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-rw-r--r--arch/powerpc/kernel/Makefile1
-rw-r--r--arch/powerpc/kernel/asm-offsets.c10
-rw-r--r--arch/powerpc/kernel/btext.c3
-rw-r--r--arch/powerpc/kernel/cpu_setup_44x.S5
-rw-r--r--arch/powerpc/kernel/cputable.c28
-rw-r--r--arch/powerpc/kernel/crash.c3
-rw-r--r--arch/powerpc/kernel/crash_dump.c3
-rw-r--r--arch/powerpc/kernel/entry_32.S30
-rw-r--r--arch/powerpc/kernel/entry_64.S30
-rw-r--r--arch/powerpc/kernel/head_32.S22
-rw-r--r--arch/powerpc/kernel/head_44x.S4
-rw-r--r--arch/powerpc/kernel/head_64.S69
-rw-r--r--arch/powerpc/kernel/head_booke.h33
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S44
-rw-r--r--arch/powerpc/kernel/ibmebus.c12
-rw-r--r--arch/powerpc/kernel/iommu.c4
-rw-r--r--arch/powerpc/kernel/irq.c18
-rw-r--r--arch/powerpc/kernel/isa-bridge.c6
-rw-r--r--arch/powerpc/kernel/lparcfg.c12
-rw-r--r--arch/powerpc/kernel/machine_kexec.c3
-rw-r--r--arch/powerpc/kernel/paca.c34
-rw-r--r--arch/powerpc/kernel/ppc32.h2
-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c7
-rw-r--r--arch/powerpc/kernel/process.c33
-rw-r--r--arch/powerpc/kernel/prom.c120
-rw-r--r--arch/powerpc/kernel/prom_init.c8
-rw-r--r--arch/powerpc/kernel/ptrace32.c27
-rw-r--r--arch/powerpc/kernel/rtas.c5
-rw-r--r--arch/powerpc/kernel/rtas_flash.c2
-rw-r--r--arch/powerpc/kernel/rtas_pci.c29
-rw-r--r--arch/powerpc/kernel/setup-common.c11
-rw-r--r--arch/powerpc/kernel/setup_32.c14
-rw-r--r--arch/powerpc/kernel/setup_64.c8
-rw-r--r--arch/powerpc/kernel/signal_32.c19
-rw-r--r--arch/powerpc/kernel/stacktrace.c47
-rw-r--r--arch/powerpc/kernel/sys_ppc32.c6
-rw-r--r--arch/powerpc/kernel/syscalls.c1
-rw-r--r--arch/powerpc/kernel/vdso.c3
-rw-r--r--arch/powerpc/kernel/vio.c10
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S51
40 files changed, 531 insertions, 246 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index b9dbfff9afe..ce1e8d24e74 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -67,6 +67,7 @@ obj-$(CONFIG_BOOTX_TEXT) += btext.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_PPC_UDBG_16550) += legacy_serial.o udbg_16550.o
+obj-$(CONFIG_STACKTRACE) += stacktrace.o
pci64-$(CONFIG_PPC64) += pci_dn.o isa-bridge.o
obj-$(CONFIG_PCI) += pci_$(CONFIG_WORD_SIZE).o $(pci64-y) \
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 4b749c41646..292c6d8db0e 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -26,8 +26,6 @@
#ifdef CONFIG_PPC64
#include <linux/time.h>
#include <linux/hardirq.h>
-#else
-#include <linux/ptrace.h>
#endif
#include <asm/io.h>
@@ -46,6 +44,9 @@
#include <asm/mmu.h>
#include <asm/hvcall.h>
#endif
+#ifdef CONFIG_PPC_ISERIES
+#include <asm/iseries/alpaca.h>
+#endif
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -60,7 +61,6 @@ int main(void)
DEFINE(AUDITCONTEXT, offsetof(struct task_struct, audit_context));
#else
DEFINE(THREAD_INFO, offsetof(struct task_struct, stack));
- DEFINE(PTRACE, offsetof(struct task_struct, ptrace));
#endif /* CONFIG_PPC64 */
DEFINE(KSP, offsetof(struct thread_struct, ksp));
@@ -80,7 +80,6 @@ int main(void)
DEFINE(PGDIR, offsetof(struct thread_struct, pgdir));
#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
DEFINE(THREAD_DBCR0, offsetof(struct thread_struct, dbcr0));
- DEFINE(PT_PTRACED, PT_PTRACED);
#endif
#ifdef CONFIG_SPE
DEFINE(THREAD_EVR0, offsetof(struct thread_struct, evr[0]));
@@ -325,6 +324,9 @@ int main(void)
DEFINE(PAGE_OFFSET_VSID, KERNEL_VSID(PAGE_OFFSET));
DEFINE(VMALLOC_START_ESID, GET_ESID(VMALLOC_START));
DEFINE(VMALLOC_START_VSID, KERNEL_VSID(VMALLOC_START));
+
+ /* alpaca */
+ DEFINE(ALPACA_SIZE, sizeof(struct alpaca));
#endif
DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE);
diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index 80e2eef05b2..9f937774549 100644
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -7,6 +7,7 @@
#include <linux/string.h>
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/lmb.h>
#include <asm/sections.h>
#include <asm/prom.h>
@@ -15,7 +16,7 @@
#include <asm/mmu.h>
#include <asm/pgtable.h>
#include <asm/io.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
#include <asm/processor.h>
#include <asm/udbg.h>
diff --git a/arch/powerpc/kernel/cpu_setup_44x.S b/arch/powerpc/kernel/cpu_setup_44x.S
index 6250443ab9c..5465e8de0e6 100644
--- a/arch/powerpc/kernel/cpu_setup_44x.S
+++ b/arch/powerpc/kernel/cpu_setup_44x.S
@@ -3,7 +3,7 @@
* Valentine Barshak <vbarshak@ru.mvista.com>
* MontaVista Software, Inc (c) 2007
*
- * Based on cpu_setup_6xx code by
+ * Based on cpu_setup_6xx code by
* Benjamin Herrenschmidt <benh@kernel.crashing.org>
*
* This program is free software; you can redistribute it and/or
@@ -32,6 +32,9 @@ _GLOBAL(__setup_cpu_440grx)
bl __fixup_440A_mcheck
mtlr r4
blr
+_GLOBAL(__setup_cpu_460ex)
+_GLOBAL(__setup_cpu_460gt)
+ b __init_fpu_44x
_GLOBAL(__setup_cpu_440gx)
_GLOBAL(__setup_cpu_440spe)
b __fixup_440A_mcheck
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 2a8f5cc5184..26ffb44e270 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -36,6 +36,8 @@ extern void __setup_cpu_440epx(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_440gx(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_440grx(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_440spe(unsigned long offset, struct cpu_spec* spec);
+extern void __setup_cpu_460ex(unsigned long offset, struct cpu_spec* spec);
+extern void __setup_cpu_460gt(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_603(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_604(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_750(unsigned long offset, struct cpu_spec* spec);
@@ -1397,6 +1399,30 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check = machine_check_440A,
.platform = "ppc440",
},
+ { /* 460EX */
+ .pvr_mask = 0xffff0002,
+ .pvr_value = 0x13020002,
+ .cpu_name = "460EX",
+ .cpu_features = CPU_FTRS_44X,
+ .cpu_user_features = COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
+ .icache_bsize = 32,
+ .dcache_bsize = 32,
+ .cpu_setup = __setup_cpu_460ex,
+ .machine_check = machine_check_440A,
+ .platform = "ppc440",
+ },
+ { /* 460GT */
+ .pvr_mask = 0xffff0002,
+ .pvr_value = 0x13020000,
+ .cpu_name = "460GT",
+ .cpu_features = CPU_FTRS_44X,
+ .cpu_user_features = COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
+ .icache_bsize = 32,
+ .dcache_bsize = 32,
+ .cpu_setup = __setup_cpu_460gt,
+ .machine_check = machine_check_440A,
+ .platform = "ppc440",
+ },
#endif /* CONFIG_44x */
#ifdef CONFIG_FSL_BOOKE
#ifdef CONFIG_E200
@@ -1512,7 +1538,7 @@ struct cpu_spec * __init identify_cpu(unsigned long offset, unsigned int pvr)
*t = *s;
*PTRRELOC(&cur_cpu_spec) = &the_cpu_spec;
#if defined(CONFIG_PPC64) || defined(CONFIG_BOOKE)
- /* ppc64 and booke expect identify_cpu to also call
+ /* ppc64 and booke expect identify_cpu to also call
* setup_cpu for that processor. I will consolidate
* that at a later time, for now, just use #ifdef.
* we also don't need to PTRRELOC the function pointer
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 571132ed12c..eae401de3f7 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -24,12 +24,13 @@
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/types.h>
+#include <linux/lmb.h>
#include <asm/processor.h>
#include <asm/machdep.h>
#include <asm/kexec.h>
#include <asm/kdump.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
#include <asm/firmware.h>
#include <asm/smp.h>
#include <asm/system.h>
diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index 29ff77c468a..9ee3c5278db 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -13,8 +13,9 @@
#include <linux/crash_dump.h>
#include <linux/bootmem.h>
+#include <linux/lmb.h>
#include <asm/kdump.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
#include <asm/firmware.h>
#include <asm/uaccess.h>
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 69a91bd4611..84c86863306 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -110,9 +110,9 @@ transfer_to_handler:
stw r11,PT_REGS(r12)
#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
/* Check to see if the dbcr0 register is set up to debug. Use the
- single-step bit to do this. */
+ internal debug mode bit to do this. */
lwz r12,THREAD_DBCR0(r12)
- andis. r12,r12,DBCR0_IC@h
+ andis. r12,r12,DBCR0_IDM@h
beq+ 3f
/* From user and task is ptraced - load up global dbcr0 */
li r12,-1 /* clear all pending debug events */
@@ -120,6 +120,12 @@ transfer_to_handler:
lis r11,global_dbcr0@ha
tophys(r11,r11)
addi r11,r11,global_dbcr0@l
+#ifdef CONFIG_SMP
+ rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
+ lwz r9,TI_CPU(r9)
+ slwi r9,r9,3
+ add r11,r11,r9
+#endif
lwz r12,0(r11)
mtspr SPRN_DBCR0,r12
lwz r12,4(r11)
@@ -238,10 +244,10 @@ ret_from_syscall:
stw r11,_CCR(r1)
syscall_exit_cont:
#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
- /* If the process has its own DBCR0 value, load it up. The single
- step bit tells us that dbcr0 should be loaded. */
+ /* If the process has its own DBCR0 value, load it up. The internal
+ debug mode bit tells us that dbcr0 should be loaded. */
lwz r0,THREAD+THREAD_DBCR0(r2)
- andis. r10,r0,DBCR0_IC@h
+ andis. r10,r0,DBCR0_IDM@h
bnel- load_dbcr0
#endif
#ifdef CONFIG_44x
@@ -666,10 +672,10 @@ user_exc_return: /* r10 contains MSR_KERNEL here */
restore_user:
#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
- /* Check whether this process has its own DBCR0 value. The single
- step bit tells us that dbcr0 should be loaded. */
+ /* Check whether this process has its own DBCR0 value. The internal
+ debug mode bit tells us that dbcr0 should be loaded. */
lwz r0,THREAD+THREAD_DBCR0(r2)
- andis. r10,r0,DBCR0_IC@h
+ andis. r10,r0,DBCR0_IDM@h
bnel- load_dbcr0
#endif
@@ -879,6 +885,12 @@ load_dbcr0:
mfspr r10,SPRN_DBCR0
lis r11,global_dbcr0@ha
addi r11,r11,global_dbcr0@l
+#ifdef CONFIG_SMP
+ rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
+ lwz r9,TI_CPU(r9)
+ slwi r9,r9,3
+ add r11,r11,r9
+#endif
stw r10,0(r11)
mtspr SPRN_DBCR0,r0
lwz r10,4(r11)
@@ -891,7 +903,7 @@ load_dbcr0:
.section .bss
.align 4
global_dbcr0:
- .space 8
+ .space 8*NR_CPUS
.previous
#endif /* !(CONFIG_4xx || CONFIG_BOOKE) */
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 148a3547c9a..c0db5b769e5 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -29,6 +29,8 @@
#include <asm/cputable.h>
#include <asm/firmware.h>
#include <asm/bug.h>
+#include <asm/ptrace.h>
+#include <asm/irqflags.h>
/*
* System calls.
@@ -39,7 +41,7 @@
/* This value is used to mark exception frames on the stack. */
exception_marker:
- .tc ID_72656773_68657265[TC],0x7265677368657265
+ .tc ID_EXC_MARKER[TC],STACK_FRAME_REGS_MARKER
.section ".text"
.align 7
@@ -88,6 +90,14 @@ system_call_common:
addi r9,r1,STACK_FRAME_OVERHEAD
ld r11,exception_marker@toc(r2)
std r11,-16(r9) /* "regshere" marker */
+#ifdef CONFIG_TRACE_IRQFLAGS
+ bl .trace_hardirqs_on
+ REST_GPR(0,r1)
+ REST_4GPRS(3,r1)
+ REST_2GPRS(7,r1)
+ addi r9,r1,STACK_FRAME_OVERHEAD
+ ld r12,_MSR(r1)
+#endif /* CONFIG_TRACE_IRQFLAGS */
li r10,1
stb r10,PACASOFTIRQEN(r13)
stb r10,PACAHARDIRQEN(r13)
@@ -102,7 +112,7 @@ BEGIN_FW_FTR_SECTION
b hardware_interrupt_entry
2:
END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
-#endif
+#endif /* CONFIG_PPC_ISERIES */
mfmsr r11
ori r11,r11,MSR_EE
mtmsrd r11,1
@@ -504,6 +514,10 @@ BEGIN_FW_FTR_SECTION
li r3,0
stb r3,PACASOFTIRQEN(r13) /* ensure we are soft-disabled */
+#ifdef CONFIG_TRACE_IRQFLAGS
+ bl .trace_hardirqs_off
+ mfmsr r10
+#endif
ori r10,r10,MSR_EE
mtmsrd r10 /* hard-enable again */
addi r3,r1,STACK_FRAME_OVERHEAD
@@ -512,7 +526,7 @@ BEGIN_FW_FTR_SECTION
4:
END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
#endif
- stb r5,PACASOFTIRQEN(r13)
+ TRACE_AND_RESTORE_IRQ(r5);
/* extract EE bit and use it to restore paca->hard_enabled */
ld r3,_MSR(r1)
@@ -580,6 +594,16 @@ do_work:
bne restore
/* here we are preempting the current task */
1:
+#ifdef CONFIG_TRACE_IRQFLAGS
+ bl .trace_hardirqs_on
+ /* Note: we just clobbered r10 which used to contain the previous
+ * MSR before the hard-disabling done by the caller of do_work.
+ * We don't have that value anymore, but it doesn't matter as
+ * we will hard-enable unconditionally, we can just reload the
+ * current MSR into r10
+ */
+ mfmsr r10
+#endif /* CONFIG_TRACE_IRQFLAGS */
li r0,1
stb r0,PACASOFTIRQEN(r13)
stb r0,PACAHARDIRQEN(r13)
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 0f4fac51202..785af9b5659 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -30,6 +30,7 @@
#include <asm/thread_info.h>
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
+#include <asm/ptrace.h>
/* 601 only have IBAT; cr0.eq is set on 601 when using this macro */
#define LOAD_BAT(n, reg, RA, RB) \
@@ -268,8 +269,8 @@ __secondary_hold_acknowledge:
li r10,MSR_KERNEL & ~(MSR_IR|MSR_DR); /* can take exceptions */ \
MTMSRD(r10); /* (except for mach check in rtas) */ \
stw r0,GPR0(r11); \
- lis r10,0x7265; /* put exception frame marker */ \
- addi r10,r10,0x6773; \
+ lis r10,STACK_FRAME_REGS_MARKER@ha; /* exception frame marker */ \
+ addi r10,r10,STACK_FRAME_REGS_MARKER@l; \
stw r10,8(r11); \
SAVE_4GPRS(3, r11); \
SAVE_2GPRS(7, r11)
@@ -763,23 +764,6 @@ load_up_altivec:
b fast_exception_return
/*
- * AltiVec unavailable trap from kernel - print a message, but let
- * the task use AltiVec in the kernel until it returns to user mode.
- */
-KernelAltiVec:
- lwz r3,_MSR(r1)
- oris r3,r3,MSR_VEC@h
- stw r3,_MSR(r1) /* enable use of AltiVec after return */
- lis r3,87f@h
- ori r3,r3,87f@l
- mr r4,r2 /* current */
- lwz r5,_NIP(r1)
- bl printk
- b ret_from_except
-87: .string "AltiVec used in kernel (task=%p, pc=%x) \n"
- .align 4,0
-
-/*
* giveup_altivec(tsk)
* Disable AltiVec for the task given as the argument,
* and save the AltiVec registers in its thread_struct.
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index ad071a146a8..b84ec6a2fc9 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -211,7 +211,7 @@ skpinv: addi r4,r4,1 /* Increment */
SET_IVOR(12, WatchdogTimer);
SET_IVOR(13, DataTLBError);
SET_IVOR(14, InstructionTLBError);
- SET_IVOR(15, Debug);
+ SET_IVOR(15, DebugCrit);
/* Establish the interrupt vector base */
lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */
@@ -578,7 +578,7 @@ interrupt_base:
b InstructionStorage
/* Debug Interrupt */
- DEBUG_EXCEPTION
+ DEBUG_CRIT_EXCEPTION
/*
* Local functions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index d3aee08e681..215973a2c8d 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -36,8 +36,7 @@
#include <asm/firmware.h>
#include <asm/page_64.h>
#include <asm/exception.h>
-
-#define DO_SOFT_DISABLE
+#include <asm/irqflags.h>
/*
* We layout physical memory as follows:
@@ -450,8 +449,8 @@ bad_stack:
*/
fast_exc_return_irq: /* restores irq state too */
ld r3,SOFTE(r1)
+ TRACE_AND_RESTORE_IRQ(r3);
ld r12,_MSR(r1)
- stb r3,PACASOFTIRQEN(r13) /* restore paca->soft_enabled */
rldicl r4,r12,49,63 /* get MSR_EE to LSB */
stb r4,PACAHARDIRQEN(r13) /* restore paca->hard_enabled */
b 1f
@@ -621,7 +620,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
mtlr r10
andi. r10,r12,MSR_RI /* check for unrecoverable exception */
- beq- unrecov_slb
+ beq- 2f
.machine push
.machine "power4"
@@ -643,6 +642,22 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
rfid
b . /* prevent speculative execution */
+2:
+#ifdef CONFIG_PPC_ISERIES
+BEGIN_FW_FTR_SECTION
+ b unrecov_slb
+END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
+#endif /* CONFIG_PPC_ISERIES */
+ mfspr r11,SPRN_SRR0
+ clrrdi r10,r13,32
+ LOAD_HANDLER(r10,unrecov_slb)
+ mtspr SPRN_SRR0,r10
+ mfmsr r10
+ ori r10,r10,MSR_IR|MSR_DR|MSR_RI
+ mtspr SPRN_SRR1,r10
+ rfid
+ b .
+
unrecov_slb:
EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB)
DISABLE_INTS
@@ -808,7 +823,7 @@ _STATIC(load_up_altivec)
* Hash table stuff
*/
.align 7
-_GLOBAL(do_hash_page)
+_STATIC(do_hash_page)
std r3,_DAR(r1)
std r4,_DSISR(r1)
@@ -820,6 +835,27 @@ BEGIN_FTR_SECTION
END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
/*
+ * On iSeries, we soft-disable interrupts here, then
+ * hard-enable interrupts so that the hash_page code can spin on
+ * the hash_table_lock without problems on a shared processor.
+ */
+ DISABLE_INTS
+
+ /*
+ * Currently, trace_hardirqs_off() will be called by DISABLE_INTS
+ * and will clobber volatile registers when irq tracing is enabled
+ * so we need to reload them. It may be possible to be smarter here
+ * and move the irq tracing elsewhere but let's keep it simple for
+ * now
+ */
+#ifdef CONFIG_TRACE_IRQFLAGS
+ ld r3,_DAR(r1)
+ ld r4,_DSISR(r1)
+ ld r5,_TRAP(r1)
+ ld r12,_MSR(r1)
+ clrrdi r5,r5,4
+#endif /* CONFIG_TRACE_IRQFLAGS */
+ /*
* We need to set the _PAGE_USER bit if MSR_PR is set or if we are
* accessing a userspace segment (even from the kernel). We assume
* kernel addresses always have the high bit set.
@@ -832,13 +868,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
rlwimi r4,r5,22+2,31-2,31-2 /* Set _PAGE_EXEC if trap is 0x400 */
/*
- * On iSeries, we soft-disable interrupts here, then
- * hard-enable interrupts so that the hash_page code can spin on
- * the hash_table_lock without problems on a shared processor.
- */
- DISABLE_INTS
-
- /*
* r3 contains the faulting address
* r4 contains the required access permissions
* r5 contains the trap number
@@ -848,7 +877,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
bl .hash_page /* build HPTE if possible */
cmpdi r3,0 /* see if hash_page succeeded */
-#ifdef DO_SOFT_DISABLE
BEGIN_FW_FTR_SECTION
/*
* If we had interrupts soft-enabled at the point where the
@@ -860,7 +888,7 @@ BEGIN_FW_FTR_SECTION
*/
beq 13f
END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
-#endif
+
BEGIN_FW_FTR_SECTION
/*
* Here we have interrupts hard-disabled, so it is sufficient
@@ -874,11 +902,12 @@ END_FW_FTR_SECTION_IFCLR(FW_FEATURE_ISERIES)
/*
* hash_page couldn't handle it, set soft interrupt enable back
- * to what it was before the trap. Note that .local_irq_restore
+ * to what it was before the trap. Note that .raw_local_irq_restore
* handles any interrupts pending at this point.
*/
ld r3,SOFTE(r1)
- bl .local_irq_restore
+ TRACE_AND_RESTORE_IRQ_PARTIAL(r3, 11f)
+ bl .raw_local_irq_restore
b 11f
/* Here we have a page fault that hash_page can't handle. */
@@ -1477,6 +1506,10 @@ _INIT_STATIC(start_here_multiplatform)
addi r2,r2,0x4000
add r2,r2,r26
+ /* Set initial ptr to current */
+ LOAD_REG_IMMEDIATE(r4, init_task)
+ std r4,PACACURRENT(r13)
+
/* Do very early kernel initializations, including initial hash table,
* stab and slb setup before we turn on relocation. */
@@ -1505,10 +1538,6 @@ _INIT_GLOBAL(start_here_common)
li r0,0
stdu r0,-STACK_FRAME_OVERHEAD(r1)
- /* ptr to current */
- LOAD_REG_IMMEDIATE(r4, init_task)
- std r4,PACACURRENT(r13)
-
/* Load the TOC */
ld r2,PACATOC(r13)
std r1,PACAKSAVE(r13)
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
index ba9393f8e77..aefafc6330c 100644
--- a/arch/powerpc/kernel/head_booke.h
+++ b/arch/powerpc/kernel/head_booke.h
@@ -56,8 +56,17 @@
* is necessary since the MMU is always on, for Book-E parts, and the stacks
* are offset from KERNELBASE.
*
+ * There is some space optimization to be had here if desired. However
+ * to allow for a common kernel with support for debug exceptions either
+ * going to critical or their own debug level we aren't currently
+ * providing configurations that micro-optimize space usage.
*/
-#define BOOKE_EXCEPTION_STACK_SIZE (8192)
+#ifdef CONFIG_44x
+#define NUM_EXCEPTION_LVLS 2
+#else
+#define NUM_EXCEPTION_LVLS 3
+#endif
+#define BOOKE_EXCEPTION_STACK_SIZE (4096 * NUM_EXCEPTION_LVLS)
/* CRIT_SPRG only used in critical exception handling */
#define CRIT_SPRG SPRN_SPRG2
@@ -68,7 +77,7 @@
#define CRIT_STACK_TOP (exception_stack_top)
/* only on e200 for now */
-#define DEBUG_STACK_TOP (exception_stack_top - 4096)
+#define DEBUG_STACK_TOP (exception_stack_top - 8192)
#define DEBUG_SPRG SPRN_SPRG6W
#ifdef CONFIG_SMP
@@ -212,9 +221,8 @@ label:
* save (and later restore) the MSR via SPRN_CSRR1, which will still have
* the MSR_DE bit set.
*/
-#ifdef CONFIG_E200
-#define DEBUG_EXCEPTION \
- START_EXCEPTION(Debug); \
+#define DEBUG_DEBUG_EXCEPTION \
+ START_EXCEPTION(DebugDebug); \
DEBUG_EXCEPTION_PROLOG; \
\
/* \
@@ -234,8 +242,8 @@ label:
cmplw r12,r10; \
blt+ 2f; /* addr below exception vectors */ \
\
- lis r10,Debug@h; \
- ori r10,r10,Debug@l; \
+ lis r10,DebugDebug@h; \
+ ori r10,r10,DebugDebug@l; \
cmplw r12,r10; \
bgt+ 2f; /* addr above exception vectors */ \
\
@@ -265,9 +273,9 @@ label:
2: mfspr r4,SPRN_DBSR; \
addi r3,r1,STACK_FRAME_OVERHEAD; \
EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, debug_transfer_to_handler, ret_from_debug_exc)
-#else
-#define DEBUG_EXCEPTION \
- START_EXCEPTION(Debug); \
+
+#define DEBUG_CRIT_EXCEPTION \
+ START_EXCEPTION(DebugCrit); \
CRITICAL_EXCEPTION_PROLOG; \
\
/* \
@@ -287,8 +295,8 @@ label:
cmplw r12,r10; \
blt+ 2f; /* addr below exception vectors */ \
\
- lis r10,Debug@h; \
- ori r10,r10,Debug@l; \
+ lis r10,DebugCrit@h; \
+ ori r10,r10,DebugCrit@l; \
cmplw r12,r10; \
bgt+ 2f; /* addr above exception vectors */ \
\
@@ -318,7 +326,6 @@ label:
2: mfspr r4,SPRN_DBSR; \
addi r3,r1,STACK_FRAME_OVERHEAD; \
EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, crit_transfer_to_handler, ret_from_crit_exc)
-#endif
#define INSTRUCTION_STORAGE_EXCEPTION \
START_EXCEPTION(InstructionStorage) \
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index d9cc2c288d9..4ff74414356 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -68,7 +68,9 @@ _ENTRY(_start);
mr r29,r5
mr r28,r6
mr r27,r7
+ li r25,0 /* phys kernel start (low) */
li r24,0 /* CPU number */
+ li r23,0 /* phys kernel start (high) */
/* We try to not make any assumptions about how the boot loader
* setup or used the TLBs. We invalidate all mappings from the
@@ -167,7 +169,28 @@ skpinv: addi r6,r6,1 /* Increment */
mtspr SPRN_MAS0,r7
tlbre
- /* Just modify the entry ID, EPN and RPN for the temp mapping */
+ /* grab and fixup the RPN */
+ mfspr r6,SPRN_MAS1 /* extract MAS1[SIZE] */
+ rlwinm r6,r6,25,27,30
+ li r8,-1
+ addi r6,r6,10
+ slw r6,r8,r6 /* convert to mask */
+
+ bl 1f /* Find our address */
+1: mflr r7
+
+ mfspr r8,SPRN_MAS3
+#ifdef CONFIG_PHYS_64BIT
+ mfspr r23,SPRN_MAS7
+#endif
+ and r8,r6,r8
+ subfic r9,r6,-4096
+ and r9,r9,r7
+
+ or r25,r8,r9
+ ori r8,r25,(MAS3_SX|MAS3_SW|MAS3_SR)
+
+ /* Just modify the entry ID and EPN for the temp mapping */
lis r7,0x1000 /* Set MAS0(TLBSEL) = 1 */
rlwimi r7,r5,16,4,15 /* Setup MAS0 = TLBSEL | ESEL(r5) */
mtspr SPRN_MAS0,r7
@@ -177,12 +200,10 @@ skpinv: addi r6,r6,1 /* Increment */
ori r6,r6,(MAS1_TSIZE(BOOKE_PAGESZ_4K))@l
mtspr SPRN_MAS1,r6
mfspr r6,SPRN_MAS2
- lis r7,PHYSICAL_START@h
+ li r7,0 /* temp EPN = 0 */
rlwimi r7,r6,0,20,31
mtspr SPRN_MAS2,r7
- mfspr r6,SPRN_MAS3
- rlwimi r7,r6,0,20,31
- mtspr SPRN_MAS3,r7
+ mtspr SPRN_MAS3,r8
tlbwe
xori r6,r4,1
@@ -232,8 +253,7 @@ skpinv: addi r6,r6,1 /* Increment */
ori r6,r6,PAGE_OFFSET@l
rlwimi r6,r7,0,20,31
mtspr SPRN_MAS2,r6
- li r7,(MAS3_SX|MAS3_SW|MAS3_SR)
- mtspr SPRN_MAS3,r7
+ mtspr SPRN_MAS3,r8
tlbwe
/* 7. Jump to KERNELBASE mapping */
@@ -283,7 +303,10 @@ skpinv: addi r6,r6,1 /* Increment */
SET_IVOR(12, WatchdogTimer);
SET_IVOR(13, DataTLBError);
SET_IVOR(14, InstructionTLBError);
- SET_IVOR(15, Debug);
+ SET_IVOR(15, DebugDebug);
+#if defined(CONFIG_E500)
+ SET_IVOR(15, DebugCrit);
+#endif
SET_IVOR(32, SPEUnavailable);
SET_IVOR(33, SPEFloatingPointData);
SET_IVOR(34, SPEFloatingPointRound);
@@ -718,7 +741,10 @@ interrupt_base:
/* Debug Interrupt */
- DEBUG_EXCEPTION
+ DEBUG_DEBUG_EXCEPTION
+#if defined(CONFIG_E500)
+ DEBUG_CRIT_EXCEPTION
+#endif
/*
* Local functions
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 2f50bb5d00f..9971159c804 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -183,7 +183,7 @@ static int ibmebus_create_devices(const struct of_device_id *matches)
ret = ibmebus_create_device(child);
if (ret) {
printk(KERN_ERR "%s: failed to create device (%i)",
- __FUNCTION__, ret);
+ __func__, ret);
of_node_put(child);
break;
}
@@ -269,7 +269,7 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus,
if (bus_find_device(&ibmebus_bus_type, NULL, path,
ibmebus_match_path)) {
printk(KERN_WARNING "%s: %s has already been probed\n",
- __FUNCTION__, path);
+ __func__, path);
rc = -EEXIST;
goto out;
}
@@ -279,7 +279,7 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus,
of_node_put(dn);
} else {
printk(KERN_WARNING "%s: no such device node: %s\n",
- __FUNCTION__, path);
+ __func__, path);
rc = -ENODEV;
}
@@ -308,7 +308,7 @@ static ssize_t ibmebus_store_remove(struct bus_type *bus,
return count;
} else {
printk(KERN_WARNING "%s: %s not on the bus\n",
- __FUNCTION__, path);
+ __func__, path);
kfree(path);
return -ENODEV;
@@ -337,14 +337,14 @@ static int __init ibmebus_bus_init(void)
err = of_bus_type_init(&ibmebus_bus_type, "ibmebus");
if (err) {
printk(KERN_ERR "%s: failed to register IBM eBus.\n",
- __FUNCTION__);
+ __func__);
return err;
}
err = device_register(&ibmebus_bus_device);
if (err) {
printk(KERN_WARNING "%s: device_register returned %i\n",
- __FUNCTION__, err);
+ __func__, err);
bus_unregister(&ibmebus_bus_type);
return err;
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 8f1f4e539c4..0c663669bc3 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -520,7 +520,7 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name)
unsigned int order;
if (!tbl || !tbl->it_map) {
- printk(KERN_ERR "%s: expected TCE map for %s\n", __FUNCTION__,
+ printk(KERN_ERR "%s: expected TCE map for %s\n", __func__,
node_name);
return;
}
@@ -530,7 +530,7 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name)
for (i = 0; i < (tbl->it_size/64); i++) {
if (tbl->it_map[i] != 0) {
printk(KERN_WARNING "%s: Unexpected TCEs for %s\n",
- __FUNCTION__, node_name);
+ __func__, node_name);
break;
}
}
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 292163f5b39..425616f92d1 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -114,7 +114,7 @@ static inline void set_soft_enabled(unsigned long enable)
: : "r" (enable), "i" (offsetof(struct paca_struct, soft_enabled)));
}
-void local_irq_restore(unsigned long en)
+void raw_local_irq_restore(unsigned long en)
{
/*
* get_paca()->soft_enabled = en;
@@ -174,6 +174,7 @@ void local_irq_restore(unsigned long en)
__hard_irq_enable();
}
+EXPORT_SYMBOL(raw_local_irq_restore);
#endif /* CONFIG_PPC64 */
int show_interrupts(struct seq_file *p, void *v)
@@ -310,8 +311,21 @@ void do_IRQ(struct pt_regs *regs)
handler = &__do_IRQ;
irqtp->task = curtp->task;
irqtp->flags = 0;
+
+ /* Copy the softirq bits in preempt_count so that the
+ * softirq checks work in the hardirq context.
+ */
+ irqtp->preempt_count =
+ (irqtp->preempt_count & ~SOFTIRQ_MASK) |
+ (curtp->preempt_count & SOFTIRQ_MASK);
+
call_handle_irq(irq, desc, irqtp, handler);
irqtp->task = NULL;
+
+
+ /* Set any flag that may have been set on the
+ * alternate stack
+ */
if (irqtp->flags)
set_bits(irqtp->flags, &curtp->flags);
} else
@@ -357,7 +371,7 @@ void irq_ctx_init(void)
memset((void *)softirq_ctx[i], 0, THREAD_SIZE);
tp = softirq_ctx[i];
tp->cpu = i;
- tp->preempt_count = SOFTIRQ_OFFSET;
+ tp->preempt_count = 0;
memset((void *)hardirq_ctx[i], 0, THREAD_SIZE);
tp = hardirq_ctx[i];
diff --git a/arch/powerpc/kernel/isa-bridge.c b/arch/powerpc/kernel/isa-bridge.c
index ee172aa42aa..289af348978 100644
--- a/arch/powerpc/kernel/isa-bridge.c
+++ b/arch/powerpc/kernel/isa-bridge.c
@@ -80,13 +80,13 @@ static void __devinit pci_process_ISA_OF_ranges(struct device_node *isa_node,
* (size depending on dev->n_addr_cells)
* cell 5: the size of the range
*/
- if ((range->isa_addr.a_hi && ISA_SPACE_MASK) != ISA_SPACE_IO) {
+ if ((range->isa_addr.a_hi & ISA_SPACE_MASK) != ISA_SPACE_IO) {
range++;
rlen -= sizeof(struct isa_range);
if (rlen < sizeof(struct isa_range))
goto inval_range;
}
- if ((range->isa_addr.a_hi && ISA_SPACE_MASK) != ISA_SPACE_IO)
+ if ((range->isa_addr.a_hi & ISA_SPACE_MASK) != ISA_SPACE_IO)
goto inval_range;
isa_addr = range->isa_addr.a_lo;
@@ -99,7 +99,7 @@ static void __devinit pci_process_ISA_OF_ranges(struct device_node *isa_node,
*/
if ((pci_addr != 0) || (isa_addr != 0)) {
printk(KERN_ERR "unexpected isa to pci mapping: %s\n",
- __FUNCTION__);
+ __func__);
return;
}
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index dcb89a88df4..1ffacc698ff 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -226,7 +226,7 @@ static void parse_system_parameter_string(struct seq_file *m)
unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
if (!local_buffer) {
printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
- __FILE__, __FUNCTION__, __LINE__);
+ __FILE__, __func__, __LINE__);
return;
}
@@ -243,14 +243,14 @@ static void parse_system_parameter_string(struct seq_file *m)
if (call_status != 0) {
printk(KERN_INFO
"%s %s Error calling get-system-parameter (0x%x)\n",
- __FILE__, __FUNCTION__, call_status);
+ __FILE__, __func__, call_status);
} else {
int splpar_strlen;
int idx, w_idx;
char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
if (!workbuffer) {
printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
- __FILE__, __FUNCTION__, __LINE__);
+ __FILE__, __func__, __LINE__);
kfree(local_buffer);
return;
}
@@ -484,10 +484,10 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
current_weight = (resource >> 5 * 8) & 0xFF;
pr_debug("%s: current_entitled = %lu, current_weight = %u\n",
- __FUNCTION__, current_entitled, current_weight);
+ __func__, current_entitled, current_weight);
pr_debug("%s: new_entitled = %lu, new_weight = %u\n",
- __FUNCTION__, *new_entitled_ptr, *new_weight_ptr);
+ __func__, *new_entitled_ptr, *new_weight_ptr);
retval = plpar_hcall_norets(H_SET_PPP, *new_entitled_ptr,
*new_weight_ptr);
@@ -502,7 +502,7 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
retval = -EINVAL;
} else {
printk(KERN_WARNING "%s: received unknown hv return code %ld",
- __FUNCTION__, retval);
+ __func__, retval);
retval = -EIO;
}
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index c0c8e8c3ced..2d202f274e7 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -12,8 +12,9 @@
#include <linux/kexec.h>
#include <linux/reboot.h>
#include <linux/threads.h>
+#include <linux/lmb.h>
#include <asm/machdep.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
void machine_crash_shutdown(struct pt_regs *regs)
{
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 55f1a25085c..ac163bd46cf 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -15,7 +15,6 @@
#include <asm/ptrace.h>
#include <asm/page.h>
#include <asm/lppaca.h>
-#include <asm/iseries/it_lp_reg_save.h>
#include <asm/paca.h>
#include <asm/mmu.h>
@@ -25,13 +24,13 @@
extern unsigned long __toc_start;
/*
- * iSeries structure which the hypervisor knows about - this structure
+ * The structure which the hypervisor knows about - this structure
* should not cross a page boundary. The vpa_init/register_vpa call
* is now known to fail if the lppaca structure crosses a page
- * boundary. The lppaca is also used on POWER5 pSeries boxes. The
- * lppaca is 640 bytes long, and cannot readily change since the
- * hypervisor knows its layout, so a 1kB alignment will suffice to
- * ensure that it doesn't cross a page boundary.
+ * boundary. The lppaca is also used on legacy iSeries and POWER5
+ * pSeries boxes. The lppaca is 640 bytes long, and cannot readily
+ * change since the hypervisor knows its layout, so a 1kB alignment
+ * will suffice to ensure that it doesn't cross a page boundary.
*/
struct lppaca lppaca[] = {
[0 ... (NR_CPUS-1)] = {
@@ -66,32 +65,17 @@ struct slb_shadow slb_shadow[] __cacheline_aligned = {
* processors. The processor VPD array needs one entry per physical
* processor (not thread).
*/
-#define PACA_INIT_COMMON(number) \
+#define PACA_INIT(number) \
+{ \
.lppaca_ptr = &lppaca[number], \
.lock_token = 0x8000, \
.paca_index = (number), /* Paca Index */ \
.kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \
.hw_cpu_id = 0xffff, \
- .slb_shadow_ptr = &slb_shadow[number],
-
-#ifdef CONFIG_PPC_ISERIES
-#define PACA_INIT_ISERIES(number) \
- .reg_save_ptr = &iseries_reg_save[number],
-
-#define PACA_INIT(number) \
-{ \
- PACA_INIT_COMMON(number) \
- PACA_INIT_ISERIES(number) \
+ .slb_shadow_ptr = &slb_shadow[number], \
+ .__current = &init_task, \
}
-#else
-#define PACA_INIT(number) \
-{ \
- PACA_INIT_COMMON(number) \
-}
-
-#endif
-
struct paca_struct paca[] = {
PACA_INIT(0),
#if NR_CPUS > 1
diff --git a/arch/powerpc/kernel/ppc32.h b/arch/powerpc/kernel/ppc32.h
index 90e56277179..fda05e2211d 100644
--- a/arch/powerpc/kernel/ppc32.h
+++ b/arch/powerpc/kernel/ppc32.h
@@ -135,4 +135,6 @@ struct ucontext32 {
struct mcontext32 uc_mcontext;
};
+extern int copy_siginfo_to_user32(struct compat_siginfo __user *d, siginfo_t *s);
+
#endif /* _PPC64_PPC32_H */
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 65d14e6ddc3..09fcb50c45a 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -44,10 +44,6 @@
#include <asm/signal.h>
#include <asm/dcr.h>
-#ifdef CONFIG_PPC64
-EXPORT_SYMBOL(local_irq_restore);
-#endif
-
#ifdef CONFIG_PPC32
extern void transfer_to_handler(void);
extern void do_IRQ(struct pt_regs *regs);
@@ -57,7 +53,6 @@ extern void program_check_exception(struct pt_regs *regs);
extern void single_step_exception(struct pt_regs *regs);
extern int sys_sigreturn(struct pt_regs *regs);
-EXPORT_SYMBOL(empty_zero_page);
EXPORT_SYMBOL(clear_pages);
EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(ISA_DMA_THRESHOLD);
@@ -78,6 +73,7 @@ EXPORT_SYMBOL(strncpy);
EXPORT_SYMBOL(strcat);
EXPORT_SYMBOL(strlen);
EXPORT_SYMBOL(strcmp);
+EXPORT_SYMBOL(strncmp);
EXPORT_SYMBOL(csum_partial);
EXPORT_SYMBOL(csum_partial_copy_generic);
@@ -191,3 +187,4 @@ EXPORT_SYMBOL(intercept_table);
EXPORT_SYMBOL(__mtdcr);
EXPORT_SYMBOL(__mfdcr);
#endif
+EXPORT_SYMBOL(empty_zero_page);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 4ec60552150..703100d5e45 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -868,11 +868,6 @@ int sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
flush_spe_to_thread(current);
error = do_execve(filename, (char __user * __user *) a1,
(char __user * __user *) a2, regs);
- if (error == 0) {
- task_lock(current);
- current->ptrace &= ~PT_DTRACE;
- task_unlock(current);
- }
putname(filename);
out:
return error;
@@ -919,20 +914,6 @@ int validate_sp(unsigned long sp, struct task_struct *p,
return valid_irq_stack(sp, p, nbytes);
}
-#ifdef CONFIG_PPC64
-#define MIN_STACK_FRAME 112 /* same as STACK_FRAME_OVERHEAD, in fact */
-#define FRAME_LR_SAVE 2
-#define INT_FRAME_SIZE (sizeof(struct pt_regs) + STACK_FRAME_OVERHEAD + 288)
-#define REGS_MARKER 0x7265677368657265ul
-#define FRAME_MARKER 12
-#else
-#define MIN_STACK_FRAME 16
-#define FRAME_LR_SAVE 1
-#define INT_FRAME_SIZE (sizeof(struct pt_regs) + STACK_FRAME_OVERHEAD)
-#define REGS_MARKER 0x72656773ul
-#define FRAME_MARKER 2
-#endif
-
EXPORT_SYMBOL(validate_sp);
unsigned long get_wchan(struct task_struct *p)
@@ -944,15 +925,15 @@ unsigned long get_wchan(struct task_struct *p)
return 0;
sp = p->thread.ksp;
- if (!validate_sp(sp, p, MIN_STACK_FRAME))
+ if (!validate_sp(sp, p, STACK_FRAME_OVERHEAD))
return 0;
do {
sp = *(unsigned long *)sp;
- if (!validate_sp(sp, p, MIN_STACK_FRAME))
+ if (!validate_sp(sp, p, STACK_FRAME_OVERHEAD))
return 0;
if (count > 0) {
- ip = ((unsigned long *)sp)[FRAME_LR_SAVE];
+ ip = ((unsigned long *)sp)[STACK_FRAME_LR_SAVE];
if (!in_sched_functions(ip))
return ip;
}
@@ -981,12 +962,12 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
lr = 0;
printk("Call Trace:\n");
do {
- if (!validate_sp(sp, tsk, MIN_STACK_FRAME))
+ if (!validate_sp(sp, tsk, STACK_FRAME_OVERHEAD))
return;
stack = (unsigned long *) sp;
newsp = stack[0];
- ip = stack[FRAME_LR_SAVE];
+ ip = stack[STACK_FRAME_LR_SAVE];
if (!firstframe || ip != lr) {
printk("["REG"] ["REG"] ", sp, ip);
print_symbol("%s", ip);
@@ -1000,8 +981,8 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
* See if this is an exception frame.
* We look for the "regshere" marker in the current frame.
*/
- if (validate_sp(sp, tsk, INT_FRAME_SIZE)
- && stack[FRAME_MARKER] == REGS_MARKER) {
+ if (validate_sp(sp, tsk, STACK_INT_FRAME_SIZE)
+ && stack[STACK_FRAME_MARKER] == STACK_FRAME_REGS_MARKER) {
struct pt_regs *regs = (struct pt_regs *)
(sp + STACK_FRAME_OVERHEAD);
printk("--- Exception: %lx", regs->trap);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index eac97f48b9b..3bfe7837e82 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -31,10 +31,10 @@
#include <linux/kexec.h>
#include <linux/debugfs.h>
#include <linux/irq.h>
+#include <linux/lmb.h>
#include <asm/prom.h>
#include <asm/rtas.h>
-#include <asm/lmb.h>
#include <asm/page.h>
#include <asm/processor.h>
#include <asm/irq.h>
@@ -51,6 +51,7 @@
#include <asm/machdep.h>
#include <asm/pSeries_reconfig.h>
#include <asm/pci-bridge.h>
+#include <asm/phyp_dump.h>
#include <asm/kexec.h>
#ifdef DEBUG
@@ -436,7 +437,7 @@ early_param("mem", early_parse_mem);
* The device tree may be allocated beyond our memory limit, or inside the
* crash kernel region for kdump. If so, move it out of the way.
*/
-static void move_device_tree(void)
+static void __init move_device_tree(void)
{
unsigned long start, size;
void *p;
@@ -1040,6 +1041,87 @@ static void __init early_reserve_mem(void)
#endif
}
+#ifdef CONFIG_PHYP_DUMP
+/**
+ * phyp_dump_calculate_reserve_size() - reserve variable boot area 5% or arg
+ *
+ * Function to find the largest size we need to reserve
+ * during early boot process.
+ *
+ * It either looks for boot param and returns that OR
+ * returns larger of 256 or 5% rounded down to multiples of 256MB.
+ *
+ */
+static inline unsigned long phyp_dump_calculate_reserve_size(void)
+{
+ unsigned long tmp;
+
+ if (phyp_dump_info->reserve_bootvar)
+ return phyp_dump_info->reserve_bootvar;
+
+ /* divide by 20 to get 5% of value */
+ tmp = lmb_end_of_DRAM();
+ do_div(tmp, 20);
+
+ /* round it down in multiples of 256 */
+ tmp = tmp & ~0x0FFFFFFFUL;
+
+ return (tmp > PHYP_DUMP_RMR_END ? tmp : PHYP_DUMP_RMR_END);
+}
+
+/**
+ * phyp_dump_reserve_mem() - reserve all not-yet-dumped mmemory
+ *
+ * This routine may reserve memory regions in the kernel only
+ * if the system is supported and a dump was taken in last
+ * boot instance or if the hardware is supported and the
+ * scratch area needs to be setup. In other instances it returns
+ * without reserving anything. The memory in case of dump being
+ * active is freed when the dump is collected (by userland tools).
+ */
+static void __init phyp_dump_reserve_mem(void)
+{
+ unsigned long base, size;
+ unsigned long variable_reserve_size;
+
+ if (!phyp_dump_info->phyp_dump_configured) {
+ printk(KERN_ERR "Phyp-dump not supported on this hardware\n");
+ return;
+ }
+
+ if (!phyp_dump_info->phyp_dump_at_boot) {
+ printk(KERN_INFO "Phyp-dump disabled at boot time\n");
+ return;
+ }
+
+ variable_reserve_size = phyp_dump_calculate_reserve_size();
+
+ if (phyp_dump_info->phyp_dump_is_active) {
+ /* Reserve *everything* above RMR.Area freed by userland tools*/
+ base = variable_reserve_size;
+ size = lmb_end_of_DRAM() - base;
+
+ /* XXX crashed_ram_end is wrong, since it may be beyond
+ * the memory_limit, it will need to be adjusted. */
+ lmb_reserve(base, size);
+
+ phyp_dump_info->init_reserve_start = base;
+ phyp_dump_info->init_reserve_size = size;
+ } else {
+ size = phyp_dump_info->cpu_state_size +
+ phyp_dump_info->hpte_region_size +
+ variable_reserve_size;
+ base = lmb_end_of_DRAM() - size;
+ lmb_reserve(base, size);
+ phyp_dump_info->init_reserve_start = base;
+ phyp_dump_info->init_reserve_size = size;
+ }
+}
+#else
+static inline void __init phyp_dump_reserve_mem(void) {}
+#endif /* CONFIG_PHYP_DUMP && CONFIG_PPC_RTAS */
+
+
void __init early_init_devtree(void *params)
{
DBG(" -> early_init_devtree(%p)\n", params);
@@ -1052,6 +1134,11 @@ void __init early_init_devtree(void *params)
of_scan_flat_dt(early_init_dt_scan_rtas, NULL);
#endif
+#ifdef CONFIG_PHYP_DUMP
+ /* scan tree to see if dump occured during last boot */
+ of_scan_flat_dt(early_init_dt_scan_phyp_dump, NULL);
+#endif
+
/* Retrieve various informations from the /chosen node of the
* device-tree, including the platform type, initrd location and
* size, TCE reserve, and more ...
@@ -1072,6 +1159,7 @@ void __init early_init_devtree(void *params)
reserve_kdump_trampoline();
reserve_crashkernel();
early_reserve_mem();
+ phyp_dump_reserve_mem();
lmb_enforce_memory_limit(memory_limit);
lmb_analyze();
@@ -1244,12 +1332,14 @@ EXPORT_SYMBOL(of_node_put);
*/
void of_attach_node(struct device_node *np)
{
- write_lock(&devtree_lock);
+ unsigned long flags;
+
+ write_lock_irqsave(&devtree_lock, flags);
np->sibling = np->parent->child;
np->allnext = allnodes;
np->parent->child = np;
allnodes = np;
- write_unlock(&devtree_lock);
+ write_unlock_irqrestore(&devtree_lock, flags);
}
/*
@@ -1260,8 +1350,9 @@ void of_attach_node(struct device_node *np)
void of_detach_node(struct device_node *np)
{
struct device_node *parent;
+ unsigned long flags;
- write_lock(&devtree_lock);
+ write_lock_irqsave(&devtree_lock, flags);
parent = np->parent;
if (!parent)
@@ -1292,7 +1383,7 @@ void of_detach_node(struct device_node *np)
of_node_set_flag(np, OF_DETACHED);
out_unlock:
- write_unlock(&devtree_lock);
+ write_unlock_irqrestore(&devtree_lock, flags);
}
#ifdef CONFIG_PPC_PSERIES
@@ -1373,20 +1464,21 @@ __initcall(prom_reconfig_setup);
int prom_add_property(struct device_node* np, struct property* prop)
{
struct property **next;
+ unsigned long flags;
prop->next = NULL;
- write_lock(&devtree_lock);
+ write_lock_irqsave(&devtree_lock, flags);
next = &np->properties;
while (*next) {
if (strcmp(prop->name, (*next)->name) == 0) {
/* duplicate ! don't insert it */
- write_unlock(&devtree_lock);
+ write_unlock_irqrestore(&devtree_lock, flags);
return -1;
}
next = &(*next)->next;
}
*next = prop;
- write_unlock(&devtree_lock);
+ write_unlock_irqrestore(&devtree_lock, flags);
#ifdef CONFIG_PROC_DEVICETREE
/* try to add to proc as well if it was initialized */
@@ -1406,9 +1498,10 @@ int prom_add_property(struct device_node* np, struct property* prop)
int prom_remove_property(struct device_node *np, struct property *prop)
{
struct property **next;
+ unsigned long flags;
int found = 0;
- write_lock(&devtree_lock);
+ write_lock_irqsave(&devtree_lock, flags);
next = &np->properties;
while (*next) {
if (*next == prop) {
@@ -1421,7 +1514,7 @@ int prom_remove_property(struct device_node *np, struct property *prop)
}
next = &(*next)->next;
}
- write_unlock(&devtree_lock);
+ write_unlock_irqrestore(&devtree_lock, flags);
if (!found)
return -ENODEV;
@@ -1447,9 +1540,10 @@ int prom_update_property(struct device_node *np,
struct property *oldprop)
{
struct property **next;
+ unsigned long flags;
int found = 0;
- write_lock(&devtree_lock);
+ write_lock_irqsave(&devtree_lock, flags);
next = &np->properties;
while (*next) {
if (*next == oldprop) {
@@ -1463,7 +1557,7 @@ int prom_update_property(struct device_node *np,
}
next = &(*next)->next;
}
- write_unlock(&devtree_lock);
+ write_unlock_irqrestore(&devtree_lock, flags);
if (!found)
return -ENODEV;
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 5ab4c8466cc..6d6df1e6032 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2240,6 +2240,14 @@ static void __init fixup_device_tree_efika(void)
if (rv != PROM_ERROR && (strcmp(prop, "chrp") == 0))
prom_setprop(node, "/", "device_type", "efika", sizeof("efika"));
+ /* CODEGEN,description is exposed in /proc/cpuinfo so
+ fix that too */
+ rv = prom_getprop(node, "CODEGEN,description", prop, sizeof(prop));
+ if (rv != PROM_ERROR && (strstr(prop, "CHRP")))
+ prom_setprop(node, "/", "CODEGEN,description",
+ "Efika 5200B PowerPC System",
+ sizeof("Efika 5200B PowerPC System"));
+
/* Fixup bestcomm interrupts property */
node = call_prom("finddevice", 1, 1, ADDR("/builtin/bestcomm"));
if (PHANDLE_VALID(node)) {
diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c
index 4c1de6af4c0..9d30e10970a 100644
--- a/arch/powerpc/kernel/ptrace32.c
+++ b/arch/powerpc/kernel/ptrace32.c
@@ -29,12 +29,15 @@
#include <linux/security.h>
#include <linux/signal.h>
#include <linux/compat.h>
+#include <linux/elf.h>
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/system.h>
+#include "ppc32.h"
+
/*
* does not yet catch signals sent when the child dies.
* in exit.c or in signal.c.
@@ -64,6 +67,27 @@ static long compat_ptrace_old(struct task_struct *child, long request,
return -EPERM;
}
+static int compat_ptrace_getsiginfo(struct task_struct *child, compat_siginfo_t __user *data)
+{
+ siginfo_t lastinfo;
+ int error = -ESRCH;
+
+ read_lock(&tasklist_lock);
+ if (likely(child->sighand != NULL)) {
+ error = -EINVAL;
+ spin_lock_irq(&child->sighand->siglock);
+ if (likely(child->last_siginfo != NULL)) {
+ lastinfo = *child->last_siginfo;
+ error = 0;
+ }
+ spin_unlock_irq(&child->sighand->siglock);
+ }
+ read_unlock(&tasklist_lock);
+ if (!error)
+ return copy_siginfo_to_user32(data, &lastinfo);
+ return error;
+}
+
long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
compat_ulong_t caddr, compat_ulong_t cdata)
{
@@ -282,6 +306,9 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
0, PT_REGS_COUNT * sizeof(compat_long_t),
compat_ptr(data));
+ case PTRACE_GETSIGINFO:
+ return compat_ptrace_getsiginfo(child, compat_ptr(data));
+
case PTRACE_GETFPREGS:
case PTRACE_SETFPREGS:
case PTRACE_GETVRREGS:
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 52e95c2158c..34843c31841 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -22,11 +22,11 @@
#include <linux/smp.h>
#include <linux/completion.h>
#include <linux/cpumask.h>
+#include <linux/lmb.h>
#include <asm/prom.h>
#include <asm/rtas.h>
#include <asm/hvcall.h>
-#include <asm/semaphore.h>
#include <asm/machdep.h>
#include <asm/firmware.h>
#include <asm/page.h>
@@ -34,7 +34,6 @@
#include <asm/system.h>
#include <asm/delay.h>
#include <asm/uaccess.h>
-#include <asm/lmb.h>
#include <asm/udbg.h>
#include <asm/syscalls.h>
#include <asm/smp.h>
@@ -507,7 +506,7 @@ int rtas_error_rc(int rtas_rc)
break;
default:
printk(KERN_ERR "%s: unexpected RTAS error %d\n",
- __FUNCTION__, rtas_rc);
+ __func__, rtas_rc);
rc = -ERANGE;
break;
}
diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
index 538baf46f15..627f126d184 100644
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -807,7 +807,7 @@ int __init rtas_flash_init(void)
rtas_block_ctor);
if (!flash_block_cache) {
printk(KERN_ERR "%s: failed to create block cache\n",
- __FUNCTION__);
+ __func__);
rc = -ENOMEM;
goto cleanup;
}
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index 433a0a0949f..3ab88a9dc70 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -56,21 +56,6 @@ static inline int config_access_valid(struct pci_dn *dn, int where)
return 0;
}
-static int of_device_available(struct device_node * dn)
-{
- const char *status;
-
- status = of_get_property(dn, "status", NULL);
-
- if (!status)
- return 1;
-
- if (!strcmp(status, "okay"))
- return 1;
-
- return 0;
-}
-
int rtas_read_config(struct pci_dn *pdn, int where, int size, u32 *val)
{
int returnval = -1;
@@ -117,7 +102,7 @@ static int rtas_pci_read_config(struct pci_bus *bus,
for (dn = busdn->child; dn; dn = dn->sibling) {
struct pci_dn *pdn = PCI_DN(dn);
if (pdn && pdn->devfn == devfn
- && of_device_available(dn))
+ && of_device_is_available(dn))
return rtas_read_config(pdn, where, size, val);
}
@@ -164,7 +149,7 @@ static int rtas_pci_write_config(struct pci_bus *bus,
for (dn = busdn->child; dn; dn = dn->sibling) {
struct pci_dn *pdn = PCI_DN(dn);
if (pdn && pdn->devfn == devfn
- && of_device_available(dn))
+ && of_device_is_available(dn))
return rtas_write_config(pdn, where, size, val);
}
return PCIBIOS_DEVICE_NOT_FOUND;
@@ -326,7 +311,7 @@ int pcibios_remove_root_bus(struct pci_controller *phb)
res = b->resource[0];
if (!res->flags) {
- printk(KERN_ERR "%s: no IO resource for PHB %s\n", __FUNCTION__,
+ printk(KERN_ERR "%s: no IO resource for PHB %s\n", __func__,
b->name);
return 1;
}
@@ -334,13 +319,13 @@ int pcibios_remove_root_bus(struct pci_controller *phb)
rc = pcibios_unmap_io_space(b);
if (rc) {
printk(KERN_ERR "%s: failed to unmap IO on bus %s\n",
- __FUNCTION__, b->name);
+ __func__, b->name);
return 1;
}
if (release_resource(res)) {
printk(KERN_ERR "%s: failed to release IO on bus %s\n",
- __FUNCTION__, b->name);
+ __func__, b->name);
return 1;
}
@@ -348,13 +333,13 @@ int pcibios_remove_root_bus(struct pci_controller *phb)
res = b->resource[i];
if (!res->flags && i == 0) {
printk(KERN_ERR "%s: no MEM resource for PHB %s\n",
- __FUNCTION__, b->name);
+ __func__, b->name);
return 1;
}
if (res->flags && release_resource(res)) {
printk(KERN_ERR
"%s: failed to release IO %d on bus %s\n",
- __FUNCTION__, i, b->name);
+ __func__, i, b->name);
return 1;
}
}
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 6adb5a1e98b..db540eab09f 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -34,6 +34,7 @@
#include <linux/serial_8250.h>
#include <linux/debugfs.h>
#include <linux/percpu.h>
+#include <linux/lmb.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/processor.h>
@@ -56,7 +57,6 @@
#include <asm/cache.h>
#include <asm/page.h>
#include <asm/mmu.h>
-#include <asm/lmb.h>
#include <asm/xmon.h>
#include <asm/cputhreads.h>
@@ -167,6 +167,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
unsigned short min;
if (cpu_id == NR_CPUS) {
+ struct device_node *root;
+ const char *model = NULL;
#if defined(CONFIG_SMP) && defined(CONFIG_PPC32)
unsigned long bogosum = 0;
int i;
@@ -178,6 +180,13 @@ static int show_cpuinfo(struct seq_file *m, void *v)
seq_printf(m, "timebase\t: %lu\n", ppc_tb_freq);
if (ppc_md.name)
seq_printf(m, "platform\t: %s\n", ppc_md.name);
+ root = of_find_node_by_path("/");
+ if (root)
+ model = of_get_property(root, "model", NULL);
+ if (model)
+ seq_printf(m, "model\t\t: %s\n", model);
+ of_node_put(root);
+
if (ppc_md.show_cpuinfo != NULL)
ppc_md.show_cpuinfo(m);
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 06d918d94dd..36f6779c88d 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -164,6 +164,18 @@ int __init ppc_setup_l2cr(char *str)
}
__setup("l2cr=", ppc_setup_l2cr);
+/* Checks "l3cr=xxxx" command-line option */
+int __init ppc_setup_l3cr(char *str)
+{
+ if (cpu_has_feature(CPU_FTR_L3CR)) {
+ unsigned long val = simple_strtoul(str, NULL, 0);
+ printk(KERN_INFO "l3cr set to %lx\n", val);
+ _set_L3CR(val); /* and enable it */
+ }
+ return 1;
+}
+__setup("l3cr=", ppc_setup_l3cr);
+
#ifdef CONFIG_GENERIC_NVRAM
/* Generic nvram hooks used by drivers/char/gen_nvram.c */
@@ -269,7 +281,7 @@ void __init setup_arch(char **cmdline_p)
if (ppc_md.panic)
setup_panic();
- init_mm.start_code = PAGE_OFFSET;
+ init_mm.start_code = (unsigned long)_stext;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = klimit;
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 3b1529c103e..31ada9fdfc5 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -33,6 +33,8 @@
#include <linux/serial_8250.h>
#include <linux/bootmem.h>
#include <linux/pci.h>
+#include <linux/lockdep.h>
+#include <linux/lmb.h>
#include <asm/io.h>
#include <asm/kdump.h>
#include <asm/prom.h>
@@ -55,7 +57,6 @@
#include <asm/cache.h>
#include <asm/page.h>
#include <asm/mmu.h>
-#include <asm/lmb.h>
#include <asm/firmware.h>
#include <asm/xmon.h>
#include <asm/udbg.h>
@@ -178,6 +179,9 @@ void __init early_setup(unsigned long dt_ptr)
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
+ /* Initialize lockdep early or else spinlocks will blow */
+ lockdep_init();
+
DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);
/*
@@ -510,7 +514,7 @@ void __init setup_arch(char **cmdline_p)
if (ppc_md.panic)
setup_panic();
- init_mm.start_code = PAGE_OFFSET;
+ init_mm.start_code = (unsigned long)_stext;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = klimit;
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index d840bc772fd..ad6943468ee 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -621,6 +621,18 @@ int copy_siginfo_to_user32(struct compat_siginfo __user *d, siginfo_t *s)
#define copy_siginfo_to_user copy_siginfo_to_user32
+int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
+{
+ memset(to, 0, sizeof *to);
+
+ if (copy_from_user(to, from, 3*sizeof(int)) ||
+ copy_from_user(to->_sifields._pad,
+ from->_sifields._pad, SI_PAD_SIZE32))
+ return -EFAULT;
+
+ return 0;
+}
+
/*
* Note: it is necessary to treat pid and sig as unsigned ints, with the
* corresponding cast to a signed int to insure that the proper conversion
@@ -634,9 +646,10 @@ long compat_sys_rt_sigqueueinfo(u32 pid, u32 sig, compat_siginfo_t __user *uinfo
int ret;
mm_segment_t old_fs = get_fs();
- if (copy_from_user (&info, uinfo, 3*sizeof(int)) ||
- copy_from_user (info._sifields._pad, uinfo->_sifields._pad, SI_PAD_SIZE32))
- return -EFAULT;
+ ret = copy_siginfo_from_user32(&info, uinfo);
+ if (unlikely(ret))
+ return ret;
+
set_fs (KERNEL_DS);
/* The __user pointer cast is valid becasuse of the set_fs() */
ret = sys_rt_sigqueueinfo((int)pid, (int)sig, (siginfo_t __user *) &info);
diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c
new file mode 100644
index 00000000000..e3638eeaaae
--- /dev/null
+++ b/arch/powerpc/kernel/stacktrace.c
@@ -0,0 +1,47 @@
+/*
+ * Stack trace utility
+ *
+ * Copyright 2008 Christoph Hellwig, IBM Corp.
+ *
+ *
+ * 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.
+ */
+
+#include <linux/sched.h>
+#include <linux/stacktrace.h>
+#include <asm/ptrace.h>
+#include <asm/asm-offsets.h>
+
+/*
+ * Save stack-backtrace addresses into a stack_trace buffer.
+ */
+void save_stack_trace(struct stack_trace *trace)
+{
+ unsigned long sp;
+
+ asm("mr %0,1" : "=r" (sp));
+
+ for (;;) {
+ unsigned long *stack = (unsigned long *) sp;
+ unsigned long newsp, ip;
+
+ if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD))
+ return;
+
+ newsp = stack[0];
+ ip = stack[STACK_FRAME_LR_SAVE];
+
+ if (!trace->skip)
+ trace->entries[trace->nr_entries++] = ip;
+ else
+ trace->skip--;
+
+ if (trace->nr_entries >= trace->max_entries)
+ return;
+
+ sp = newsp;
+ }
+}
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 4a4f5c6b560..709f8cb8bfc 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -47,7 +47,6 @@
#include <asm/types.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
-#include <asm/semaphore.h>
#include <asm/time.h>
#include <asm/mmu_context.h>
#include <asm/ppc-pci.h>
@@ -368,11 +367,6 @@ long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
- if (error == 0) {
- task_lock(current);
- current->ptrace &= ~PT_DTRACE;
- task_unlock(current);
- }
putname(filename);
out:
diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index 3b1d5dd6564..e722a4eeb5d 100644
--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -38,7 +38,6 @@
#include <linux/personality.h>
#include <asm/uaccess.h>
-#include <asm/semaphore.h>
#include <asm/syscalls.h>
#include <asm/time.h>
#include <asm/unistd.h>
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index d3437c4c4a6..c21a626af67 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -21,13 +21,14 @@
#include <linux/elf.h>
#include <linux/security.h>
#include <linux/bootmem.h>
+#include <linux/lmb.h>
#include <asm/pgtable.h>
#include <asm/system.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/mmu_context.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/cputable.h>
#include <asm/sections.h>
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index f98867252ee..b77f8af7ddd 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -139,7 +139,7 @@ static int vio_bus_remove(struct device *dev)
*/
int vio_register_driver(struct vio_driver *viodrv)
{
- printk(KERN_DEBUG "%s: driver %s registering\n", __FUNCTION__,
+ printk(KERN_DEBUG "%s: driver %s registering\n", __func__,
viodrv->driver.name);
/* fill in 'struct driver' fields */
@@ -184,7 +184,7 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
/* we need the 'device_type' property, in order to match with drivers */
if (of_node->type == NULL) {
printk(KERN_WARNING "%s: node %s missing 'device_type'\n",
- __FUNCTION__,
+ __func__,
of_node->name ? of_node->name : "<unknown>");
return NULL;
}
@@ -192,7 +192,7 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
unit_address = of_get_property(of_node, "reg", NULL);
if (unit_address == NULL) {
printk(KERN_WARNING "%s: node %s missing 'reg'\n",
- __FUNCTION__,
+ __func__,
of_node->name ? of_node->name : "<unknown>");
return NULL;
}
@@ -227,7 +227,7 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
/* register with generic device framework */
if (device_register(&viodev->dev)) {
printk(KERN_ERR "%s: failed to register device %s\n",
- __FUNCTION__, viodev->dev.bus_id);
+ __func__, viodev->dev.bus_id);
/* XXX free TCE table */
kfree(viodev);
return NULL;
@@ -258,7 +258,7 @@ static int __init vio_bus_init(void)
err = device_register(&vio_bus_device.dev);
if (err) {
printk(KERN_WARNING "%s: device_register returned %i\n",
- __FUNCTION__, err);
+ __func__, err);
return err;
}
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 0afb9e31d2a..0c3000bf8d7 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -1,11 +1,9 @@
#ifdef CONFIG_PPC64
-#include <asm/page.h>
#define PROVIDE32(x) PROVIDE(__unused__##x)
#else
-#define PAGE_SIZE 4096
-#define KERNELBASE CONFIG_KERNEL_START
#define PROVIDE32(x) PROVIDE(x)
#endif
+#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
#include <asm/cache.h>
@@ -33,7 +31,7 @@ SECTIONS
*/
/* Text and gots */
- .text : {
+ .text : AT(ADDR(.text) - LOAD_OFFSET) {
ALIGN_FUNCTION();
*(.text.head)
_text = .;
@@ -58,7 +56,7 @@ SECTIONS
RODATA
/* Exception & bug tables */
- __ex_table : {
+ __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
__start___ex_table = .;
*(__ex_table)
__stop___ex_table = .;
@@ -74,7 +72,7 @@ SECTIONS
. = ALIGN(PAGE_SIZE);
__init_begin = .;
- .init.text : {
+ .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
_sinittext = .;
INIT_TEXT
_einittext = .;
@@ -83,11 +81,11 @@ SECTIONS
/* .exit.text is discarded at runtime, not link time,
* to deal with references from __bug_table
*/
- .exit.text : {
+ .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
EXIT_TEXT
}
- .init.data : {
+ .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
INIT_DATA
__vtop_table_begin = .;
*(.vtop_fixup);
@@ -103,19 +101,19 @@ SECTIONS
}
. = ALIGN(16);
- .init.setup : {
+ .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
__setup_start = .;
*(.init.setup)
__setup_end = .;
}
- .initcall.init : {
+ .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
__initcall_start = .;
INITCALLS
__initcall_end = .;
}
- .con_initcall.init : {
+ .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
@@ -124,14 +122,14 @@ SECTIONS
SECURITY_INIT
. = ALIGN(8);
- __ftr_fixup : {
+ __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
__start___ftr_fixup = .;
*(__ftr_fixup)
__stop___ftr_fixup = .;
}
#ifdef CONFIG_PPC64
. = ALIGN(8);
- __fw_ftr_fixup : {
+ __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
__start___fw_ftr_fixup = .;
*(__fw_ftr_fixup)
__stop___fw_ftr_fixup = .;
@@ -139,14 +137,14 @@ SECTIONS
#endif
#ifdef CONFIG_BLK_DEV_INITRD
. = ALIGN(PAGE_SIZE);
- .init.ramfs : {
+ .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
__initramfs_start = .;
*(.init.ramfs)
__initramfs_end = .;
}
#endif
. = ALIGN(PAGE_SIZE);
- .data.percpu : {
+ .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
__per_cpu_start = .;
*(.data.percpu)
*(.data.percpu.shared_aligned)
@@ -154,7 +152,7 @@ SECTIONS
}
. = ALIGN(8);
- .machine.desc : {
+ .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
__machine_desc_start = . ;
*(.machine.desc)
__machine_desc_end = . ;
@@ -172,25 +170,24 @@ SECTIONS
_sdata = .;
#ifdef CONFIG_PPC32
- .data :
- {
+ .data : AT(ADDR(.data) - LOAD_OFFSET) {
DATA_DATA
*(.sdata)
*(.got.plt) *(.got)
}
#else
- .data : {
+ .data : AT(ADDR(.data) - LOAD_OFFSET) {
DATA_DATA
*(.data.rel*)
*(.toc1)
*(.branch_lt)
}
- .opd : {
+ .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
*(.opd)
}
- .got : {
+ .got : AT(ADDR(.got) - LOAD_OFFSET) {
__toc_start = .;
*(.got)
*(.toc)
@@ -207,26 +204,26 @@ SECTIONS
#else
. = ALIGN(16384);
#endif
- .data.init_task : {
+ .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
*(.data.init_task)
}
. = ALIGN(PAGE_SIZE);
- .data.page_aligned : {
+ .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
*(.data.page_aligned)
}
- .data.cacheline_aligned : {
+ .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
*(.data.cacheline_aligned)
}
. = ALIGN(L1_CACHE_BYTES);
- .data.read_mostly : {
+ .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
*(.data.read_mostly)
}
. = ALIGN(PAGE_SIZE);
- __data_nosave : {
+ .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
__nosave_begin = .;
*(.data.nosave)
. = ALIGN(PAGE_SIZE);
@@ -237,7 +234,7 @@ SECTIONS
* And finally the bss
*/
- .bss : {
+ .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
__bss_start = .;
*(.sbss) *(.scommon)
*(.dynbss)