diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-prima2/irq.c | 6 | ||||
-rw-r--r-- | arch/arm/mach-tegra/flowctrl.c | 4 | ||||
-rw-r--r-- | arch/arm/mm/fault.c | 4 | ||||
-rw-r--r-- | arch/arm/mm/mmu.c | 3 | ||||
-rw-r--r-- | arch/arm/vfp/vfpmodule.c | 24 | ||||
-rw-r--r-- | arch/frv/include/asm/processor.h | 4 | ||||
-rw-r--r-- | arch/mn10300/kernel/smp.c | 9 | ||||
-rw-r--r-- | arch/parisc/kernel/smp.c | 8 | ||||
-rw-r--r-- | arch/powerpc/include/asm/kvm_book3s.h | 7 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_host.c | 13 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_hv_rm_mmu.c | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_segment.S | 42 | ||||
-rw-r--r-- | arch/x86/include/asm/kvm_para.h | 3 | ||||
-rw-r--r-- | arch/x86/kernel/acpi/boot.c | 2 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 14 | ||||
-rw-r--r-- | arch/x86/kernel/microcode_intel.c | 14 |
16 files changed, 95 insertions, 63 deletions
diff --git a/arch/arm/mach-prima2/irq.c b/arch/arm/mach-prima2/irq.c index 37c2de9b6f26..a7b9415d30f8 100644 --- a/arch/arm/mach-prima2/irq.c +++ b/arch/arm/mach-prima2/irq.c @@ -42,7 +42,8 @@ sirfsoc_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num) static __init void sirfsoc_irq_init(void) { sirfsoc_alloc_gc(sirfsoc_intc_base, 0, 32); - sirfsoc_alloc_gc(sirfsoc_intc_base + 4, 32, SIRFSOC_INTENAL_IRQ_END - 32); + sirfsoc_alloc_gc(sirfsoc_intc_base + 4, 32, + SIRFSOC_INTENAL_IRQ_END + 1 - 32); writel_relaxed(0, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL0); writel_relaxed(0, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL1); @@ -68,7 +69,8 @@ void __init sirfsoc_of_irq_init(void) if (!sirfsoc_intc_base) panic("unable to map intc cpu registers\n"); - irq_domain_add_legacy(np, 32, 0, 0, &irq_domain_simple_ops, NULL); + irq_domain_add_legacy(np, SIRFSOC_INTENAL_IRQ_END + 1, 0, 0, + &irq_domain_simple_ops, NULL); of_node_put(np); diff --git a/arch/arm/mach-tegra/flowctrl.c b/arch/arm/mach-tegra/flowctrl.c index fef66a7486ed..f07488e0bd32 100644 --- a/arch/arm/mach-tegra/flowctrl.c +++ b/arch/arm/mach-tegra/flowctrl.c @@ -53,10 +53,10 @@ static void flowctrl_update(u8 offset, u32 value) void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value) { - return flowctrl_update(flowctrl_offset_halt_cpu[cpuid], value); + return flowctrl_update(flowctrl_offset_cpu_csr[cpuid], value); } void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value) { - return flowctrl_update(flowctrl_offset_cpu_csr[cpuid], value); + return flowctrl_update(flowctrl_offset_halt_cpu[cpuid], value); } diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index f07467533365..5bb48356d217 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -247,7 +247,9 @@ good_area: return handle_mm_fault(mm, vma, addr & PAGE_MASK, flags); check_stack: - if (vma->vm_flags & VM_GROWSDOWN && !expand_stack(vma, addr)) + /* Don't allow expansion below FIRST_USER_ADDRESS */ + if (vma->vm_flags & VM_GROWSDOWN && + addr >= FIRST_USER_ADDRESS && !expand_stack(vma, addr)) goto good_area; out: return fault; diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 2c7cf2f9c837..aa78de8bfdd3 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -489,7 +489,8 @@ static void __init build_mem_type_table(void) */ for (i = 0; i < ARRAY_SIZE(mem_types); i++) { mem_types[i].prot_pte |= PTE_EXT_AF; - mem_types[i].prot_sect |= PMD_SECT_AF; + if (mem_types[i].prot_sect) + mem_types[i].prot_sect |= PMD_SECT_AF; } kern_pgprot |= PTE_EXT_AF; vecs_pgprot |= PTE_EXT_AF; diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index bc683b8219b5..b0197b2c857d 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -11,6 +11,7 @@ #include <linux/types.h> #include <linux/cpu.h> #include <linux/cpu_pm.h> +#include <linux/hardirq.h> #include <linux/kernel.h> #include <linux/notifier.h> #include <linux/signal.h> @@ -432,7 +433,10 @@ void VFP_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs) static void vfp_enable(void *unused) { - u32 access = get_copro_access(); + u32 access; + + BUG_ON(preemptible()); + access = get_copro_access(); /* * Enable full access to VFP (cp10 and cp11) @@ -573,12 +577,6 @@ int vfp_preserve_user_clear_hwstate(struct user_vfp __user *ufp, * entry. */ hwstate->fpscr &= ~(FPSCR_LENGTH_MASK | FPSCR_STRIDE_MASK); - - /* - * Disable VFP in the hwstate so that we can detect if it gets - * used. - */ - hwstate->fpexc &= ~FPEXC_EN; return 0; } @@ -591,12 +589,8 @@ int vfp_restore_user_hwstate(struct user_vfp __user *ufp, unsigned long fpexc; int err = 0; - /* - * If VFP has been used, then disable it to avoid corrupting - * the new thread state. - */ - if (hwstate->fpexc & FPEXC_EN) - vfp_flush_hwstate(thread); + /* Disable VFP to avoid corrupting the new thread state. */ + vfp_flush_hwstate(thread); /* * Copy the floating point registers. There can be unused @@ -657,7 +651,7 @@ static int __init vfp_init(void) unsigned int cpu_arch = cpu_architecture(); if (cpu_arch >= CPU_ARCH_ARMv6) - vfp_enable(NULL); + on_each_cpu(vfp_enable, NULL, 1); /* * First check that there is a VFP that we can use. @@ -678,8 +672,6 @@ static int __init vfp_init(void) } else { hotcpu_notifier(vfp_hotplug, 0); - smp_call_function(vfp_enable, NULL, 1); - VFP_arch = (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT; /* Extract the architecture version */ printk("implementor %02x architecture %d part %02x variant %x rev %x\n", (vfpsid & FPSID_IMPLEMENTER_MASK) >> FPSID_IMPLEMENTER_BIT, diff --git a/arch/frv/include/asm/processor.h b/arch/frv/include/asm/processor.h index 81c2e271d620..9b1a92b73f60 100644 --- a/arch/frv/include/asm/processor.h +++ b/arch/frv/include/asm/processor.h @@ -135,10 +135,6 @@ unsigned long get_wchan(struct task_struct *p); #define KSTK_EIP(tsk) ((tsk)->thread.frame0->pc) #define KSTK_ESP(tsk) ((tsk)->thread.frame0->sp) -/* Allocation and freeing of basic task resources. */ -extern struct task_struct *alloc_task_struct_node(int node); -extern void free_task_struct(struct task_struct *p); - #define cpu_relax() barrier() /* data cache prefetch */ diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c index 910dddf65e44..9cd69ad6aa02 100644 --- a/arch/mn10300/kernel/smp.c +++ b/arch/mn10300/kernel/smp.c @@ -24,6 +24,7 @@ #include <linux/sched.h> #include <linux/profile.h> #include <linux/smp.h> +#include <linux/cpu.h> #include <asm/tlbflush.h> #include <asm/bitops.h> #include <asm/processor.h> @@ -38,7 +39,6 @@ #include "internal.h" #ifdef CONFIG_HOTPLUG_CPU -#include <linux/cpu.h> #include <asm/cacheflush.h> static unsigned long sleep_mode[NR_CPUS]; @@ -874,10 +874,13 @@ static void __init smp_online(void) cpu = smp_processor_id(); - local_irq_enable(); + notify_cpu_starting(cpu); + ipi_call_lock(); set_cpu_online(cpu, true); - smp_wmb(); + ipi_call_unlock(); + + local_irq_enable(); } /** diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c index 0bb1d63907f8..4dc7b7942b4c 100644 --- a/arch/parisc/kernel/smp.c +++ b/arch/parisc/kernel/smp.c @@ -31,6 +31,7 @@ #include <linux/delay.h> #include <linux/bitops.h> #include <linux/ftrace.h> +#include <linux/cpu.h> #include <linux/atomic.h> #include <asm/current.h> @@ -295,8 +296,13 @@ smp_cpu_init(int cpunum) printk(KERN_CRIT "CPU#%d already initialized!\n", cpunum); machine_halt(); - } + } + + notify_cpu_starting(cpunum); + + ipi_call_lock(); set_cpu_online(cpunum, true); + ipi_call_unlock(); /* Initialise the idle task for this CPU */ atomic_inc(&init_mm.mm_count); diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index aa795ccef294..fd07f43d6622 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -81,12 +81,13 @@ struct kvmppc_vcpu_book3s { u64 sdr1; u64 hior; u64 msr_mask; - u64 vsid_next; #ifdef CONFIG_PPC_BOOK3S_32 u32 vsid_pool[VSID_POOL_SIZE]; + u32 vsid_next; #else - u64 vsid_first; - u64 vsid_max; + u64 proto_vsid_first; + u64 proto_vsid_max; + u64 proto_vsid_next; #endif int context_id[SID_CONTEXTS]; diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c index 6f87f39a1ac2..10fc8ec9d2a8 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_host.c +++ b/arch/powerpc/kvm/book3s_64_mmu_host.c @@ -194,14 +194,14 @@ static struct kvmppc_sid_map *create_sid_map(struct kvm_vcpu *vcpu, u64 gvsid) backwards_map = !backwards_map; /* Uh-oh ... out of mappings. Let's flush! */ - if (vcpu_book3s->vsid_next == vcpu_book3s->vsid_max) { - vcpu_book3s->vsid_next = vcpu_book3s->vsid_first; + if (vcpu_book3s->proto_vsid_next == vcpu_book3s->proto_vsid_max) { + vcpu_book3s->proto_vsid_next = vcpu_book3s->proto_vsid_first; memset(vcpu_book3s->sid_map, 0, sizeof(struct kvmppc_sid_map) * SID_MAP_NUM); kvmppc_mmu_pte_flush(vcpu, 0, 0); kvmppc_mmu_flush_segments(vcpu); } - map->host_vsid = vcpu_book3s->vsid_next++; + map->host_vsid = vsid_scramble(vcpu_book3s->proto_vsid_next++, 256M); map->guest_vsid = gvsid; map->valid = true; @@ -319,9 +319,10 @@ int kvmppc_mmu_init(struct kvm_vcpu *vcpu) return -1; vcpu3s->context_id[0] = err; - vcpu3s->vsid_max = ((vcpu3s->context_id[0] + 1) << USER_ESID_BITS) - 1; - vcpu3s->vsid_first = vcpu3s->context_id[0] << USER_ESID_BITS; - vcpu3s->vsid_next = vcpu3s->vsid_first; + vcpu3s->proto_vsid_max = ((vcpu3s->context_id[0] + 1) + << USER_ESID_BITS) - 1; + vcpu3s->proto_vsid_first = vcpu3s->context_id[0] << USER_ESID_BITS; + vcpu3s->proto_vsid_next = vcpu3s->proto_vsid_first; kvmppc_mmu_hpte_init(vcpu); diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index def880aea63a..cec4daddbf31 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -463,6 +463,7 @@ long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu) /* insert R and C bits from PTE */ rcbits = rev->guest_rpte & (HPTE_R_R|HPTE_R_C); args[j] |= rcbits << (56 - 5); + hp[0] = 0; continue; } diff --git a/arch/powerpc/kvm/book3s_segment.S b/arch/powerpc/kvm/book3s_segment.S index 0676ae249b9f..6e6e9cef34a8 100644 --- a/arch/powerpc/kvm/book3s_segment.S +++ b/arch/powerpc/kvm/book3s_segment.S @@ -197,7 +197,8 @@ kvmppc_interrupt: /* Save guest PC and MSR */ #ifdef CONFIG_PPC64 BEGIN_FTR_SECTION - andi. r0,r12,0x2 + andi. r0, r12, 0x2 + cmpwi cr1, r0, 0 beq 1f mfspr r3,SPRN_HSRR0 mfspr r4,SPRN_HSRR1 @@ -250,6 +251,12 @@ END_FTR_SECTION_IFSET(CPU_FTR_HVMODE) beq ld_last_prev_inst cmpwi r12, BOOK3S_INTERRUPT_ALIGNMENT beq- ld_last_inst +#ifdef CONFIG_PPC64 +BEGIN_FTR_SECTION + cmpwi r12, BOOK3S_INTERRUPT_H_EMUL_ASSIST + beq- ld_last_inst +END_FTR_SECTION_IFSET(CPU_FTR_HVMODE) +#endif b no_ld_last_inst @@ -316,23 +323,17 @@ no_dcbz32_off: * Having set up SRR0/1 with the address where we want * to continue with relocation on (potentially in module * space), we either just go straight there with rfi[d], - * or we jump to an interrupt handler with bctr if there - * is an interrupt to be handled first. In the latter - * case, the rfi[d] at the end of the interrupt handler - * will get us back to where we want to continue. + * or we jump to an interrupt handler if there is an + * interrupt to be handled first. In the latter case, + * the rfi[d] at the end of the interrupt handler will + * get us back to where we want to continue. */ - cmpwi r12, BOOK3S_INTERRUPT_EXTERNAL - beq 1f - cmpwi r12, BOOK3S_INTERRUPT_DECREMENTER - beq 1f - cmpwi r12, BOOK3S_INTERRUPT_PERFMON -1: mtctr r12 - /* Register usage at this point: * * R1 = host R1 * R2 = host R2 + * R10 = raw exit handler id * R12 = exit handler id * R13 = shadow vcpu (32-bit) or PACA (64-bit) * SVCPU.* = guest * @@ -342,12 +343,25 @@ no_dcbz32_off: PPC_LL r6, HSTATE_HOST_MSR(r13) PPC_LL r8, HSTATE_VMHANDLER(r13) - /* Restore host msr -> SRR1 */ +#ifdef CONFIG_PPC64 +BEGIN_FTR_SECTION + beq cr1, 1f + mtspr SPRN_HSRR1, r6 + mtspr SPRN_HSRR0, r8 +END_FTR_SECTION_IFSET(CPU_FTR_HVMODE) +#endif +1: /* Restore host msr -> SRR1 */ mtsrr1 r6 /* Load highmem handler address */ mtsrr0 r8 /* RFI into the highmem handler, or jump to interrupt handler */ - beqctr + cmpwi r12, BOOK3S_INTERRUPT_EXTERNAL + beqa BOOK3S_INTERRUPT_EXTERNAL + cmpwi r12, BOOK3S_INTERRUPT_DECREMENTER + beqa BOOK3S_INTERRUPT_DECREMENTER + cmpwi r12, BOOK3S_INTERRUPT_PERFMON + beqa BOOK3S_INTERRUPT_PERFMON + RFI kvmppc_handler_trampoline_exit_end: diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h index 734c3767cfac..183922e13de1 100644 --- a/arch/x86/include/asm/kvm_para.h +++ b/arch/x86/include/asm/kvm_para.h @@ -170,6 +170,9 @@ static inline int kvm_para_available(void) unsigned int eax, ebx, ecx, edx; char signature[13]; + if (boot_cpu_data.cpuid_level < 0) + return 0; /* So we don't blow up on old processors */ + cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx); memcpy(signature + 0, &ebx, 4); memcpy(signature + 4, &ecx, 4); diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index a415b1f44365..7c439fe4941b 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -593,7 +593,7 @@ void __init acpi_set_irq_model_ioapic(void) #ifdef CONFIG_ACPI_HOTPLUG_CPU #include <acpi/processor.h> -static void __cpuinitdata acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) +static void __cpuinit acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) { #ifdef CONFIG_ACPI_NUMA int nid; diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index d086a09c087d..11c9166c3337 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -945,9 +945,10 @@ struct mce_info { atomic_t inuse; struct task_struct *t; __u64 paddr; + int restartable; } mce_info[MCE_INFO_MAX]; -static void mce_save_info(__u64 addr) +static void mce_save_info(__u64 addr, int c) { struct mce_info *mi; @@ -955,6 +956,7 @@ static void mce_save_info(__u64 addr) if (atomic_cmpxchg(&mi->inuse, 0, 1) == 0) { mi->t = current; mi->paddr = addr; + mi->restartable = c; return; } } @@ -1130,7 +1132,7 @@ void do_machine_check(struct pt_regs *regs, long error_code) mce_panic("Fatal machine check on current CPU", &m, msg); if (worst == MCE_AR_SEVERITY) { /* schedule action before return to userland */ - mce_save_info(m.addr); + mce_save_info(m.addr, m.mcgstatus & MCG_STATUS_RIPV); set_thread_flag(TIF_MCE_NOTIFY); } else if (kill_it) { force_sig(SIGBUS, current); @@ -1179,7 +1181,13 @@ void mce_notify_process(void) pr_err("Uncorrected hardware memory error in user-access at %llx", mi->paddr); - if (memory_failure(pfn, MCE_VECTOR, MF_ACTION_REQUIRED) < 0) { + /* + * We must call memory_failure() here even if the current process is + * doomed. We still need to mark the page as poisoned and alert any + * other users of the page. + */ + if (memory_failure(pfn, MCE_VECTOR, MF_ACTION_REQUIRED) < 0 || + mi->restartable == 0) { pr_err("Memory error not recovered"); force_sig(SIGBUS, current); } diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c index 3ca42d0e43a2..0327e2b3c408 100644 --- a/arch/x86/kernel/microcode_intel.c +++ b/arch/x86/kernel/microcode_intel.c @@ -147,12 +147,6 @@ static int collect_cpu_info(int cpu_num, struct cpu_signature *csig) memset(csig, 0, sizeof(*csig)); - if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 || - cpu_has(c, X86_FEATURE_IA64)) { - pr_err("CPU%d not a capable Intel processor\n", cpu_num); - return -1; - } - csig->sig = cpuid_eax(0x00000001); if ((c->x86_model >= 5) || (c->x86 > 6)) { @@ -463,6 +457,14 @@ static struct microcode_ops microcode_intel_ops = { struct microcode_ops * __init init_intel_microcode(void) { + struct cpuinfo_x86 *c = &cpu_data(0); + + if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 || + cpu_has(c, X86_FEATURE_IA64)) { + pr_err("Intel CPU family 0x%x not supported\n", c->x86); + return NULL; + } + return µcode_intel_ops; } |