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-rw-r--r--arch/s390/include/asm/fpu/api.h2
-rw-r--r--arch/s390/include/asm/percpu.h2
-rw-r--r--arch/s390/kernel/dumpstack.c2
-rw-r--r--arch/s390/kernel/kprobes.c4
-rw-r--r--arch/s390/kernel/nmi.c2
-rw-r--r--arch/s390/kernel/ptrace.c8
-rw-r--r--arch/s390/kernel/setup.c1
-rw-r--r--arch/s390/kernel/smp.c2
-rw-r--r--arch/s390/kernel/sthyi.c6
-rw-r--r--arch/s390/kernel/vmlinux.lds.S1
-rw-r--r--arch/s390/kvm/intercept.c9
-rw-r--r--arch/s390/kvm/kvm-s390.c4
-rw-r--r--arch/s390/kvm/vsie.c4
-rw-r--r--arch/s390/lib/uaccess.c2
-rw-r--r--arch/s390/mm/maccess.c16
-rw-r--r--arch/s390/mm/page-states.c14
-rw-r--r--arch/s390/mm/pgtable.c2
-rw-r--r--arch/s390/pci/pci_dma.c15
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;
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-20 16:18:03 +0000