diff options
Diffstat (limited to 'arch')
32 files changed, 293 insertions, 111 deletions
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index fa98dae3cd98..eb20c3afff58 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -127,6 +127,10 @@ common_shutdown_1(void *generic_ptr) /* If booted from SRM, reset some of the original environment. */ if (alpha_using_srm) { #ifdef CONFIG_DUMMY_CONSOLE + /* If we've gotten here after SysRq-b, leave interrupt + context before taking over the console. */ + if (in_interrupt()) + irq_exit(); /* This has the effect of resetting the VGA video origin. */ take_over_console(&dummy_con, 0, MAX_NR_CONSOLES-1, 1); #endif diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 7152bfbee581..93b5e8e5292e 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -537,7 +537,7 @@ ENTRY(__switch_to) #ifdef CONFIG_CPU_MPCORE clrex #else - strex r3, r4, [ip] @ Clear exclusive monitor + strex r5, r4, [ip] @ Clear exclusive monitor #endif #endif #if defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_IWMMXT) diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c index 56405dbfd739..a18983a3c934 100644 --- a/arch/ia64/hp/sim/simscsi.c +++ b/arch/ia64/hp/sim/simscsi.c @@ -233,6 +233,23 @@ simscsi_readwrite10 (struct scsi_cmnd *sc, int mode) simscsi_readwrite(sc, mode, offset, ((sc->cmnd[7] << 8) | sc->cmnd[8])*512); } +static void simscsi_fillresult(struct scsi_cmnd *sc, char *buf, unsigned len) +{ + + int scatterlen = sc->use_sg; + struct scatterlist *slp; + + if (scatterlen == 0) + memcpy(sc->request_buffer, buf, len); + else for (slp = (struct scatterlist *)sc->buffer; scatterlen-- > 0 && len > 0; slp++) { + unsigned thislen = min(len, slp->length); + + memcpy(page_address(slp->page) + slp->offset, buf, thislen); + slp++; + len -= thislen; + } +} + static int simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) { @@ -240,6 +257,7 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) char fname[MAX_ROOT_LEN+16]; size_t disk_size; char *buf; + char localbuf[36]; #if DEBUG_SIMSCSI register long sp asm ("sp"); @@ -263,7 +281,7 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) /* disk doesn't exist... */ break; } - buf = sc->request_buffer; + buf = localbuf; buf[0] = 0; /* magnetic disk */ buf[1] = 0; /* not a removable medium */ buf[2] = 2; /* SCSI-2 compliant device */ @@ -273,6 +291,7 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) buf[6] = 0; /* reserved */ buf[7] = 0; /* various flags */ memcpy(buf + 8, "HP SIMULATED DISK 0.00", 28); + simscsi_fillresult(sc, buf, 36); sc->result = GOOD; break; @@ -304,16 +323,13 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) simscsi_readwrite10(sc, SSC_WRITE); break; - case READ_CAPACITY: if (desc[target_id] < 0 || sc->request_bufflen < 8) { break; } - buf = sc->request_buffer; - + buf = localbuf; disk_size = simscsi_get_disk_size(desc[target_id]); - /* pretend to be a 1GB disk (partition table contains real stuff): */ buf[0] = (disk_size >> 24) & 0xff; buf[1] = (disk_size >> 16) & 0xff; buf[2] = (disk_size >> 8) & 0xff; @@ -323,13 +339,14 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) buf[5] = 0; buf[6] = 2; buf[7] = 0; + simscsi_fillresult(sc, buf, 8); sc->result = GOOD; break; case MODE_SENSE: case MODE_SENSE_10: /* sd.c uses this to determine whether disk does write-caching. */ - memset(sc->request_buffer, 0, 128); + simscsi_fillresult(sc, (char *)empty_zero_page, sc->request_bufflen); sc->result = GOOD; break; diff --git a/arch/ia64/kernel/mca_asm.S b/arch/ia64/kernel/mca_asm.S index 499a065f4e60..db32fc1d3935 100644 --- a/arch/ia64/kernel/mca_asm.S +++ b/arch/ia64/kernel/mca_asm.S @@ -489,24 +489,27 @@ ia64_state_save: ;; st8 [temp1]=r17,16 // pal_min_state st8 [temp2]=r6,16 // prev_IA64_KR_CURRENT + mov r6=IA64_KR(CURRENT_STACK) + ;; + st8 [temp1]=r6,16 // prev_IA64_KR_CURRENT_STACK + st8 [temp2]=r0,16 // prev_task, starts off as NULL mov r6=cr.ifa ;; - st8 [temp1]=r0,16 // prev_task, starts off as NULL - st8 [temp2]=r12,16 // cr.isr + st8 [temp1]=r12,16 // cr.isr + st8 [temp2]=r6,16 // cr.ifa mov r12=cr.itir ;; - st8 [temp1]=r6,16 // cr.ifa - st8 [temp2]=r12,16 // cr.itir + st8 [temp1]=r12,16 // cr.itir + st8 [temp2]=r11,16 // cr.iipa mov r12=cr.iim ;; - st8 [temp1]=r11,16 // cr.iipa - st8 [temp2]=r12,16 // cr.iim - mov r6=cr.iha + st8 [temp1]=r12,16 // cr.iim (p1) mov r12=IA64_MCA_COLD_BOOT (p2) mov r12=IA64_INIT_WARM_BOOT + mov r6=cr.iha ;; - st8 [temp1]=r6,16 // cr.iha - st8 [temp2]=r12 // os_status, default is cold boot + st8 [temp2]=r6,16 // cr.iha + st8 [temp1]=r12 // os_status, default is cold boot mov r6=IA64_MCA_SAME_CONTEXT ;; st8 [temp1]=r6 // context, default is same context @@ -823,9 +826,12 @@ ia64_state_restore: ld8 r12=[temp1],16 // sal_ra ld8 r9=[temp2],16 // sal_gp ;; - ld8 r22=[temp1],24 // pal_min_state, virtual. skip prev_task + ld8 r22=[temp1],16 // pal_min_state, virtual ld8 r21=[temp2],16 // prev_IA64_KR_CURRENT ;; + ld8 r16=[temp1],16 // prev_IA64_KR_CURRENT_STACK + ld8 r20=[temp2],16 // prev_task + ;; ld8 temp3=[temp1],16 // cr.isr ld8 temp4=[temp2],16 // cr.ifa ;; @@ -846,6 +852,45 @@ ia64_state_restore: ld8 r8=[temp1] // os_status ld8 r10=[temp2] // context + /* Wire IA64_TR_CURRENT_STACK to the stack that we are resuming to. To + * avoid any dependencies on the algorithm in ia64_switch_to(), just + * purge any existing CURRENT_STACK mapping and insert the new one. + * + * r16 contains prev_IA64_KR_CURRENT_STACK, r21 contains + * prev_IA64_KR_CURRENT, these values may have been changed by the C + * code. Do not use r8, r9, r10, r22, they contain values ready for + * the return to SAL. + */ + + mov r15=IA64_KR(CURRENT_STACK) // physical granule mapped by IA64_TR_CURRENT_STACK + ;; + shl r15=r15,IA64_GRANULE_SHIFT + ;; + dep r15=-1,r15,61,3 // virtual granule + mov r18=IA64_GRANULE_SHIFT<<2 // for cr.itir.ps + ;; + ptr.d r15,r18 + ;; + srlz.d + + extr.u r19=r21,61,3 // r21 = prev_IA64_KR_CURRENT + shl r20=r16,IA64_GRANULE_SHIFT // r16 = prev_IA64_KR_CURRENT_STACK + movl r21=PAGE_KERNEL // page properties + ;; + mov IA64_KR(CURRENT_STACK)=r16 + cmp.ne p6,p0=RGN_KERNEL,r19 // new stack is in the kernel region? + or r21=r20,r21 // construct PA | page properties +(p6) br.spnt 1f // the dreaded cpu 0 idle task in region 5:( + ;; + mov cr.itir=r18 + mov cr.ifa=r21 + mov r20=IA64_TR_CURRENT_STACK + ;; + itr.d dtr[r20]=r21 + ;; + srlz.d +1: + br.sptk b0 //EndStub////////////////////////////////////////////////////////////////////// @@ -982,6 +1027,7 @@ ia64_set_kernel_registers: add temp4=temp4, temp1 // &struct ia64_sal_os_state.os_gp add r12=temp1, temp3 // kernel stack pointer on MCA/INIT stack add r13=temp1, r3 // set current to start of MCA/INIT stack + add r20=temp1, r3 // physical start of MCA/INIT stack ;; ld8 r1=[temp4] // OS GP from SAL OS state ;; @@ -991,7 +1037,35 @@ ia64_set_kernel_registers: ;; mov IA64_KR(CURRENT)=r13 - // FIXME: do I need to wire IA64_KR_CURRENT_STACK and IA64_TR_CURRENT_STACK? + /* Wire IA64_TR_CURRENT_STACK to the MCA/INIT handler stack. To avoid + * any dependencies on the algorithm in ia64_switch_to(), just purge + * any existing CURRENT_STACK mapping and insert the new one. + */ + + mov r16=IA64_KR(CURRENT_STACK) // physical granule mapped by IA64_TR_CURRENT_STACK + ;; + shl r16=r16,IA64_GRANULE_SHIFT + ;; + dep r16=-1,r16,61,3 // virtual granule + mov r18=IA64_GRANULE_SHIFT<<2 // for cr.itir.ps + ;; + ptr.d r16,r18 + ;; + srlz.d + + shr.u r16=r20,IA64_GRANULE_SHIFT // r20 = physical start of MCA/INIT stack + movl r21=PAGE_KERNEL // page properties + ;; + mov IA64_KR(CURRENT_STACK)=r16 + or r21=r20,r21 // construct PA | page properties + ;; + mov cr.itir=r18 + mov cr.ifa=r13 + mov r20=IA64_TR_CURRENT_STACK + ;; + itr.d dtr[r20]=r21 + ;; + srlz.d br.sptk b0 diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c index 80f83d6cdbfc..f081c60ab206 100644 --- a/arch/ia64/kernel/mca_drv.c +++ b/arch/ia64/kernel/mca_drv.c @@ -56,8 +56,9 @@ static struct page *page_isolate[MAX_PAGE_ISOLATE]; static int num_page_isolate = 0; typedef enum { - ISOLATE_NG = 0, - ISOLATE_OK = 1 + ISOLATE_NG, + ISOLATE_OK, + ISOLATE_NONE } isolate_status_t; /* @@ -74,7 +75,7 @@ static struct { * @paddr: poisoned memory location * * Return value: - * ISOLATE_OK / ISOLATE_NG + * one of isolate_status_t, ISOLATE_OK/NG/NONE. */ static isolate_status_t @@ -85,7 +86,10 @@ mca_page_isolate(unsigned long paddr) /* whether physical address is valid or not */ if (!ia64_phys_addr_valid(paddr)) - return ISOLATE_NG; + return ISOLATE_NONE; + + if (!pfn_valid(paddr)) + return ISOLATE_NONE; /* convert physical address to physical page number */ p = pfn_to_page(paddr>>PAGE_SHIFT); @@ -122,10 +126,15 @@ mca_handler_bh(unsigned long paddr) current->pid, current->comm); spin_lock(&mca_bh_lock); - if (mca_page_isolate(paddr) == ISOLATE_OK) { + switch (mca_page_isolate(paddr)) { + case ISOLATE_OK: printk(KERN_DEBUG "Page isolation: ( %lx ) success.\n", paddr); - } else { + break; + case ISOLATE_NG: printk(KERN_DEBUG "Page isolation: ( %lx ) failure.\n", paddr); + break; + default: + break; } spin_unlock(&mca_bh_lock); diff --git a/arch/ppc/kernel/Makefile b/arch/ppc/kernel/Makefile index 1fb92f16acd6..b1457a8a9c0f 100644 --- a/arch/ppc/kernel/Makefile +++ b/arch/ppc/kernel/Makefile @@ -15,9 +15,8 @@ extra-y += vmlinux.lds obj-y := entry.o traps.o irq.o idle.o time.o misc.o \ process.o signal.o ptrace.o align.o \ semaphore.o syscalls.o setup.o \ - cputable.o ppc_htab.o + cputable.o ppc_htab.o perfmon.o obj-$(CONFIG_6xx) += l2cr.o cpu_setup_6xx.o -obj-$(CONFIG_E500) += perfmon.o obj-$(CONFIG_SOFTWARE_SUSPEND) += swsusp.o obj-$(CONFIG_POWER4) += cpu_setup_power4.o obj-$(CONFIG_MODULES) += module.o ppc_ksyms.o diff --git a/arch/ppc/kernel/perfmon.c b/arch/ppc/kernel/perfmon.c index fa1dad96b830..04c18788e85f 100644 --- a/arch/ppc/kernel/perfmon.c +++ b/arch/ppc/kernel/perfmon.c @@ -45,7 +45,7 @@ static void dummy_perf(struct pt_regs *regs) mtpmr(PMRN_PMGC0, pmgc0); } -#else +#elif CONFIG_6xx /* Ensure exceptions are disabled */ static void dummy_perf(struct pt_regs *regs) @@ -55,6 +55,10 @@ static void dummy_perf(struct pt_regs *regs) mmcr0 &= ~MMCR0_PMXE; mtspr(SPRN_MMCR0, mmcr0); } +#else +static void dummy_perf(struct pt_regs *regs) +{ +} #endif void (*perf_irq)(struct pt_regs *) = dummy_perf; diff --git a/arch/ppc/platforms/pmac_setup.c b/arch/ppc/platforms/pmac_setup.c index b392b9a15987..4c56a4734aec 100644 --- a/arch/ppc/platforms/pmac_setup.c +++ b/arch/ppc/platforms/pmac_setup.c @@ -719,7 +719,8 @@ pmac_declare_of_platform_devices(void) if (np) { for (np = np->child; np != NULL; np = np->sibling) if (strncmp(np->name, "i2c", 3) == 0) { - of_platform_device_create(np, "uni-n-i2c"); + of_platform_device_create(np, "uni-n-i2c", + NULL); break; } } @@ -727,17 +728,18 @@ pmac_declare_of_platform_devices(void) if (np) { for (np = np->child; np != NULL; np = np->sibling) if (strncmp(np->name, "i2c", 3) == 0) { - of_platform_device_create(np, "u3-i2c"); + of_platform_device_create(np, "u3-i2c", + NULL); break; } } np = find_devices("valkyrie"); if (np) - of_platform_device_create(np, "valkyrie"); + of_platform_device_create(np, "valkyrie", NULL); np = find_devices("platinum"); if (np) - of_platform_device_create(np, "platinum"); + of_platform_device_create(np, "platinum", NULL); return 0; } diff --git a/arch/ppc/syslib/of_device.c b/arch/ppc/syslib/of_device.c index da8a0f2128dc..93c7231ea709 100644 --- a/arch/ppc/syslib/of_device.c +++ b/arch/ppc/syslib/of_device.c @@ -234,7 +234,9 @@ void of_device_unregister(struct of_device *ofdev) device_unregister(&ofdev->dev); } -struct of_device* of_platform_device_create(struct device_node *np, const char *bus_id) +struct of_device* of_platform_device_create(struct device_node *np, + const char *bus_id, + struct device *parent) { struct of_device *dev; u32 *reg; @@ -247,7 +249,7 @@ struct of_device* of_platform_device_create(struct device_node *np, const char * dev->node = of_node_get(np); dev->dma_mask = 0xffffffffUL; dev->dev.dma_mask = &dev->dma_mask; - dev->dev.parent = NULL; + dev->dev.parent = parent; dev->dev.bus = &of_platform_bus_type; dev->dev.release = of_release_dev; diff --git a/arch/ppc64/kernel/of_device.c b/arch/ppc64/kernel/of_device.c index da580812ddfe..9f200f0f2ad5 100644 --- a/arch/ppc64/kernel/of_device.c +++ b/arch/ppc64/kernel/of_device.c @@ -233,7 +233,9 @@ void of_device_unregister(struct of_device *ofdev) device_unregister(&ofdev->dev); } -struct of_device* of_platform_device_create(struct device_node *np, const char *bus_id) +struct of_device* of_platform_device_create(struct device_node *np, + const char *bus_id, + struct device *parent) { struct of_device *dev; @@ -245,7 +247,7 @@ struct of_device* of_platform_device_create(struct device_node *np, const char * dev->node = np; dev->dma_mask = 0xffffffffUL; dev->dev.dma_mask = &dev->dma_mask; - dev->dev.parent = NULL; + dev->dev.parent = parent; dev->dev.bus = &of_platform_bus_type; dev->dev.release = of_release_dev; @@ -259,6 +261,7 @@ struct of_device* of_platform_device_create(struct device_node *np, const char * return dev; } + EXPORT_SYMBOL(of_match_device); EXPORT_SYMBOL(of_platform_bus_type); EXPORT_SYMBOL(of_register_driver); diff --git a/arch/ppc64/kernel/pSeries_iommu.c b/arch/ppc64/kernel/pSeries_iommu.c index 8c6313e7e145..d17f0108a032 100644 --- a/arch/ppc64/kernel/pSeries_iommu.c +++ b/arch/ppc64/kernel/pSeries_iommu.c @@ -364,7 +364,8 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus) while (pci->phb->dma_window_size * children > 0x80000000ul) pci->phb->dma_window_size >>= 1; - DBG("No ISA/IDE, window size is %x\n", pci->phb->dma_window_size); + DBG("No ISA/IDE, window size is 0x%lx\n", + pci->phb->dma_window_size); pci->phb->dma_window_base_cur = 0; return; @@ -388,7 +389,7 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus) while (pci->phb->dma_window_size * children > 0x70000000ul) pci->phb->dma_window_size >>= 1; - DBG("ISA/IDE, window size is %x\n", pci->phb->dma_window_size); + DBG("ISA/IDE, window size is 0x%lx\n", pci->phb->dma_window_size); } @@ -442,7 +443,7 @@ static void iommu_dev_setup_pSeries(struct pci_dev *dev) struct device_node *dn, *mydn; struct iommu_table *tbl; - DBG("iommu_dev_setup_pSeries, dev %p (%s)\n", dev, dev->pretty_name); + DBG("iommu_dev_setup_pSeries, dev %p (%s)\n", dev, pci_name(dev)); mydn = dn = pci_device_to_OF_node(dev); @@ -469,7 +470,7 @@ static void iommu_dev_setup_pSeries(struct pci_dev *dev) if (dn && dn->data) { PCI_DN(mydn)->iommu_table = PCI_DN(dn)->iommu_table; } else { - DBG("iommu_dev_setup_pSeries, dev %p (%s) has no iommu table\n", dev, dev->pretty_name); + DBG("iommu_dev_setup_pSeries, dev %p (%s) has no iommu table\n", dev, pci_name(dev)); } } @@ -503,7 +504,7 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev) int *dma_window = NULL; struct pci_dn *pci; - DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, dev->pretty_name); + DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, pci_name(dev)); /* dev setup for LPAR is a little tricky, since the device tree might * contain the dma-window properties per-device and not neccesarily @@ -525,9 +526,8 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev) * slots on POWER4 machines. */ if (dma_window == NULL || pdn->parent == NULL) { - /* Fall back to regular (non-LPAR) dev setup */ - DBG("No dma window for device, falling back to regular setup\n"); - iommu_dev_setup_pSeries(dev); + DBG("No dma window for device, linking to parent\n"); + PCI_DN(dn)->iommu_table = PCI_DN(pdn)->iommu_table; return; } else { DBG("Found DMA window, allocating table\n"); diff --git a/arch/ppc64/kernel/pmac_setup.c b/arch/ppc64/kernel/pmac_setup.c index 325426c7bed0..25755252067a 100644 --- a/arch/ppc64/kernel/pmac_setup.c +++ b/arch/ppc64/kernel/pmac_setup.c @@ -434,15 +434,23 @@ static int pmac_check_legacy_ioport(unsigned int baseport) static int __init pmac_declare_of_platform_devices(void) { - struct device_node *np; + struct device_node *np, *npp; - np = find_devices("u3"); - if (np) { - for (np = np->child; np != NULL; np = np->sibling) + npp = of_find_node_by_name(NULL, "u3"); + if (npp) { + for (np = NULL; (np = of_get_next_child(npp, np)) != NULL;) { if (strncmp(np->name, "i2c", 3) == 0) { - of_platform_device_create(np, "u3-i2c"); + of_platform_device_create(np, "u3-i2c", NULL); + of_node_put(np); break; } + } + of_node_put(npp); + } + npp = of_find_node_by_type(NULL, "smu"); + if (npp) { + of_platform_device_create(npp, "smu", NULL); + of_node_put(npp); } return 0; diff --git a/arch/ppc64/kernel/pmac_time.c b/arch/ppc64/kernel/pmac_time.c index 3059edb09cc8..41bbb8c59697 100644 --- a/arch/ppc64/kernel/pmac_time.c +++ b/arch/ppc64/kernel/pmac_time.c @@ -84,7 +84,7 @@ void __pmac pmac_get_rtc_time(struct rtc_time *tm) #ifdef CONFIG_PMAC_SMU case SYS_CTRLER_SMU: - smu_get_rtc_time(tm); + smu_get_rtc_time(tm, 1); break; #endif /* CONFIG_PMAC_SMU */ default: @@ -128,7 +128,7 @@ int __pmac pmac_set_rtc_time(struct rtc_time *tm) #ifdef CONFIG_PMAC_SMU case SYS_CTRLER_SMU: - return smu_set_rtc_time(tm); + return smu_set_rtc_time(tm, 1); #endif /* CONFIG_PMAC_SMU */ default: return -ENODEV; diff --git a/arch/ppc64/kernel/ptrace.c b/arch/ppc64/kernel/ptrace.c index 85ed3188a91d..b1c044ca5756 100644 --- a/arch/ppc64/kernel/ptrace.c +++ b/arch/ppc64/kernel/ptrace.c @@ -219,6 +219,7 @@ int sys_ptrace(long request, long pid, long addr, long data) case PTRACE_SET_DEBUGREG: ret = ptrace_set_debugreg(child, addr, data); + break; case PTRACE_DETACH: ret = ptrace_detach(child, data); diff --git a/arch/ppc64/mm/hash_native.c b/arch/ppc64/mm/hash_native.c index 7626bb59954d..eb1bbb5b6c16 100644 --- a/arch/ppc64/mm/hash_native.c +++ b/arch/ppc64/mm/hash_native.c @@ -343,9 +343,7 @@ static void native_flush_hash_range(unsigned long context, hpte_t *hptep; unsigned long hpte_v; struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch); - - /* XXX fix for large ptes */ - unsigned long large = 0; + unsigned long large; local_irq_save(flags); @@ -358,6 +356,7 @@ static void native_flush_hash_range(unsigned long context, va = (vsid << 28) | (batch->addr[i] & 0x0fffffff); batch->vaddr[j] = va; + large = pte_huge(batch->pte[i]); if (large) vpn = va >> HPAGE_SHIFT; else diff --git a/arch/ppc64/mm/hugetlbpage.c b/arch/ppc64/mm/hugetlbpage.c index 338771ec70d7..0ea0994ed974 100644 --- a/arch/ppc64/mm/hugetlbpage.c +++ b/arch/ppc64/mm/hugetlbpage.c @@ -710,10 +710,13 @@ repeat: hpte_group = ((~hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; slot = ppc_md.hpte_insert(hpte_group, va, prpn, - HPTE_V_LARGE, rflags); + HPTE_V_LARGE | + HPTE_V_SECONDARY, + rflags); if (slot == -1) { if (mftb() & 0x1) - hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = ((hash & htab_hash_mask) * + HPTES_PER_GROUP)&~0x7UL; ppc_md.hpte_remove(hpte_group); goto repeat; diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c index 14a12d6b3df6..16e7dc89f61d 100644 --- a/arch/um/drivers/chan_kern.c +++ b/arch/um/drivers/chan_kern.c @@ -19,18 +19,44 @@ #include "line.h" #include "os.h" -#ifdef CONFIG_NOCONFIG_CHAN +/* XXX: could well be moved to somewhere else, if needed. */ +static int my_printf(const char * fmt, ...) + __attribute__ ((format (printf, 1, 2))); + +static int my_printf(const char * fmt, ...) +{ + /* Yes, can be called on atomic context.*/ + char *buf = kmalloc(4096, GFP_ATOMIC); + va_list args; + int r; + + if (!buf) { + /* We print directly fmt. + * Yes, yes, yes, feel free to complain. */ + r = strlen(fmt); + } else { + va_start(args, fmt); + r = vsprintf(buf, fmt, args); + va_end(args); + fmt = buf; + } -/* The printk's here are wrong because we are complaining that there is no - * output device, but printk is printing to that output device. The user will - * never see the error. printf would be better, except it can't run on a - * kernel stack because it will overflow it. - * Use printk for now since that will avoid crashing. - */ + if (r) + r = os_write_file(1, fmt, r); + return r; + +} + +#ifdef CONFIG_NOCONFIG_CHAN +/* Despite its name, there's no added trailing newline. */ +static int my_puts(const char * buf) +{ + return os_write_file(1, buf, strlen(buf)); +} static void *not_configged_init(char *str, int device, struct chan_opts *opts) { - printk(KERN_ERR "Using a channel type which is configured out of " + my_puts("Using a channel type which is configured out of " "UML\n"); return(NULL); } @@ -38,27 +64,27 @@ static void *not_configged_init(char *str, int device, struct chan_opts *opts) static int not_configged_open(int input, int output, int primary, void *data, char **dev_out) { - printk(KERN_ERR "Using a channel type which is configured out of " + my_puts("Using a channel type which is configured out of " "UML\n"); return(-ENODEV); } static void not_configged_close(int fd, void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + my_puts("Using a channel type which is configured out of " "UML\n"); } static int not_configged_read(int fd, char *c_out, void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + my_puts("Using a channel type which is configured out of " "UML\n"); return(-EIO); } static int not_configged_write(int fd, const char *buf, int len, void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + my_puts("Using a channel type which is configured out of " "UML\n"); return(-EIO); } @@ -66,7 +92,7 @@ static int not_configged_write(int fd, const char *buf, int len, void *data) static int not_configged_console_write(int fd, const char *buf, int len, void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + my_puts("Using a channel type which is configured out of " "UML\n"); return(-EIO); } @@ -74,14 +100,14 @@ static int not_configged_console_write(int fd, const char *buf, int len, static int not_configged_window_size(int fd, void *data, unsigned short *rows, unsigned short *cols) { - printk(KERN_ERR "Using a channel type which is configured out of " + my_puts("Using a channel type which is configured out of " "UML\n"); return(-ENODEV); } static void not_configged_free(void *data) { - printf(KERN_ERR "Using a channel type which is configured out of " + my_puts("Using a channel type which is configured out of " "UML\n"); } @@ -457,7 +483,7 @@ static struct chan *parse_chan(char *str, int pri, int device, } } if(ops == NULL){ - printk(KERN_ERR "parse_chan couldn't parse \"%s\"\n", + my_printf("parse_chan couldn't parse \"%s\"\n", str); return(NULL); } @@ -465,7 +491,7 @@ static struct chan *parse_chan(char *str, int pri, int device, data = (*ops->init)(str, device, opts); if(data == NULL) return(NULL); - chan = kmalloc(sizeof(*chan), GFP_KERNEL); + chan = kmalloc(sizeof(*chan), GFP_ATOMIC); if(chan == NULL) return(NULL); *chan = ((struct chan) { .list = LIST_HEAD_INIT(chan->list), .primary = 1, diff --git a/arch/um/drivers/mconsole_user.c b/arch/um/drivers/mconsole_user.c index 310c1f823f26..04383f98f4d5 100644 --- a/arch/um/drivers/mconsole_user.c +++ b/arch/um/drivers/mconsole_user.c @@ -23,7 +23,7 @@ static struct mconsole_command commands[] = { { "reboot", mconsole_reboot, MCONSOLE_PROC }, { "config", mconsole_config, MCONSOLE_PROC }, { "remove", mconsole_remove, MCONSOLE_PROC }, - { "sysrq", mconsole_sysrq, MCONSOLE_INTR }, + { "sysrq", mconsole_sysrq, MCONSOLE_PROC }, { "help", mconsole_help, MCONSOLE_INTR }, { "cad", mconsole_cad, MCONSOLE_INTR }, { "stop", mconsole_stop, MCONSOLE_PROC }, diff --git a/arch/um/include/user.h b/arch/um/include/user.h index 57ee9e261228..0f865ef46918 100644 --- a/arch/um/include/user.h +++ b/arch/um/include/user.h @@ -14,7 +14,9 @@ extern void *um_kmalloc_atomic(int size); extern void kfree(void *ptr); extern int in_aton(char *str); extern int open_gdb_chan(void); -extern int strlcpy(char *, const char *, int); +/* These use size_t, however unsigned long is correct on both i386 and x86_64. */ +extern unsigned long strlcpy(char *, const char *, unsigned long); +extern unsigned long strlcat(char *, const char *, unsigned long); extern void *um_vmalloc(int size); extern void vfree(void *ptr); diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c index 39cf568ccfaf..ea65db679e9c 100644 --- a/arch/um/kernel/process_kern.c +++ b/arch/um/kernel/process_kern.c @@ -82,7 +82,8 @@ unsigned long alloc_stack(int order, int atomic) unsigned long page; int flags = GFP_KERNEL; - if(atomic) flags |= GFP_ATOMIC; + if (atomic) + flags = GFP_ATOMIC; page = __get_free_pages(flags, order); if(page == 0) return(0); diff --git a/arch/um/kernel/sigio_user.c b/arch/um/kernel/sigio_user.c index e89218958f38..a52751108aa1 100644 --- a/arch/um/kernel/sigio_user.c +++ b/arch/um/kernel/sigio_user.c @@ -340,7 +340,7 @@ static int setup_initial_poll(int fd) { struct pollfd *p; - p = um_kmalloc(sizeof(struct pollfd)); + p = um_kmalloc_atomic(sizeof(struct pollfd)); if(p == NULL){ printk("setup_initial_poll : failed to allocate poll\n"); return(-1); diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index 0a562c3c0fd8..f5b0636f9ad7 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -193,12 +193,12 @@ void fix_range_common(struct mm_struct *mm, unsigned long start_addr, r = pte_read(*npte); w = pte_write(*npte); x = pte_exec(*npte); - if(!pte_dirty(*npte)) - w = 0; - if(!pte_young(*npte)){ - r = 0; - w = 0; - } + if (!pte_young(*npte)) { + r = 0; + w = 0; + } else if (!pte_dirty(*npte)) { + w = 0; + } if(force || pte_newpage(*npte)){ if(pte_present(*npte)) ret = add_mmap(addr, diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c index 87cc6fd76ced..d297429ac360 100644 --- a/arch/um/kernel/trap_kern.c +++ b/arch/um/kernel/trap_kern.c @@ -18,6 +18,7 @@ #include "asm/a.out.h" #include "asm/current.h" #include "asm/irq.h" +#include "sysdep/sigcontext.h" #include "user_util.h" #include "kern_util.h" #include "kern.h" @@ -39,6 +40,12 @@ int handle_page_fault(unsigned long address, unsigned long ip, int err = -EFAULT; *code_out = SEGV_MAPERR; + + /* If the fault was during atomic operation, don't take the fault, just + * fail. */ + if (in_atomic()) + goto out_nosemaphore; + down_read(&mm->mmap_sem); vma = find_vma(mm, address); if(!vma) @@ -89,6 +96,7 @@ survive: flush_tlb_page(vma, address); out: up_read(&mm->mmap_sem); +out_nosemaphore: return(err); /* @@ -125,7 +133,15 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc) } else if(current->mm == NULL) panic("Segfault with no mm"); - err = handle_page_fault(address, ip, is_write, is_user, &si.si_code); + + if (SEGV_IS_FIXABLE(&fi)) + err = handle_page_fault(address, ip, is_write, is_user, &si.si_code); + else { + err = -EFAULT; + /* A thread accessed NULL, we get a fault, but CR2 is invalid. + * This code is used in __do_copy_from_user() of TT mode. */ + address = 0; + } catcher = current->thread.fault_catcher; if(!err) diff --git a/arch/um/kernel/tt/uaccess_user.c b/arch/um/kernel/tt/uaccess_user.c index f01475512ecb..8c220f054b61 100644 --- a/arch/um/kernel/tt/uaccess_user.c +++ b/arch/um/kernel/tt/uaccess_user.c @@ -22,8 +22,15 @@ int __do_copy_from_user(void *to, const void *from, int n, __do_copy, &faulted); TASK_REGS(get_current())->tt = save; - if(!faulted) return(0); - else return(n - (fault - (unsigned long) from)); + if(!faulted) + return 0; + else if (fault) + return n - (fault - (unsigned long) from); + else + /* In case of a general protection fault, we don't have the + * fault address, so NULL is used instead. Pretend we didn't + * copy anything. */ + return n; } static void __do_strncpy(void *dst, const void *src, int count) diff --git a/arch/um/kernel/umid.c b/arch/um/kernel/umid.c index 186c28885016..0b21d59ba0cd 100644 --- a/arch/um/kernel/umid.c +++ b/arch/um/kernel/umid.c @@ -31,6 +31,8 @@ static char *uml_dir = UML_DIR; /* Changed by set_umid */ static int umid_is_random = 1; static int umid_inited = 0; +/* Have we created the files? Should we remove them? */ +static int umid_owned = 0; static int make_umid(int (*printer)(const char *fmt, ...)); @@ -82,20 +84,21 @@ int __init umid_file_name(char *name, char *buf, int len) extern int tracing_pid; -static int __init create_pid_file(void) +static void __init create_pid_file(void) { char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")]; char pid[sizeof("nnnnn\0")]; int fd, n; - if(umid_file_name("pid", file, sizeof(file))) return 0; + if(umid_file_name("pid", file, sizeof(file))) + return; fd = os_open_file(file, of_create(of_excl(of_rdwr(OPENFLAGS()))), 0644); if(fd < 0){ printf("Open of machine pid file \"%s\" failed: %s\n", file, strerror(-fd)); - return 0; + return; } sprintf(pid, "%d\n", os_getpid()); @@ -103,7 +106,6 @@ static int __init create_pid_file(void) if(n != strlen(pid)) printf("Write of pid file failed - err = %d\n", -n); os_close_file(fd); - return 0; } static int actually_do_remove(char *dir) @@ -147,7 +149,8 @@ static int actually_do_remove(char *dir) void remove_umid_dir(void) { char dir[strlen(uml_dir) + UMID_LEN + 1]; - if(!umid_inited) return; + if (!umid_owned) + return; sprintf(dir, "%s%s", uml_dir, umid); actually_do_remove(dir); @@ -155,11 +158,12 @@ void remove_umid_dir(void) char *get_umid(int only_if_set) { - if(only_if_set && umid_is_random) return(NULL); - return(umid); + if(only_if_set && umid_is_random) + return NULL; + return umid; } -int not_dead_yet(char *dir) +static int not_dead_yet(char *dir) { char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")]; char pid[sizeof("nnnnn\0")], *end; @@ -193,7 +197,8 @@ int not_dead_yet(char *dir) (p == CHOOSE_MODE(tracing_pid, os_getpid()))) dead = 1; } - if(!dead) return(1); + if(!dead) + return(1); return(actually_do_remove(dir)); } @@ -232,16 +237,13 @@ static int __init make_uml_dir(void) strlcpy(dir, home, sizeof(dir)); uml_dir++; } + strlcat(dir, uml_dir, sizeof(dir)); len = strlen(dir); - strncat(dir, uml_dir, sizeof(dir) - len); - len = strlen(dir); - if((len > 0) && (len < sizeof(dir) - 1) && (dir[len - 1] != '/')){ - dir[len] = '/'; - dir[len + 1] = '\0'; - } + if (len > 0 && dir[len - 1] != '/') + strlcat(dir, "/", sizeof(dir)); uml_dir = malloc(strlen(dir) + 1); - if(uml_dir == NULL){ + if (uml_dir == NULL) { printf("make_uml_dir : malloc failed, errno = %d\n", errno); exit(1); } @@ -286,6 +288,7 @@ static int __init make_umid(int (*printer)(const char *fmt, ...)) if(errno == EEXIST){ if(not_dead_yet(tmp)){ (*printer)("umid '%s' is in use\n", umid); + umid_owned = 0; return(-1); } err = mkdir(tmp, 0777); @@ -296,7 +299,8 @@ static int __init make_umid(int (*printer)(const char *fmt, ...)) return(-1); } - return(0); + umid_owned = 1; + return 0; } __uml_setup("uml_dir=", set_uml_dir, @@ -309,7 +313,8 @@ static int __init make_umid_setup(void) /* one function with the ordering we need ... */ make_uml_dir(); make_umid(printf); - return create_pid_file(); + create_pid_file(); + return 0; } __uml_postsetup(make_umid_setup); diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c index 09887c96e9a1..de19501aa809 100644 --- a/arch/xtensa/kernel/pci.c +++ b/arch/xtensa/kernel/pci.c @@ -402,8 +402,8 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, __pci_mmap_set_flags(dev, vma, mmap_state); __pci_mmap_set_pgprot(dev, vma, mmap_state, write_combine); - ret = io_remap_page_range(vma, vma->vm_start, vma->vm_pgoff<<PAGE_SHIFT, - vma->vm_end - vma->vm_start, vma->vm_page_prot); + ret = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, + vma->vm_end - vma->vm_start,vma->vm_page_prot); return ret; } diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c index cf1362784443..03674daabc66 100644 --- a/arch/xtensa/kernel/platform.c +++ b/arch/xtensa/kernel/platform.c @@ -39,7 +39,7 @@ _F(int, pcibios_fixup, (void), { return 0; }); _F(int, get_rtc_time, (time_t* t), { return 0; }); _F(int, set_rtc_time, (time_t t), { return 0; }); -#if CONFIG_XTENSA_CALIBRATE_CCOUNT +#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT _F(void, calibrate_ccount, (void), { printk ("ERROR: Cannot calibrate cpu frequency! Assuming 100MHz.\n"); diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c index c83bb0d41787..08ef6d82ee51 100644 --- a/arch/xtensa/kernel/process.c +++ b/arch/xtensa/kernel/process.c @@ -457,7 +457,7 @@ int dump_task_fpu(struct pt_regs *regs, struct task_struct *task, elf_fpregset_t *r) { /* see asm/coprocessor.h for this magic number 16 */ -#if TOTAL_CPEXTRA_SIZE > 16 +#if XTENSA_CP_EXTRA_SIZE > 16 do_save_fpregs (r, regs, task); /* For now, bit 16 means some extra state may be present: */ diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index 1f5bf5d624e4..513ed8d67766 100644 --- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -304,7 +304,7 @@ void __init setup_arch(char **cmdline_p) # endif #endif -#if CONFIG_PCI +#ifdef CONFIG_PCI platform_pcibios_init(); #endif } diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c index dc42cede9394..e252b61e45a5 100644 --- a/arch/xtensa/kernel/signal.c +++ b/arch/xtensa/kernel/signal.c @@ -182,7 +182,7 @@ restore_cpextra (struct _cpstate *buf) struct task_struct *tsk = current; release_all_cp(tsk); - return __copy_from_user(tsk->thread.cpextra, buf, TOTAL_CPEXTRA_SIZE); + return __copy_from_user(tsk->thread.cpextra, buf, XTENSA_CP_EXTRA_SIZE); #endif return 0; } diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c index 1ac7d5ce7456..8e423d1335ce 100644 --- a/arch/xtensa/kernel/time.c +++ b/arch/xtensa/kernel/time.c @@ -68,7 +68,7 @@ void __init time_init(void) * speed for the CALIBRATE. */ -#if CONFIG_XTENSA_CALIBRATE_CCOUNT +#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT printk("Calibrating CPU frequency "); platform_calibrate_ccount(); printk("%d.%02d MHz\n", (int)ccount_per_jiffy/(1000000/HZ), diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 56aace84aaeb..5a91d6c9e66d 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -239,7 +239,7 @@ void __init mem_init(void) high_memory = (void *) __va(max_mapnr << PAGE_SHIFT); highmemsize = 0; -#if CONFIG_HIGHMEM +#ifdef CONFIG_HIGHMEM #error HIGHGMEM not implemented in init.c #endif |