17 files changed, 107 insertions, 55 deletions

diff --git a/arch/i386/defconfig b/arch/i386/defconfig
index ee2d79bd8af7..60c0c02574f0 100644
--- a/arch/i386/defconfig
+++ b/arch/i386/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.18-git7
-# Wed Sep 27 21:53:10 2006
+# Linux kernel version: 2.6.19-rc1
+# Thu Oct  5 13:04:53 2006
 #
 CONFIG_X86_32=y
 CONFIG_GENERIC_TIME=y
@@ -31,9 +31,11 @@ CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_SWAP=y
 CONFIG_SYSVIPC=y
+# CONFIG_IPC_NS is not set
 CONFIG_POSIX_MQUEUE=y
 # CONFIG_BSD_PROCESS_ACCT is not set
 # CONFIG_TASKSTATS is not set
+# CONFIG_UTS_NS is not set
 # CONFIG_AUDIT is not set
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
@@ -41,9 +43,10 @@ CONFIG_IKCONFIG_PROC=y
 # CONFIG_RELAY is not set
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
 # CONFIG_EMBEDDED is not set
 CONFIG_UID16=y
-CONFIG_SYSCTL=y
+# CONFIG_SYSCTL_SYSCALL is not set
 CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ALL=y
 # CONFIG_KALLSYMS_EXTRA_PASS is not set
@@ -76,6 +79,7 @@ CONFIG_STOP_MACHINE=y
 #
 # Block layer
 #
+CONFIG_BLOCK=y
 CONFIG_LBD=y
 # CONFIG_BLK_DEV_IO_TRACE is not set
 # CONFIG_LSF is not set
@@ -163,6 +167,7 @@ CONFIG_VM86=y
 # CONFIG_I8K is not set
 # CONFIG_X86_REBOOTFIXUPS is not set
 CONFIG_MICROCODE=y
+CONFIG_MICROCODE_OLD_INTERFACE=y
 CONFIG_X86_MSR=y
 CONFIG_X86_CPUID=y
 
@@ -177,6 +182,7 @@ CONFIG_HIGHMEM4G=y
 # CONFIG_HIGHMEM64G is not set
 CONFIG_PAGE_OFFSET=0xC0000000
 CONFIG_HIGHMEM=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
 # CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -295,6 +301,7 @@ CONFIG_PCI_MMCONFIG=y
 CONFIG_PCI_MSI=y
 # CONFIG_PCI_MULTITHREAD_PROBE is not set
 # CONFIG_PCI_DEBUG is not set
+# CONFIG_HT_IRQ is not set
 CONFIG_ISA_DMA_API=y
 # CONFIG_ISA is not set
 # CONFIG_MCA is not set
@@ -354,6 +361,7 @@ CONFIG_IP_PNP_DHCP=y
 # CONFIG_INET_TUNNEL is not set
 CONFIG_INET_XFRM_MODE_TRANSPORT=y
 CONFIG_INET_XFRM_MODE_TUNNEL=y
+# CONFIG_INET_XFRM_MODE_BEET is not set
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
@@ -370,6 +378,7 @@ CONFIG_IPV6=y
 # CONFIG_INET6_TUNNEL is not set
 CONFIG_INET6_XFRM_MODE_TRANSPORT=y
 CONFIG_INET6_XFRM_MODE_TUNNEL=y
+# CONFIG_INET6_XFRM_MODE_BEET is not set
 # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
 # CONFIG_IPV6_TUNNEL is not set
 # CONFIG_IPV6_SUBTREES is not set
@@ -519,6 +528,7 @@ CONFIG_BLK_DEV_AMD74XX=y
 # CONFIG_BLK_DEV_CS5535 is not set
 # CONFIG_BLK_DEV_HPT34X is not set
 # CONFIG_BLK_DEV_HPT366 is not set
+# CONFIG_BLK_DEV_JMICRON is not set
 # CONFIG_BLK_DEV_SC1200 is not set
 CONFIG_BLK_DEV_PIIX=y
 # CONFIG_BLK_DEV_IT821X is not set
@@ -615,6 +625,7 @@ CONFIG_AIC79XX_DEBUG_MASK=0
 # CONFIG_SCSI_IPR is not set
 # CONFIG_SCSI_QLOGIC_1280 is not set
 # CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_QLA_ISCSI is not set
 # CONFIG_SCSI_LPFC is not set
 # CONFIG_SCSI_DC395x is not set
 # CONFIG_SCSI_DC390T is not set
@@ -658,7 +669,6 @@ CONFIG_SATA_INTEL_COMBINED=y
 # CONFIG_PATA_HPT3X3 is not set
 # CONFIG_PATA_IT821X is not set
 # CONFIG_PATA_JMICRON is not set
-# CONFIG_PATA_LEGACY is not set
 # CONFIG_PATA_TRIFLEX is not set
 # CONFIG_PATA_MPIIX is not set
 # CONFIG_PATA_OLDPIIX is not set
@@ -667,7 +677,6 @@ CONFIG_SATA_INTEL_COMBINED=y
 # CONFIG_PATA_OPTI is not set
 # CONFIG_PATA_OPTIDMA is not set
 # CONFIG_PATA_PDC_OLD is not set
-# CONFIG_PATA_QDI is not set
 # CONFIG_PATA_RADISYS is not set
 # CONFIG_PATA_RZ1000 is not set
 # CONFIG_PATA_SC1200 is not set
@@ -684,6 +693,7 @@ CONFIG_SATA_INTEL_COMBINED=y
 CONFIG_MD=y
 # CONFIG_BLK_DEV_MD is not set
 CONFIG_BLK_DEV_DM=y
+# CONFIG_DM_DEBUG is not set
 # CONFIG_DM_CRYPT is not set
 # CONFIG_DM_SNAPSHOT is not set
 # CONFIG_DM_MIRROR is not set
@@ -874,6 +884,7 @@ CONFIG_NET_POLL_CONTROLLER=y
 # Input device support
 #
 CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
 
 #
 # Userland interfaces
@@ -896,6 +907,7 @@ CONFIG_KEYBOARD_ATKBD=y
 # CONFIG_KEYBOARD_LKKBD is not set
 # CONFIG_KEYBOARD_XTKBD is not set
 # CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
 CONFIG_INPUT_MOUSE=y
 CONFIG_MOUSE_PS2=y
 # CONFIG_MOUSE_SERIAL is not set
@@ -1023,12 +1035,12 @@ CONFIG_HANGCHECK_TIMER=y
 # Misc devices
 #
 # CONFIG_IBM_ASM is not set
+# CONFIG_TIFM_CORE is not set
 
 #
 # Multimedia devices
 #
 # CONFIG_VIDEO_DEV is not set
-CONFIG_VIDEO_V4L2=y
 
 #
 # Digital Video Broadcasting Devices
@@ -1134,6 +1146,7 @@ CONFIG_USB_STORAGE=y
 # CONFIG_USB_STORAGE_SDDR55 is not set
 # CONFIG_USB_STORAGE_JUMPSHOT is not set
 # CONFIG_USB_STORAGE_ALAUDA is not set
+# CONFIG_USB_STORAGE_KARMA is not set
 # CONFIG_USB_LIBUSUAL is not set
 
 #
@@ -1156,6 +1169,7 @@ CONFIG_USB_HIDINPUT=y
 # CONFIG_USB_ATI_REMOTE2 is not set
 # CONFIG_USB_KEYSPAN_REMOTE is not set
 # CONFIG_USB_APPLETOUCH is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
 
 #
 # USB Imaging devices
@@ -1187,6 +1201,7 @@ CONFIG_USB_MON=y
 #
 # CONFIG_USB_EMI62 is not set
 # CONFIG_USB_EMI26 is not set
+# CONFIG_USB_ADUTUX is not set
 # CONFIG_USB_AUERSWALD is not set
 # CONFIG_USB_RIO500 is not set
 # CONFIG_USB_LEGOTOWER is not set
@@ -1194,9 +1209,9 @@ CONFIG_USB_MON=y
 # CONFIG_USB_LED is not set
 # CONFIG_USB_CYPRESS_CY7C63 is not set
 # CONFIG_USB_CYTHERM is not set
-# CONFIG_USB_PHIDGETKIT is not set
-# CONFIG_USB_PHIDGETSERVO is not set
+# CONFIG_USB_PHIDGET is not set
 # CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_FTDI_ELAN is not set
 # CONFIG_USB_APPLEDISPLAY is not set
 # CONFIG_USB_SISUSBVGA is not set
 # CONFIG_USB_LD is not set
@@ -1281,6 +1296,7 @@ CONFIG_REISERFS_FS_POSIX_ACL=y
 # CONFIG_JFS_FS is not set
 CONFIG_FS_POSIX_ACL=y
 # CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
 # CONFIG_MINIX_FS is not set
 # CONFIG_ROMFS_FS is not set
@@ -1315,8 +1331,10 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 #
 CONFIG_PROC_FS=y
 CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
 CONFIG_SYSFS=y
 CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_HUGETLBFS=y
 CONFIG_HUGETLB_PAGE=y
 CONFIG_RAMFS=y
@@ -1366,6 +1384,7 @@ CONFIG_SUNRPC=y
 # CONFIG_CODA_FS is not set
 # CONFIG_AFS_FS is not set
 # CONFIG_9P_FS is not set
+CONFIG_GENERIC_ACL=y
 
 #
 # Partition Types
@@ -1418,6 +1437,10 @@ CONFIG_NLS_ISO8859_15=y
 CONFIG_NLS_UTF8=y
 
 #
+# Distributed Lock Manager
+#
+
+#
 # Instrumentation Support
 #
 CONFIG_PROFILING=y
@@ -1452,11 +1475,13 @@ CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_DEBUG_INFO is not set
 # CONFIG_DEBUG_FS is not set
 # CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_LIST is not set
 # CONFIG_FRAME_POINTER is not set
 CONFIG_UNWIND_INFO=y
 CONFIG_STACK_UNWIND=y
 # CONFIG_FORCED_INLINING is not set
 # CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_LKDTM is not set
 CONFIG_EARLY_PRINTK=y
 CONFIG_DEBUG_STACKOVERFLOW=y
 # CONFIG_DEBUG_STACK_USAGE is not set
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index 90faae5c5d30..2fd4b7d927c2 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -1193,11 +1193,11 @@ EXPORT_SYMBOL(switch_ipi_to_APIC_timer);
  * value into /proc/profile.
  */
 
-inline void smp_local_timer_interrupt(struct pt_regs * regs)
+inline void smp_local_timer_interrupt(void)
 {
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 #ifdef CONFIG_SMP
-        update_process_times(user_mode_vm(regs));
+        update_process_times(user_mode_vm(get_irq_regs()));
 #endif
 
         /*
@@ -1223,6 +1223,7 @@ inline void smp_local_timer_interrupt(struct pt_regs * regs)
 
 fastcall void smp_apic_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         int cpu = smp_processor_id();
 
         /*
@@ -1241,12 +1242,13 @@ fastcall void smp_apic_timer_interrupt(struct pt_regs *regs)
          * interrupt lock, which is the WrongThing (tm) to do.
          */
         irq_enter();
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 #ifndef CONFIG_SMP
-static void up_apic_timer_interrupt_call(struct pt_regs *regs)
+static void up_apic_timer_interrupt_call(void)
 {
         int cpu = smp_processor_id();
 
@@ -1255,11 +1257,11 @@ static void up_apic_timer_interrupt_call(struct pt_regs *regs)
          */
         per_cpu(irq_stat, cpu).apic_timer_irqs++;
 
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
 }
 #endif
 
-void smp_send_timer_broadcast_ipi(struct pt_regs *regs)
+void smp_send_timer_broadcast_ipi(void)
 {
         cpumask_t mask;
 
@@ -1272,7 +1274,7 @@ void smp_send_timer_broadcast_ipi(struct pt_regs *regs)
                  * We can directly call the apic timer interrupt handler
                  * in UP case. Minus all irq related functions
                  */
-                up_apic_timer_interrupt_call(regs);
+                up_apic_timer_interrupt_call();
 #endif
         }
 }
diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c
index d07ed31f11e3..d53eafb6daa7 100644
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -335,13 +335,13 @@ void init_8259A(int auto_eoi)
  */
  
 
-static irqreturn_t math_error_irq(int cpl, void *dev_id, struct pt_regs *regs)
+static irqreturn_t math_error_irq(int cpl, void *dev_id)
 {
         extern void math_error(void __user *);
         outb(0,0xF0);
         if (ignore_fpu_irq || !boot_cpu_data.hard_math)
                 return IRQ_NONE;
-        math_error((void __user *)regs->eip);
+        math_error((void __user *)get_irq_regs()->eip);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index b7287fb499f3..cd082c36ca03 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -1184,8 +1184,8 @@ static int __assign_irq_vector(int irq)
 
         BUG_ON((unsigned)irq >= NR_IRQ_VECTORS);
 
-        if (IO_APIC_VECTOR(irq) > 0)
-                return IO_APIC_VECTOR(irq);
+        if (irq_vector[irq] > 0)
+                return irq_vector[irq];
 
         current_vector += 8;
         if (current_vector == SYSCALL_VECTOR)
@@ -1199,7 +1199,7 @@ static int __assign_irq_vector(int irq)
         }
 
         vector = current_vector;
-        IO_APIC_VECTOR(irq) = vector;
+        irq_vector[irq] = vector;
 
         return vector;
 }
@@ -1967,7 +1967,7 @@ static void ack_ioapic_quirk_irq(unsigned int irq)
  * operation to prevent an edge-triggered interrupt escaping meanwhile.
  * The idea is from Manfred Spraul.  --macro
  */
-        i = IO_APIC_VECTOR(irq);
+        i = irq_vector[irq];
 
         v = apic_read(APIC_TMR + ((i & ~0x1f) >> 1));
 
@@ -1984,7 +1984,7 @@ static void ack_ioapic_quirk_irq(unsigned int irq)
 
 static int ioapic_retrigger_irq(unsigned int irq)
 {
-        send_IPI_self(IO_APIC_VECTOR(irq));
+        send_IPI_self(irq_vector[irq]);
 
         return 1;
 }
@@ -2020,7 +2020,7 @@ static inline void init_IO_APIC_traps(void)
          */
         for (irq = 0; irq < NR_IRQS ; irq++) {
                 int tmp = irq;
-                if (IO_APIC_IRQ(tmp) && !IO_APIC_VECTOR(tmp)) {
+                if (IO_APIC_IRQ(tmp) && !irq_vector[tmp]) {
                         /*
                          * Hmm.. We don't have an entry for this,
                          * so default to an old-fashioned 8259
diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 3dd2e180151b..8cfc7dbec7b9 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -53,6 +53,7 @@ static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
  */
 fastcall unsigned int do_IRQ(struct pt_regs *regs)
 {       
+        struct pt_regs *old_regs;
         /* high bit used in ret_from_ code */
         int irq = ~regs->orig_eax;
         struct irq_desc *desc = irq_desc + irq;
@@ -67,6 +68,7 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
                 BUG();
         }
 
+        old_regs = set_irq_regs(regs);
         irq_enter();
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
         /* Debugging check for stack overflow: is there less than 1KB free? */
@@ -95,7 +97,7 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
          * current stack (which is the irq stack already after all)
          */
         if (curctx != irqctx) {
-                int arg1, arg2, arg3, ebx;
+                int arg1, arg2, ebx;
 
                 /* build the stack frame on the IRQ stack */
                 isp = (u32*) ((char*)irqctx + sizeof(*irqctx));
@@ -114,17 +116,17 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
                         "       xchgl  %%ebx,%%esp      \n"
                         "       call   *%%edi           \n"
                         "       movl   %%ebx,%%esp      \n"
-                        : "=a" (arg1), "=d" (arg2), "=c" (arg3), "=b" (ebx)
-                        :  "0" (irq),   "1" (desc),  "2" (regs),  "3" (isp),
+                        : "=a" (arg1), "=d" (arg2), "=b" (ebx)
+                        :  "0" (irq),   "1" (desc),  "2" (isp),
                            "D" (desc->handle_irq)
                         : "memory", "cc"
                 );
         } else
 #endif
-                desc->handle_irq(irq, desc, regs);
+                desc->handle_irq(irq, desc);
 
         irq_exit();
-
+        set_irq_regs(old_regs);
         return 1;
 }
 
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index dad02a960e03..b0a07801d9df 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -328,6 +328,7 @@ extern void kernel_thread_helper(void);
 int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 {
         struct pt_regs regs;
+        int err;
 
         memset(&regs, 0, sizeof(regs));
 
@@ -342,7 +343,10 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
         regs.eflags = X86_EFLAGS_IF | X86_EFLAGS_SF | X86_EFLAGS_PF | 0x2;
 
         /* Ok, create the new process.. */
-        return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
+        err = do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
+        if (err == 0) /* terminate kernel stack */
+                task_pt_regs(current)->eip = 0;
+        return err;
 }
 EXPORT_SYMBOL(kernel_thread);
 
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index 1b080ab8a49f..31e5c6573aae 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -321,6 +321,7 @@ static inline void leave_mm (unsigned long cpu)
 
 fastcall void smp_invalidate_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         unsigned long cpu;
 
         cpu = get_cpu();
@@ -351,6 +352,7 @@ fastcall void smp_invalidate_interrupt(struct pt_regs *regs)
         smp_mb__after_clear_bit();
 out:
         put_cpu_no_resched();
+        set_irq_regs(old_regs);
 }
 
 static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
@@ -605,11 +607,14 @@ void smp_send_stop(void)
  */
 fastcall void smp_reschedule_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         ack_APIC_irq();
+        set_irq_regs(old_regs);
 }
 
 fastcall void smp_call_function_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         void (*func) (void *info) = call_data->func;
         void *info = call_data->info;
         int wait = call_data->wait;
@@ -632,6 +637,7 @@ fastcall void smp_call_function_interrupt(struct pt_regs *regs)
                 mb();
                 atomic_inc(&call_data->finished);
         }
+        set_irq_regs(old_regs);
 }
 
 /*
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 58a2d5582419..78af572fd17c 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -161,7 +161,7 @@ EXPORT_SYMBOL(profile_pc);
  * Time Stamp Counter value at the time of the timer interrupt, so that
  * we later on can estimate the time of day more exactly.
  */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
         /*
          * Here we are in the timer irq handler. We just have irqs locally
@@ -188,7 +188,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         }
 #endif
 
-        do_timer_interrupt_hook(regs);
+        do_timer_interrupt_hook();
 
 
         if (MCA_bus) {
@@ -201,15 +201,15 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                 high bit of the PPI port B (0x61).  Note that some PS/2s,
                 notably the 55SX, work fine if this is removed.  */
 
-                irq = inb_p( 0x61 );    /* read the current state */
-                outb_p( irq|0x80, 0x61 );       /* reset the IRQ */
+                u8 irq_v = inb_p( 0x61 );       /* read the current state */
+                outb_p( irq_v|0x80, 0x61 );     /* reset the IRQ */
         }
 
         write_sequnlock(&xtime_lock);
 
 #ifdef CONFIG_X86_LOCAL_APIC
         if (using_apic_timer)
-                smp_send_timer_broadcast_ipi(regs);
+                smp_send_timer_broadcast_ipi();
 #endif
 
         return IRQ_HANDLED;
diff --git a/arch/i386/kernel/time_hpet.c b/arch/i386/kernel/time_hpet.c
index 6bf14a4e995e..1a2a979cf6a3 100644
--- a/arch/i386/kernel/time_hpet.c
+++ b/arch/i386/kernel/time_hpet.c
@@ -441,7 +441,7 @@ int hpet_rtc_dropped_irq(void)
         return 1;
 }
 
-irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id)
 {
         struct rtc_time curr_time;
         unsigned long rtc_int_flag = 0;
@@ -480,7 +480,7 @@ irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         }
         if (call_rtc_interrupt) {
                 rtc_int_flag |= (RTC_IRQF | (RTC_NUM_INTS << 8));
-                rtc_interrupt(rtc_int_flag, dev_id, regs);
+                rtc_interrupt(rtc_int_flag, dev_id);
         }
         return IRQ_HANDLED;
 }
diff --git a/arch/i386/kernel/vm86.c b/arch/i386/kernel/vm86.c
index 8355d8d87d18..cbcd61d6120b 100644
--- a/arch/i386/kernel/vm86.c
+++ b/arch/i386/kernel/vm86.c
@@ -714,7 +714,7 @@ static int irqbits;
         | (1 << SIGUSR1) | (1 << SIGUSR2) | (1 << SIGIO)  | (1 << SIGURG) \
         | (1 << SIGUNUSED) )
         
-static irqreturn_t irq_handler(int intno, void *dev_id, struct pt_regs * regs)
+static irqreturn_t irq_handler(int intno, void *dev_id)
 {
         int irq_bit;
         unsigned long flags;
diff --git a/arch/i386/lib/semaphore.S b/arch/i386/lib/semaphore.S
index ef6ad9e1a609..c01eb39c0b43 100644
--- a/arch/i386/lib/semaphore.S
+++ b/arch/i386/lib/semaphore.S
@@ -152,6 +152,8 @@ ENTRY(__read_lock_failed)
 
 #endif
 
+#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
+
 /* Fix up special calling conventions */
 ENTRY(call_rwsem_down_read_failed)
         CFI_STARTPROC
@@ -214,3 +216,4 @@ ENTRY(call_rwsem_downgrade_wake)
         CFI_ENDPROC
         END(call_rwsem_downgrade_wake)
 
+#endif
diff --git a/arch/i386/mach-visws/visws_apic.c b/arch/i386/mach-visws/visws_apic.c
index 5929f884d79b..07097ed48890 100644
--- a/arch/i386/mach-visws/visws_apic.c
+++ b/arch/i386/mach-visws/visws_apic.c
@@ -191,7 +191,7 @@ static struct hw_interrupt_type piix4_virtual_irq_type = {
  * enable_irq gets the right irq. This 'master' irq is never directly
  * manipulated by any driver.
  */
-static irqreturn_t piix4_master_intr(int irq, void *dev_id, struct pt_regs * regs)
+static irqreturn_t piix4_master_intr(int irq, void *dev_id)
 {
         int realirq;
         irq_desc_t *desc;
@@ -244,7 +244,7 @@ static irqreturn_t piix4_master_intr(int irq, void *dev_id, struct pt_regs * reg
         kstat_cpu(smp_processor_id()).irqs[realirq]++;
 
         if (likely(desc->action != NULL))
-                handle_IRQ_event(realirq, regs, desc->action);
+                handle_IRQ_event(realirq, desc->action);
 
         if (!(desc->status & IRQ_DISABLED))
                 enable_8259A_irq(realirq);
diff --git a/arch/i386/mach-voyager/voyager_basic.c b/arch/i386/mach-voyager/voyager_basic.c
index 80b7f2fc4f46..c639d30d8bdc 100644
--- a/arch/i386/mach-voyager/voyager_basic.c
+++ b/arch/i386/mach-voyager/voyager_basic.c
@@ -87,7 +87,7 @@ voyager_detect(struct voyager_bios_info *bios)
 }
 
 void
-voyager_system_interrupt(int cpl, void *dev_id, struct pt_regs *regs)
+voyager_system_interrupt(int cpl, void *dev_id)
 {
         printk("Voyager: detected system interrupt\n");
 }
diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c
index 856c73fcb7e7..d42422fc4af3 100644
--- a/arch/i386/mach-voyager/voyager_smp.c
+++ b/arch/i386/mach-voyager/voyager_smp.c
@@ -126,10 +126,10 @@ send_QIC_CPI(__u32 cpuset, __u8 cpi)
 }
 
 static inline void
-wrapper_smp_local_timer_interrupt(struct pt_regs *regs)
+wrapper_smp_local_timer_interrupt(void)
 {
         irq_enter();
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
         irq_exit();
 }
 
@@ -786,7 +786,7 @@ fastcall void
 smp_vic_sys_interrupt(struct pt_regs *regs)
 {
         ack_CPI(VIC_SYS_INT);
-        printk("Voyager SYSTEM INTERRUPT\n");
+        printk("Voyager SYSTEM INTERRUPT\n");   
 }
 
 /* Handle a voyager CMN_INT; These interrupts occur either because of
@@ -1135,7 +1135,9 @@ EXPORT_SYMBOL(smp_call_function);
 fastcall void 
 smp_apic_timer_interrupt(struct pt_regs *regs)
 {
-        wrapper_smp_local_timer_interrupt(regs);
+        struct pt_regs *old_regs = set_irq_regs(regs);
+        wrapper_smp_local_timer_interrupt();
+        set_irq_regs(old_regs);
 }
 
 /* All of the QUAD interrupt GATES */
@@ -1143,7 +1145,9 @@ fastcall void
 smp_qic_timer_interrupt(struct pt_regs *regs)
 {
         ack_QIC_CPI(QIC_TIMER_CPI);
-        wrapper_smp_local_timer_interrupt(regs);
+        struct pt_regs *old_regs = set_irq_regs(regs);
+        wrapper_smp_local_timer_interrupt(void);
+        set_irq_regs(old_regs);
 }
 
 fastcall void
@@ -1177,6 +1181,7 @@ smp_qic_call_function_interrupt(struct pt_regs *regs)
 fastcall void
 smp_vic_cpi_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         __u8 cpu = smp_processor_id();
 
         if(is_cpu_quad())
@@ -1185,7 +1190,7 @@ smp_vic_cpi_interrupt(struct pt_regs *regs)
                 ack_VIC_CPI(VIC_CPI_LEVEL0);
 
         if(test_and_clear_bit(VIC_TIMER_CPI, &vic_cpi_mailbox[cpu]))
-                wrapper_smp_local_timer_interrupt(regs);
+                wrapper_smp_local_timer_interrupt();
         if(test_and_clear_bit(VIC_INVALIDATE_CPI, &vic_cpi_mailbox[cpu]))
                 smp_invalidate_interrupt();
         if(test_and_clear_bit(VIC_RESCHEDULE_CPI, &vic_cpi_mailbox[cpu]))
@@ -1194,6 +1199,7 @@ smp_vic_cpi_interrupt(struct pt_regs *regs)
                 smp_enable_irq_interrupt();
         if(test_and_clear_bit(VIC_CALL_FUNCTION_CPI, &vic_cpi_mailbox[cpu]))
                 smp_call_function_interrupt();
+        set_irq_regs(old_regs);
 }
 
 static void
@@ -1266,8 +1272,10 @@ smp_send_stop(void)
 void
 smp_vic_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         send_CPI_allbutself(VIC_TIMER_CPI);
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
+        set_irq_regs(old_regs);
 }
 
 /* local (per CPU) timer interrupt.  It does both profiling and
@@ -1279,12 +1287,12 @@ smp_vic_timer_interrupt(struct pt_regs *regs)
  * value into /proc/profile.
  */
 void
-smp_local_timer_interrupt(struct pt_regs * regs)
+smp_local_timer_interrupt(void)
 {
         int cpu = smp_processor_id();
         long weight;
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
         if (--per_cpu(prof_counter, cpu) <= 0) {
                 /*
                  * The multiplier may have changed since the last time we got
@@ -1302,7 +1310,7 @@ smp_local_timer_interrupt(struct pt_regs * regs)
                                                 per_cpu(prof_counter, cpu);
                 }
 
-                update_process_times(user_mode_vm(regs));
+                update_process_times(user_mode_vm(irq_regs));
         }
 
         if( ((1<<cpu) & voyager_extended_vic_processors) == 0)
diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c
index 5acf0b4743cf..431c9a51b157 100644
--- a/arch/i386/pci/direct.c
+++ b/arch/i386/pci/direct.c
@@ -256,6 +256,8 @@ static int __init pci_check_type2(void)
 
 void __init pci_direct_init(int type)
 {
+        if (type == 0)
+                return;
         printk(KERN_INFO "PCI: Using configuration type %d\n", type);
         if (type == 1)
                 raw_pci_ops = &pci_direct_conf1;
diff --git a/arch/i386/pci/init.c b/arch/i386/pci/init.c
index d028e1b05c36..b21b6da8ab1d 100644
--- a/arch/i386/pci/init.c
+++ b/arch/i386/pci/init.c
@@ -28,6 +28,10 @@ static __init int pci_access_init(void)
 #ifdef CONFIG_PCI_DIRECT
         pci_direct_init(type);
 #endif
+        if (!raw_pci_ops)
+                printk(KERN_ERR
+                "PCI: Fatal: No config space access function found\n");
+
         return 0;
 }
 arch_initcall(pci_access_init);
diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c
index 47f02af74be3..dbc4aae91959 100644
--- a/arch/i386/pci/irq.c
+++ b/arch/i386/pci/irq.c
@@ -1141,10 +1141,6 @@ static int pirq_enable_irq(struct pci_dev *dev)
                         }
                         dev = temp_dev;
                         if (irq >= 0) {
-#ifdef CONFIG_PCI_MSI
-                                if (!platform_legacy_irq(irq))
-                                        irq = IO_APIC_VECTOR(irq);
-#endif
                                 printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
                                         pci_name(dev), 'A' + pin, irq);
                                 dev->irq = irq;