diff options
Diffstat (limited to 'arch/s390')
-rw-r--r-- | arch/s390/include/asm/fpu/api.h | 2 | ||||
-rw-r--r-- | arch/s390/include/asm/percpu.h | 2 | ||||
-rw-r--r-- | arch/s390/kernel/dumpstack.c | 2 | ||||
-rw-r--r-- | arch/s390/kernel/kprobes.c | 4 | ||||
-rw-r--r-- | arch/s390/kernel/nmi.c | 2 | ||||
-rw-r--r-- | arch/s390/kernel/ptrace.c | 8 | ||||
-rw-r--r-- | arch/s390/kernel/setup.c | 1 | ||||
-rw-r--r-- | arch/s390/kernel/smp.c | 2 | ||||
-rw-r--r-- | arch/s390/kernel/sthyi.c | 6 | ||||
-rw-r--r-- | arch/s390/kernel/vmlinux.lds.S | 1 | ||||
-rw-r--r-- | arch/s390/kvm/intercept.c | 9 | ||||
-rw-r--r-- | arch/s390/kvm/kvm-s390.c | 4 | ||||
-rw-r--r-- | arch/s390/kvm/vsie.c | 4 | ||||
-rw-r--r-- | arch/s390/lib/uaccess.c | 2 | ||||
-rw-r--r-- | arch/s390/mm/maccess.c | 16 | ||||
-rw-r--r-- | arch/s390/mm/page-states.c | 14 | ||||
-rw-r--r-- | arch/s390/mm/pgtable.c | 2 | ||||
-rw-r--r-- | arch/s390/pci/pci_dma.c | 15 |
18 files changed, 60 insertions, 36 deletions
diff --git a/arch/s390/include/asm/fpu/api.h b/arch/s390/include/asm/fpu/api.h index 34a7ae68485c..be16a6c0f127 100644 --- a/arch/s390/include/asm/fpu/api.h +++ b/arch/s390/include/asm/fpu/api.h @@ -76,7 +76,7 @@ static inline int test_fp_ctl(u32 fpc) #define KERNEL_VXR_HIGH (KERNEL_VXR_V16V23|KERNEL_VXR_V24V31) #define KERNEL_VXR (KERNEL_VXR_LOW|KERNEL_VXR_HIGH) -#define KERNEL_FPR (KERNEL_FPC|KERNEL_VXR_V0V7) +#define KERNEL_FPR (KERNEL_FPC|KERNEL_VXR_LOW) struct kernel_fpu; diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h index 50f6661ba566..026a94b03a3c 100644 --- a/arch/s390/include/asm/percpu.h +++ b/arch/s390/include/asm/percpu.h @@ -31,7 +31,7 @@ pcp_op_T__ *ptr__; \ preempt_disable_notrace(); \ ptr__ = raw_cpu_ptr(&(pcp)); \ - prev__ = *ptr__; \ + prev__ = READ_ONCE(*ptr__); \ do { \ old__ = prev__; \ new__ = old__ op (val); \ diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c index 5b23c4f6e50c..7b21019096f4 100644 --- a/arch/s390/kernel/dumpstack.c +++ b/arch/s390/kernel/dumpstack.c @@ -187,5 +187,5 @@ void die(struct pt_regs *regs, const char *str) if (panic_on_oops) panic("Fatal exception: panic_on_oops"); oops_exit(); - do_exit(SIGSEGV); + make_task_dead(SIGSEGV); } diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c index 7c0a095e9c5f..b52ca21be367 100644 --- a/arch/s390/kernel/kprobes.c +++ b/arch/s390/kernel/kprobes.c @@ -254,6 +254,7 @@ static void pop_kprobe(struct kprobe_ctlblk *kcb) { __this_cpu_write(current_kprobe, kcb->prev_kprobe.kp); kcb->kprobe_status = kcb->prev_kprobe.status; + kcb->prev_kprobe.kp = NULL; } NOKPROBE_SYMBOL(pop_kprobe); @@ -508,12 +509,11 @@ static int post_kprobe_handler(struct pt_regs *regs) if (!p) return 0; + resume_execution(p, regs); if (kcb->kprobe_status != KPROBE_REENTER && p->post_handler) { kcb->kprobe_status = KPROBE_HIT_SSDONE; p->post_handler(p, regs, 0); } - - resume_execution(p, regs); pop_kprobe(kcb); preempt_enable_no_resched(); diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c index 8c867b43c8eb..471a965ae75a 100644 --- a/arch/s390/kernel/nmi.c +++ b/arch/s390/kernel/nmi.c @@ -179,7 +179,7 @@ void s390_handle_mcck(void) "malfunction (code 0x%016lx).\n", mcck.mcck_code); printk(KERN_EMERG "mcck: task: %s, pid: %d.\n", current->comm, current->pid); - do_exit(SIGSEGV); + make_task_dead(SIGSEGV); } } EXPORT_SYMBOL_GPL(s390_handle_mcck); diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 3ffa2847c110..c36289a3ad50 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -503,9 +503,7 @@ long arch_ptrace(struct task_struct *child, long request, } return 0; case PTRACE_GET_LAST_BREAK: - put_user(child->thread.last_break, - (unsigned long __user *) data); - return 0; + return put_user(child->thread.last_break, (unsigned long __user *)data); case PTRACE_ENABLE_TE: if (!MACHINE_HAS_TE) return -EIO; @@ -857,9 +855,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, } return 0; case PTRACE_GET_LAST_BREAK: - put_user(child->thread.last_break, - (unsigned int __user *) data); - return 0; + return put_user(child->thread.last_break, (unsigned int __user *)data); } return compat_ptrace_request(child, request, addr, data); } diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index bfd6c01a68f0..f54f5bfd83ad 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -909,6 +909,7 @@ void __init setup_arch(char **cmdline_p) if (IS_ENABLED(CONFIG_EXPOLINE_AUTO)) nospec_auto_detect(); + jump_label_init(); parse_early_param(); #ifdef CONFIG_CRASH_DUMP /* Deactivate elfcorehdr= kernel parameter */ diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index bce678c7179c..f272b662301e 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -145,7 +145,7 @@ static int pcpu_sigp_retry(struct pcpu *pcpu, u8 order, u32 parm) static inline int pcpu_stopped(struct pcpu *pcpu) { - u32 uninitialized_var(status); + u32 status; if (__pcpu_sigp(pcpu->address, SIGP_SENSE, 0, &status) != SIGP_CC_STATUS_STORED) diff --git a/arch/s390/kernel/sthyi.c b/arch/s390/kernel/sthyi.c index 888cc2f166db..ce6084e28d90 100644 --- a/arch/s390/kernel/sthyi.c +++ b/arch/s390/kernel/sthyi.c @@ -460,9 +460,9 @@ static int sthyi_update_cache(u64 *rc) * * Fills the destination with system information returned by the STHYI * instruction. The data is generated by emulation or execution of STHYI, - * if available. The return value is the condition code that would be - * returned, the rc parameter is the return code which is passed in - * register R2 + 1. + * if available. The return value is either a negative error value or + * the condition code that would be returned, the rc parameter is the + * return code which is passed in register R2 + 1. */ int sthyi_fill(void *dst, u64 *rc) { diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index 160a05c6ce88..04c3e56da0f2 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -153,5 +153,6 @@ SECTIONS DISCARDS /DISCARD/ : { *(.eh_frame) + *(.interp) } } diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c index a389fa85cca2..5450d43d26ea 100644 --- a/arch/s390/kvm/intercept.c +++ b/arch/s390/kvm/intercept.c @@ -360,8 +360,8 @@ static int handle_partial_execution(struct kvm_vcpu *vcpu) */ int handle_sthyi(struct kvm_vcpu *vcpu) { - int reg1, reg2, r = 0; - u64 code, addr, cc = 0, rc = 0; + int reg1, reg2, cc = 0, r = 0; + u64 code, addr, rc = 0; struct sthyi_sctns *sctns = NULL; if (!test_kvm_facility(vcpu->kvm, 74)) @@ -392,7 +392,10 @@ int handle_sthyi(struct kvm_vcpu *vcpu) return -ENOMEM; cc = sthyi_fill(sctns, &rc); - + if (cc < 0) { + free_page((unsigned long)sctns); + return cc; + } out: if (!cc) { r = write_guest(vcpu, addr, reg2, sctns, PAGE_SIZE); diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 3aade928c18d..92041d442d2e 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -1716,6 +1716,10 @@ static unsigned long kvm_s390_next_dirty_cmma(struct kvm_memslots *slots, ms = slots->memslots + slotidx; ofs = 0; } + + if (cur_gfn < ms->base_gfn) + ofs = 0; + ofs = find_next_bit(kvm_second_dirty_bitmap(ms), ms->npages, ofs); while ((slotidx > 0) && (ofs >= ms->npages)) { slotidx--; diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index 17d73b71df1d..df5d44a7c3de 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -376,8 +376,10 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_CEI)) scb_s->eca |= scb_o->eca & ECA_CEI; /* Epoch Extension */ - if (test_kvm_facility(vcpu->kvm, 139)) + if (test_kvm_facility(vcpu->kvm, 139)) { scb_s->ecd |= scb_o->ecd & ECD_MEF; + scb_s->epdx = scb_o->epdx; + } /* etoken */ if (test_kvm_facility(vcpu->kvm, 156)) diff --git a/arch/s390/lib/uaccess.c b/arch/s390/lib/uaccess.c index 0267405ab7c6..fcfd78f99cb4 100644 --- a/arch/s390/lib/uaccess.c +++ b/arch/s390/lib/uaccess.c @@ -339,7 +339,7 @@ static inline unsigned long clear_user_mvcos(void __user *to, unsigned long size "4: slgr %0,%0\n" "5:\n" EX_TABLE(0b,2b) EX_TABLE(3b,5b) - : "+a" (size), "+a" (to), "+a" (tmp1), "=a" (tmp2) + : "+&a" (size), "+&a" (to), "+a" (tmp1), "=&a" (tmp2) : "a" (empty_zero_page), "d" (reg0) : "cc", "memory"); return size; } diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c index 7be06475809b..a40739ea3805 100644 --- a/arch/s390/mm/maccess.c +++ b/arch/s390/mm/maccess.c @@ -58,13 +58,19 @@ static notrace long s390_kernel_write_odd(void *dst, const void *src, size_t siz */ void notrace s390_kernel_write(void *dst, const void *src, size_t size) { + unsigned long flags; long copied; - while (size) { - copied = s390_kernel_write_odd(dst, src, size); - dst += copied; - src += copied; - size -= copied; + flags = arch_local_save_flags(); + if (!(flags & PSW_MASK_DAT)) { + memcpy(dst, src, size); + } else { + while (size) { + copied = s390_kernel_write_odd(dst, src, size); + dst += copied; + src += copied; + size -= copied; + } } } diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c index dc3cede7f2ec..182240411211 100644 --- a/arch/s390/mm/page-states.c +++ b/arch/s390/mm/page-states.c @@ -118,7 +118,7 @@ static void mark_kernel_pmd(pud_t *pud, unsigned long addr, unsigned long end) next = pmd_addr_end(addr, end); if (pmd_none(*pmd) || pmd_large(*pmd)) continue; - page = virt_to_page(pmd_val(*pmd)); + page = phys_to_page(pmd_val(*pmd)); set_bit(PG_arch_1, &page->flags); } while (pmd++, addr = next, addr != end); } @@ -136,8 +136,8 @@ static void mark_kernel_pud(p4d_t *p4d, unsigned long addr, unsigned long end) if (pud_none(*pud) || pud_large(*pud)) continue; if (!pud_folded(*pud)) { - page = virt_to_page(pud_val(*pud)); - for (i = 0; i < 3; i++) + page = phys_to_page(pud_val(*pud)); + for (i = 0; i < 4; i++) set_bit(PG_arch_1, &page[i].flags); } mark_kernel_pmd(pud, addr, next); @@ -157,8 +157,8 @@ static void mark_kernel_p4d(pgd_t *pgd, unsigned long addr, unsigned long end) if (p4d_none(*p4d)) continue; if (!p4d_folded(*p4d)) { - page = virt_to_page(p4d_val(*p4d)); - for (i = 0; i < 3; i++) + page = phys_to_page(p4d_val(*p4d)); + for (i = 0; i < 4; i++) set_bit(PG_arch_1, &page[i].flags); } mark_kernel_pud(p4d, addr, next); @@ -179,8 +179,8 @@ static void mark_kernel_pgd(void) if (pgd_none(*pgd)) continue; if (!pgd_folded(*pgd)) { - page = virt_to_page(pgd_val(*pgd)); - for (i = 0; i < 3; i++) + page = phys_to_page(pgd_val(*pgd)); + for (i = 0; i < 4; i++) set_bit(PG_arch_1, &page[i].flags); } mark_kernel_p4d(pgd, addr, next); diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 9f3903089869..758e8e9eee4f 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -699,7 +699,7 @@ void ptep_zap_unused(struct mm_struct *mm, unsigned long addr, pte_clear(mm, addr, ptep); } if (reset) - pgste_val(pgste) &= ~_PGSTE_GPS_USAGE_MASK; + pgste_val(pgste) &= ~(_PGSTE_GPS_USAGE_MASK | _PGSTE_GPS_NODAT); pgste_set_unlock(ptep, pgste); preempt_enable(); } diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c index d387a0fbdd7e..76d27a5947d5 100644 --- a/arch/s390/pci/pci_dma.c +++ b/arch/s390/pci/pci_dma.c @@ -545,6 +545,17 @@ static void s390_dma_unmap_sg(struct device *dev, struct scatterlist *sg, s->dma_length = 0; } } + +static unsigned long *bitmap_vzalloc(size_t bits, gfp_t flags) +{ + size_t n = BITS_TO_LONGS(bits); + size_t bytes; + + if (unlikely(check_mul_overflow(n, sizeof(unsigned long), &bytes))) + return NULL; + + return vzalloc(bytes); +} static int s390_mapping_error(struct device *dev, dma_addr_t dma_addr) { @@ -586,13 +597,13 @@ int zpci_dma_init_device(struct zpci_dev *zdev) zdev->end_dma - zdev->start_dma + 1); zdev->end_dma = zdev->start_dma + zdev->iommu_size - 1; zdev->iommu_pages = zdev->iommu_size >> PAGE_SHIFT; - zdev->iommu_bitmap = vzalloc(zdev->iommu_pages / 8); + zdev->iommu_bitmap = bitmap_vzalloc(zdev->iommu_pages, GFP_KERNEL); if (!zdev->iommu_bitmap) { rc = -ENOMEM; goto free_dma_table; } if (!s390_iommu_strict) { - zdev->lazy_bitmap = vzalloc(zdev->iommu_pages / 8); + zdev->lazy_bitmap = bitmap_vzalloc(zdev->iommu_pages, GFP_KERNEL); if (!zdev->lazy_bitmap) { rc = -ENOMEM; goto free_bitmap; |