diff options
Diffstat (limited to 'arch/powerpc/kernel')
27 files changed, 415 insertions, 211 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 12868b1c4e05..ba336930d448 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -118,6 +118,7 @@ obj-$(CONFIG_PPC_IO_WORKAROUNDS) += io-workarounds.o obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o +obj-$(CONFIG_TRACING) += trace_clock.o ifneq ($(CONFIG_PPC_INDIRECT_PIO),y) obj-y += iomap.o diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index de62392f093c..221d584d089f 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -213,7 +213,6 @@ int main(void) offsetof(struct tlb_core_data, esel_max)); DEFINE(TCD_ESEL_FIRST, offsetof(struct tlb_core_data, esel_first)); - DEFINE(TCD_LOCK, offsetof(struct tlb_core_data, lock)); #endif /* CONFIG_PPC_BOOK3E */ #ifdef CONFIG_PPC_STD_MMU_64 diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c index 4c68bfe4108a..41a7d9d49a5a 100644 --- a/arch/powerpc/kernel/dma-iommu.c +++ b/arch/powerpc/kernel/dma-iommu.c @@ -73,7 +73,7 @@ static void dma_iommu_unmap_sg(struct device *dev, struct scatterlist *sglist, } /* We support DMA to/from any memory page via the iommu */ -static int dma_iommu_dma_supported(struct device *dev, u64 mask) +int dma_iommu_dma_supported(struct device *dev, u64 mask) { struct iommu_table *tbl = get_iommu_table_base(dev); diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index 6e8d764ce47b..c6689f658b50 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -47,8 +47,8 @@ static u64 swiotlb_powerpc_get_required(struct device *dev) * for everything else. */ struct dma_map_ops swiotlb_dma_ops = { - .alloc = dma_direct_alloc_coherent, - .free = dma_direct_free_coherent, + .alloc = __dma_direct_alloc_coherent, + .free = __dma_direct_free_coherent, .mmap = dma_direct_mmap_coherent, .map_sg = swiotlb_map_sg_attrs, .unmap_sg = swiotlb_unmap_sg_attrs, diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index 35e4dcc5dce3..59503ed98e5f 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -16,6 +16,7 @@ #include <asm/bug.h> #include <asm/machdep.h> #include <asm/swiotlb.h> +#include <asm/iommu.h> /* * Generic direct DMA implementation @@ -39,9 +40,31 @@ static u64 __maybe_unused get_pfn_limit(struct device *dev) return pfn; } -void *dma_direct_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag, - struct dma_attrs *attrs) +static int dma_direct_dma_supported(struct device *dev, u64 mask) +{ +#ifdef CONFIG_PPC64 + u64 limit = get_dma_offset(dev) + (memblock_end_of_DRAM() - 1); + + /* Limit fits in the mask, we are good */ + if (mask >= limit) + return 1; + +#ifdef CONFIG_FSL_SOC + /* Freescale gets another chance via ZONE_DMA/ZONE_DMA32, however + * that will have to be refined if/when they support iommus + */ + return 1; +#endif + /* Sorry ... */ + return 0; +#else + return 1; +#endif +} + +void *__dma_direct_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, + struct dma_attrs *attrs) { void *ret; #ifdef CONFIG_NOT_COHERENT_CACHE @@ -96,9 +119,9 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size, #endif } -void dma_direct_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle, - struct dma_attrs *attrs) +void __dma_direct_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle, + struct dma_attrs *attrs) { #ifdef CONFIG_NOT_COHERENT_CACHE __dma_free_coherent(size, vaddr); @@ -107,6 +130,51 @@ void dma_direct_free_coherent(struct device *dev, size_t size, #endif } +static void *dma_direct_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, + struct dma_attrs *attrs) +{ + struct iommu_table *iommu; + + /* The coherent mask may be smaller than the real mask, check if + * we can really use the direct ops + */ + if (dma_direct_dma_supported(dev, dev->coherent_dma_mask)) + return __dma_direct_alloc_coherent(dev, size, dma_handle, + flag, attrs); + + /* Ok we can't ... do we have an iommu ? If not, fail */ + iommu = get_iommu_table_base(dev); + if (!iommu) + return NULL; + + /* Try to use the iommu */ + return iommu_alloc_coherent(dev, iommu, size, dma_handle, + dev->coherent_dma_mask, flag, + dev_to_node(dev)); +} + +static void dma_direct_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle, + struct dma_attrs *attrs) +{ + struct iommu_table *iommu; + + /* See comments in dma_direct_alloc_coherent() */ + if (dma_direct_dma_supported(dev, dev->coherent_dma_mask)) + return __dma_direct_free_coherent(dev, size, vaddr, dma_handle, + attrs); + /* Maybe we used an iommu ... */ + iommu = get_iommu_table_base(dev); + + /* If we hit that we should have never allocated in the first + * place so how come we are freeing ? + */ + if (WARN_ON(!iommu)) + return; + iommu_free_coherent(iommu, size, vaddr, dma_handle); +} + int dma_direct_mmap_coherent(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t handle, size_t size, struct dma_attrs *attrs) @@ -147,18 +215,6 @@ static void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sg, { } -static int dma_direct_dma_supported(struct device *dev, u64 mask) -{ -#ifdef CONFIG_PPC64 - /* Could be improved so platforms can set the limit in case - * they have limited DMA windows - */ - return mask >= get_dma_offset(dev) + (memblock_end_of_DRAM() - 1); -#else - return 1; -#endif -} - static u64 dma_direct_get_required_mask(struct device *dev) { u64 end, mask; @@ -230,6 +286,25 @@ struct dma_map_ops dma_direct_ops = { }; EXPORT_SYMBOL(dma_direct_ops); +int dma_set_coherent_mask(struct device *dev, u64 mask) +{ + if (!dma_supported(dev, mask)) { + /* + * We need to special case the direct DMA ops which can + * support a fallback for coherent allocations. There + * is no dma_op->set_coherent_mask() so we have to do + * things the hard way: + */ + if (get_dma_ops(dev) != &dma_direct_ops || + get_iommu_table_base(dev) == NULL || + !dma_iommu_dma_supported(dev, mask)) + return -EIO; + } + dev->coherent_dma_mask = mask; + return 0; +} +EXPORT_SYMBOL_GPL(dma_set_coherent_mask); + #define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) int __dma_set_mask(struct device *dev, u64 dma_mask) @@ -278,6 +353,13 @@ u64 dma_get_required_mask(struct device *dev) if (ppc_md.dma_get_required_mask) return ppc_md.dma_get_required_mask(dev); + if (dev_is_pci(dev)) { + struct pci_dev *pdev = to_pci_dev(dev); + struct pci_controller *phb = pci_bus_to_host(pdev->bus); + if (phb->controller_ops.dma_get_required_mask) + return phb->controller_ops.dma_get_required_mask(pdev); + } + return __dma_get_required_mask(dev); } EXPORT_SYMBOL_GPL(dma_get_required_mask); diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index af9b597b10af..e968533e3e05 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -308,11 +308,26 @@ void eeh_slot_error_detail(struct eeh_pe *pe, int severity) if (!(pe->type & EEH_PE_PHB)) { if (eeh_has_flag(EEH_ENABLE_IO_FOR_LOG)) eeh_pci_enable(pe, EEH_OPT_THAW_MMIO); + + /* + * The config space of some PCI devices can't be accessed + * when their PEs are in frozen state. Otherwise, fenced + * PHB might be seen. Those PEs are identified with flag + * EEH_PE_CFG_RESTRICTED, indicating EEH_PE_CFG_BLOCKED + * is set automatically when the PE is put to EEH_PE_ISOLATED. + * + * Restoring BARs possibly triggers PCI config access in + * (OPAL) firmware and then causes fenced PHB. If the + * PCI config is blocked with flag EEH_PE_CFG_BLOCKED, it's + * pointless to restore BARs and dump config space. + */ eeh_ops->configure_bridge(pe); - eeh_pe_restore_bars(pe); + if (!(pe->state & EEH_PE_CFG_BLOCKED)) { + eeh_pe_restore_bars(pe); - pci_regs_buf[0] = 0; - eeh_pe_traverse(pe, eeh_dump_pe_log, &loglen); + pci_regs_buf[0] = 0; + eeh_pe_traverse(pe, eeh_dump_pe_log, &loglen); + } } eeh_ops->get_log(pe, severity, pci_regs_buf, loglen); @@ -750,14 +765,14 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state stat eeh_pe_state_clear(pe, EEH_PE_ISOLATED); break; case pcie_hot_reset: - eeh_pe_state_mark(pe, EEH_PE_ISOLATED); + eeh_pe_state_mark_with_cfg(pe, EEH_PE_ISOLATED); eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE); eeh_pe_dev_traverse(pe, eeh_disable_and_save_dev_state, dev); eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); eeh_ops->reset(pe, EEH_RESET_HOT); break; case pcie_warm_reset: - eeh_pe_state_mark(pe, EEH_PE_ISOLATED); + eeh_pe_state_mark_with_cfg(pe, EEH_PE_ISOLATED); eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE); eeh_pe_dev_traverse(pe, eeh_disable_and_save_dev_state, dev); eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); @@ -1116,9 +1131,6 @@ void eeh_add_device_late(struct pci_dev *dev) return; } - if (eeh_has_flag(EEH_PROBE_MODE_DEV)) - eeh_ops->probe(pdn, NULL); - /* * The EEH cache might not be removed correctly because of * unbalanced kref to the device during unplug time, which @@ -1142,6 +1154,9 @@ void eeh_add_device_late(struct pci_dev *dev) dev->dev.archdata.edev = NULL; } + if (eeh_has_flag(EEH_PROBE_MODE_DEV)) + eeh_ops->probe(pdn, NULL); + edev->pdev = dev; dev->dev.archdata.edev = edev; diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index 35f0b62259bb..8654cb166c19 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -657,6 +657,28 @@ void eeh_pe_state_clear(struct eeh_pe *pe, int state) eeh_pe_traverse(pe, __eeh_pe_state_clear, &state); } +/** + * eeh_pe_state_mark_with_cfg - Mark PE state with unblocked config space + * @pe: PE + * @state: PE state to be set + * + * Set specified flag to PE and its child PEs. The PCI config space + * of some PEs is blocked automatically when EEH_PE_ISOLATED is set, + * which isn't needed in some situations. The function allows to set + * the specified flag to indicated PEs without blocking their PCI + * config space. + */ +void eeh_pe_state_mark_with_cfg(struct eeh_pe *pe, int state) +{ + eeh_pe_traverse(pe, __eeh_pe_state_mark, &state); + if (!(state & EEH_PE_ISOLATED)) + return; + + /* Clear EEH_PE_CFG_BLOCKED, which might be set just now */ + state = EEH_PE_CFG_BLOCKED; + eeh_pe_traverse(pe, __eeh_pe_state_clear, &state); +} + /* * Some PCI bridges (e.g. PLX bridges) have primary/secondary * buses assigned explicitly by firmware, and we probably have diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 46fc0f4d8982..2405631e91a2 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -20,6 +20,7 @@ */ #include <linux/errno.h> +#include <linux/err.h> #include <linux/sys.h> #include <linux/threads.h> #include <asm/reg.h> @@ -354,7 +355,7 @@ ret_from_syscall: SYNC MTMSRD(r10) lwz r9,TI_FLAGS(r12) - li r8,-_LAST_ERRNO + li r8,-MAX_ERRNO andi. r0,r9,(_TIF_SYSCALL_DOTRACE|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK) bne- syscall_exit_work cmplw 0,r3,r8 @@ -457,6 +458,10 @@ syscall_dotrace: lwz r7,GPR7(r1) lwz r8,GPR8(r1) REST_NVGPRS(r1) + + cmplwi r0,NR_syscalls + /* Return code is already in r3 thanks to do_syscall_trace_enter() */ + bge- ret_from_syscall b syscall_dotrace_cont syscall_exit_work: diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 579e0f9a2d57..a94f155db78e 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -19,6 +19,7 @@ */ #include <linux/errno.h> +#include <linux/err.h> #include <asm/unistd.h> #include <asm/processor.h> #include <asm/page.h> @@ -150,8 +151,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR) CURRENT_THREAD_INFO(r11, r1) ld r10,TI_FLAGS(r11) andi. r11,r10,_TIF_SYSCALL_DOTRACE - bne syscall_dotrace -.Lsyscall_dotrace_cont: + bne syscall_dotrace /* does not return */ cmpldi 0,r0,NR_syscalls bge- syscall_enosys @@ -207,7 +207,7 @@ system_call: /* label this so stack traces look sane */ #endif /* CONFIG_PPC_BOOK3E */ ld r9,TI_FLAGS(r12) - li r11,-_LAST_ERRNO + li r11,-MAX_ERRNO andi. r0,r9,(_TIF_SYSCALL_DOTRACE|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK) bne- syscall_exit_work cmpld r3,r11 @@ -245,22 +245,34 @@ syscall_dotrace: bl save_nvgprs addi r3,r1,STACK_FRAME_OVERHEAD bl do_syscall_trace_enter + /* - * Restore argument registers possibly just changed. - * We use the return value of do_syscall_trace_enter - * for the call number to look up in the table (r0). + * We use the return value of do_syscall_trace_enter() as the syscall + * number. If the syscall was rejected for any reason do_syscall_trace_enter() + * returns an invalid syscall number and the test below against + * NR_syscalls will fail. */ mr r0,r3 + + /* Restore argument registers just clobbered and/or possibly changed. */ ld r3,GPR3(r1) ld r4,GPR4(r1) ld r5,GPR5(r1) ld r6,GPR6(r1) ld r7,GPR7(r1) ld r8,GPR8(r1) + + /* Repopulate r9 and r10 for the system_call path */ addi r9,r1,STACK_FRAME_OVERHEAD CURRENT_THREAD_INFO(r10, r1) ld r10,TI_FLAGS(r10) - b .Lsyscall_dotrace_cont + + cmpldi r0,NR_syscalls + blt+ system_call + + /* Return code is already in r3 thanks to do_syscall_trace_enter() */ + b .Lsyscall_exit + syscall_enosys: li r3,-ENOSYS @@ -277,7 +289,7 @@ syscall_exit_work: beq+ 0f REST_NVGPRS(r1) b 2f -0: cmpld r3,r11 /* r10 is -LAST_ERRNO */ +0: cmpld r3,r11 /* r11 is -MAX_ERRNO */ blt+ 1f andi. r0,r9,_TIF_NOERROR bne- 1f diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 3e68d1c69718..f3bd5e747ed8 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -1313,11 +1313,14 @@ skpinv: addi r6,r6,1 /* Increment */ sync isync -/* The mapping only needs to be cache-coherent on SMP */ -#ifdef CONFIG_SMP -#define M_IF_SMP MAS2_M +/* + * The mapping only needs to be cache-coherent on SMP, except on + * Freescale e500mc derivatives where it's also needed for coherent DMA. + */ +#if defined(CONFIG_SMP) || defined(CONFIG_PPC_E500MC) +#define M_IF_NEEDED MAS2_M #else -#define M_IF_SMP 0 +#define M_IF_NEEDED 0 #endif /* 6. Setup KERNELBASE mapping in TLB[0] @@ -1332,7 +1335,7 @@ skpinv: addi r6,r6,1 /* Increment */ ori r6,r6,(MAS1_TSIZE(BOOK3E_PAGESZ_1GB))@l mtspr SPRN_MAS1,r6 - LOAD_REG_IMMEDIATE(r6, PAGE_OFFSET | M_IF_SMP) + LOAD_REG_IMMEDIATE(r6, PAGE_OFFSET | M_IF_NEEDED) mtspr SPRN_MAS2,r6 rlwinm r5,r5,0,0,25 diff --git a/arch/powerpc/kernel/fsl_booke_entry_mapping.S b/arch/powerpc/kernel/fsl_booke_entry_mapping.S index f22e7e44fbf3..83dd0f6776b3 100644 --- a/arch/powerpc/kernel/fsl_booke_entry_mapping.S +++ b/arch/powerpc/kernel/fsl_booke_entry_mapping.S @@ -152,11 +152,14 @@ skpinv: addi r6,r6,1 /* Increment */ tlbivax 0,r9 TLBSYNC -/* The mapping only needs to be cache-coherent on SMP */ -#ifdef CONFIG_SMP -#define M_IF_SMP MAS2_M +/* + * The mapping only needs to be cache-coherent on SMP, except on + * Freescale e500mc derivatives where it's also needed for coherent DMA. + */ +#if defined(CONFIG_SMP) || defined(CONFIG_PPC_E500MC) +#define M_IF_NEEDED MAS2_M #else -#define M_IF_SMP 0 +#define M_IF_NEEDED 0 #endif #if defined(ENTRY_MAPPING_BOOT_SETUP) @@ -167,8 +170,8 @@ skpinv: addi r6,r6,1 /* Increment */ lis r6,(MAS1_VALID|MAS1_IPROT)@h ori r6,r6,(MAS1_TSIZE(BOOK3E_PAGESZ_64M))@l mtspr SPRN_MAS1,r6 - lis r6,MAS2_VAL(PAGE_OFFSET, BOOK3E_PAGESZ_64M, M_IF_SMP)@h - ori r6,r6,MAS2_VAL(PAGE_OFFSET, BOOK3E_PAGESZ_64M, M_IF_SMP)@l + lis r6,MAS2_VAL(PAGE_OFFSET, BOOK3E_PAGESZ_64M, M_IF_NEEDED)@h + ori r6,r6,MAS2_VAL(PAGE_OFFSET, BOOK3E_PAGESZ_64M, M_IF_NEEDED)@l mtspr SPRN_MAS2,r6 mtspr SPRN_MAS3,r8 tlbwe diff --git a/arch/powerpc/kernel/jump_label.c b/arch/powerpc/kernel/jump_label.c index a1ed8a8c7cb4..6472472093d0 100644 --- a/arch/powerpc/kernel/jump_label.c +++ b/arch/powerpc/kernel/jump_label.c @@ -17,7 +17,7 @@ void arch_jump_label_transform(struct jump_entry *entry, { u32 *addr = (u32 *)(unsigned long)entry->code; - if (type == JUMP_LABEL_ENABLE) + if (type == JUMP_LABEL_JMP) patch_branch(addr, entry->target, 0); else patch_instruction(addr, PPC_INST_NOP); diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c index 33aa4ddf597d..9ad37f827a97 100644 --- a/arch/powerpc/kernel/kvm.c +++ b/arch/powerpc/kernel/kvm.c @@ -649,7 +649,6 @@ static void kvm_check_ins(u32 *inst, u32 features) kvm_patch_ins_mtsrin(inst, inst_rt, inst_rb); } break; - break; #endif } diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 7c6bb4b17b49..ed3ab509faca 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -596,25 +596,6 @@ _GLOBAL(copy_page) b 2b /* - * void atomic_clear_mask(atomic_t mask, atomic_t *addr) - * void atomic_set_mask(atomic_t mask, atomic_t *addr); - */ -_GLOBAL(atomic_clear_mask) -10: lwarx r5,0,r4 - andc r5,r5,r3 - PPC405_ERR77(0,r4) - stwcx. r5,0,r4 - bne- 10b - blr -_GLOBAL(atomic_set_mask) -10: lwarx r5,0,r4 - or r5,r5,r3 - PPC405_ERR77(0,r4) - stwcx. r5,0,r4 - bne- 10b - blr - -/* * Extended precision shifts. * * Updated to be valid for shift counts from 0 to 63 inclusive. diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index 4e314b90c75d..6e4168cf4698 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -475,9 +475,18 @@ _GLOBAL(kexec_wait) #ifdef CONFIG_KEXEC /* use no memory without kexec */ lwz r4,0(r5) cmpwi 0,r4,0 - bnea 0x60 + beq 99b +#ifdef CONFIG_PPC_BOOK3S_64 + li r10,0x60 + mfmsr r11 + clrrdi r11,r11,1 /* Clear MSR_LE */ + mtsrr0 r10 + mtsrr1 r11 + rfid +#else + ba 0x60 +#endif #endif - b 99b /* this can be in text because we won't change it until we are * running in real anyways diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index 1e703f8ebad4..98ba106a59ef 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -541,10 +541,9 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type, time->tv_sec = be64_to_cpu(oops_hdr->timestamp); time->tv_nsec = 0; } - *buf = kmalloc(length, GFP_KERNEL); + *buf = kmemdup(buff + hdr_size, length, GFP_KERNEL); if (*buf == NULL) return -ENOMEM; - memcpy(*buf, buff + hdr_size, length); kfree(buff); if (err_type == ERR_TYPE_KERNEL_PANIC_GZ) @@ -582,9 +581,10 @@ static int nvram_pstore_init(void) spin_lock_init(&nvram_pstore_info.buf_lock); rc = pstore_register(&nvram_pstore_info); - if (rc != 0) - pr_err("nvram: pstore_register() failed, defaults to " - "kmsg_dump; returned %d\n", rc); + if (rc && (rc != -EPERM)) + /* Print error only when pstore.backend == nvram */ + pr_err("nvram: pstore_register() failed, returned %d. " + "Defaults to kmsg_dump\n", rc); return rc; } diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index b9de34d44fcb..a1d0632d97c6 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -823,23 +823,15 @@ static void pcibios_fixup_resources(struct pci_dev *dev) (reg.start == 0 && !pci_has_flag(PCI_PROBE_ONLY))) { /* Only print message if not re-assigning */ if (!pci_has_flag(PCI_REASSIGN_ALL_RSRC)) - pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] " - "is unassigned\n", - pci_name(dev), i, - (unsigned long long)res->start, - (unsigned long long)res->end, - (unsigned int)res->flags); + pr_debug("PCI:%s Resource %d %pR is unassigned\n", + pci_name(dev), i, res); res->end -= res->start; res->start = 0; res->flags |= IORESOURCE_UNSET; continue; } - pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]\n", - pci_name(dev), i, - (unsigned long long)res->start,\ - (unsigned long long)res->end, - (unsigned int)res->flags); + pr_debug("PCI:%s Resource %d %pR\n", pci_name(dev), i, res); } /* Call machine specific resource fixup */ @@ -943,11 +935,7 @@ static void pcibios_fixup_bridge(struct pci_bus *bus) continue; } - pr_debug("PCI:%s Bus rsrc %d %016llx-%016llx [%x]\n", - pci_name(dev), i, - (unsigned long long)res->start,\ - (unsigned long long)res->end, - (unsigned int)res->flags); + pr_debug("PCI:%s Bus rsrc %d %pR\n", pci_name(dev), i, res); /* Try to detect uninitialized P2P bridge resources, * and clear them out so they get re-assigned later @@ -1044,13 +1032,7 @@ void pcibios_set_master(struct pci_dev *dev) void pcibios_fixup_bus(struct pci_bus *bus) { - /* When called from the generic PCI probe, read PCI<->PCI bridge - * bases. This is -not- called when generating the PCI tree from - * the OF device-tree. - */ - pci_read_bridge_bases(bus); - - /* Now fixup the bus bus */ + /* Fixup the bus */ pcibios_setup_bus_self(bus); /* Now fixup devices on that bus */ @@ -1132,10 +1114,8 @@ static int reparent_resources(struct resource *parent, *pp = NULL; for (p = res->child; p != NULL; p = p->sibling) { p->parent = res; - pr_debug("PCI: Reparented %s [%llx..%llx] under %s\n", - p->name, - (unsigned long long)p->start, - (unsigned long long)p->end, res->name); + pr_debug("PCI: Reparented %s %pR under %s\n", + p->name, p, res->name); } return 0; } @@ -1204,14 +1184,9 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus) } } - pr_debug("PCI: %s (bus %d) bridge rsrc %d: %016llx-%016llx " - "[0x%x], parent %p (%s)\n", - bus->self ? pci_name(bus->self) : "PHB", - bus->number, i, - (unsigned long long)res->start, - (unsigned long long)res->end, - (unsigned int)res->flags, - pr, (pr && pr->name) ? pr->name : "nil"); + pr_debug("PCI: %s (bus %d) bridge rsrc %d: %pR, parent %p (%s)\n", + bus->self ? pci_name(bus->self) : "PHB", bus->number, + i, res, pr, (pr && pr->name) ? pr->name : "nil"); if (pr && !(pr->flags & IORESOURCE_UNSET)) { struct pci_dev *dev = bus->self; @@ -1253,11 +1228,8 @@ static inline void alloc_resource(struct pci_dev *dev, int idx) { struct resource *pr, *r = &dev->resource[idx]; - pr_debug("PCI: Allocating %s: Resource %d: %016llx..%016llx [%x]\n", - pci_name(dev), idx, - (unsigned long long)r->start, - (unsigned long long)r->end, - (unsigned int)r->flags); + pr_debug("PCI: Allocating %s: Resource %d: %pR\n", + pci_name(dev), idx, r); pr = pci_find_parent_resource(dev, r); if (!pr || (pr->flags & IORESOURCE_UNSET) || @@ -1265,11 +1237,7 @@ static inline void alloc_resource(struct pci_dev *dev, int idx) printk(KERN_WARNING "PCI: Cannot allocate resource region %d" " of device %s, will remap\n", idx, pci_name(dev)); if (pr) - pr_debug("PCI: parent is %p: %016llx-%016llx [%x]\n", - pr, - (unsigned long long)pr->start, - (unsigned long long)pr->end, - (unsigned int)pr->flags); + pr_debug("PCI: parent is %p: %pR\n", pr, pr); /* We'll assign a new address later */ r->flags |= IORESOURCE_UNSET; r->end -= r->start; @@ -1431,12 +1399,8 @@ void pcibios_claim_one_bus(struct pci_bus *bus) if (r->parent || !r->start || !r->flags) continue; - pr_debug("PCI: Claiming %s: " - "Resource %d: %016llx..%016llx [%x]\n", - pci_name(dev), i, - (unsigned long long)r->start, - (unsigned long long)r->end, - (unsigned int)r->flags); + pr_debug("PCI: Claiming %s: Resource %d: %pR\n", + pci_name(dev), i, r); if (pci_claim_resource(dev, i) == 0) continue; @@ -1520,11 +1484,8 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, } else { offset = pcibios_io_space_offset(hose); - pr_debug("PCI: PHB IO resource = %08llx-%08llx [%lx] off 0x%08llx\n", - (unsigned long long)res->start, - (unsigned long long)res->end, - (unsigned long)res->flags, - (unsigned long long)offset); + pr_debug("PCI: PHB IO resource = %pR off 0x%08llx\n", + res, (unsigned long long)offset); pci_add_resource_offset(resources, res, offset); } @@ -1541,11 +1502,8 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, offset = hose->mem_offset[i]; - pr_debug("PCI: PHB MEM resource %d = %08llx-%08llx [%lx] off 0x%08llx\n", i, - (unsigned long long)res->start, - (unsigned long long)res->end, - (unsigned long)res->flags, - (unsigned long long)offset); + pr_debug("PCI: PHB MEM resource %d = %pR off 0x%08llx\n", i, + res, (unsigned long long)offset); pci_add_resource_offset(resources, res, offset); } diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c index 42e02a2d570b..2e710c15893f 100644 --- a/arch/powerpc/kernel/pci_of_scan.c +++ b/arch/powerpc/kernel/pci_of_scan.c @@ -102,7 +102,7 @@ static void of_pci_parse_addrs(struct device_node *node, struct pci_dev *dev) res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2]; } else if (i == dev->rom_base_reg) { res = &dev->resource[PCI_ROM_RESOURCE]; - flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE; + flags |= IORESOURCE_READONLY; } else { printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i); continue; @@ -126,7 +126,6 @@ struct pci_dev *of_create_pci_dev(struct device_node *node, { struct pci_dev *dev; const char *type; - struct pci_slot *slot; dev = pci_alloc_dev(bus); if (!dev) @@ -145,10 +144,7 @@ struct pci_dev *of_create_pci_dev(struct device_node *node, dev->needs_freset = 0; /* pcie fundamental reset required */ set_pcie_port_type(dev); - list_for_each_entry(slot, &dev->bus->slots, list) - if (PCI_SLOT(dev->devfn) == slot->number) - dev->slot = slot; - + pci_dev_assign_slot(dev); dev->vendor = get_int_prop(node, "vendor-id", 0xffff); dev->device = get_int_prop(node, "device-id", 0xffff); dev->subsystem_vendor = get_int_prop(node, "subsystem-vendor-id", 0); @@ -191,6 +187,9 @@ struct pci_dev *of_create_pci_dev(struct device_node *node, pci_device_add(dev, bus); + /* Setup MSI caps & disable MSI/MSI-X interrupts */ + pci_msi_setup_pci_dev(dev); + return dev; } EXPORT_SYMBOL(of_create_pci_dev); diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 8005e18d1b40..75b6676c1a0b 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -86,7 +86,7 @@ void giveup_fpu_maybe_transactional(struct task_struct *tsk) if (tsk == current && tsk->thread.regs && MSR_TM_ACTIVE(tsk->thread.regs->msr) && !test_thread_flag(TIF_RESTORE_TM)) { - tsk->thread.tm_orig_msr = tsk->thread.regs->msr; + tsk->thread.ckpt_regs.msr = tsk->thread.regs->msr; set_thread_flag(TIF_RESTORE_TM); } @@ -104,7 +104,7 @@ void giveup_altivec_maybe_transactional(struct task_struct *tsk) if (tsk == current && tsk->thread.regs && MSR_TM_ACTIVE(tsk->thread.regs->msr) && !test_thread_flag(TIF_RESTORE_TM)) { - tsk->thread.tm_orig_msr = tsk->thread.regs->msr; + tsk->thread.ckpt_regs.msr = tsk->thread.regs->msr; set_thread_flag(TIF_RESTORE_TM); } @@ -204,8 +204,6 @@ EXPORT_SYMBOL_GPL(flush_altivec_to_thread); #endif /* CONFIG_ALTIVEC */ #ifdef CONFIG_VSX -#if 0 -/* not currently used, but some crazy RAID module might want to later */ void enable_kernel_vsx(void) { WARN_ON(preemptible()); @@ -220,7 +218,6 @@ void enable_kernel_vsx(void) #endif /* CONFIG_SMP */ } EXPORT_SYMBOL(enable_kernel_vsx); -#endif void giveup_vsx(struct task_struct *tsk) { @@ -543,7 +540,7 @@ static void tm_reclaim_thread(struct thread_struct *thr, * the thread will no longer be transactional. */ if (test_ti_thread_flag(ti, TIF_RESTORE_TM)) { - msr_diff = thr->tm_orig_msr & ~thr->regs->msr; + msr_diff = thr->ckpt_regs.msr & ~thr->regs->msr; if (msr_diff & MSR_FP) memcpy(&thr->transact_fp, &thr->fp_state, sizeof(struct thread_fp_state)); @@ -594,10 +591,10 @@ static inline void tm_reclaim_task(struct task_struct *tsk) /* Stash the original thread MSR, as giveup_fpu et al will * modify it. We hold onto it to see whether the task used * FP & vector regs. If the TIF_RESTORE_TM flag is set, - * tm_orig_msr is already set. + * ckpt_regs.msr is already set. */ if (!test_ti_thread_flag(task_thread_info(tsk), TIF_RESTORE_TM)) - thr->tm_orig_msr = thr->regs->msr; + thr->ckpt_regs.msr = thr->regs->msr; TM_DEBUG("--- tm_reclaim on pid %d (NIP=%lx, " "ccr=%lx, msr=%lx, trap=%lx)\n", @@ -666,7 +663,7 @@ static inline void tm_recheckpoint_new_task(struct task_struct *new) tm_restore_sprs(&new->thread); return; } - msr = new->thread.tm_orig_msr; + msr = new->thread.ckpt_regs.msr; /* Recheckpoint to restore original checkpointed register state. */ TM_DEBUG("*** tm_recheckpoint of pid %d " "(new->msr 0x%lx, new->origmsr 0x%lx)\n", @@ -726,7 +723,7 @@ void restore_tm_state(struct pt_regs *regs) if (!MSR_TM_ACTIVE(regs->msr)) return; - msr_diff = current->thread.tm_orig_msr & ~regs->msr; + msr_diff = current->thread.ckpt_regs.msr & ~regs->msr; msr_diff &= MSR_FP | MSR_VEC | MSR_VSX; if (msr_diff & MSR_FP) { fp_enable(); diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 8b888b12a475..bef76c5033e4 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -218,22 +218,18 @@ static void __init check_cpu_pa_features(unsigned long node) } #ifdef CONFIG_PPC_STD_MMU_64 -static void __init check_cpu_slb_size(unsigned long node) +static void __init init_mmu_slb_size(unsigned long node) { const __be32 *slb_size_ptr; - slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL); - if (slb_size_ptr != NULL) { - mmu_slb_size = be32_to_cpup(slb_size_ptr); - return; - } - slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL); - if (slb_size_ptr != NULL) { + slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL) ? : + of_get_flat_dt_prop(node, "ibm,slb-size", NULL); + + if (slb_size_ptr) mmu_slb_size = be32_to_cpup(slb_size_ptr); - } } #else -#define check_cpu_slb_size(node) do { } while(0) +#define init_mmu_slb_size(node) do { } while(0) #endif static struct feature_property { @@ -380,7 +376,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node, check_cpu_feature_properties(node); check_cpu_pa_features(node); - check_cpu_slb_size(node); + init_mmu_slb_size(node); #ifdef CONFIG_PPC64 if (nthreads > 1) @@ -476,9 +472,10 @@ static int __init early_init_dt_scan_drconf_memory(unsigned long node) flags = of_read_number(&dm[3], 1); /* skip DRC index, pad, assoc. list index, flags */ dm += 4; - /* skip this block if the reserved bit is set in flags (0x80) - or if the block is not assigned to this partition (0x8) */ - if ((flags & 0x80) || !(flags & 0x8)) + /* skip this block if the reserved bit is set in flags + or if the block is not assigned to this partition */ + if ((flags & DRCONF_MEM_RESERVED) || + !(flags & DRCONF_MEM_ASSIGNED)) continue; size = memblock_size; rngs = 1; diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index fcca8077e6a2..15099c41622e 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -641,6 +641,15 @@ static void __init early_cmdline_parse(void) #define W(x) ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \ ((x) >> 8) & 0xff, (x) & 0xff +/* Firmware expects the value to be n - 1, where n is the # of vectors */ +#define NUM_VECTORS(n) ((n) - 1) + +/* + * Firmware expects 1 + n - 2, where n is the length of the option vector in + * bytes. The 1 accounts for the length byte itself, the - 2 .. ? + */ +#define VECTOR_LENGTH(n) (1 + (n) - 2) + unsigned char ibm_architecture_vec[] = { W(0xfffe0000), W(0x003a0000), /* POWER5/POWER5+ */ W(0xffff0000), W(0x003e0000), /* POWER6 */ @@ -651,16 +660,16 @@ unsigned char ibm_architecture_vec[] = { W(0xffffffff), W(0x0f000003), /* all 2.06-compliant */ W(0xffffffff), W(0x0f000002), /* all 2.05-compliant */ W(0xfffffffe), W(0x0f000001), /* all 2.04-compliant and earlier */ - 6 - 1, /* 6 option vectors */ + NUM_VECTORS(6), /* 6 option vectors */ /* option vector 1: processor architectures supported */ - 3 - 2, /* length */ + VECTOR_LENGTH(2), /* length */ 0, /* don't ignore, don't halt */ OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 | OV1_PPC_2_04 | OV1_PPC_2_05 | OV1_PPC_2_06 | OV1_PPC_2_07, /* option vector 2: Open Firmware options supported */ - 34 - 2, /* length */ + VECTOR_LENGTH(33), /* length */ OV2_REAL_MODE, 0, 0, W(0xffffffff), /* real_base */ @@ -674,17 +683,17 @@ unsigned char ibm_architecture_vec[] = { 48, /* max log_2(hash table size) */ /* option vector 3: processor options supported */ - 3 - 2, /* length */ + VECTOR_LENGTH(2), /* length */ 0, /* don't ignore, don't halt */ OV3_FP | OV3_VMX | OV3_DFP, /* option vector 4: IBM PAPR implementation */ - 3 - 2, /* length */ + VECTOR_LENGTH(2), /* length */ 0, /* don't halt */ OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */ /* option vector 5: PAPR/OF options */ - 19 - 2, /* length */ + VECTOR_LENGTH(18), /* length */ 0, /* don't ignore, don't halt */ OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) | OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) | @@ -717,12 +726,12 @@ unsigned char ibm_architecture_vec[] = { OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) | OV5_FEAT(OV5_PFO_HW_842), OV5_FEAT(OV5_SUB_PROCESSORS), + /* option vector 6: IBM PAPR hints */ - 4 - 2, /* length */ + VECTOR_LENGTH(3), /* length */ 0, 0, OV6_LINUX, - }; /* Old method - ELF header with PT_NOTE sections only works on BE */ diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index f21897b42057..737c0d0b53ac 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -1762,26 +1762,81 @@ long arch_ptrace(struct task_struct *child, long request, return ret; } -/* - * We must return the syscall number to actually look up in the table. - * This can be -1L to skip running any syscall at all. +#ifdef CONFIG_SECCOMP +static int do_seccomp(struct pt_regs *regs) +{ + if (!test_thread_flag(TIF_SECCOMP)) + return 0; + + /* + * The ABI we present to seccomp tracers is that r3 contains + * the syscall return value and orig_gpr3 contains the first + * syscall parameter. This is different to the ptrace ABI where + * both r3 and orig_gpr3 contain the first syscall parameter. + */ + regs->gpr[3] = -ENOSYS; + + /* + * We use the __ version here because we have already checked + * TIF_SECCOMP. If this fails, there is nothing left to do, we + * have already loaded -ENOSYS into r3, or seccomp has put + * something else in r3 (via SECCOMP_RET_ERRNO/TRACE). + */ + if (__secure_computing()) + return -1; + + /* + * The syscall was allowed by seccomp, restore the register + * state to what ptrace and audit expect. + * Note that we use orig_gpr3, which means a seccomp tracer can + * modify the first syscall parameter (in orig_gpr3) and also + * allow the syscall to proceed. + */ + regs->gpr[3] = regs->orig_gpr3; + + return 0; +} +#else +static inline int do_seccomp(struct pt_regs *regs) { return 0; } +#endif /* CONFIG_SECCOMP */ + +/** + * do_syscall_trace_enter() - Do syscall tracing on kernel entry. + * @regs: the pt_regs of the task to trace (current) + * + * Performs various types of tracing on syscall entry. This includes seccomp, + * ptrace, syscall tracepoints and audit. + * + * The pt_regs are potentially visible to userspace via ptrace, so their + * contents is ABI. + * + * One or more of the tracers may modify the contents of pt_regs, in particular + * to modify arguments or even the syscall number itself. + * + * It's also possible that a tracer can choose to reject the system call. In + * that case this function will return an illegal syscall number, and will put + * an appropriate return value in regs->r3. + * + * Return: the (possibly changed) syscall number. */ long do_syscall_trace_enter(struct pt_regs *regs) { - long ret = 0; + bool abort = false; user_exit(); - secure_computing_strict(regs->gpr[0]); + if (do_seccomp(regs)) + return -1; - if (test_thread_flag(TIF_SYSCALL_TRACE) && - tracehook_report_syscall_entry(regs)) + if (test_thread_flag(TIF_SYSCALL_TRACE)) { /* - * Tracing decided this syscall should not happen. - * We'll return a bogus call number to get an ENOSYS - * error, but leave the original number in regs->gpr[0]. + * The tracer may decide to abort the syscall, if so tracehook + * will return !0. Note that the tracer may also just change + * regs->gpr[0] to an invalid syscall number, that is handled + * below on the exit path. */ - ret = -1L; + abort = tracehook_report_syscall_entry(regs) != 0; + } if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) trace_sys_enter(regs, regs->gpr[0]); @@ -1798,7 +1853,17 @@ long do_syscall_trace_enter(struct pt_regs *regs) regs->gpr[5] & 0xffffffff, regs->gpr[6] & 0xffffffff); - return ret ?: regs->gpr[0]; + if (abort || regs->gpr[0] >= NR_syscalls) { + /* + * If we are aborting explicitly, or if the syscall number is + * now invalid, set the return value to -ENOSYS. + */ + regs->gpr[3] = -ENOSYS; + return -1; + } + + /* Return the possibly modified but valid syscall number */ + return regs->gpr[0]; } void do_syscall_trace_leave(struct pt_regs *regs) diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 7a488c108410..84bf934cf748 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -478,8 +478,9 @@ unsigned int rtas_busy_delay_time(int status) if (status == RTAS_BUSY) { ms = 1; - } else if (status >= 9900 && status <= 9905) { - order = status - 9900; + } else if (status >= RTAS_EXTENDED_DELAY_MIN && + status <= RTAS_EXTENDED_DELAY_MAX) { + order = status - RTAS_EXTENDED_DELAY_MIN; for (ms = 1; order > 0; order--) ms *= 10; } @@ -584,6 +585,23 @@ int rtas_get_sensor(int sensor, int index, int *state) } EXPORT_SYMBOL(rtas_get_sensor); +int rtas_get_sensor_fast(int sensor, int index, int *state) +{ + int token = rtas_token("get-sensor-state"); + int rc; + + if (token == RTAS_UNKNOWN_SERVICE) + return -ENOENT; + + rc = rtas_call(token, 2, 2, state, sensor, index); + WARN_ON(rc == RTAS_BUSY || (rc >= RTAS_EXTENDED_DELAY_MIN && + rc <= RTAS_EXTENDED_DELAY_MAX)); + + if (rc < 0) + return rtas_error_rc(rc); + return rc; +} + bool rtas_indicator_present(int token, int *maxindex) { int proplen, count, i; @@ -641,7 +659,8 @@ int rtas_set_indicator_fast(int indicator, int index, int new_value) rc = rtas_call(token, 3, 1, NULL, indicator, index, new_value); - WARN_ON(rc == -2 || (rc >= 9900 && rc <= 9905)); + WARN_ON(rc == RTAS_BUSY || (rc >= RTAS_EXTENDED_DELAY_MIN && + rc <= RTAS_EXTENDED_DELAY_MAX)); if (rc < 0) return rtas_error_rc(rc); diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index d3a831ac0f92..0dbee465af7a 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -949,6 +949,11 @@ int copy_siginfo_to_user32(struct compat_siginfo __user *d, const siginfo_t *s) err |= __put_user(s->si_overrun, &d->si_overrun); err |= __put_user(s->si_int, &d->si_int); break; + case __SI_SYS >> 16: + err |= __put_user(ptr_to_compat(s->si_call_addr), &d->si_call_addr); + err |= __put_user(s->si_syscall, &d->si_syscall); + err |= __put_user(s->si_arch, &d->si_arch); + break; case __SI_RT >> 16: /* This is not generated by the kernel as of now. */ case __SI_MESGQ >> 16: err |= __put_user(s->si_int, &d->si_int); @@ -966,8 +971,6 @@ int copy_siginfo_to_user32(struct compat_siginfo __user *d, const siginfo_t *s) 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)) diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index c7c24d2e2bdb..20756dfb9f34 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -74,6 +74,19 @@ static const char fmt64[] = KERN_INFO \ "%s[%d]: bad frame in %s: %016lx nip %016lx lr %016lx\n"; /* + * This computes a quad word aligned pointer inside the vmx_reserve array + * element. For historical reasons sigcontext might not be quad word aligned, + * but the location we write the VMX regs to must be. See the comment in + * sigcontext for more detail. + */ +#ifdef CONFIG_ALTIVEC +static elf_vrreg_t __user *sigcontext_vmx_regs(struct sigcontext __user *sc) +{ + return (elf_vrreg_t __user *) (((unsigned long)sc->vmx_reserve + 15) & ~0xful); +} +#endif + +/* * Set up the sigcontext for the signal frame. */ @@ -90,7 +103,7 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, * v_regs pointer or not */ #ifdef CONFIG_ALTIVEC - elf_vrreg_t __user *v_regs = (elf_vrreg_t __user *)(((unsigned long)sc->vmx_reserve + 15) & ~0xful); + elf_vrreg_t __user *v_regs = sigcontext_vmx_regs(sc); #endif unsigned long msr = regs->msr; long err = 0; @@ -181,10 +194,8 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc, * v_regs pointer or not. */ #ifdef CONFIG_ALTIVEC - elf_vrreg_t __user *v_regs = (elf_vrreg_t __user *) - (((unsigned long)sc->vmx_reserve + 15) & ~0xful); - elf_vrreg_t __user *tm_v_regs = (elf_vrreg_t __user *) - (((unsigned long)tm_sc->vmx_reserve + 15) & ~0xful); + elf_vrreg_t __user *v_regs = sigcontext_vmx_regs(sc); + elf_vrreg_t __user *tm_v_regs = sigcontext_vmx_regs(tm_sc); #endif unsigned long msr = regs->msr; long err = 0; diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 43922509a483..1be1092c7204 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -99,16 +99,17 @@ static struct clocksource clocksource_timebase = { static int decrementer_set_next_event(unsigned long evt, struct clock_event_device *dev); -static void decrementer_set_mode(enum clock_event_mode mode, - struct clock_event_device *dev); +static int decrementer_shutdown(struct clock_event_device *evt); struct clock_event_device decrementer_clockevent = { - .name = "decrementer", - .rating = 200, - .irq = 0, - .set_next_event = decrementer_set_next_event, - .set_mode = decrementer_set_mode, - .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_C3STOP, + .name = "decrementer", + .rating = 200, + .irq = 0, + .set_next_event = decrementer_set_next_event, + .set_state_shutdown = decrementer_shutdown, + .tick_resume = decrementer_shutdown, + .features = CLOCK_EVT_FEAT_ONESHOT | + CLOCK_EVT_FEAT_C3STOP, }; EXPORT_SYMBOL(decrementer_clockevent); @@ -862,11 +863,10 @@ static int decrementer_set_next_event(unsigned long evt, return 0; } -static void decrementer_set_mode(enum clock_event_mode mode, - struct clock_event_device *dev) +static int decrementer_shutdown(struct clock_event_device *dev) { - if (mode != CLOCK_EVT_MODE_ONESHOT) - decrementer_set_next_event(DECREMENTER_MAX, dev); + decrementer_set_next_event(DECREMENTER_MAX, dev); + return 0; } /* Interrupt handler for the timer broadcast IPI */ diff --git a/arch/powerpc/kernel/trace_clock.c b/arch/powerpc/kernel/trace_clock.c new file mode 100644 index 000000000000..49170690946d --- /dev/null +++ b/arch/powerpc/kernel/trace_clock.c @@ -0,0 +1,15 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * Copyright (C) 2015 Naveen N. Rao, IBM Corporation + */ + +#include <asm/trace_clock.h> +#include <asm/time.h> + +u64 notrace trace_clock_ppc_tb(void) +{ + return get_tb(); +} |