Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (151 commits)
  powerpc: Fix usage of 64-bit instruction in 32-bit altivec code
  MAINTAINERS: Add PowerPC patterns
  powerpc/pseries: Track previous CPPR values to correctly EOI interrupts
  powerpc/pseries: Correct pseries/dlpar.c build break without CONFIG_SMP
  powerpc: Make "intspec" pointers in irq_host->xlate() const
  powerpc/8xx: DTLB Miss cleanup
  powerpc/8xx: Remove DIRTY pte handling in DTLB Error.
  powerpc/8xx: Start using dcbX instructions in various copy routines
  powerpc/8xx: Restore _PAGE_WRITETHRU
  powerpc/8xx: Add missing Guarded setting in DTLB Error.
  powerpc/8xx: Fixup DAR from buggy dcbX instructions.
  powerpc/8xx: Tag DAR with 0x00f0 to catch buggy instructions.
  powerpc/8xx: Update TLB asm so it behaves as linux mm expects.
  powerpc/8xx: Invalidate non present TLBs
  powerpc/pseries: Serialize cpu hotplug operations during deactivate Vs deallocate
  pseries/pseries: Add code to online/offline CPUs of a DLPAR node
  powerpc: stop_this_cpu: remove the cpu from the online map.
  powerpc/pseries: Add kernel based CPU DLPAR handling
  sysfs/cpu: Add probe/release files
  powerpc/pseries: Kernel DLPAR Infrastructure
  ...

24 files changed, 968 insertions, 354 deletions

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index b23664a0b86c..c002b0410219 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -42,10 +42,11 @@ obj-$(CONFIG_ALTIVEC)		+= vecemu.o
 obj-$(CONFIG_PPC_970_NAP)	+= idle_power4.o
 obj-$(CONFIG_PPC_OF)		+= of_device.o of_platform.o prom_parse.o
 obj-$(CONFIG_PPC_CLOCK)		+= clock.o
-procfs-$(CONFIG_PPC64)		:= proc_ppc64.o
+procfs-y			:= proc_powerpc.o
 obj-$(CONFIG_PROC_FS)		+= $(procfs-y)
 rtaspci-$(CONFIG_PPC64)-$(CONFIG_PCI)	:= rtas_pci.o
 obj-$(CONFIG_PPC_RTAS)		+= rtas.o rtas-rtc.o $(rtaspci-y-y)
+obj-$(CONFIG_PPC_RTAS_DAEMON)	+= rtasd.o
 obj-$(CONFIG_RTAS_FLASH)	+= rtas_flash.o
 obj-$(CONFIG_RTAS_PROC)		+= rtas-proc.o
 obj-$(CONFIG_LPARCFG)		+= lparcfg.o
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 0812b0f414bb..a6c2b63227b3 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -190,6 +190,11 @@ int main(void)
 	DEFINE(PACA_SYSTEM_TIME, offsetof(struct paca_struct, system_time));
 	DEFINE(PACA_DATA_OFFSET, offsetof(struct paca_struct, data_offset));
 	DEFINE(PACA_TRAP_SAVE, offsetof(struct paca_struct, trap_save));
+#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
+	DEFINE(PACA_KVM_IN_GUEST, offsetof(struct paca_struct, kvm_in_guest));
+	DEFINE(PACA_KVM_SLB, offsetof(struct paca_struct, kvm_slb));
+	DEFINE(PACA_KVM_SLB_MAX, offsetof(struct paca_struct, kvm_slb_max));
+#endif
 #endif /* CONFIG_PPC64 */
 
 	/* RTAS */
@@ -398,14 +403,24 @@ int main(void)
 	DEFINE(VCPU_LAST_INST, offsetof(struct kvm_vcpu, arch.last_inst));
 	DEFINE(VCPU_FAULT_DEAR, offsetof(struct kvm_vcpu, arch.fault_dear));
 	DEFINE(VCPU_FAULT_ESR, offsetof(struct kvm_vcpu, arch.fault_esr));
+
+	/* book3s_64 */
+#ifdef CONFIG_PPC64
+	DEFINE(VCPU_FAULT_DSISR, offsetof(struct kvm_vcpu, arch.fault_dsisr));
+	DEFINE(VCPU_HOST_RETIP, offsetof(struct kvm_vcpu, arch.host_retip));
+	DEFINE(VCPU_HOST_R2, offsetof(struct kvm_vcpu, arch.host_r2));
+	DEFINE(VCPU_HOST_MSR, offsetof(struct kvm_vcpu, arch.host_msr));
+	DEFINE(VCPU_SHADOW_MSR, offsetof(struct kvm_vcpu, arch.shadow_msr));
+	DEFINE(VCPU_TRAMPOLINE_LOWMEM, offsetof(struct kvm_vcpu, arch.trampoline_lowmem));
+	DEFINE(VCPU_TRAMPOLINE_ENTER, offsetof(struct kvm_vcpu, arch.trampoline_enter));
+	DEFINE(VCPU_HIGHMEM_HANDLER, offsetof(struct kvm_vcpu, arch.highmem_handler));
+	DEFINE(VCPU_HFLAGS, offsetof(struct kvm_vcpu, arch.hflags));
+#endif
 #endif
 #ifdef CONFIG_44x
 	DEFINE(PGD_T_LOG2, PGD_T_LOG2);
 	DEFINE(PTE_T_LOG2, PTE_T_LOG2);
 #endif
-#ifdef CONFIG_FSL_BOOKE
-	DEFINE(TLBCAM_SIZE, sizeof(struct tlbcam));
-#endif
 
 #ifdef CONFIG_KVM_EXIT_TIMING
 	DEFINE(VCPU_TIMING_EXIT_TBU, offsetof(struct kvm_vcpu,
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 0a8439aafdd1..6f4613dd05ef 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -373,7 +373,7 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
 	hard_irq_disable();
 
 	for_each_irq(i) {
-		struct irq_desc *desc = irq_desc + i;
+		struct irq_desc *desc = irq_to_desc(i);
 
 		if (desc->status & IRQ_INPROGRESS)
 			desc->chip->eoi(i);
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
index e96cbbd9b449..59c928564a03 100644
--- a/arch/powerpc/kernel/dma-swiotlb.c
+++ b/arch/powerpc/kernel/dma-swiotlb.c
@@ -21,7 +21,6 @@
 #include <asm/dma.h>
 #include <asm/abs_addr.h>
 
-int swiotlb __read_mostly;
 unsigned int ppc_swiotlb_enable;
 
 /*
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index c7eb4e0eb86c..e3be98ffe2a7 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -41,6 +41,7 @@ __start_interrupts:
 	. = 0x200
 _machine_check_pSeries:
 	HMT_MEDIUM
+	DO_KVM	0x200
 	mtspr	SPRN_SPRG_SCRATCH0,r13		/* save r13 */
 	EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common)
 
@@ -48,6 +49,7 @@ _machine_check_pSeries:
 	.globl data_access_pSeries
 data_access_pSeries:
 	HMT_MEDIUM
+	DO_KVM	0x300
 	mtspr	SPRN_SPRG_SCRATCH0,r13
 BEGIN_FTR_SECTION
 	mfspr	r13,SPRN_SPRG_PACA
@@ -77,6 +79,7 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_SLB)
 	.globl data_access_slb_pSeries
 data_access_slb_pSeries:
 	HMT_MEDIUM
+	DO_KVM	0x380
 	mtspr	SPRN_SPRG_SCRATCH0,r13
 	mfspr	r13,SPRN_SPRG_PACA		/* get paca address into r13 */
 	std	r3,PACA_EXSLB+EX_R3(r13)
@@ -115,6 +118,7 @@ data_access_slb_pSeries:
 	.globl instruction_access_slb_pSeries
 instruction_access_slb_pSeries:
 	HMT_MEDIUM
+	DO_KVM	0x480
 	mtspr	SPRN_SPRG_SCRATCH0,r13
 	mfspr	r13,SPRN_SPRG_PACA		/* get paca address into r13 */
 	std	r3,PACA_EXSLB+EX_R3(r13)
@@ -154,6 +158,7 @@ instruction_access_slb_pSeries:
 	.globl	system_call_pSeries
 system_call_pSeries:
 	HMT_MEDIUM
+	DO_KVM	0xc00
 BEGIN_FTR_SECTION
 	cmpdi	r0,0x1ebe
 	beq-	1f
@@ -187,14 +192,17 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE)
 	 */
 performance_monitor_pSeries_1:
 	. = 0xf00
+	DO_KVM	0xf00
 	b	performance_monitor_pSeries
 
 altivec_unavailable_pSeries_1:
 	. = 0xf20
+	DO_KVM	0xf20
 	b	altivec_unavailable_pSeries
 
 vsx_unavailable_pSeries_1:
 	. = 0xf40
+	DO_KVM	0xf40
 	b	vsx_unavailable_pSeries
 
 #ifdef CONFIG_CBE_RAS
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index c38afdb45d7b..925807488022 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -37,6 +37,7 @@
 #include <asm/firmware.h>
 #include <asm/page_64.h>
 #include <asm/irqflags.h>
+#include <asm/kvm_book3s_64_asm.h>
 
 /* The physical memory is layed out such that the secondary processor
  * spin code sits at 0x0000...0x00ff. On server, the vectors follow
@@ -165,6 +166,12 @@ exception_marker:
 #include "exceptions-64s.S"
 #endif
 
+/* KVM trampoline code needs to be close to the interrupt handlers */
+
+#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
+#include "../kvm/book3s_64_rmhandlers.S"
+#endif
+
 _GLOBAL(generic_secondary_thread_init)
 	mr	r24,r3
 
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 6ded19d01891..678f98cd5e64 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -206,6 +206,8 @@ MachineCheck:
 	EXCEPTION_PROLOG
 	mfspr r4,SPRN_DAR
 	stw r4,_DAR(r11)
+	li r5,0x00f0
+	mtspr SPRN_DAR,r5	/* Tag DAR, to be used in DTLB Error */
 	mfspr r5,SPRN_DSISR
 	stw r5,_DSISR(r11)
 	addi r3,r1,STACK_FRAME_OVERHEAD
@@ -222,6 +224,8 @@ DataAccess:
 	stw	r10,_DSISR(r11)
 	mr	r5,r10
 	mfspr	r4,SPRN_DAR
+	li	r10,0x00f0
+	mtspr	SPRN_DAR,r10	/* Tag DAR, to be used in DTLB Error */
 	EXC_XFER_EE_LITE(0x300, handle_page_fault)
 
 /* Instruction access exception.
@@ -244,6 +248,8 @@ Alignment:
 	EXCEPTION_PROLOG
 	mfspr	r4,SPRN_DAR
 	stw	r4,_DAR(r11)
+	li	r5,0x00f0
+	mtspr	SPRN_DAR,r5	/* Tag DAR, to be used in DTLB Error */
 	mfspr	r5,SPRN_DSISR
 	stw	r5,_DSISR(r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
@@ -333,26 +339,20 @@ InstructionTLBMiss:
 	mfspr	r11, SPRN_MD_TWC	/* ....and get the pte address */
 	lwz	r10, 0(r11)	/* Get the pte */
 
-#ifdef CONFIG_SWAP
-	/* do not set the _PAGE_ACCESSED bit of a non-present page */
-	andi.	r11, r10, _PAGE_PRESENT
-	beq	4f
-	ori	r10, r10, _PAGE_ACCESSED
-	mfspr	r11, SPRN_MD_TWC	/* get the pte address again */
-	stw	r10, 0(r11)
-4:
-#else
-	ori	r10, r10, _PAGE_ACCESSED
-	stw	r10, 0(r11)
-#endif
+	andi.	r11, r10, _PAGE_ACCESSED | _PAGE_PRESENT
+	cmpwi	cr0, r11, _PAGE_ACCESSED | _PAGE_PRESENT
+	bne-	cr0, 2f
+
+	/* Clear PP lsb, 0x400 */
+	rlwinm 	r10, r10, 0, 22, 20
 
 	/* The Linux PTE won't go exactly into the MMU TLB.
-	 * Software indicator bits 21, 22 and 28 must be clear.
+	 * Software indicator bits 22 and 28 must be clear.
 	 * Software indicator bits 24, 25, 26, and 27 must be
 	 * set.  All other Linux PTE bits control the behavior
 	 * of the MMU.
 	 */
-2:	li	r11, 0x00f0
+	li	r11, 0x00f0
 	rlwimi	r10, r11, 0, 24, 28	/* Set 24-27, clear 28 */
 	DO_8xx_CPU6(0x2d80, r3)
 	mtspr	SPRN_MI_RPN, r10	/* Update TLB entry */
@@ -365,6 +365,22 @@ InstructionTLBMiss:
 	lwz	r3, 8(r0)
 #endif
 	rfi
+2:
+	mfspr	r11, SPRN_SRR1
+	/* clear all error bits as TLB Miss
+	 * sets a few unconditionally
+	*/
+	rlwinm	r11, r11, 0, 0xffff
+	mtspr	SPRN_SRR1, r11
+
+	mfspr	r10, SPRN_M_TW	/* Restore registers */
+	lwz	r11, 0(r0)
+	mtcr	r11
+	lwz	r11, 4(r0)
+#ifdef CONFIG_8xx_CPU6
+	lwz	r3, 8(r0)
+#endif
+	b	InstructionAccess
 
 	. = 0x1200
 DataStoreTLBMiss:
@@ -406,29 +422,45 @@ DataStoreTLBMiss:
 	 * above.
 	 */
 	rlwimi	r11, r10, 0, 27, 27
+	/* Insert the WriteThru flag into the TWC from the Linux PTE.
+	 * It is bit 25 in the Linux PTE and bit 30 in the TWC
+	 */
+	rlwimi	r11, r10, 32-5, 30, 30
 	DO_8xx_CPU6(0x3b80, r3)
 	mtspr	SPRN_MD_TWC, r11
 
-#ifdef CONFIG_SWAP
-	/* do not set the _PAGE_ACCESSED bit of a non-present page */
-	andi.	r11, r10, _PAGE_PRESENT
-	beq	4f
-	ori	r10, r10, _PAGE_ACCESSED
-4:
-	/* and update pte in table */
-#else
-	ori	r10, r10, _PAGE_ACCESSED
-#endif
-	mfspr	r11, SPRN_MD_TWC	/* get the pte address again */
-	stw	r10, 0(r11)
+	/* Both _PAGE_ACCESSED and _PAGE_PRESENT has to be set.
+	 * We also need to know if the insn is a load/store, so:
+	 * Clear _PAGE_PRESENT and load that which will
+	 * trap into DTLB Error with store bit set accordinly.
+	 */
+	/* PRESENT=0x1, ACCESSED=0x20
+	 * r11 = ((r10 & PRESENT) & ((r10 & ACCESSED) >> 5));
+	 * r10 = (r10 & ~PRESENT) | r11;
+	 */
+	rlwinm	r11, r10, 32-5, _PAGE_PRESENT
+	and	r11, r11, r10
+	rlwimi	r10, r11, 0, _PAGE_PRESENT
+
+	/* Honour kernel RO, User NA */
+	/* 0x200 == Extended encoding, bit 22 */
+	/* r11 =  (r10 & _PAGE_USER) >> 2 */
+	rlwinm	r11, r10, 32-2, 0x200
+	or	r10, r11, r10
+	/* r11 =  (r10 & _PAGE_RW) >> 1 */
+	rlwinm	r11, r10, 32-1, 0x200
+	or	r10, r11, r10
+	/* invert RW and 0x200 bits */
+	xori	r10, r10, _PAGE_RW | 0x200
 
 	/* The Linux PTE won't go exactly into the MMU TLB.
-	 * Software indicator bits 21, 22 and 28 must be clear.
+	 * Software indicator bits 22 and 28 must be clear.
 	 * Software indicator bits 24, 25, 26, and 27 must be
 	 * set.  All other Linux PTE bits control the behavior
 	 * of the MMU.
 	 */
 2:	li	r11, 0x00f0
+	mtspr	SPRN_DAR,r11	/* Tag DAR */
 	rlwimi	r10, r11, 0, 24, 28	/* Set 24-27, clear 28 */
 	DO_8xx_CPU6(0x3d80, r3)
 	mtspr	SPRN_MD_RPN, r10	/* Update TLB entry */
@@ -469,97 +501,10 @@ DataTLBError:
 	stw	r10, 0(r0)
 	stw	r11, 4(r0)
 
-	/* First, make sure this was a store operation.
-	*/
-	mfspr	r10, SPRN_DSISR
-	andis.	r11, r10, 0x0200	/* If set, indicates store op */
-	beq	2f
-
-	/* The EA of a data TLB miss is automatically stored in the MD_EPN
-	 * register.  The EA of a data TLB error is automatically stored in
-	 * the DAR, but not the MD_EPN register.  We must copy the 20 most
-	 * significant bits of the EA from the DAR to MD_EPN before we
-	 * start walking the page tables.  We also need to copy the CASID
-	 * value from the M_CASID register.
-	 * Addendum:  The EA of a data TLB error is _supposed_ to be stored
-	 * in DAR, but it seems that this doesn't happen in some cases, such
-	 * as when the error is due to a dcbi instruction to a page with a
-	 * TLB that doesn't have the changed bit set.  In such cases, there
-	 * does not appear to be any way  to recover the EA of the error
-	 * since it is neither in DAR nor MD_EPN.  As a workaround, the
-	 * _PAGE_HWWRITE bit is set for all kernel data pages when the PTEs
-	 * are initialized in mapin_ram().  This will avoid the problem,
-	 * assuming we only use the dcbi instruction on kernel addresses.
-	 */
 	mfspr	r10, SPRN_DAR
-	rlwinm	r11, r10, 0, 0, 19
-	ori	r11, r11, MD_EVALID
-	mfspr	r10, SPRN_M_CASID
-	rlwimi	r11, r10, 0, 28, 31
-	DO_8xx_CPU6(0x3780, r3)
-	mtspr	SPRN_MD_EPN, r11
-
-	mfspr	r10, SPRN_M_TWB	/* Get level 1 table entry address */
-
-	/* If we are faulting a kernel address, we have to use the
-	 * kernel page tables.
-	 */
-	andi.	r11, r10, 0x0800
-	beq	3f
-	lis	r11, swapper_pg_dir@h
-	ori	r11, r11, swapper_pg_dir@l
-	rlwimi	r10, r11, 0, 2, 19
-3:
-	lwz	r11, 0(r10)	/* Get the level 1 entry */
-	rlwinm.	r10, r11,0,0,19	/* Extract page descriptor page address */
-	beq	2f		/* If zero, bail */
-
-	/* We have a pte table, so fetch the pte from the table.
-	 */
-	ori	r11, r11, 1		/* Set valid bit in physical L2 page */
-	DO_8xx_CPU6(0x3b80, r3)
-	mtspr	SPRN_MD_TWC, r11		/* Load pte table base address */
-	mfspr	r11, SPRN_MD_TWC		/* ....and get the pte address */
-	lwz	r10, 0(r11)		/* Get the pte */
-
-	andi.	r11, r10, _PAGE_RW	/* Is it writeable? */
-	beq	2f			/* Bail out if not */
-
-	/* Update 'changed', among others.
-	*/
-#ifdef CONFIG_SWAP
-	ori	r10, r10, _PAGE_DIRTY|_PAGE_HWWRITE
-	/* do not set the _PAGE_ACCESSED bit of a non-present page */
-	andi.	r11, r10, _PAGE_PRESENT
-	beq	4f
-	ori	r10, r10, _PAGE_ACCESSED
-4:
-#else
-	ori	r10, r10, _PAGE_DIRTY|_PAGE_ACCESSED|_PAGE_HWWRITE
-#endif
-	mfspr	r11, SPRN_MD_TWC		/* Get pte address again */
-	stw	r10, 0(r11)		/* and update pte in table */
-
-	/* The Linux PTE won't go exactly into the MMU TLB.
-	 * Software indicator bits 21, 22 and 28 must be clear.
-	 * Software indicator bits 24, 25, 26, and 27 must be
-	 * set.  All other Linux PTE bits control the behavior
-	 * of the MMU.
-	 */
-	li	r11, 0x00f0
-	rlwimi	r10, r11, 0, 24, 28	/* Set 24-27, clear 28 */
-	DO_8xx_CPU6(0x3d80, r3)
-	mtspr	SPRN_MD_RPN, r10	/* Update TLB entry */
-
-	mfspr	r10, SPRN_M_TW	/* Restore registers */
-	lwz	r11, 0(r0)
-	mtcr	r11
-	lwz	r11, 4(r0)
-#ifdef CONFIG_8xx_CPU6
-	lwz	r3, 8(r0)
-#endif
-	rfi
-2:
+	cmpwi	cr0, r10, 0x00f0
+	beq-	FixupDAR	/* must be a buggy dcbX, icbi insn. */
+DARFixed:/* Return from dcbx instruction bug workaround, r10 holds value of DAR */
 	mfspr	r10, SPRN_M_TW	/* Restore registers */
 	lwz	r11, 0(r0)
 	mtcr	r11
@@ -588,6 +533,140 @@ DataTLBError:
 
 	. = 0x2000
 
+/* This is the procedure to calculate the data EA for buggy dcbx,dcbi instructions
+ * by decoding the registers used by the dcbx instruction and adding them.
+ * DAR is set to the calculated address and r10 also holds the EA on exit.
+ */
+ /* define if you don't want to use self modifying code */
+#define NO_SELF_MODIFYING_CODE
+FixupDAR:/* Entry point for dcbx workaround. */
+	/* fetch instruction from memory. */
+	mfspr	r10, SPRN_SRR0
+	DO_8xx_CPU6(0x3780, r3)
+	mtspr	SPRN_MD_EPN, r10
+	mfspr	r11, SPRN_M_TWB	/* Get level 1 table entry address */
+	cmplwi	cr0, r11, 0x0800
+	blt-	3f		/* Branch if user space */
+	lis	r11, (swapper_pg_dir-PAGE_OFFSET)@h
+	ori	r11, r11, (swapper_pg_dir-PAGE_OFFSET)@l
+	rlwimi	r11, r10, 32-20, 0xffc /* r11 = r11&~0xffc|(r10>>20)&0xffc */
+3:	lwz	r11, 0(r11)	/* Get the level 1 entry */
+	DO_8xx_CPU6(0x3b80, r3)
+	mtspr	SPRN_MD_TWC, r11	/* Load pte table base address */
+	mfspr	r11, SPRN_MD_TWC	/* ....and get the pte address */
+	lwz	r11, 0(r11)	/* Get the pte */
+	/* concat physical page address(r11) and page offset(r10) */
+	rlwimi	r11, r10, 0, 20, 31
+	lwz	r11,0(r11)
+/* Check if it really is a dcbx instruction. */
+/* dcbt and dcbtst does not generate DTLB Misses/Errors,
+ * no need to include them here */
+	srwi	r10, r11, 26	/* check if major OP code is 31 */
+	cmpwi	cr0, r10, 31
+	bne-	141f
+	rlwinm	r10, r11, 0, 21, 30
+	cmpwi	cr0, r10, 2028	/* Is dcbz? */
+	beq+	142f
+	cmpwi	cr0, r10, 940	/* Is dcbi? */
+	beq+	142f
+	cmpwi	cr0, r10, 108	/* Is dcbst? */
+	beq+	144f		/* Fix up store bit! */
+	cmpwi	cr0, r10, 172	/* Is dcbf? */
+	beq+	142f
+	cmpwi	cr0, r10, 1964	/* Is icbi? */
+	beq+	142f
+141:	mfspr	r10, SPRN_DAR	/* r10 must hold DAR at exit */
+	b	DARFixed	/* Nope, go back to normal TLB processing */
+
+144:	mfspr	r10, SPRN_DSISR
+	rlwinm	r10, r10,0,7,5	/* Clear store bit for buggy dcbst insn */
+	mtspr	SPRN_DSISR, r10
+142:	/* continue, it was a dcbx, dcbi instruction. */
+#ifdef CONFIG_8xx_CPU6
+	lwz	r3, 8(r0)	/* restore r3 from memory */
+#endif
+#ifndef NO_SELF_MODIFYING_CODE
+	andis.	r10,r11,0x1f	/* test if reg RA is r0 */
+	li	r10,modified_instr@l
+	dcbtst	r0,r10		/* touch for store */
+	rlwinm	r11,r11,0,0,20	/* Zero lower 10 bits */
+	oris	r11,r11,640	/* Transform instr. to a "add r10,RA,RB" */
+	ori	r11,r11,532
+	stw	r11,0(r10)	/* store add/and instruction */
+	dcbf	0,r10		/* flush new instr. to memory. */
+	icbi	0,r10		/* invalidate instr. cache line */
+	lwz	r11, 4(r0)	/* restore r11 from memory */
+	mfspr	r10, SPRN_M_TW	/* restore r10 from M_TW */
+	isync			/* Wait until new instr is loaded from memory */
+modified_instr:
+	.space	4		/* this is where the add instr. is stored */
+	bne+	143f
+	subf	r10,r0,r10	/* r10=r10-r0, only if reg RA is r0 */
+143:	mtdar	r10		/* store faulting EA in DAR */
+	b	DARFixed	/* Go back to normal TLB handling */
+#else
+	mfctr	r10
+	mtdar	r10			/* save ctr reg in DAR */
+	rlwinm	r10, r11, 24, 24, 28	/* offset into jump table for reg RB */
+	addi	r10, r10, 150f@l	/* add start of table */
+	mtctr	r10			/* load ctr with jump address */
+	xor	r10, r10, r10		/* sum starts at zero */
+	bctr				/* jump into table */
+150:
+	add	r10, r10, r0	;b	151f
+	add	r10, r10, r1	;b	151f
+	add	r10, r10, r2	;b	151f
+	add	r10, r10, r3	;b	151f
+	add	r10, r10, r4	;b	151f
+	add	r10, r10, r5	;b	151f
+	add	r10, r10, r6	;b	151f
+	add	r10, r10, r7	;b	151f
+	add	r10, r10, r8	;b	151f
+	add	r10, r10, r9	;b	151f
+	mtctr	r11	;b	154f	/* r10 needs special handling */
+	mtctr	r11	;b	153f	/* r11 needs special handling */
+	add	r10, r10, r12	;b	151f
+	add	r10, r10, r13	;b	151f
+	add	r10, r10, r14	;b	151f
+	add	r10, r10, r15	;b	151f
+	add	r10, r10, r16	;b	151f
+	add	r10, r10, r17	;b	151f
+	add	r10, r10, r18	;b	151f
+	add	r10, r10, r19	;b	151f
+	add	r10, r10, r20	;b	151f
+	add	r10, r10, r21	;b	151f
+	add	r10, r10, r22	;b	151f
+	add	r10, r10, r23	;b	151f
+	add	r10, r10, r24	;b	151f
+	add	r10, r10, r25	;b	151f
+	add	r10, r10, r26	;b	151f
+	add	r10, r10, r27	;b	151f
+	add	r10, r10, r28	;b	151f
+	add	r10, r10, r29	;b	151f
+	add	r10, r10, r30	;b	151f
+	add	r10, r10, r31
+151:
+	rlwinm. r11,r11,19,24,28	/* offset into jump table for reg RA */
+	beq	152f			/* if reg RA is zero, don't add it */
+	addi	r11, r11, 150b@l	/* add start of table */
+	mtctr	r11			/* load ctr with jump address */
+	rlwinm	r11,r11,0,16,10		/* make sure we don't execute this more than once */
+	bctr				/* jump into table */
+152:
+	mfdar	r11
+	mtctr	r11			/* restore ctr reg from DAR */
+	mtdar	r10			/* save fault EA to DAR */
+	b	DARFixed		/* Go back to normal TLB handling */
+
+	/* special handling for r10,r11 since these are modified already */
+153:	lwz	r11, 4(r0)	/* load r11 from memory */
+	b	155f
+154:	mfspr	r11, SPRN_M_TW	/* load r10 from M_TW */
+155:	add	r10, r10, r11	/* add it */
+	mfctr	r11		/* restore r11 */
+	b	151b
+#endif
+
 	.globl	giveup_fpu
 giveup_fpu:
 	blr
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 975788ca05d2..7f4bd7f3b6af 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -944,28 +944,6 @@ _GLOBAL(__setup_e500mc_ivors)
 	blr
 
 /*
- * extern void loadcam_entry(unsigned int index)
- *
- * Load TLBCAM[index] entry in to the L2 CAM MMU
- */
-_GLOBAL(loadcam_entry)
-	lis	r4,TLBCAM@ha
-	addi	r4,r4,TLBCAM@l
-	mulli	r5,r3,TLBCAM_SIZE
-	add	r3,r5,r4
-	lwz	r4,0(r3)
-	mtspr	SPRN_MAS0,r4
-	lwz	r4,4(r3)
-	mtspr	SPRN_MAS1,r4
-	lwz	r4,8(r3)
-	mtspr	SPRN_MAS2,r4
-	lwz	r4,12(r3)
-	mtspr	SPRN_MAS3,r4
-	tlbwe
-	isync
-	blr
-
-/*
  * extern void giveup_altivec(struct task_struct *prev)
  *
  * The e500 core does not have an AltiVec unit.
diff --git a/arch/powerpc/kernel/io.c b/arch/powerpc/kernel/io.c
index 1882bf419fa6..8dc7547c2377 100644
--- a/arch/powerpc/kernel/io.c
+++ b/arch/powerpc/kernel/io.c
@@ -161,7 +161,7 @@ void _memcpy_fromio(void *dest, const volatile void __iomem *src,
 		dest++;
 		n--;
 	}
-	while(n > 4) {
+	while(n >= 4) {
 		*((u32 *)dest) = *((volatile u32 *)vsrc);
 		eieio();
 		vsrc += 4;
@@ -190,7 +190,7 @@ void _memcpy_toio(volatile void __iomem *dest, const void *src, unsigned long n)
 		vdest++;
 		n--;
 	}
-	while(n > 4) {
+	while(n >= 4) {
 		*((volatile u32 *)vdest) = *((volatile u32 *)src);
 		src += 4;
 		vdest += 4;
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 02a334662cc0..f6dca4f4b295 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -87,7 +87,10 @@ extern int tau_interrupts(int);
 #endif /* CONFIG_PPC32 */
 
 #ifdef CONFIG_PPC64
+
+#ifndef CONFIG_SPARSE_IRQ
 EXPORT_SYMBOL(irq_desc);
+#endif
 
 int distribute_irqs = 1;
 
@@ -189,33 +192,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "CPU%d       ", j);
 		seq_putc(p, '\n');
-	}
-
-	if (i < NR_IRQS) {
-		desc = get_irq_desc(i);
-		spin_lock_irqsave(&desc->lock, flags);
-		action = desc->action;
-		if (!action || !action->handler)
-			goto skip;
-		seq_printf(p, "%3d: ", i);
-#ifdef CONFIG_SMP
-		for_each_online_cpu(j)
-			seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
-#else
-		seq_printf(p, "%10u ", kstat_irqs(i));
-#endif /* CONFIG_SMP */
-		if (desc->chip)
-			seq_printf(p, " %s ", desc->chip->typename);
-		else
-			seq_puts(p, "  None      ");
-		seq_printf(p, "%s", (desc->status & IRQ_LEVEL) ? "Level " : "Edge  ");
-		seq_printf(p, "    %s", action->name);
-		for (action = action->next; action; action = action->next)
-			seq_printf(p, ", %s", action->name);
-		seq_putc(p, '\n');
-skip:
-		spin_unlock_irqrestore(&desc->lock, flags);
-	} else if (i == NR_IRQS) {
+	} else if (i == nr_irqs) {
 #if defined(CONFIG_PPC32) && defined(CONFIG_TAU_INT)
 		if (tau_initialized){
 			seq_puts(p, "TAU: ");
@@ -225,30 +202,68 @@ skip:
 		}
 #endif /* CONFIG_PPC32 && CONFIG_TAU_INT*/
 		seq_printf(p, "BAD: %10u\n", ppc_spurious_interrupts);
+
+		return 0;
 	}
+
+	desc = irq_to_desc(i);
+	if (!desc)
+		return 0;
+
+	spin_lock_irqsave(&desc->lock, flags);
+
+	action = desc->action;
+	if (!action || !action->handler)
+		goto skip;
+
+	seq_printf(p, "%3d: ", i);
+#ifdef CONFIG_SMP
+	for_each_online_cpu(j)
+		seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
+#else
+	seq_printf(p, "%10u ", kstat_irqs(i));
+#endif /* CONFIG_SMP */
+
+	if (desc->chip)
+		seq_printf(p, " %s ", desc->chip->name);
+	else
+		seq_puts(p, "  None      ");
+
+	seq_printf(p, "%s", (desc->status & IRQ_LEVEL) ? "Level " : "Edge  ");
+	seq_printf(p, "    %s", action->name);
+
+	for (action = action->next; action; action = action->next)
+		seq_printf(p, ", %s", action->name);
+	seq_putc(p, '\n');
+
+skip:
+	spin_unlock_irqrestore(&desc->lock, flags);
+
 	return 0;
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
 void fixup_irqs(cpumask_t map)
 {
+	struct irq_desc *desc;
 	unsigned int irq;
 	static int warned;
 
 	for_each_irq(irq) {
 		cpumask_t mask;
 
-		if (irq_desc[irq].status & IRQ_PER_CPU)
+		desc = irq_to_desc(irq);
+		if (desc && desc->status & IRQ_PER_CPU)
 			continue;
 
-		cpumask_and(&mask, irq_desc[irq].affinity, &map);
+		cpumask_and(&mask, desc->affinity, &map);
 		if (any_online_cpu(mask) == NR_CPUS) {
 			printk("Breaking affinity for irq %i\n", irq);
 			mask = map;
 		}
-		if (irq_desc[irq].chip->set_affinity)
-			irq_desc[irq].chip->set_affinity(irq, &mask);
-		else if (irq_desc[irq].action && !(warned++))
+		if (desc->chip->set_affinity)
+			desc->chip->set_affinity(irq, &mask);
+		else if (desc->action && !(warned++))
 			printk("Cannot set affinity for irq %i\n", irq);
 	}
 
@@ -275,7 +290,7 @@ static inline void handle_one_irq(unsigned int irq)
 		return;
 	}
 
-	desc = irq_desc + irq;
+	desc = irq_to_desc(irq);
 	saved_sp_limit = current->thread.ksp_limit;
 
 	irqtp->task = curtp->task;
@@ -541,7 +556,7 @@ struct irq_host *irq_alloc_host(struct device_node *of_node,
 			smp_wmb();
 
 			/* Clear norequest flags */
-			get_irq_desc(i)->status &= ~IRQ_NOREQUEST;
+			irq_to_desc(i)->status &= ~IRQ_NOREQUEST;
 
 			/* Legacy flags are left to default at this point,
 			 * one can then use irq_create_mapping() to
@@ -607,8 +622,16 @@ void irq_set_virq_count(unsigned int count)
 static int irq_setup_virq(struct irq_host *host, unsigned int virq,
 			    irq_hw_number_t hwirq)
 {
+	struct irq_desc *desc;
+
+	desc = irq_to_desc_alloc_node(virq, 0);
+	if (!desc) {
+		pr_debug("irq: -> allocating desc failed\n");
+		goto error;
+	}
+
 	/* Clear IRQ_NOREQUEST flag */
-	get_irq_desc(virq)->status &= ~IRQ_NOREQUEST;
+	desc->status &= ~IRQ_NOREQUEST;
 
 	/* map it */
 	smp_wmb();
@@ -617,11 +640,14 @@ static int irq_setup_virq(struct irq_host *host, unsigned int virq,
 
 	if (host->ops->map(host, virq, hwirq)) {
 		pr_debug("irq: -> mapping failed, freeing\n");
-		irq_free_virt(virq, 1);
-		return -1;
+		goto error;
 	}
 
 	return 0;
+
+error:
+	irq_free_virt(virq, 1);
+	return -1;
 }
 
 unsigned int irq_create_direct_mapping(struct irq_host *host)
@@ -705,7 +731,7 @@ unsigned int irq_create_mapping(struct irq_host *host,
 EXPORT_SYMBOL_GPL(irq_create_mapping);
 
 unsigned int irq_create_of_mapping(struct device_node *controller,
-				   u32 *intspec, unsigned int intsize)
+				   const u32 *intspec, unsigned int intsize)
 {
 	struct irq_host *host;
 	irq_hw_number_t hwirq;
@@ -738,7 +764,7 @@ unsigned int irq_create_of_mapping(struct device_node *controller,
 
 	/* Set type if specified and different than the current one */
 	if (type != IRQ_TYPE_NONE &&
-	    type != (get_irq_desc(virq)->status & IRQF_TRIGGER_MASK))
+	    type != (irq_to_desc(virq)->status & IRQF_TRIGGER_MASK))
 		set_irq_type(virq, type);
 	return virq;
 }
@@ -810,7 +836,7 @@ void irq_dispose_mapping(unsigned int virq)
 	irq_map[virq].hwirq = host->inval_irq;
 
 	/* Set some flags */
-	get_irq_desc(virq)->status |= IRQ_NOREQUEST;
+	irq_to_desc(virq)->status |= IRQ_NOREQUEST;
 
 	/* Free it */
 	irq_free_virt(virq, 1);
@@ -1002,12 +1028,24 @@ void irq_free_virt(unsigned int virq, unsigned int count)
 	spin_unlock_irqrestore(&irq_big_lock, flags);
 }
 
-void irq_early_init(void)
+int arch_early_irq_init(void)
 {
-	unsigned int i;
+	struct irq_desc *desc;
+	int i;
+
+	for (i = 0; i < NR_IRQS; i++) {
+		desc = irq_to_desc(i);
+		if (desc)
+			desc->status |= IRQ_NOREQUEST;
+	}
 
-	for (i = 0; i < NR_IRQS; i++)
-		get_irq_desc(i)->status |= IRQ_NOREQUEST;
+	return 0;
+}
+
+int arch_init_chip_data(struct irq_desc *desc, int node)
+{
+	desc->status |= IRQ_NOREQUEST;
+	return 0;
 }
 
 /* We need to create the radix trees late */
@@ -1069,16 +1107,19 @@ static int virq_debug_show(struct seq_file *m, void *private)
 	seq_printf(m, "%-5s  %-7s  %-15s  %s\n", "virq", "hwirq",
 		      "chip name", "host name");
 
-	for (i = 1; i < NR_IRQS; i++) {
-		desc = get_irq_desc(i);
+	for (i = 1; i < nr_irqs; i++) {
+		desc = irq_to_desc(i);
+		if (!desc)
+			continue;
+
 		spin_lock_irqsave(&desc->lock, flags);
 
 		if (desc->action && desc->action->handler) {
 			seq_printf(m, "%5d  ", i);
 			seq_printf(m, "0x%05lx  ", virq_to_hw(i));
 
-			if (desc->chip && desc->chip->typename)
-				p = desc->chip->typename;
+			if (desc->chip && desc->chip->name)
+				p = desc->chip->name;
 			else
 				p = none;
 			seq_printf(m, "%-15s  ", p);
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index ed0ac4e4b8d8..79a00bb9c64c 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -781,9 +781,9 @@ static int __init lparcfg_init(void)
 			!firmware_has_feature(FW_FEATURE_ISERIES))
 		mode |= S_IWUSR;
 
-	ent = proc_create("ppc64/lparcfg", mode, NULL, &lparcfg_fops);
+	ent = proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops);
 	if (!ent) {
-		printk(KERN_ERR "Failed to create ppc64/lparcfg\n");
+		printk(KERN_ERR "Failed to create powerpc/lparcfg\n");
 		return -EIO;
 	}
 
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index da9c0c4c10f3..8649f536f8df 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -502,15 +502,7 @@ _GLOBAL(clear_pages)
 	li	r0,PAGE_SIZE/L1_CACHE_BYTES
 	slw	r0,r0,r4
 	mtctr	r0
-#ifdef CONFIG_8xx
-	li	r4, 0
-1:	stw	r4, 0(r3)
-	stw	r4, 4(r3)
-	stw	r4, 8(r3)
-	stw	r4, 12(r3)
-#else
 1:	dcbz	0,r3
-#endif
 	addi	r3,r3,L1_CACHE_BYTES
 	bdnz	1b
 	blr
@@ -535,15 +527,6 @@ _GLOBAL(copy_page)
 	addi	r3,r3,-4
 	addi	r4,r4,-4
 
-#ifdef CONFIG_8xx
-	/* don't use prefetch on 8xx */
-    	li	r0,4096/L1_CACHE_BYTES
-	mtctr	r0
-1:	COPY_16_BYTES
-	bdnz	1b
-	blr
-
-#else	/* not 8xx, we can prefetch */
 	li	r5,4
 
 #if MAX_COPY_PREFETCH > 1
@@ -584,7 +567,6 @@ _GLOBAL(copy_page)
 	li	r0,MAX_COPY_PREFETCH
 	li	r11,4
 	b	2b
-#endif	/* CONFIG_8xx */
 
 /*
  * void atomic_clear_mask(atomic_t mask, atomic_t *addr)
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 0ed31f220482..ad461e735aec 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -139,8 +139,8 @@ out:
 
 }
 
-static int dev_nvram_ioctl(struct inode *inode, struct file *file,
-	unsigned int cmd, unsigned long arg)
+static long dev_nvram_ioctl(struct file *file, unsigned int cmd,
+			    unsigned long arg)
 {
 	switch(cmd) {
 #ifdef CONFIG_PPC_PMAC
@@ -169,11 +169,11 @@ static int dev_nvram_ioctl(struct inode *inode, struct file *file,
 }
 
 const struct file_operations nvram_fops = {
-	.owner =	THIS_MODULE,
-	.llseek =	dev_nvram_llseek,
-	.read =		dev_nvram_read,
-	.write =	dev_nvram_write,
-	.ioctl =	dev_nvram_ioctl,
+	.owner		= THIS_MODULE,
+	.llseek		= dev_nvram_llseek,
+	.read		= dev_nvram_read,
+	.write		= dev_nvram_write,
+	.unlocked_ioctl	= dev_nvram_ioctl,
 };
 
 static struct miscdevice nvram_dev = {
@@ -184,7 +184,7 @@ static struct miscdevice nvram_dev = {
 
 
 #ifdef DEBUG_NVRAM
-static void nvram_print_partitions(char * label)
+static void __init nvram_print_partitions(char * label)
 {
 	struct list_head * p;
 	struct nvram_partition * tmp_part;
@@ -202,7 +202,7 @@ static void nvram_print_partitions(char * label)
 #endif
 
 
-static int nvram_write_header(struct nvram_partition * part)
+static int __init nvram_write_header(struct nvram_partition * part)
 {
 	loff_t tmp_index;
 	int rc;
@@ -214,7 +214,7 @@ static int nvram_write_header(struct nvram_partition * part)
 }
 
 
-static unsigned char nvram_checksum(struct nvram_header *p)
+static unsigned char __init nvram_checksum(struct nvram_header *p)
 {
 	unsigned int c_sum, c_sum2;
 	unsigned short *sp = (unsigned short *)p->name; /* assume 6 shorts */
@@ -228,32 +228,7 @@ static unsigned char nvram_checksum(struct nvram_header *p)
 	return c_sum;
 }
 
-
-/*
- * Find an nvram partition, sig can be 0 for any
- * partition or name can be NULL for any name, else
- * tries to match both
- */
-struct nvram_partition *nvram_find_partition(int sig, const char *name)
-{
-	struct nvram_partition * part;
-	struct list_head * p;
-
-	list_for_each(p, &nvram_part->partition) {
-		part = list_entry(p, struct nvram_partition, partition);
-
-		if (sig && part->header.signature != sig)
-			continue;
-		if (name && 0 != strncmp(name, part->header.name, 12))
-			continue;
-		return part; 
-	}
-	return NULL;
-}
-EXPORT_SYMBOL(nvram_find_partition);
-
-
-static int nvram_remove_os_partition(void)
+static int __init nvram_remove_os_partition(void)
 {
 	struct list_head *i;
 	struct list_head *j;
@@ -319,7 +294,7 @@ static int nvram_remove_os_partition(void)
  * Will create a partition starting at the first free
  * space found if space has enough room.
  */
-static int nvram_create_os_partition(void)
+static int __init nvram_create_os_partition(void)
 {
 	struct nvram_partition *part;
 	struct nvram_partition *new_part;
@@ -422,7 +397,7 @@ static int nvram_create_os_partition(void)
  * 5.) If the max chunk cannot be allocated then try finding a chunk
  * that will satisfy the minum needed (NVRAM_MIN_REQ).
  */
-static int nvram_setup_partition(void)
+static int __init nvram_setup_partition(void)
 {
 	struct list_head * p;
 	struct nvram_partition * part;
@@ -480,7 +455,7 @@ static int nvram_setup_partition(void)
 }
 
 
-static int nvram_scan_partitions(void)
+static int __init nvram_scan_partitions(void)
 {
 	loff_t cur_index = 0;
 	struct nvram_header phead;
@@ -706,6 +681,9 @@ int nvram_clear_error_log(void)
 	int clear_word = ERR_FLAG_ALREADY_LOGGED;
 	int rc;
 
+	if (nvram_error_log_index == -1)
+		return -1;
+
 	tmp_index = nvram_error_log_index;
 	
 	rc = ppc_md.nvram_write((char *)&clear_word, sizeof(int), &tmp_index);
diff --git a/arch/powerpc/kernel/perf_callchain.c b/arch/powerpc/kernel/perf_callchain.c
index 0a03cf70d247..936f04dbfc6f 100644
--- a/arch/powerpc/kernel/perf_callchain.c
+++ b/arch/powerpc/kernel/perf_callchain.c
@@ -119,13 +119,6 @@ static void perf_callchain_kernel(struct pt_regs *regs,
 }
 
 #ifdef CONFIG_PPC64
-
-#ifdef CONFIG_HUGETLB_PAGE
-#define is_huge_psize(pagesize)	(HPAGE_SHIFT && mmu_huge_psizes[pagesize])
-#else
-#define is_huge_psize(pagesize)	0
-#endif
-
 /*
  * On 64-bit we don't want to invoke hash_page on user addresses from
  * interrupt context, so if the access faults, we read the page tables
@@ -135,7 +128,7 @@ static int read_user_stack_slow(void __user *ptr, void *ret, int nb)
 {
 	pgd_t *pgdir;
 	pte_t *ptep, pte;
-	int pagesize;
+	unsigned shift;
 	unsigned long addr = (unsigned long) ptr;
 	unsigned long offset;
 	unsigned long pfn;
@@ -145,17 +138,14 @@ static int read_user_stack_slow(void __user *ptr, void *ret, int nb)
 	if (!pgdir)
 		return -EFAULT;
 
-	pagesize = get_slice_psize(current->mm, addr);
+	ptep = find_linux_pte_or_hugepte(pgdir, addr, &shift);
+	if (!shift)
+		shift = PAGE_SHIFT;
 
 	/* align address to page boundary */
-	offset = addr & ((1ul << mmu_psize_defs[pagesize].shift) - 1);
+	offset = addr & ((1UL << shift) - 1);
 	addr -= offset;
 
-	if (is_huge_psize(pagesize))
-		ptep = huge_pte_offset(current->mm, addr);
-	else
-		ptep = find_linux_pte(pgdir, addr);
-
 	if (ptep == NULL)
 		return -EFAULT;
 	pte = *ptep;
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index c8b27bb4dbde..425451453e96 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -96,8 +96,6 @@ EXPORT_SYMBOL(copy_4K_page);
 EXPORT_SYMBOL(isa_io_base);
 EXPORT_SYMBOL(isa_mem_base);
 EXPORT_SYMBOL(pci_dram_offset);
-EXPORT_SYMBOL(pci_alloc_consistent);
-EXPORT_SYMBOL(pci_free_consistent);
 #endif /* CONFIG_PCI */
 
 EXPORT_SYMBOL(start_thread);
@@ -162,7 +160,6 @@ EXPORT_SYMBOL(screen_info);
 
 #ifdef CONFIG_PPC32
 EXPORT_SYMBOL(timer_interrupt);
-EXPORT_SYMBOL(irq_desc);
 EXPORT_SYMBOL(tb_ticks_per_jiffy);
 EXPORT_SYMBOL(cacheable_memcpy);
 EXPORT_SYMBOL(cacheable_memzero);
diff --git a/arch/powerpc/kernel/proc_ppc64.c b/arch/powerpc/kernel/proc_powerpc.c
index c647ddef40dc..1ed3b8d7981e 100644
--- a/arch/powerpc/kernel/proc_ppc64.c
+++ b/arch/powerpc/kernel/proc_powerpc.c
@@ -28,55 +28,7 @@
 #include <asm/uaccess.h>
 #include <asm/prom.h>
 
-static loff_t  page_map_seek( struct file *file, loff_t off, int whence);
-static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes,
-			      loff_t *ppos);
-static int     page_map_mmap( struct file *file, struct vm_area_struct *vma );
-
-static const struct file_operations page_map_fops = {
-	.llseek	= page_map_seek,
-	.read	= page_map_read,
-	.mmap	= page_map_mmap
-};
-
-/*
- * Create the ppc64 and ppc64/rtas directories early. This allows us to
- * assume that they have been previously created in drivers.
- */
-static int __init proc_ppc64_create(void)
-{
-	struct proc_dir_entry *root;
-
-	root = proc_mkdir("ppc64", NULL);
-	if (!root)
-		return 1;
-
-	if (!of_find_node_by_path("/rtas"))
-		return 0;
-
-	if (!proc_mkdir("rtas", root))
-		return 1;
-
-	if (!proc_symlink("rtas", NULL, "ppc64/rtas"))
-		return 1;
-
-	return 0;
-}
-core_initcall(proc_ppc64_create);
-
-static int __init proc_ppc64_init(void)
-{
-	struct proc_dir_entry *pde;
-
-	pde = proc_create_data("ppc64/systemcfg", S_IFREG|S_IRUGO, NULL,
-			       &page_map_fops, vdso_data);
-	if (!pde)
-		return 1;
-	pde->size = PAGE_SIZE;
-
-	return 0;
-}
-__initcall(proc_ppc64_init);
+#ifdef CONFIG_PPC64
 
 static loff_t page_map_seek( struct file *file, loff_t off, int whence)
 {
@@ -120,3 +72,55 @@ static int page_map_mmap( struct file *file, struct vm_area_struct *vma )
 	return 0;
 }
 
+static const struct file_operations page_map_fops = {
+	.llseek	= page_map_seek,
+	.read	= page_map_read,
+	.mmap	= page_map_mmap
+};
+
+
+static int __init proc_ppc64_init(void)
+{
+	struct proc_dir_entry *pde;
+
+	pde = proc_create_data("powerpc/systemcfg", S_IFREG|S_IRUGO, NULL,
+			       &page_map_fops, vdso_data);
+	if (!pde)
+		return 1;
+	pde->size = PAGE_SIZE;
+
+	return 0;
+}
+__initcall(proc_ppc64_init);
+
+#endif /* CONFIG_PPC64 */
+
+/*
+ * Create the ppc64 and ppc64/rtas directories early. This allows us to
+ * assume that they have been previously created in drivers.
+ */
+static int __init proc_ppc64_create(void)
+{
+	struct proc_dir_entry *root;
+
+	root = proc_mkdir("powerpc", NULL);
+	if (!root)
+		return 1;
+
+#ifdef CONFIG_PPC64
+	if (!proc_symlink("ppc64", NULL, "powerpc"))
+		pr_err("Failed to create link /proc/ppc64 -> /proc/powerpc\n");
+#endif
+
+	if (!of_find_node_by_path("/rtas"))
+		return 0;
+
+	if (!proc_mkdir("rtas", root))
+		return 1;
+
+	if (!proc_symlink("rtas", NULL, "powerpc/rtas"))
+		return 1;
+
+	return 0;
+}
+core_initcall(proc_ppc64_create);
diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
index 13011a96a977..a85117d5c9a4 100644
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -6,7 +6,7 @@
  *      as published by the Free Software Foundation; either version
  *      2 of the License, or (at your option) any later version.
  *
- * /proc/ppc64/rtas/firmware_flash interface
+ * /proc/powerpc/rtas/firmware_flash interface
  *
  * This file implements a firmware_flash interface to pump a firmware
  * image into the kernel.  At reboot time rtas_restart() will see the
@@ -740,7 +740,7 @@ static int __init rtas_flash_init(void)
 		return 1;
 	}
 
-	firmware_flash_pde = create_flash_pde("ppc64/rtas/"
+	firmware_flash_pde = create_flash_pde("powerpc/rtas/"
 					      FIRMWARE_FLASH_NAME,
 					      &rtas_flash_operations);
 	if (firmware_flash_pde == NULL) {
@@ -754,7 +754,7 @@ static int __init rtas_flash_init(void)
 	if (rc != 0)
 		goto cleanup;
 
-	firmware_update_pde = create_flash_pde("ppc64/rtas/"
+	firmware_update_pde = create_flash_pde("powerpc/rtas/"
 					       FIRMWARE_UPDATE_NAME,
 					       &rtas_flash_operations);
 	if (firmware_update_pde == NULL) {
@@ -768,7 +768,7 @@ static int __init rtas_flash_init(void)
 	if (rc != 0)
 		goto cleanup;
 
-	validate_pde = create_flash_pde("ppc64/rtas/" VALIDATE_FLASH_NAME,
+	validate_pde = create_flash_pde("powerpc/rtas/" VALIDATE_FLASH_NAME,
 			      		&validate_flash_operations);
 	if (validate_pde == NULL) {
 		rc = -ENOMEM;
@@ -781,7 +781,7 @@ static int __init rtas_flash_init(void)
 	if (rc != 0)
 		goto cleanup;
 
-	manage_pde = create_flash_pde("ppc64/rtas/" MANAGE_FLASH_NAME,
+	manage_pde = create_flash_pde("powerpc/rtas/" MANAGE_FLASH_NAME,
 				      &manage_flash_operations);
 	if (manage_pde == NULL) {
 		rc = -ENOMEM;
diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c
new file mode 100644
index 000000000000..2e4832ab2108
--- /dev/null
+++ b/arch/powerpc/kernel/rtasd.c
@@ -0,0 +1,539 @@
+/*
+ * Copyright (C) 2001 Anton Blanchard <anton@au.ibm.com>, IBM
+ *
+ * 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.
+ *
+ * Communication to userspace based on kernel/printk.c
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/poll.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/spinlock.h>
+#include <linux/cpu.h>
+#include <linux/workqueue.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/rtas.h>
+#include <asm/prom.h>
+#include <asm/nvram.h>
+#include <asm/atomic.h>
+#include <asm/machdep.h>
+
+
+static DEFINE_SPINLOCK(rtasd_log_lock);
+
+static DECLARE_WAIT_QUEUE_HEAD(rtas_log_wait);
+
+static char *rtas_log_buf;
+static unsigned long rtas_log_start;
+static unsigned long rtas_log_size;
+
+static int surveillance_timeout = -1;
+
+static unsigned int rtas_error_log_max;
+static unsigned int rtas_error_log_buffer_max;
+
+/* RTAS service tokens */
+static unsigned int event_scan;
+static unsigned int rtas_event_scan_rate;
+
+static int full_rtas_msgs = 0;
+
+/* Stop logging to nvram after first fatal error */
+static int logging_enabled; /* Until we initialize everything,
+                             * make sure we don't try logging
+                             * anything */
+static int error_log_cnt;
+
+/*
+ * Since we use 32 bit RTAS, the physical address of this must be below
+ * 4G or else bad things happen. Allocate this in the kernel data and
+ * make it big enough.
+ */
+static unsigned char logdata[RTAS_ERROR_LOG_MAX];
+
+static char *rtas_type[] = {
+	"Unknown", "Retry", "TCE Error", "Internal Device Failure",
+	"Timeout", "Data Parity", "Address Parity", "Cache Parity",
+	"Address Invalid", "ECC Uncorrected", "ECC Corrupted",
+};
+
+static char *rtas_event_type(int type)
+{
+	if ((type > 0) && (type < 11))
+		return rtas_type[type];
+
+	switch (type) {
+		case RTAS_TYPE_EPOW:
+			return "EPOW";
+		case RTAS_TYPE_PLATFORM:
+			return "Platform Error";
+		case RTAS_TYPE_IO:
+			return "I/O Event";
+		case RTAS_TYPE_INFO:
+			return "Platform Information Event";
+		case RTAS_TYPE_DEALLOC:
+			return "Resource Deallocation Event";
+		case RTAS_TYPE_DUMP:
+			return "Dump Notification Event";
+	}
+
+	return rtas_type[0];
+}
+
+/* To see this info, grep RTAS /var/log/messages and each entry
+ * will be collected together with obvious begin/end.
+ * There will be a unique identifier on the begin and end lines.
+ * This will persist across reboots.
+ *
+ * format of error logs returned from RTAS:
+ * bytes	(size)	: contents
+ * --------------------------------------------------------
+ * 0-7		(8)	: rtas_error_log
+ * 8-47		(40)	: extended info
+ * 48-51	(4)	: vendor id
+ * 52-1023 (vendor specific) : location code and debug data
+ */
+static void printk_log_rtas(char *buf, int len)
+{
+
+	int i,j,n = 0;
+	int perline = 16;
+	char buffer[64];
+	char * str = "RTAS event";
+
+	if (full_rtas_msgs) {
+		printk(RTAS_DEBUG "%d -------- %s begin --------\n",
+		       error_log_cnt, str);
+
+		/*
+		 * Print perline bytes on each line, each line will start
+		 * with RTAS and a changing number, so syslogd will
+		 * print lines that are otherwise the same.  Separate every
+		 * 4 bytes with a space.
+		 */
+		for (i = 0; i < len; i++) {
+			j = i % perline;
+			if (j == 0) {
+				memset(buffer, 0, sizeof(buffer));
+				n = sprintf(buffer, "RTAS %d:", i/perline);
+			}
+
+			if ((i % 4) == 0)
+				n += sprintf(buffer+n, " ");
+
+			n += sprintf(buffer+n, "%02x", (unsigned char)buf[i]);
+
+			if (j == (perline-1))
+				printk(KERN_DEBUG "%s\n", buffer);
+		}
+		if ((i % perline) != 0)
+			printk(KERN_DEBUG "%s\n", buffer);
+
+		printk(RTAS_DEBUG "%d -------- %s end ----------\n",
+		       error_log_cnt, str);
+	} else {
+		struct rtas_error_log *errlog = (struct rtas_error_log *)buf;
+
+		printk(RTAS_DEBUG "event: %d, Type: %s, Severity: %d\n",
+		       error_log_cnt, rtas_event_type(errlog->type),
+		       errlog->severity);
+	}
+}
+
+static int log_rtas_len(char * buf)
+{
+	int len;
+	struct rtas_error_log *err;
+
+	/* rtas fixed header */
+	len = 8;
+	err = (struct rtas_error_log *)buf;
+	if (err->extended_log_length) {
+
+		/* extended header */
+		len += err->extended_log_length;
+	}
+
+	if (rtas_error_log_max == 0)
+		rtas_error_log_max = rtas_get_error_log_max();
+
+	if (len > rtas_error_log_max)
+		len = rtas_error_log_max;
+
+	return len;
+}
+
+/*
+ * First write to nvram, if fatal error, that is the only
+ * place we log the info.  The error will be picked up
+ * on the next reboot by rtasd.  If not fatal, run the
+ * method for the type of error.  Currently, only RTAS
+ * errors have methods implemented, but in the future
+ * there might be a need to store data in nvram before a
+ * call to panic().
+ *
+ * XXX We write to nvram periodically, to indicate error has
+ * been written and sync'd, but there is a possibility
+ * that if we don't shutdown correctly, a duplicate error
+ * record will be created on next reboot.
+ */
+void pSeries_log_error(char *buf, unsigned int err_type, int fatal)
+{
+	unsigned long offset;
+	unsigned long s;
+	int len = 0;
+
+	pr_debug("rtasd: logging event\n");
+	if (buf == NULL)
+		return;
+
+	spin_lock_irqsave(&rtasd_log_lock, s);
+
+	/* get length and increase count */
+	switch (err_type & ERR_TYPE_MASK) {
+	case ERR_TYPE_RTAS_LOG:
+		len = log_rtas_len(buf);
+		if (!(err_type & ERR_FLAG_BOOT))
+			error_log_cnt++;
+		break;
+	case ERR_TYPE_KERNEL_PANIC:
+	default:
+		WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
+		spin_unlock_irqrestore(&rtasd_log_lock, s);
+		return;
+	}
+
+#ifdef CONFIG_PPC64
+	/* Write error to NVRAM */
+	if (logging_enabled && !(err_type & ERR_FLAG_BOOT))
+		nvram_write_error_log(buf, len, err_type, error_log_cnt);
+#endif /* CONFIG_PPC64 */
+
+	/*
+	 * rtas errors can occur during boot, and we do want to capture
+	 * those somewhere, even if nvram isn't ready (why not?), and even
+	 * if rtasd isn't ready. Put them into the boot log, at least.
+	 */
+	if ((err_type & ERR_TYPE_MASK) == ERR_TYPE_RTAS_LOG)
+		printk_log_rtas(buf, len);
+
+	/* Check to see if we need to or have stopped logging */
+	if (fatal || !logging_enabled) {
+		logging_enabled = 0;
+		WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
+		spin_unlock_irqrestore(&rtasd_log_lock, s);
+		return;
+	}
+
+	/* call type specific method for error */
+	switch (err_type & ERR_TYPE_MASK) {
+	case ERR_TYPE_RTAS_LOG:
+		offset = rtas_error_log_buffer_max *
+			((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK);
+
+		/* First copy over sequence number */
+		memcpy(&rtas_log_buf[offset], (void *) &error_log_cnt, sizeof(int));
+
+		/* Second copy over error log data */
+		offset += sizeof(int);
+		memcpy(&rtas_log_buf[offset], buf, len);
+
+		if (rtas_log_size < LOG_NUMBER)
+			rtas_log_size += 1;
+		else
+			rtas_log_start += 1;
+
+		WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
+		spin_unlock_irqrestore(&rtasd_log_lock, s);
+		wake_up_interruptible(&rtas_log_wait);
+		break;
+	case ERR_TYPE_KERNEL_PANIC:
+	default:
+		WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
+		spin_unlock_irqrestore(&rtasd_log_lock, s);
+		return;
+	}
+
+}
+
+static int rtas_log_open(struct inode * inode, struct file * file)
+{
+	return 0;
+}
+
+static int rtas_log_release(struct inode * inode, struct file * file)
+{
+	return 0;
+}
+
+/* This will check if all events are logged, if they are then, we
+ * know that we can safely clear the events in NVRAM.
+ * Next we'll sit and wait for something else to log.
+ */
+static ssize_t rtas_log_read(struct file * file, char __user * buf,
+			 size_t count, loff_t *ppos)
+{
+	int error;
+	char *tmp;
+	unsigned long s;
+	unsigned long offset;
+
+	if (!buf || count < rtas_error_log_buffer_max)
+		return -EINVAL;
+
+	count = rtas_error_log_buffer_max;
+
+	if (!access_ok(VERIFY_WRITE, buf, count))
+		return -EFAULT;
+
+	tmp = kmalloc(count, GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+
+	spin_lock_irqsave(&rtasd_log_lock, s);
+
+	/* if it's 0, then we know we got the last one (the one in NVRAM) */
+	while (rtas_log_size == 0) {
+		if (file->f_flags & O_NONBLOCK) {
+			spin_unlock_irqrestore(&rtasd_log_lock, s);
+			error = -EAGAIN;
+			goto out;
+		}
+
+		if (!logging_enabled) {
+			spin_unlock_irqrestore(&rtasd_log_lock, s);
+			error = -ENODATA;
+			goto out;
+		}
+#ifdef CONFIG_PPC64
+		nvram_clear_error_log();
+#endif /* CONFIG_PPC64 */
+
+		spin_unlock_irqrestore(&rtasd_log_lock, s);
+		error = wait_event_interruptible(rtas_log_wait, rtas_log_size);
+		if (error)
+			goto out;
+		spin_lock_irqsave(&rtasd_log_lock, s);
+	}
+
+	offset = rtas_error_log_buffer_max * (rtas_log_start & LOG_NUMBER_MASK);
+	memcpy(tmp, &rtas_log_buf[offset], count);
+
+	rtas_log_start += 1;
+	rtas_log_size -= 1;
+	spin_unlock_irqrestore(&rtasd_log_lock, s);
+
+	error = copy_to_user(buf, tmp, count) ? -EFAULT : count;
+out:
+	kfree(tmp);
+	return error;
+}
+
+static unsigned int rtas_log_poll(struct file *file, poll_table * wait)
+{
+	poll_wait(file, &rtas_log_wait, wait);
+	if (rtas_log_size)
+		return POLLIN | POLLRDNORM;
+	return 0;
+}
+
+static const struct file_operations proc_rtas_log_operations = {
+	.read =		rtas_log_read,
+	.poll =		rtas_log_poll,
+	.open =		rtas_log_open,
+	.release =	rtas_log_release,
+};
+
+static int enable_surveillance(int timeout)
+{
+	int error;
+
+	error = rtas_set_indicator(SURVEILLANCE_TOKEN, 0, timeout);
+
+	if (error == 0)
+		return 0;
+
+	if (error == -EINVAL) {
+		printk(KERN_DEBUG "rtasd: surveillance not supported\n");
+		return 0;
+	}
+
+	printk(KERN_ERR "rtasd: could not update surveillance\n");
+	return -1;
+}
+
+static void do_event_scan(void)
+{
+	int error;
+	do {
+		memset(logdata, 0, rtas_error_log_max);
+		error = rtas_call(event_scan, 4, 1, NULL,
+				  RTAS_EVENT_SCAN_ALL_EVENTS, 0,
+				  __pa(logdata), rtas_error_log_max);
+		if (error == -1) {
+			printk(KERN_ERR "event-scan failed\n");
+			break;
+		}
+
+		if (error == 0)
+			pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG, 0);
+
+	} while(error == 0);
+}
+
+static void rtas_event_scan(struct work_struct *w);
+DECLARE_DELAYED_WORK(event_scan_work, rtas_event_scan);
+
+/*
+ * Delay should be at least one second since some machines have problems if
+ * we call event-scan too quickly.
+ */
+static unsigned long event_scan_delay = 1*HZ;
+static int first_pass = 1;
+
+static void rtas_event_scan(struct work_struct *w)
+{
+	unsigned int cpu;
+
+	do_event_scan();
+
+	get_online_cpus();
+
+	cpu = next_cpu(smp_processor_id(), cpu_online_map);
+	if (cpu == NR_CPUS) {
+		cpu = first_cpu(cpu_online_map);
+
+		if (first_pass) {
+			first_pass = 0;
+			event_scan_delay = 30*HZ/rtas_event_scan_rate;
+
+			if (surveillance_timeout != -1) {
+				pr_debug("rtasd: enabling surveillance\n");
+				enable_surveillance(surveillance_timeout);
+				pr_debug("rtasd: surveillance enabled\n");
+			}
+		}
+	}
+
+	schedule_delayed_work_on(cpu, &event_scan_work,
+		__round_jiffies_relative(event_scan_delay, cpu));
+
+	put_online_cpus();
+}
+
+#ifdef CONFIG_PPC64
+static void retreive_nvram_error_log(void)
+{
+	unsigned int err_type ;
+	int rc ;
+
+	/* See if we have any error stored in NVRAM */
+	memset(logdata, 0, rtas_error_log_max);
+	rc = nvram_read_error_log(logdata, rtas_error_log_max,
+	                          &err_type, &error_log_cnt);
+	/* We can use rtas_log_buf now */
+	logging_enabled = 1;
+	if (!rc) {
+		if (err_type != ERR_FLAG_ALREADY_LOGGED) {
+			pSeries_log_error(logdata, err_type | ERR_FLAG_BOOT, 0);
+		}
+	}
+}
+#else /* CONFIG_PPC64 */
+static void retreive_nvram_error_log(void)
+{
+}
+#endif /* CONFIG_PPC64 */
+
+static void start_event_scan(void)
+{
+	printk(KERN_DEBUG "RTAS daemon started\n");
+	pr_debug("rtasd: will sleep for %d milliseconds\n",
+		 (30000 / rtas_event_scan_rate));
+
+	/* Retreive errors from nvram if any */
+	retreive_nvram_error_log();
+
+	schedule_delayed_work_on(first_cpu(cpu_online_map), &event_scan_work,
+				 event_scan_delay);
+}
+
+static int __init rtas_init(void)
+{
+	struct proc_dir_entry *entry;
+
+	if (!machine_is(pseries) && !machine_is(chrp))
+		return 0;
+
+	/* No RTAS */
+	event_scan = rtas_token("event-scan");
+	if (event_scan == RTAS_UNKNOWN_SERVICE) {
+		printk(KERN_INFO "rtasd: No event-scan on system\n");
+		return -ENODEV;
+	}
+
+	rtas_event_scan_rate = rtas_token("rtas-event-scan-rate");
+	if (rtas_event_scan_rate == RTAS_UNKNOWN_SERVICE) {
+		printk(KERN_ERR "rtasd: no rtas-event-scan-rate on system\n");
+		return -ENODEV;
+	}
+
+	/* Make room for the sequence number */
+	rtas_error_log_max = rtas_get_error_log_max();
+	rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int);
+
+	rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER);
+	if (!rtas_log_buf) {
+		printk(KERN_ERR "rtasd: no memory\n");
+		return -ENOMEM;
+	}
+
+	entry = proc_create("powerpc/rtas/error_log", S_IRUSR, NULL,
+			    &proc_rtas_log_operations);
+	if (!entry)
+		printk(KERN_ERR "Failed to create error_log proc entry\n");
+
+	start_event_scan();
+
+	return 0;
+}
+__initcall(rtas_init);
+
+static int __init surveillance_setup(char *str)
+{
+	int i;
+
+	/* We only do surveillance on pseries */
+	if (!machine_is(pseries))
+		return 0;
+
+	if (get_option(&str,&i)) {
+		if (i >= 0 && i <= 255)
+			surveillance_timeout = i;
+	}
+
+	return 1;
+}
+__setup("surveillance=", surveillance_setup);
+
+static int __init rtasmsgs_setup(char *str)
+{
+	if (strcmp(str, "on") == 0)
+		full_rtas_msgs = 1;
+	else if (strcmp(str, "off") == 0)
+		full_rtas_msgs = 0;
+
+	return 1;
+}
+__setup("rtasmsgs=", rtasmsgs_setup);
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index df2c9e932b37..6568406b2a30 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -356,11 +356,6 @@ void __init setup_system(void)
 	 */
 	initialize_cache_info();
 
-	/*
-	 * Initialize irq remapping subsystem
-	 */
-	irq_early_init();
-
 #ifdef CONFIG_PPC_RTAS
 	/*
 	 * Initialize RTAS if available
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 9b86a74d2815..97196eefef3e 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -218,6 +218,9 @@ void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *))
 
 static void stop_this_cpu(void *dummy)
 {
+	/* Remove this CPU */
+	set_cpu_online(smp_processor_id(), false);
+
 	local_irq_disable();
 	while (1)
 		;
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 956ab33fd73f..e235e52dc4fe 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -461,6 +461,25 @@ static void unregister_cpu_online(unsigned int cpu)
 
 	cacheinfo_cpu_offline(cpu);
 }
+
+#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
+ssize_t arch_cpu_probe(const char *buf, size_t count)
+{
+	if (ppc_md.cpu_probe)
+		return ppc_md.cpu_probe(buf, count);
+
+	return -EINVAL;
+}
+
+ssize_t arch_cpu_release(const char *buf, size_t count)
+{
+	if (ppc_md.cpu_release)
+		return ppc_md.cpu_release(buf, count);
+
+	return -EINVAL;
+}
+#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
+
 #endif /* CONFIG_HOTPLUG_CPU */
 
 static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 674800b242d6..9ba2cc88591d 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -269,6 +269,7 @@ void account_system_vtime(struct task_struct *tsk)
 	per_cpu(cputime_scaled_last_delta, smp_processor_id()) = deltascaled;
 	local_irq_restore(flags);
 }
+EXPORT_SYMBOL_GPL(account_system_vtime);
 
 /*
  * Transfer the user and system times accumulated in the paca
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 9d1f9354d6ca..804f0f30f227 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -198,28 +198,6 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
 	info.si_code = code;
 	info.si_addr = (void __user *) addr;
 	force_sig_info(signr, &info, current);
-
-	/*
-	 * Init gets no signals that it doesn't have a handler for.
-	 * That's all very well, but if it has caused a synchronous
-	 * exception and we ignore the resulting signal, it will just
-	 * generate the same exception over and over again and we get
-	 * nowhere.  Better to kill it and let the kernel panic.
-	 */
-	if (is_global_init(current)) {
-		__sighandler_t handler;
-
-		spin_lock_irq(&current->sighand->siglock);
-		handler = current->sighand->action[signr-1].sa.sa_handler;
-		spin_unlock_irq(&current->sighand->siglock);
-		if (handler == SIG_DFL) {
-			/* init has generated a synchronous exception
-			   and it doesn't have a handler for the signal */
-			printk(KERN_CRIT "init has generated signal %d "
-			       "but has no handler for it\n", signr);
-			do_exit(signr);
-		}
-	}
 }
 
 #ifdef CONFIG_PPC64
diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S
index 67b6916f0e94..fe460482fa68 100644
--- a/arch/powerpc/kernel/vector.S
+++ b/arch/powerpc/kernel/vector.S
@@ -58,7 +58,7 @@ _GLOBAL(load_up_altivec)
 	 * all 1's
 	 */
 	mfspr	r4,SPRN_VRSAVE
-	cmpdi	0,r4,0
+	cmpwi	0,r4,0
 	bne+	1f
 	li	r4,-1
 	mtspr	SPRN_VRSAVE,r4