPU %d", cpu);
 

arch/ia64/kernel/unaligned.c

@@ -1305,11 +1305,7 @@ ia64_handle_unaligned (unsigned long ifa, struct pt_regs *regs)
 	 * handler into reading an arbitrary kernel addresses...
 	 */
 	if (!user_mode(regs)) {
-#ifdef GAS_HAS_LOCAL_TAGS
-		fix = search_exception_table(regs->cr_iip + ia64_psr(regs)->ri);
-#else
-		fix = search_exception_table(regs->cr_iip);
-#endif
+		fix = SEARCH_EXCEPTION_TABLE(regs);
 	}
 	if (user_mode(regs) || fix.cont) {
 		if ((current->thread.flags & IA64_THREAD_UAC_SIGBUS) != 0)

arch/ia64/lib/clear_page.S

@@ -18,7 +18,7 @@
 # define PREFETCH_LINES	9	// magic number
 #else
 # define L3_LINE_SIZE	128	// McKinley L3 line size
-# define PREFETCH_LINES	7	// magic number
+# define PREFETCH_LINES	12	// magic number
 #endif
 
 #define saved_lc	r2

arch/ia64/mm/fault.c

@@ -49,7 +49,6 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 	int signal = SIGSEGV, code = SEGV_MAPERR;
 	struct vm_area_struct *vma, *prev_vma;
 	struct mm_struct *mm = current->mm;
-	struct exception_fixup fix;
 	struct siginfo si;
 	unsigned long mask;
 
@@ -167,15 +166,8 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 		return;
 	}
 
-#ifdef GAS_HAS_LOCAL_TAGS
-	fix = search_exception_table(regs->cr_iip + ia64_psr(regs)->ri);
-#else
-	fix = search_exception_table(regs->cr_iip);
-#endif
-	if (fix.cont) {
-		handle_exception(regs, fix);
+	if (done_with_exception(regs))
 		return;
-	}
 
 	/*
 	 * Oops. The kernel tried to access some bad page. We'll have to terminate things

arch/ia64/mm/init.c

@@ -103,12 +103,12 @@ free_initmem (void)
 		free_page(addr);
 		++totalram_pages;
 	}
-	printk ("Freeing unused kernel memory: %ldkB freed\n",
-		(&__init_end - &__init_begin) >> 10);
+	printk(KERN_INFO "Freeing unused kernel memory: %ldkB freed\n",
+	       (&__init_end - &__init_begin) >> 10);
 }
 
 void
-free_initrd_mem(unsigned long start, unsigned long end)
+free_initrd_mem (unsigned long start, unsigned long end)
 {
 	/*
 	 * EFI uses 4KB pages while the kernel can use 4KB  or bigger.
@@ -145,7 +145,7 @@ free_initrd_mem(unsigned long start, unsigned long end)
 	end = end & PAGE_MASK;
 
 	if (start < end)
-		printk ("Freeing initrd memory: %ldkB freed\n", (end - start) >> 10);
+		printk(KERN_INFO "Freeing initrd memory: %ldkB freed\n", (end - start) >> 10);
 
 	for (; start < end; start += PAGE_SIZE) {
 		if (!VALID_PAGE(virt_to_page(start)))

arch/ia64/tools/print_offsets.awk

@@ -7,12 +7,6 @@ BEGIN {
 	print " * This file was generated by arch/ia64/tools/print_offsets.awk."
 	print " *"
 	print " */"
-	#
-	# This is a cheesy hack.  Make sure that
-	# PT_PTRACED == 1<<PT_PTRACED_BIT.
-	#
-	print "#define PT_PTRACED_BIT		0"
-	print "#define PT_SYSCALLTRACE_BIT	1"
 }
 
 # look for .tab:

arch/ia64/tools/print_offsets.c

@@ -52,14 +52,7 @@ tab[] =
     { "SIGFRAME_SIZE",			sizeof (struct sigframe) },
     { "UNW_FRAME_INFO_SIZE",		sizeof (struct unw_frame_info) },
     { "", 0 },			/* spacer */
-    { "IA64_TASK_PTRACE_OFFSET",	offsetof (struct task_struct, ptrace) },
-    { "IA64_TASK_THREAD_OFFSET",	offsetof (struct task_struct, thread) },
     { "IA64_TASK_THREAD_KSP_OFFSET",	offsetof (struct task_struct, thread.ksp) },
-#ifdef CONFIG_PERFMON
-    { "IA64_TASK_PFM_OVFL_BLOCK_RESET_OFFSET",offsetof(struct task_struct, thread.pfm_ovfl_block_reset) },
-#endif
-    { "IA64_TASK_PID_OFFSET",		offsetof (struct task_struct, pid) },
-    { "IA64_TASK_MM_OFFSET",		offsetof (struct task_struct, mm) },
     { "IA64_PT_REGS_CR_IPSR_OFFSET",	offsetof (struct pt_regs, cr_ipsr) },
     { "IA64_PT_REGS_CR_IIP_OFFSET",	offsetof (struct pt_regs, cr_iip) },
     { "IA64_PT_REGS_CR_IFS_OFFSET",	offsetof (struct pt_regs, cr_ifs) },
@@ -169,9 +162,6 @@ tab[] =
     { "IA64_SIGFRAME_SIGCONTEXT_OFFSET",	offsetof (struct sigframe, sc) },
     { "IA64_CLONE_VFORK",		CLONE_VFORK },
     { "IA64_CLONE_VM",			CLONE_VM },
-    { "IA64_CPU_IRQ_COUNT_OFFSET",	offsetof (struct cpuinfo_ia64, irq_stat.f.irq_count) },
-    { "IA64_CPU_BH_COUNT_OFFSET",	offsetof (struct cpuinfo_ia64, irq_stat.f.bh_count) },
-    { "IA64_CPU_PHYS_STACKED_SIZE_P8_OFFSET",offsetof (struct cpuinfo_ia64, phys_stacked_size_p8)},
 };
 
 static const char *tabs = "\t\t\t\t\t\t\t\t\t\t";
@@ -189,16 +179,6 @@ main (int argc, char **argv)
   printf ("/*\n * DO NOT MODIFY\n *\n * This file was generated by "
 	  "arch/ia64/tools/print_offsets.\n *\n */\n\n");
 
-  /* This is stretching things a bit, but entry.S needs the bit number
-     for PT_PTRACED and it can't include <linux/sched.h> so this seems
-     like a reasonably solution.  At least the code won't break in
-     subtle ways should PT_PTRACED ever change.  Ditto for
-     PT_TRACESYS_BIT. */
-  printf ("#define PT_PTRACED_BIT\t\t\t%u\n", ffs (PT_PTRACED) - 1);
-#if 0
-  printf ("#define PT_SYSCALLTRACE_BIT\t\t\t%u\n\n", ffs (PT_SYSCALLTRACE) - 1);
-#endif
-
   for (i = 0; i < sizeof (tab) / sizeof (tab[0]); ++i)
     {
       if (tab[i].name[0] == '\0')

arch/ia64/vmlinux.lds.S

 #include <linux/config.h>
 
+#include <asm/cache.h>
 #include <asm/ptrace.h>
 #include <asm/system.h>
 
@@ -70,11 +71,6 @@ SECTIONS
 	{ *(__ksymtab) }
   __stop___ksymtab = .;
 
-  __start___kallsyms = .;	/* All kernel symbols for debugging */
-  __kallsyms : AT(ADDR(__kallsyms) - PAGE_OFFSET)
-	{ *(__kallsyms) }
-  __stop___kallsyms = .;
-
   /* Unwind info & table: */
   . = ALIGN(8);
   .IA_64.unwind_info : AT(ADDR(.IA_64.unwind_info) - PAGE_OFFSET)
@@ -124,10 +120,7 @@ SECTIONS
   .data.init_task : AT(ADDR(.data.init_task) - PAGE_OFFSET)
 	{ *(.data.init_task) }
 
-  .data.page_aligned : AT(ADDR(.data.page_aligned) - PAGE_OFFSET)
-        { *(.data.idt) }
-
-  . = ALIGN(64);
+  . = ALIGN(SMP_CACHE_BYTES);
   .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - PAGE_OFFSET)
         { *(.data.cacheline_aligned) }
 
@@ -135,6 +128,17 @@ SECTIONS
   .kstrtab : AT(ADDR(.kstrtab) - PAGE_OFFSET)
 	{ *(.kstrtab) }
 
+  /* Per-cpu data: */
+  . = ALIGN(PAGE_SIZE);
+  __phys_per_cpu_start = .;
+  .data.percpu PERCPU_ADDR : AT(__phys_per_cpu_start - PAGE_OFFSET)
+	{
+		__per_cpu_start = .;
+		*(.data.percpu)
+		__per_cpu_end = .;
+	}
+  . = __phys_per_cpu_start + 4096;	/* ensure percpu fits into smallest page size (4KB) */
+
   .data : AT(ADDR(.data) - PAGE_OFFSET)
 	{ *(.data) *(.gnu.linkonce.d*) CONSTRUCTORS }
 
@@ -151,7 +155,7 @@ SECTIONS
 	{ *(.sbss) *(.scommon) }
   .bss : AT(ADDR(.bss) - PAGE_OFFSET)
 	{ *(.bss) *(COMMON) }
-  . = ALIGN(64 / 8);
+
   _end = .;
 
   /* Stabs debugging sections.  */

arch/mips/kernel/smp.c

@@ -123,7 +123,7 @@ void __init smp_boot_cpus(void)
 		/* Spawn a new process normally.  Grab a pointer to
 		   its task struct so we can mess with it */
 		do_fork(CLONE_VM|CLONE_PID, 0, &regs, 0);
-		p = init_task.prev_task;
+		p = prev_task(&init_task);
 
 		/* Schedule the first task manually */
 		p->processor = i;
@@ -152,7 +152,7 @@ void __init smp_boot_cpus(void)
 		 * Linux can schedule processes on this slave.
 		 */
 		kernel_thread(0, NULL, CLONE_PID);
-		p = init_task.prev_task;
+		p = prev_task(&init_task);
 		sprintf(p->comm, "%s%d", "Idle", i);
 		init_tasks[i] = p;
 		p->processor = i;

arch/mips64/sgi-ip27/ip27-init.c

@@ -491,7 +491,7 @@ void allowboot(void)
 			 * Linux can schedule processes on this slave.
 			 */
 			kernel_thread(0, NULL, CLONE_PID);
-			p = init_task.prev_task;
+			p = prev_task(&init_task);
 			sprintf(p->comm, "%s%d", "Idle", num_cpus);
 			init_tasks[num_cpus] = p;
 			alloc_cpupda(cpu, num_cpus);

arch/ppc/kernel/smp.c

@@ -344,7 +344,7 @@ void __init smp_boot_cpus(void)
 		memset(&regs, 0, sizeof(struct pt_regs));
 		if (do_fork(CLONE_VM|CLONE_PID, 0, &regs, 0) < 0)
 			panic("failed fork for CPU %d", i);
-		p = init_task.prev_task;
+		p = prev_task(&init_task);
 		if (!p)
 			panic("No idle task for CPU %d", i);
 		init_idle(p, i);

arch/ppc64/kernel/smp.c

@@ -640,7 +640,7 @@ void __init smp_boot_cpus(void)
 
 		if (do_fork(CLONE_VM|CLONE_PID, 0, &regs, 0) < 0)
 			panic("failed fork for CPU %d", i);
-		p = init_task.prev_task;
+		p = prev_task(&init_task);
 		if (!p)
 			panic("No idle task for CPU %d", i);
 

arch/s390/kernel/smp.c

@@ -528,7 +528,7 @@ static void __init do_boot_cpu(int cpu)
          * We remove it from the pidhash and the runqueue
          * once we got the process:
          */
-        idle = init_task.prev_task;
+        idle = prev_task(&init_task);
         if (!idle)
                 panic("No idle process for CPU %d",cpu);
         idle->processor = cpu;

arch/s390x/kernel/smp.c

@@ -507,7 +507,7 @@ static void __init do_boot_cpu(int cpu)
          * We remove it from the pidhash and the runqueue
          * once we got the process:
          */
-        idle = init_task.prev_task;
+        idle = prev_task(&init_task);
         if (!idle)
                 panic("No idle process for CPU %d",cpu);
         idle->processor = cpu;

arch/sparc/kernel/sun4d_smp.c

@@ -220,7 +220,7 @@ void __init smp4d_boot_cpus(void)
 
 			cpucount++;
 
-			p = init_task.prev_task;
+			p = prev_task(&init_task);
 
 			p->cpu = i;
 

arch/sparc/kernel/sun4m_smp.c

@@ -193,7 +193,7 @@ void __init smp4m_boot_cpus(void)
 
 			cpucount++;
 
-			p = init_task.prev_task;
+			p = prev_task(&init_task);
 
 			p->cpu = i;
 

arch/sparc64/kernel/smp.c

@@ -270,7 +270,7 @@ void __init smp_boot_cpus(void)
 			kernel_thread(NULL, NULL, CLONE_PID);
 			cpucount++;
 
-			p = init_task.prev_task;
+			p = prev_task(&init_task);
 
 			init_idle(p, i);