diff options
Diffstat (limited to 'arch/ia64')
32 files changed, 578 insertions, 272 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0df5f6f75edf..16be41446b5b 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -135,6 +135,7 @@ config IA64_GENERIC HP-zx1/sx1000 For HP systems HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. SGI-SN2 For SGI Altix systems + SGI-UV For SGI UV systems Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> If you don't know what to do, choose "generic". @@ -170,6 +171,18 @@ config IA64_SGI_SN2 to select this option. If in doubt, select ia64 generic support instead. +config IA64_SGI_UV` + bool "SGI-UV`" + select NUMA + select ACPI_NUMA + select SWIOTLB + help + Selecting this option will optimize the kernel for use on UV based + systems, but the resulting kernel binary will not run on other + types of ia64 systems. If you have an SGI UV system, it's safe + to select this option. If in doubt, select ia64 generic support + instead. + config IA64_HP_SIM bool "Ski-simulator" select SWIOTLB diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile index ec4cca477f49..e67ee3f27698 100644 --- a/arch/ia64/Makefile +++ b/arch/ia64/Makefile @@ -57,13 +57,14 @@ core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/ core-$(CONFIG_IA64_HP_ZX1) += arch/ia64/dig/ core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/ core-$(CONFIG_IA64_SGI_SN2) += arch/ia64/sn/ +core-$(CONFIG_IA64_SGI_UV) += arch/ia64/uv/ core-$(CONFIG_KVM) += arch/ia64/kvm/ drivers-$(CONFIG_PCI) += arch/ia64/pci/ drivers-$(CONFIG_IA64_HP_SIM) += arch/ia64/hp/sim/ drivers-$(CONFIG_IA64_HP_ZX1) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ -drivers-$(CONFIG_IA64_GENERIC) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/sn/ +drivers-$(CONFIG_IA64_GENERIC) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/sn/ arch/ia64/uv/ drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/ boot := arch/ia64/hp/sim/boot diff --git a/arch/ia64/ia32/ia32_signal.c b/arch/ia64/ia32/ia32_signal.c index 256a7faeda07..b763ca19ef17 100644 --- a/arch/ia64/ia32/ia32_signal.c +++ b/arch/ia64/ia32/ia32_signal.c @@ -463,7 +463,7 @@ sys32_sigsuspend (int history0, int history1, old_sigset_t mask) current->state = TASK_INTERRUPTIBLE; schedule(); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); return -ERESTARTNOHAND; } diff --git a/arch/ia64/ia32/ia32_support.c b/arch/ia64/ia32/ia32_support.c index 896b1ebbfb26..a6965ddafc46 100644 --- a/arch/ia64/ia32/ia32_support.c +++ b/arch/ia64/ia32/ia32_support.c @@ -15,7 +15,6 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/mm.h> -#include <linux/personality.h> #include <linux/sched.h> #include <asm/intrinsics.h> @@ -29,7 +28,6 @@ extern int die_if_kernel (char *str, struct pt_regs *regs, long err); -struct exec_domain ia32_exec_domain; struct page *ia32_shared_page[NR_CPUS]; unsigned long *ia32_boot_gdt; unsigned long *cpu_gdt_table[NR_CPUS]; @@ -240,14 +238,6 @@ ia32_cpu_init (void) static int __init ia32_init (void) { - ia32_exec_domain.name = "Linux/x86"; - ia32_exec_domain.handler = NULL; - ia32_exec_domain.pers_low = PER_LINUX32; - ia32_exec_domain.pers_high = PER_LINUX32; - ia32_exec_domain.signal_map = default_exec_domain.signal_map; - ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap; - register_exec_domain(&ia32_exec_domain); - #if PAGE_SHIFT > IA32_PAGE_SHIFT { extern struct kmem_cache *ia64_partial_page_cachep; diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index c7467f863c7a..43687cc60dfb 100644 --- a/arch/ia64/kernel/acpi.c +++ b/arch/ia64/kernel/acpi.c @@ -117,7 +117,10 @@ acpi_get_sysname(void) if (!strcmp(hdr->oem_id, "HP")) { return "hpzx1"; } else if (!strcmp(hdr->oem_id, "SGI")) { - return "sn2"; + if (!strcmp(hdr->oem_table_id + 4, "UV")) + return "uv"; + else + return "sn2"; } return "dig"; @@ -130,6 +133,8 @@ acpi_get_sysname(void) return "hpzx1_swiotlb"; # elif defined (CONFIG_IA64_SGI_SN2) return "sn2"; +# elif defined (CONFIG_IA64_SGI_UV) + return "uv"; # elif defined (CONFIG_IA64_DIG) return "dig"; # else @@ -460,7 +465,6 @@ void __init acpi_numa_slit_init(struct acpi_table_slit *slit) printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", len, slit->header.length); - memset(numa_slit, 10, sizeof(numa_slit)); return; } slit_table = slit; @@ -569,8 +573,14 @@ void __init acpi_numa_arch_fixup(void) printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks); - if (!slit_table) + if (!slit_table) { + for (i = 0; i < MAX_NUMNODES; i++) + for (j = 0; j < MAX_NUMNODES; j++) + node_distance(i, j) = i == j ? LOCAL_DISTANCE : + REMOTE_DISTANCE; return; + } + memset(numa_slit, -1, sizeof(numa_slit)); for (i = 0; i < slit_table->locality_count; i++) { if (!pxm_bit_test(i)) @@ -622,6 +632,9 @@ void acpi_unregister_gsi(u32 gsi) if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) return; + if (has_8259 && gsi < 16) + return; + iosapic_unregister_intr(gsi); } @@ -966,7 +979,7 @@ acpi_map_iosapics (void) fs_initcall(acpi_map_iosapics); #endif /* CONFIG_ACPI_NUMA */ -int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) +int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) { int err; diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S index e49ad8c5dc69..ca2bb95726de 100644 --- a/arch/ia64/kernel/entry.S +++ b/arch/ia64/kernel/entry.S @@ -1156,6 +1156,9 @@ skip_rbs_switch: * r31 = current->thread_info->flags * On exit: * p6 = TRUE if work-pending-check needs to be redone + * + * Interrupts are disabled on entry, reenabled depend on work, and + * disabled on exit. */ .work_pending_syscall: add r2=-8,r2 @@ -1164,16 +1167,16 @@ skip_rbs_switch: st8 [r2]=r8 st8 [r3]=r10 .work_pending: - tbit.z p6,p0=r31,TIF_NEED_RESCHED // current_thread_info()->need_resched==0? + tbit.z p6,p0=r31,TIF_NEED_RESCHED // is resched not needed? (p6) br.cond.sptk.few .notify #ifdef CONFIG_PREEMPT (pKStk) dep r21=-1,r0,PREEMPT_ACTIVE_BIT,1 ;; (pKStk) st4 [r20]=r21 - ssm psr.i // enable interrupts #endif + ssm psr.i // enable interrupts br.call.spnt.many rp=schedule -.ret9: cmp.eq p6,p0=r0,r0 // p6 <- 1 +.ret9: cmp.eq p6,p0=r0,r0 // p6 <- 1 (re-check) rsm psr.i // disable interrupts ;; #ifdef CONFIG_PREEMPT @@ -1182,13 +1185,13 @@ skip_rbs_switch: (pKStk) st4 [r20]=r0 // preempt_count() <- 0 #endif (pLvSys)br.cond.sptk.few .work_pending_syscall_end - br.cond.sptk.many .work_processed_kernel // re-check + br.cond.sptk.many .work_processed_kernel .notify: (pUStk) br.call.spnt.many rp=notify_resume_user -.ret10: cmp.ne p6,p0=r0,r0 // p6 <- 0 +.ret10: cmp.ne p6,p0=r0,r0 // p6 <- 0 (don't re-check) (pLvSys)br.cond.sptk.few .work_pending_syscall_end - br.cond.sptk.many .work_processed_kernel // don't re-check + br.cond.sptk.many .work_processed_kernel .work_pending_syscall_end: adds r2=PT(R8)+16,r12 @@ -1196,7 +1199,7 @@ skip_rbs_switch: ;; ld8 r8=[r2] ld8 r10=[r3] - br.cond.sptk.many .work_processed_syscall // re-check + br.cond.sptk.many .work_processed_syscall END(ia64_leave_kernel) @@ -1234,9 +1237,12 @@ GLOBAL_ENTRY(ia64_invoke_schedule_tail) END(ia64_invoke_schedule_tail) /* - * Setup stack and call do_notify_resume_user(). Note that pSys and pNonSys need to - * be set up by the caller. We declare 8 input registers so the system call - * args get preserved, in case we need to restart a system call. + * Setup stack and call do_notify_resume_user(), keeping interrupts + * disabled. + * + * Note that pSys and pNonSys need to be set up by the caller. + * We declare 8 input registers so the system call args get preserved, + * in case we need to restart a system call. */ ENTRY(notify_resume_user) .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8) diff --git a/arch/ia64/kernel/init_task.c b/arch/ia64/kernel/init_task.c index bc8efcad28b8..9d7e1c66faf4 100644 --- a/arch/ia64/kernel/init_task.c +++ b/arch/ia64/kernel/init_task.c @@ -18,7 +18,6 @@ #include <asm/pgtable.h> static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c index 082c31dcfd99..39752cdef6ff 100644 --- a/arch/ia64/kernel/iosapic.c +++ b/arch/ia64/kernel/iosapic.c @@ -558,8 +558,6 @@ static struct iosapic_rte_info * __init_refok iosapic_alloc_rte (void) if (!iosapic_kmalloc_ok && list_empty(&free_rte_list)) { rte = alloc_bootmem(sizeof(struct iosapic_rte_info) * NR_PREALLOCATE_RTE_ENTRIES); - if (!rte) - return NULL; for (i = 0; i < NR_PREALLOCATE_RTE_ENTRIES; i++, rte++) list_add(&rte->rte_list, &free_rte_list); } diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c index 6dee579f205f..7fd18f54c056 100644 --- a/arch/ia64/kernel/irq.c +++ b/arch/ia64/kernel/irq.c @@ -183,10 +183,10 @@ void fixup_irqs(void) { unsigned int irq; extern void ia64_process_pending_intr(void); - extern void ia64_disable_timer(void); extern volatile int time_keeper_id; - ia64_disable_timer(); + /* Mask ITV to disable timer */ + ia64_set_itv(1 << 16); /* * Find a new timesync master diff --git a/arch/ia64/kernel/ivt.S b/arch/ia64/kernel/ivt.S index 6678c49daba3..80b44ea052d7 100644 --- a/arch/ia64/kernel/ivt.S +++ b/arch/ia64/kernel/ivt.S @@ -1076,48 +1076,6 @@ END(ia64_syscall_setup) DBG_FAULT(15) FAULT(15) - /* - * Squatting in this space ... - * - * This special case dispatcher for illegal operation faults allows preserved - * registers to be modified through a callback function (asm only) that is handed - * back from the fault handler in r8. Up to three arguments can be passed to the - * callback function by returning an aggregate with the callback as its first - * element, followed by the arguments. - */ -ENTRY(dispatch_illegal_op_fault) - .prologue - .body - SAVE_MIN_WITH_COVER - ssm psr.ic | PSR_DEFAULT_BITS - ;; - srlz.i // guarantee that interruption collection is on - ;; -(p15) ssm psr.i // restore psr.i - adds r3=8,r2 // set up second base pointer for SAVE_REST - ;; - alloc r14=ar.pfs,0,0,1,0 // must be first in insn group - mov out0=ar.ec - ;; - SAVE_REST - PT_REGS_UNWIND_INFO(0) - ;; - br.call.sptk.many rp=ia64_illegal_op_fault -.ret0: ;; - alloc r14=ar.pfs,0,0,3,0 // must be first in insn group - mov out0=r9 - mov out1=r10 - mov out2=r11 - movl r15=ia64_leave_kernel - ;; - mov rp=r15 - mov b6=r8 - ;; - cmp.ne p6,p0=0,r8 -(p6) br.call.dpnt.many b6=b6 // call returns to ia64_leave_kernel - br.sptk.many ia64_leave_kernel -END(dispatch_illegal_op_fault) - .org ia64_ivt+0x4000 ///////////////////////////////////////////////////////////////////////////////////////// // 0x4000 Entry 16 (size 64 bundles) Reserved @@ -1715,6 +1673,48 @@ END(ia32_interrupt) DBG_FAULT(67) FAULT(67) + /* + * Squatting in this space ... + * + * This special case dispatcher for illegal operation faults allows preserved + * registers to be modified through a callback function (asm only) that is handed + * back from the fault handler in r8. Up to three arguments can be passed to the + * callback function by returning an aggregate with the callback as its first + * element, followed by the arguments. + */ +ENTRY(dispatch_illegal_op_fault) + .prologue + .body + SAVE_MIN_WITH_COVER + ssm psr.ic | PSR_DEFAULT_BITS + ;; + srlz.i // guarantee that interruption collection is on + ;; +(p15) ssm psr.i // restore psr.i + adds r3=8,r2 // set up second base pointer for SAVE_REST + ;; + alloc r14=ar.pfs,0,0,1,0 // must be first in insn group + mov out0=ar.ec + ;; + SAVE_REST + PT_REGS_UNWIND_INFO(0) + ;; + br.call.sptk.many rp=ia64_illegal_op_fault +.ret0: ;; + alloc r14=ar.pfs,0,0,3,0 // must be first in insn group + mov out0=r9 + mov out1=r10 + mov out2=r11 + movl r15=ia64_leave_kernel + ;; + mov rp=r15 + mov b6=r8 + ;; + cmp.ne p6,p0=0,r8 +(p6) br.call.dpnt.many b6=b6 // call returns to ia64_leave_kernel + br.sptk.many ia64_leave_kernel +END(dispatch_illegal_op_fault) + #ifdef CONFIG_IA32_SUPPORT /* diff --git a/arch/ia64/kernel/minstate.h b/arch/ia64/kernel/minstate.h index 7c548ac52bbc..74b6d670aaef 100644 --- a/arch/ia64/kernel/minstate.h +++ b/arch/ia64/kernel/minstate.h @@ -15,6 +15,9 @@ #define ACCOUNT_SYS_ENTER #endif +.section ".data.patch.rse", "a" +.previous + /* * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves * the minimum state necessary that allows us to turn psr.ic back @@ -40,7 +43,7 @@ * Note that psr.ic is NOT turned on by this macro. This is so that * we can pass interruption state as arguments to a handler. */ -#define DO_SAVE_MIN(COVER,SAVE_IFS,EXTRA) \ +#define DO_SAVE_MIN(COVER,SAVE_IFS,EXTRA,WORKAROUND) \ mov r16=IA64_KR(CURRENT); /* M */ \ mov r27=ar.rsc; /* M */ \ mov r20=r1; /* A */ \ @@ -87,6 +90,7 @@ tbit.nz p15,p0=r29,IA64_PSR_I_BIT; \ mov r29=b0 \ ;; \ + WORKAROUND; \ adds r16=PT(R8),r1; /* initialize first base pointer */ \ adds r17=PT(R9),r1; /* initialize second base pointer */ \ (pKStk) mov r18=r0; /* make sure r18 isn't NaT */ \ @@ -206,6 +210,40 @@ st8 [r25]=r10; /* ar.ssd */ \ ;; -#define SAVE_MIN_WITH_COVER DO_SAVE_MIN(cover, mov r30=cr.ifs,) -#define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(cover, mov r30=cr.ifs, mov r15=r19) -#define SAVE_MIN DO_SAVE_MIN( , mov r30=r0, ) +#define RSE_WORKAROUND \ +(pUStk) extr.u r17=r18,3,6; \ +(pUStk) sub r16=r18,r22; \ +[1:](pKStk) br.cond.sptk.many 1f; \ + .xdata4 ".data.patch.rse",1b-. \ + ;; \ + cmp.ge p6,p7 = 33,r17; \ + ;; \ +(p6) mov r17=0x310; \ +(p7) mov r17=0x308; \ + ;; \ + cmp.leu p1,p0=r16,r17; \ +(p1) br.cond.sptk.many 1f; \ + dep.z r17=r26,0,62; \ + movl r16=2f; \ + ;; \ + mov ar.pfs=r17; \ + dep r27=r0,r27,16,14; \ + mov b0=r16; \ + ;; \ + br.ret.sptk b0; \ + ;; \ +2: \ + mov ar.rsc=r0 \ + ;; \ + flushrs; \ + ;; \ + mov ar.bspstore=r22 \ + ;; \ + mov r18=ar.bsp; \ + ;; \ +1: \ + .pred.rel "mutex", pKStk, pUStk + +#define SAVE_MIN_WITH_COVER DO_SAVE_MIN(cover, mov r30=cr.ifs, , RSE_WORKAROUND) +#define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(cover, mov r30=cr.ifs, mov r15=r19, RSE_WORKAROUND) +#define SAVE_MIN DO_SAVE_MIN( , mov r30=r0, , ) diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c index 396004e8cd14..9dc00f7fe10e 100644 --- a/arch/ia64/kernel/palinfo.c +++ b/arch/ia64/kernel/palinfo.c @@ -900,12 +900,6 @@ static void palinfo_smp_call(void *info) { palinfo_smp_data_t *data = (palinfo_smp_data_t *)info; - if (data == NULL) { - printk(KERN_ERR "palinfo: data pointer is NULL\n"); - data->ret = 0; /* no output */ - return; - } - /* does this actual call */ data->ret = (*data->func)(data->page); } @@ -1053,7 +1047,7 @@ static int __cpuinit palinfo_cpu_callback(struct notifier_block *nfb, return NOTIFY_OK; } -static struct notifier_block palinfo_cpu_notifier __cpuinitdata = +static struct notifier_block __refdata palinfo_cpu_notifier = { .notifier_call = palinfo_cpu_callback, .priority = 0, diff --git a/arch/ia64/kernel/patch.c b/arch/ia64/kernel/patch.c index e0dca8743dbb..b83b2c516008 100644 --- a/arch/ia64/kernel/patch.c +++ b/arch/ia64/kernel/patch.c @@ -115,6 +115,29 @@ ia64_patch_vtop (unsigned long start, unsigned long end) ia64_srlz_i(); } +/* + * Disable the RSE workaround by turning the conditional branch + * that we tagged in each place the workaround was used into an + * unconditional branch. + */ +void __init +ia64_patch_rse (unsigned long start, unsigned long end) +{ + s32 *offp = (s32 *) start; + u64 ip, *b; + + while (offp < (s32 *) end) { + ip = (u64) offp + *offp; + + b = (u64 *)(ip & -16); + b[1] &= ~0xf800000L; + ia64_fc((void *) ip); + ++offp; + } + ia64_sync_i(); + ia64_srlz_i(); +} + void __init ia64_patch_mckinley_e9 (unsigned long start, unsigned long end) { diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 7fbb51e10bbe..7714a97b0104 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -867,7 +867,7 @@ pfm_rvfree(void *mem, unsigned long size) } static pfm_context_t * -pfm_context_alloc(void) +pfm_context_alloc(int ctx_flags) { pfm_context_t *ctx; @@ -878,6 +878,46 @@ pfm_context_alloc(void) ctx = kzalloc(sizeof(pfm_context_t), GFP_KERNEL); if (ctx) { DPRINT(("alloc ctx @%p\n", ctx)); + + /* + * init context protection lock + */ + spin_lock_init(&ctx->ctx_lock); + + /* + * context is unloaded + */ + ctx->ctx_state = PFM_CTX_UNLOADED; + + /* + * initialization of context's flags + */ + ctx->ctx_fl_block = (ctx_flags & PFM_FL_NOTIFY_BLOCK) ? 1 : 0; + ctx->ctx_fl_system = (ctx_flags & PFM_FL_SYSTEM_WIDE) ? 1: 0; + ctx->ctx_fl_no_msg = (ctx_flags & PFM_FL_OVFL_NO_MSG) ? 1: 0; + /* + * will move to set properties + * ctx->ctx_fl_excl_idle = (ctx_flags & PFM_FL_EXCL_IDLE) ? 1: 0; + */ + + /* + * init restart semaphore to locked + */ + init_completion(&ctx->ctx_restart_done); + + /* + * activation is used in SMP only + */ + ctx->ctx_last_activation = PFM_INVALID_ACTIVATION; + SET_LAST_CPU(ctx, -1); + + /* + * initialize notification message queue + */ + ctx->ctx_msgq_head = ctx->ctx_msgq_tail = 0; + init_waitqueue_head(&ctx->ctx_msgq_wait); + init_waitqueue_head(&ctx->ctx_zombieq); + } return ctx; } @@ -1824,11 +1864,6 @@ pfm_flush(struct file *filp, fl_owner_t id) * invoked after, it will find an empty queue and no * signal will be sent. In both case, we are safe */ - if (filp->f_flags & FASYNC) { - DPRINT(("cleaning up async_queue=%p\n", ctx->ctx_async_queue)); - pfm_do_fasync (-1, filp, ctx, 0); - } - PROTECT_CTX(ctx, flags); state = ctx->ctx_state; @@ -1959,6 +1994,11 @@ pfm_close(struct inode *inode, struct file *filp) return -EBADF; } + if (filp->f_flags & FASYNC) { + DPRINT(("cleaning up async_queue=%p\n", ctx->ctx_async_queue)); + pfm_do_fasync(-1, filp, ctx, 0); + } + PROTECT_CTX(ctx, flags); state = ctx->ctx_state; @@ -2165,28 +2205,21 @@ static struct dentry_operations pfmfs_dentry_operations = { }; -static int -pfm_alloc_fd(struct file **cfile) +static struct file * +pfm_alloc_file(pfm_context_t *ctx) { - int fd, ret = 0; - struct file *file = NULL; - struct inode * inode; + struct file *file; + struct inode *inode; + struct dentry *dentry; char name[32]; struct qstr this; - fd = get_unused_fd(); - if (fd < 0) return -ENFILE; - - ret = -ENFILE; - - file = get_empty_filp(); - if (!file) goto out; - /* * allocate a new inode */ inode = new_inode(pfmfs_mnt->mnt_sb); - if (!inode) goto out; + if (!inode) + return ERR_PTR(-ENOMEM); DPRINT(("new inode ino=%ld @%p\n", inode->i_ino, inode)); @@ -2199,59 +2232,28 @@ pfm_alloc_fd(struct file **cfile) this.len = strlen(name); this.hash = inode->i_ino; - ret = -ENOMEM; - /* * allocate a new dcache entry */ - file->f_path.dentry = d_alloc(pfmfs_mnt->mnt_sb->s_root, &this); - if (!file->f_path.dentry) goto out; + dentry = d_alloc(pfmfs_mnt->mnt_sb->s_root, &this); + if (!dentry) { + iput(inode); + return ERR_PTR(-ENOMEM); + } - file->f_path.dentry->d_op = &pfmfs_dentry_operations; + dentry->d_op = &pfmfs_dentry_operations; + d_add(dentry, inode); - d_add(file->f_path.dentry, inode); - file->f_path.mnt = mntget(pfmfs_mnt); - file->f_mapping = inode->i_mapping; + file = alloc_file(pfmfs_mnt, dentry, FMODE_READ, &pfm_file_ops); + if (!file) { + dput(dentry); + return ERR_PTR(-ENFILE); + } - file->f_op = &pfm_file_ops; - file->f_mode = FMODE_READ; file->f_flags = O_RDONLY; - file->f_pos = 0; - - /* - * may have to delay until context is attached? - */ - fd_install(fd, file); - - /* - * the file structure we will use - */ - *cfile = file; + file->private_data = ctx; - return fd; -out: - if (file) put_filp(file); - put_unused_fd(fd); - return ret; -} - -static void -pfm_free_fd(int fd, struct file *file) -{ - struct files_struct *files = current->files; - struct fdtable *fdt; - - /* - * there ie no fd_uninstall(), so we do it here - */ - spin_lock(&files->file_lock); - fdt = files_fdtable(files); - rcu_assign_pointer(fdt->fd[fd], NULL); - spin_unlock(&files->file_lock); - - if (file) - put_filp(file); - put_unused_fd(fd); + return file; } static int @@ -2475,6 +2477,7 @@ pfm_setup_buffer_fmt(struct task_struct *task, struct file *filp, pfm_context_t /* link buffer format and context */ ctx->ctx_buf_fmt = fmt; + ctx->ctx_fl_is_sampling = 1; /* assume record() is defined */ /* * check if buffer format wants to use perfmon buffer allocation/mapping service @@ -2669,78 +2672,45 @@ pfm_context_create(pfm_context_t *ctx, void *arg, int count, struct pt_regs *reg { pfarg_context_t *req = (pfarg_context_t *)arg; struct file *filp; + struct path path; int ctx_flags; + int fd; int ret; /* let's check the arguments first */ ret = pfarg_is_sane(current, req); - if (ret < 0) return ret; + if (ret < 0) + return ret; ctx_flags = req->ctx_flags; ret = -ENOMEM; - ctx = pfm_context_alloc(); - if (!ctx) goto error; + fd = get_unused_fd(); + if (fd < 0) + return fd; - ret = pfm_alloc_fd(&filp); - if (ret < 0) goto error_file; + ctx = pfm_context_alloc(ctx_flags); + if (!ctx) + goto error; - req->ctx_fd = ctx->ctx_fd = ret; + filp = pfm_alloc_file(ctx); + if (IS_ERR(filp)) { + ret = PTR_ERR(filp); + goto error_file; + } - /* - * attach context to file - */ - filp->private_data = ctx; + req->ctx_fd = ctx->ctx_fd = fd; /* * does the user want to sample? */ if (pfm_uuid_cmp(req->ctx_smpl_buf_id, pfm_null_uuid)) { ret = pfm_setup_buffer_fmt(current, filp, ctx, ctx_flags, 0, req); - if (ret) goto buffer_error; + if (ret) + goto buffer_error; } - /* - * init context protection lock - */ - spin_lock_init(&ctx->ctx_lock); - - /* - * context is unloaded - */ - ctx->ctx_state = PFM_CTX_UNLOADED; - - /* - * initialization of context's flags - */ - ctx->ctx_fl_block = (ctx_flags & PFM_FL_NOTIFY_BLOCK) ? 1 : 0; - ctx->ctx_fl_system = (ctx_flags & PFM_FL_SYSTEM_WIDE) ? 1: 0; - ctx->ctx_fl_is_sampling = ctx->ctx_buf_fmt ? 1 : 0; /* assume record() is defined */ - ctx->ctx_fl_no_msg = (ctx_flags & PFM_FL_OVFL_NO_MSG) ? 1: 0; - /* - * will move to set properties - * ctx->ctx_fl_excl_idle = (ctx_flags & PFM_FL_EXCL_IDLE) ? 1: 0; - */ - - /* - * init restart semaphore to locked - */ - init_completion(&ctx->ctx_restart_done); - - /* - * activation is used in SMP only - */ - ctx->ctx_last_activation = PFM_INVALID_ACTIVATION; - SET_LAST_CPU(ctx, -1); - - /* - * initialize notification message queue - */ - ctx->ctx_msgq_head = ctx->ctx_msgq_tail = 0; - init_waitqueue_head(&ctx->ctx_msgq_wait); - init_waitqueue_head(&ctx->ctx_zombieq); - DPRINT(("ctx=%p flags=0x%x system=%d notify_block=%d excl_idle=%d no_msg=%d ctx_fd=%d \n", ctx, ctx_flags, @@ -2755,10 +2725,14 @@ pfm_context_create(pfm_context_t *ctx, void *arg, int count, struct pt_regs *reg */ pfm_reset_pmu_state(ctx); + fd_install(fd, filp); + return 0; buffer_error: - pfm_free_fd(ctx->ctx_fd, filp); + path = filp->f_path; + put_filp(filp); + path_put(&path); if (ctx->ctx_buf_fmt) { pfm_buf_fmt_exit(ctx->ctx_buf_fmt, current, NULL, regs); @@ -2767,6 +2741,7 @@ error_file: pfm_context_free(ctx); error: + put_unused_fd(fd); return ret; } @@ -5038,12 +5013,13 @@ pfm_context_force_terminate(pfm_context_t *ctx, struct pt_regs *regs) } static int pfm_ovfl_notify_user(pfm_context_t *ctx, unsigned long ovfl_pmds); + /* * pfm_handle_work() can be called with interrupts enabled * (TIF_NEED_RESCHED) or disabled. The down_interruptible * call may sleep, therefore we must re-enable interrupts * to avoid deadlocks. It is safe to do so because this function - * is called ONLY when returning to user level (PUStk=1), in which case + * is called ONLY when returning to user level (pUStk=1), in which case * there is no risk of kernel stack overflow due to deep * interrupt nesting. */ @@ -5059,7 +5035,8 @@ pfm_handle_work(void) ctx = PFM_GET_CTX(current); if (ctx == NULL) { - printk(KERN_ERR "perfmon: [%d] has no PFM context\n", task_pid_nr(current)); + printk(KERN_ERR "perfmon: [%d] has no PFM context\n", + task_pid_nr(current)); return; } @@ -5083,11 +5060,12 @@ pfm_handle_work(void) /* * must be done before we check for simple-reset mode */ - if (ctx->ctx_fl_going_zombie || ctx->ctx_state == PFM_CTX_ZOMBIE) goto do_zombie; - + if (ctx->ctx_fl_going_zombie || ctx->ctx_state == PFM_CTX_ZOMBIE) + goto do_zombie; //if (CTX_OVFL_NOBLOCK(ctx)) goto skip_blocking; - if (reason == PFM_TRAP_REASON_RESET) goto skip_blocking; + if (reason == PFM_TRAP_REASON_RESET) + goto skip_blocking; /* * restore interrupt mask to what it was on entry. @@ -5135,7 +5113,8 @@ do_zombie: /* * in case of interruption of down() we don't restart anything */ - if (ret < 0) goto nothing_to_do; + if (ret < 0) + goto nothing_to_do; skip_blocking: pfm_resume_after_ovfl(ctx, ovfl_regs, regs); diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index 58dcfac5ea88..a3a34b4eb038 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -167,11 +167,18 @@ void tsk_clear_notify_resume(struct task_struct *tsk) clear_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME); } +/* + * do_notify_resume_user(): + * Called from notify_resume_user at entry.S, with interrupts disabled. + */ void -do_notify_resume_user (sigset_t *unused, struct sigscratch *scr, long in_syscall) +do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall) { if (fsys_mode(current, &scr->pt)) { - /* defer signal-handling etc. until we return to privilege-level 0. */ + /* + * defer signal-handling etc. until we return to + * privilege-level 0. + */ if (!ia64_psr(&scr->pt)->lp) ia64_psr(&scr->pt)->lp = 1; return; @@ -179,16 +186,26 @@ do_notify_resume_user (sigset_t *unused, struct sigscratch *scr, long in_syscall #ifdef CONFIG_PERFMON if (current->thread.pfm_needs_checking) + /* + * Note: pfm_handle_work() allow us to call it with interrupts + * disabled, and may enable interrupts within the function. + */ pfm_handle_work(); #endif /* deal with pending signal delivery */ - if (test_thread_flag(TIF_SIGPENDING)) + if (test_thread_flag(TIF_SIGPENDING)) { + local_irq_enable(); /* force interrupt enable */ ia64_do_signal(scr, in_syscall); + } /* copy user rbs to kernel rbs */ - if (unlikely(test_thread_flag(TIF_RESTORE_RSE))) + if (unlikely(test_thread_flag(TIF_RESTORE_RSE))) { + local_irq_enable(); /* force interrupt enable */ ia64_sync_krbs(); + } + + local_irq_disable(); /* force interrupt disable */ } static int pal_halt = 1; diff --git a/arch/ia64/kernel/sal.c b/arch/ia64/kernel/sal.c index a3022dc48ef8..0464173ea568 100644 --- a/arch/ia64/kernel/sal.c +++ b/arch/ia64/kernel/sal.c @@ -229,6 +229,14 @@ static void __init sal_desc_ap_wakeup(void *p) { } */ static int sal_cache_flush_drops_interrupts; +static int __init +force_pal_cache_flush(char *str) +{ + sal_cache_flush_drops_interrupts = 1; + return 0; +} +early_param("force_pal_cache_flush", force_pal_cache_flush); + void __init check_sal_cache_flush (void) { @@ -237,15 +245,17 @@ check_sal_cache_flush (void) u64 vector, cache_type = 3; struct ia64_sal_retval isrv; + if (sal_cache_flush_drops_interrupts) + return; + cpu = get_cpu(); local_irq_save(flags); /* - * Schedule a timer interrupt, wait until it's reported, and see if - * SAL_CACHE_FLUSH drops it. + * Send ourselves a timer interrupt, wait until it's reported, and see + * if SAL_CACHE_FLUSH drops it. */ - ia64_set_itv(IA64_TIMER_VECTOR); - ia64_set_itm(ia64_get_itc() + 1000); + platform_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0); while (!ia64_get_irr(IA64_TIMER_VECTOR)) cpu_relax(); diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index 5015ca1275ca..632cda8f2e76 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -239,6 +239,25 @@ __initcall(register_memory); #ifdef CONFIG_KEXEC + +/* + * This function checks if the reserved crashkernel is allowed on the specific + * IA64 machine flavour. Machines without an IO TLB use swiotlb and require + * some memory below 4 GB (i.e. in 32 bit area), see the implementation of + * lib/swiotlb.c. The hpzx1 architecture has an IO TLB but cannot use that + * in kdump case. See the comment in sba_init() in sba_iommu.c. + * + * So, the only machvec that really supports loading the kdump kernel + * over 4 GB is "sn2". + */ +static int __init check_crashkernel_memory(unsigned long pbase, size_t size) +{ + if (ia64_platform_is("sn2") || ia64_platform_is("uv")) + return 1; + else + return pbase < (1UL << 32); +} + static void __init setup_crashkernel(unsigned long total, int *n) { unsigned long long base = 0, size = 0; @@ -252,6 +271,16 @@ static void __init setup_crashkernel(unsigned long total, int *n) base = kdump_find_rsvd_region(size, rsvd_region, *n); } + + if (!check_crashkernel_memory(base, size)) { + pr_warning("crashkernel: There would be kdump memory " + "at %ld GB but this is unusable because it " + "must\nbe below 4 GB. Change the memory " + "configuration of the machine.\n", + (unsigned long)(base >> 30)); + return; + } + if (base != ~0UL) { printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " "for crashkernel (System RAM: %ldMB)\n", @@ -518,7 +547,8 @@ setup_arch (char **cmdline_p) # ifdef CONFIG_ACPI_NUMA acpi_numa_init(); per_cpu_scan_finalize((cpus_weight(early_cpu_possible_map) == 0 ? - 32 : cpus_weight(early_cpu_possible_map)), additional_cpus); + 32 : cpus_weight(early_cpu_possible_map)), + additional_cpus > 0 ? additional_cpus : 0); # endif #else # ifdef CONFIG_SMP @@ -531,6 +561,17 @@ setup_arch (char **cmdline_p) /* process SAL system table: */ ia64_sal_init(__va(efi.sal_systab)); +#ifdef CONFIG_ITANIUM + ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); +#else + { + u64 num_phys_stacked; + + if (ia64_pal_rse_info(&num_phys_stacked, 0) == 0 && num_phys_stacked > 96) + ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); + } +#endif + #ifdef CONFIG_SMP cpu_physical_id(0) = hard_smp_processor_id(); #endif @@ -538,8 +579,6 @@ setup_arch (char **cmdline_p) cpu_init(); /* initialize the bootstrap CPU */ mmu_context_init(); /* initialize context_id bitmap */ - check_sal_cache_flush(); - #ifdef CONFIG_ACPI acpi_boot_init(); #endif @@ -567,6 +606,7 @@ setup_arch (char **cmdline_p) ia64_mca_init(); platform_setup(cmdline_p); + check_sal_cache_flush(); paging_init(); } diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index 5740296c35af..19c5a78636fc 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -464,7 +464,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) if (!user_mode(&scr->pt)) return; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) + if (current_thread_info()->status & TS_RESTORE_SIGMASK) oldset = ¤t->saved_sigmask; else oldset = ¤t->blocked; @@ -530,12 +530,13 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) * continue to iterate in this loop so we can deliver the SIGSEGV... */ if (handle_signal(signr, &ka, &info, oldset, scr)) { - /* a signal was successfully delivered; the saved + /* + * A signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply - * clear the TIF_RESTORE_SIGMASK flag */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - clear_thread_flag(TIF_RESTORE_SIGMASK); + * clear the TS_RESTORE_SIGMASK flag. + */ + current_thread_info()->status &= ~TS_RESTORE_SIGMASK; return; } } @@ -566,8 +567,8 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) /* if there's no signal to deliver, we just put the saved sigmask * back */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); + if (current_thread_info()->status & TS_RESTORE_SIGMASK) { + current_thread_info()->status &= ~TS_RESTORE_SIGMASK; sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); } } diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c index 9a9d4c489330..983296f1c813 100644 --- a/arch/ia64/kernel/smp.c +++ b/arch/ia64/kernel/smp.c @@ -98,8 +98,33 @@ unlock_ipi_calllock(void) spin_unlock_irq(&call_lock); } +static inline void +handle_call_data(void) +{ + struct call_data_struct *data; + void (*func)(void *info); + void *info; + int wait; + + /* release the 'pointer lock' */ + data = (struct call_data_struct *)call_data; + func = data->func; + info = data->info; + wait = data->wait; + + mb(); + atomic_inc(&data->started); + /* At this point the structure may be gone unless wait is true. */ + (*func)(info); + + /* Notify the sending CPU that the task is done. */ + mb(); + if (wait) + atomic_inc(&data->finished); +} + static void -stop_this_cpu (void) +stop_this_cpu(void) { /* * Remove this CPU: @@ -138,44 +163,21 @@ handle_IPI (int irq, void *dev_id) ops &= ~(1 << which); switch (which) { - case IPI_CALL_FUNC: - { - struct call_data_struct *data; - void (*func)(void *info); - void *info; - int wait; - - /* release the 'pointer lock' */ - data = (struct call_data_struct *) call_data; - func = data->func; - info = data->info; - wait = data->wait; - - mb(); - atomic_inc(&data->started); - /* - * At this point the structure may be gone unless - * wait is true. - */ - (*func)(info); - - /* Notify the sending CPU that the task is done. */ - mb(); - if (wait) - atomic_inc(&data->finished); - } - break; - - case IPI_CPU_STOP: + case IPI_CALL_FUNC: + handle_call_data(); + break; + + case IPI_CPU_STOP: stop_this_cpu(); break; #ifdef CONFIG_KEXEC - case IPI_KDUMP_CPU_STOP: + case IPI_KDUMP_CPU_STOP: unw_init_running(kdump_cpu_freeze, NULL); break; #endif - default: - printk(KERN_CRIT "Unknown IPI on CPU %d: %lu\n", this_cpu, which); + default: + printk(KERN_CRIT "Unknown IPI on CPU %d: %lu\n", + this_cpu, which); break; } } while (ops); diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c index 48e15a51782f..aad1b7b1fff9 100644 --- a/arch/ia64/kernel/time.c +++ b/arch/ia64/kernel/time.c @@ -117,6 +117,7 @@ void account_system_vtime(struct task_struct *tsk) local_irq_restore(flags); } +EXPORT_SYMBOL_GPL(account_system_vtime); /* * Called from the timer interrupt handler to charge accumulated user time @@ -379,11 +380,6 @@ static struct irqaction timer_irqaction = { .name = "timer" }; -void __devinit ia64_disable_timer(void) -{ - ia64_set_itv(1 << 16); -} - void __init time_init (void) { diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c index abb17a613b17..26228e2d01ae 100644 --- a/arch/ia64/kernel/topology.c +++ b/arch/ia64/kernel/topology.c @@ -36,9 +36,11 @@ void arch_fix_phys_package_id(int num, u32 slot) } EXPORT_SYMBOL_GPL(arch_fix_phys_package_id); -int arch_register_cpu(int num) + +#ifdef CONFIG_HOTPLUG_CPU +int __ref arch_register_cpu(int num) { -#if defined (CONFIG_ACPI) && defined (CONFIG_HOTPLUG_CPU) +#ifdef CONFIG_ACPI /* * If CPEI can be re-targetted or if this is not * CPEI target, then it is hotpluggable @@ -47,19 +49,21 @@ int arch_register_cpu(int num) sysfs_cpus[num].cpu.hotpluggable = 1; map_cpu_to_node(num, node_cpuid[num].nid); #endif - return register_cpu(&sysfs_cpus[num].cpu, num); } - -#ifdef CONFIG_HOTPLUG_CPU +EXPORT_SYMBOL(arch_register_cpu); void arch_unregister_cpu(int num) { unregister_cpu(&sysfs_cpus[num].cpu); unmap_cpu_from_node(num, cpu_to_node(num)); } -EXPORT_SYMBOL(arch_register_cpu); EXPORT_SYMBOL(arch_unregister_cpu); +#else +static int __init arch_register_cpu(int num) +{ + return register_cpu(&sysfs_cpus[num].cpu, num); +} #endif /*CONFIG_HOTPLUG_CPU*/ diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S index 80622acc95de..5929ab10a289 100644 --- a/arch/ia64/kernel/vmlinux.lds.S +++ b/arch/ia64/kernel/vmlinux.lds.S @@ -156,6 +156,13 @@ SECTIONS __end___vtop_patchlist = .; } + .data.patch.rse : AT(ADDR(.data.patch.rse) - LOAD_OFFSET) + { + __start___rse_patchlist = .; + *(.data.patch.rse) + __end___rse_patchlist = .; + } + .data.patch.mckinley_e9 : AT(ADDR(.data.patch.mckinley_e9) - LOAD_OFFSET) { __start___mckinley_e9_bundles = .; diff --git a/arch/ia64/kvm/Makefile b/arch/ia64/kvm/Makefile index 52353397a1a4..112791dd2542 100644 --- a/arch/ia64/kvm/Makefile +++ b/arch/ia64/kvm/Makefile @@ -7,7 +7,6 @@ offsets-file := asm-offsets.h always := $(offsets-file) targets := $(offsets-file) targets += arch/ia64/kvm/asm-offsets.s -clean-files := $(addprefix $(objtree)/,$(targets) $(obj)/memcpy.S $(obj)/memset.S) # Default sed regexp - multiline due to syntax constraints define sed-y @@ -54,5 +53,5 @@ EXTRA_CFLAGS_vcpu.o += -mfixed-range=f2-f5,f12-f127 kvm-intel-objs = vmm.o vmm_ivt.o trampoline.o vcpu.o optvfault.o mmio.o \ vtlb.o process.o #Add link memcpy and memset to avoid possible structure assignment error -kvm-intel-objs += ../lib/memset.o ../lib/memcpy.o +kvm-intel-objs += memcpy.o memset.o obj-$(CONFIG_KVM_INTEL) += kvm-intel.o diff --git a/arch/ia64/kvm/memcpy.S b/arch/ia64/kvm/memcpy.S new file mode 100644 index 000000000000..c04cdbe9f80f --- /dev/null +++ b/arch/ia64/kvm/memcpy.S @@ -0,0 +1 @@ +#include "../lib/memcpy.S" diff --git a/arch/ia64/kvm/memset.S b/arch/ia64/kvm/memset.S new file mode 100644 index 000000000000..83c3066d844a --- /dev/null +++ b/arch/ia64/kvm/memset.S @@ -0,0 +1 @@ +#include "../lib/memset.S" diff --git a/arch/ia64/kvm/mmio.c b/arch/ia64/kvm/mmio.c index 351bf70da463..7f1a858bc69f 100644 --- a/arch/ia64/kvm/mmio.c +++ b/arch/ia64/kvm/mmio.c @@ -159,7 +159,8 @@ static void mmio_access(struct kvm_vcpu *vcpu, u64 src_pa, u64 *dest, if (p->u.ioreq.state == STATE_IORESP_READY) { if (dir == IOREQ_READ) - *dest = p->u.ioreq.data; + /* it's necessary to ensure zero extending */ + *dest = p->u.ioreq.data & (~0UL >> (64-(s*8))); } else panic_vm(vcpu); out: diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index fc6c6636ffda..200100ea7610 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -719,3 +719,28 @@ out: EXPORT_SYMBOL_GPL(remove_memory); #endif /* CONFIG_MEMORY_HOTREMOVE */ #endif + +/* + * Even when CONFIG_IA32_SUPPORT is not enabled it is + * useful to have the Linux/x86 domain registered to + * avoid an attempted module load when emulators call + * personality(PER_LINUX32). This saves several milliseconds + * on each such call. + */ +static struct exec_domain ia32_exec_domain; + +static int __init +per_linux32_init(void) +{ + ia32_exec_domain.name = "Linux/x86"; + ia32_exec_domain.handler = NULL; + ia32_exec_domain.pers_low = PER_LINUX32; + ia32_exec_domain.pers_high = PER_LINUX32; + ia32_exec_domain.signal_map = default_exec_domain.signal_map; + ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap; + register_exec_domain(&ia32_exec_domain); + + return 0; +} + +__initcall(per_linux32_init); diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c index 49d3120415eb..e585f9a2afb9 100644 --- a/arch/ia64/sn/kernel/sn2/sn2_smp.c +++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c @@ -512,6 +512,8 @@ static ssize_t sn2_ptc_proc_write(struct file *file, const char __user *user, si int cpu; char optstr[64]; + if (count == 0 || count > sizeof(optstr)) + return -EINVAL; if (copy_from_user(optstr, user, count)) return -EFAULT; optstr[count - 1] = '\0'; diff --git a/arch/ia64/uv/Makefile b/arch/ia64/uv/Makefile new file mode 100644 index 000000000000..aa9f91947c49 --- /dev/null +++ b/arch/ia64/uv/Makefile @@ -0,0 +1,12 @@ +# arch/ia64/uv/Makefile +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# Copyright (C) 2008 Silicon Graphics, Inc. All Rights Reserved. +# +# Makefile for the sn uv subplatform +# + +obj-y += kernel/ diff --git a/arch/ia64/uv/kernel/Makefile b/arch/ia64/uv/kernel/Makefile new file mode 100644 index 000000000000..8d92b4684d8e --- /dev/null +++ b/arch/ia64/uv/kernel/Makefile @@ -0,0 +1,13 @@ +# arch/ia64/uv/kernel/Makefile +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# Copyright (C) 2008 Silicon Graphics, Inc. All Rights Reserved. +# + +EXTRA_CFLAGS += -Iarch/ia64/sn/include + +obj-y += setup.o +obj-$(CONFIG_IA64_GENERIC) += machvec.o diff --git a/arch/ia64/uv/kernel/machvec.c b/arch/ia64/uv/kernel/machvec.c new file mode 100644 index 000000000000..50737a9dca74 --- /dev/null +++ b/arch/ia64/uv/kernel/machvec.c @@ -0,0 +1,11 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. + */ + +#define MACHVEC_PLATFORM_NAME uv +#define MACHVEC_PLATFORM_HEADER <asm/machvec_uv.h> +#include <asm/machvec_init.h> diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c new file mode 100644 index 000000000000..cf5f28ae96c4 --- /dev/null +++ b/arch/ia64/uv/kernel/setup.c @@ -0,0 +1,110 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * SGI UV Core Functions + * + * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved. + */ + +#include <linux/module.h> +#include <linux/percpu.h> +#include <asm/sn/simulator.h> +#include <asm/uv/uv_mmrs.h> +#include <asm/uv/uv_hub.h> + +DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info); +EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info); + +#ifdef CONFIG_IA64_SGI_UV +int sn_prom_type; +#endif + +struct redir_addr { + unsigned long redirect; + unsigned long alias; +}; + +#define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT + +static __initdata struct redir_addr redir_addrs[] = { + {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG}, + {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG}, + {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG}, +}; + +static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size) +{ + union uvh_si_alias0_overlay_config_u alias; + union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect; + int i; + + for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) { + alias.v = uv_read_local_mmr(redir_addrs[i].alias); + if (alias.s.base == 0) { + *size = (1UL << alias.s.m_alias); + redirect.v = uv_read_local_mmr(redir_addrs[i].redirect); + *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT; + return; + } + } + BUG(); +} + +void __init uv_setup(char **cmdline_p) +{ + union uvh_si_addr_map_config_u m_n_config; + union uvh_node_id_u node_id; + unsigned long gnode_upper; + int nid, cpu, m_val, n_val; + unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size; + + if (IS_MEDUSA()) { + lowmem_redir_base = 0; + lowmem_redir_size = 0; + node_id.v = 0; + m_n_config.s.m_skt = 37; + m_n_config.s.n_skt = 0; + mmr_base = 0; +#if 0 + /* Need BIOS calls - TDB */ + if (!ia64_sn_is_fake_prom()) + sn_prom_type = 1; + else +#endif + sn_prom_type = 2; + printk(KERN_INFO "Running on medusa with %s PROM\n", + (sn_prom_type == 1) ? "real" : "fake"); + } else { + get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size); + node_id.v = uv_read_local_mmr(UVH_NODE_ID); + m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG); + mmr_base = + uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) & + ~UV_MMR_ENABLE; + } + + m_val = m_n_config.s.m_skt; + n_val = m_n_config.s.n_skt; + printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base); + + gnode_upper = (((unsigned long)node_id.s.node_id) & + ~((1 << n_val) - 1)) << m_val; + + for_each_present_cpu(cpu) { + nid = cpu_to_node(cpu); + uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base; + uv_cpu_hub_info(cpu)->lowmem_remap_top = + lowmem_redir_base + lowmem_redir_size; + uv_cpu_hub_info(cpu)->m_val = m_val; + uv_cpu_hub_info(cpu)->n_val = m_val; + uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1; + uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1; + uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper; + uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base; + uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */ + printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid); + } +} + |