summaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/Kconfig11
-rw-r--r--arch/s390/appldata/appldata_base.c2
-rw-r--r--arch/s390/include/asm/cmpxchg.h1
-rw-r--r--arch/s390/include/asm/elf.h12
-rw-r--r--arch/s390/include/asm/hugetlb.h17
-rw-r--r--arch/s390/include/asm/irq.h1
-rw-r--r--arch/s390/include/asm/lowcore.h4
-rw-r--r--arch/s390/include/asm/mmu.h9
-rw-r--r--arch/s390/include/asm/mmu_context.h6
-rw-r--r--arch/s390/include/asm/page.h60
-rw-r--r--arch/s390/include/asm/percpu.h68
-rw-r--r--arch/s390/include/asm/pgalloc.h57
-rw-r--r--arch/s390/include/asm/pgtable.h607
-rw-r--r--arch/s390/include/asm/processor.h1
-rw-r--r--arch/s390/include/asm/tlbflush.h13
-rw-r--r--arch/s390/include/asm/unistd.h1
-rw-r--r--arch/s390/kernel/asm-offsets.c4
-rw-r--r--arch/s390/kernel/entry.S1
-rw-r--r--arch/s390/kernel/entry64.S1
-rw-r--r--arch/s390/kernel/irq.c1
-rw-r--r--arch/s390/kernel/process.c19
-rw-r--r--arch/s390/kernel/setup.c31
-rw-r--r--arch/s390/kernel/smp.c30
-rw-r--r--arch/s390/kernel/time.c4
-rw-r--r--arch/s390/kernel/topology.c16
-rw-r--r--arch/s390/kernel/vdso32/Makefile3
-rw-r--r--arch/s390/kernel/vdso64/Makefile3
-rw-r--r--arch/s390/mm/extmem.c6
-rw-r--r--arch/s390/mm/fault.c187
-rw-r--r--arch/s390/mm/hugetlbpage.c10
-rw-r--r--arch/s390/mm/init.c3
-rw-r--r--arch/s390/mm/pageattr.c2
-rw-r--r--arch/s390/mm/pgtable.c68
-rw-r--r--arch/s390/mm/vmem.c14
-rw-r--r--arch/s390/oprofile/hwsampler.c21
35 files changed, 626 insertions, 668 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 4a7f14079e03..ff2d2371b2e9 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -230,17 +230,6 @@ config SYSVIPC_COMPAT
config AUDIT_ARCH
def_bool y
-config S390_EXEC_PROTECT
- def_bool y
- prompt "Data execute protection"
- help
- This option allows to enable a buffer overflow protection for user
- space programs and it also selects the addressing mode option above.
- The kernel parameter noexec=on will enable this feature and also
- switch the addressing modes, default is disabled. Enabling this (via
- kernel parameter) on machines earlier than IBM System z9 this will
- reduce system performance.
-
comment "Code generation options"
choice
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index 5c91995b74e4..24bff4f1cc52 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -130,9 +130,7 @@ static void appldata_work_fn(struct work_struct *work)
{
struct list_head *lh;
struct appldata_ops *ops;
- int i;
- i = 0;
get_online_cpus();
mutex_lock(&appldata_ops_mutex);
list_for_each(lh, &appldata_ops_list) {
diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h
index 7488e52efa97..81d7908416cf 100644
--- a/arch/s390/include/asm/cmpxchg.h
+++ b/arch/s390/include/asm/cmpxchg.h
@@ -167,7 +167,6 @@ static inline unsigned long __cmpxchg(void *ptr, unsigned long old,
#ifdef CONFIG_64BIT
#define cmpxchg64(ptr, o, n) \
({ \
- BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
cmpxchg((ptr), (o), (n)); \
})
#else /* CONFIG_64BIT */
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 10c029cfcc7d..64b61bf72e93 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -196,18 +196,6 @@ do { \
} while (0)
#endif /* __s390x__ */
-/*
- * An executable for which elf_read_implies_exec() returns TRUE will
- * have the READ_IMPLIES_EXEC personality flag set automatically.
- */
-#define elf_read_implies_exec(ex, executable_stack) \
-({ \
- if (current->mm->context.noexec && \
- executable_stack != EXSTACK_DISABLE_X) \
- disable_noexec(current->mm, current); \
- current->mm->context.noexec == 0; \
-})
-
#define STACK_RND_MASK 0x7ffUL
#define ARCH_DLINFO \
diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h
index b56403c2df28..799ed0f1643d 100644
--- a/arch/s390/include/asm/hugetlb.h
+++ b/arch/s390/include/asm/hugetlb.h
@@ -111,21 +111,10 @@ static inline void huge_ptep_invalidate(struct mm_struct *mm,
{
pmd_t *pmdp = (pmd_t *) ptep;
- if (!MACHINE_HAS_IDTE) {
- __pmd_csp(pmdp);
- if (mm->context.noexec) {
- pmdp = get_shadow_table(pmdp);
- __pmd_csp(pmdp);
- }
- return;
- }
-
- __pmd_idte(address, pmdp);
- if (mm->context.noexec) {
- pmdp = get_shadow_table(pmdp);
+ if (MACHINE_HAS_IDTE)
__pmd_idte(address, pmdp);
- }
- return;
+ else
+ __pmd_csp(pmdp);
}
#define huge_ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty) \
diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h
index db14a311f1d2..1544b90bd6d6 100644
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -15,6 +15,7 @@ enum interruption_class {
EXTINT_VRT,
EXTINT_SCP,
EXTINT_IUC,
+ EXTINT_CPM,
IOINT_QAI,
IOINT_QDI,
IOINT_DAS,
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 65e172f8209d..228cf0b295db 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -124,7 +124,7 @@ struct _lowcore {
/* Address space pointer. */
__u32 kernel_asce; /* 0x02ac */
__u32 user_asce; /* 0x02b0 */
- __u32 user_exec_asce; /* 0x02b4 */
+ __u32 current_pid; /* 0x02b4 */
/* SMP info area */
__u32 cpu_nr; /* 0x02b8 */
@@ -255,7 +255,7 @@ struct _lowcore {
/* Address space pointer. */
__u64 kernel_asce; /* 0x0310 */
__u64 user_asce; /* 0x0318 */
- __u64 user_exec_asce; /* 0x0320 */
+ __u64 current_pid; /* 0x0320 */
/* SMP info area */
__u32 cpu_nr; /* 0x0328 */
diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h
index 78522cdefdd4..82d0847896a0 100644
--- a/arch/s390/include/asm/mmu.h
+++ b/arch/s390/include/asm/mmu.h
@@ -5,19 +5,18 @@ typedef struct {
atomic_t attach_count;
unsigned int flush_mm;
spinlock_t list_lock;
- struct list_head crst_list;
struct list_head pgtable_list;
unsigned long asce_bits;
unsigned long asce_limit;
unsigned long vdso_base;
- int noexec;
- int has_pgste; /* The mmu context has extended page tables */
- int alloc_pgste; /* cloned contexts will have extended page tables */
+ /* Cloned contexts will be created with extended page tables. */
+ unsigned int alloc_pgste:1;
+ /* The mmu context has extended page tables. */
+ unsigned int has_pgste:1;
} mm_context_t;
#define INIT_MM_CONTEXT(name) \
.context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \
- .context.crst_list = LIST_HEAD_INIT(name.context.crst_list), \
.context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list),
#endif
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 8c277caa8d3a..5682f160ff82 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -35,11 +35,9 @@ static inline int init_new_context(struct task_struct *tsk,
* and if has_pgste is set, it will create extended page
* tables.
*/
- mm->context.noexec = 0;
mm->context.has_pgste = 1;
mm->context.alloc_pgste = 1;
} else {
- mm->context.noexec = (user_mode == SECONDARY_SPACE_MODE);
mm->context.has_pgste = 0;
mm->context.alloc_pgste = 0;
}
@@ -63,10 +61,8 @@ static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk)
S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd);
if (user_mode != HOME_SPACE_MODE) {
/* Load primary space page table origin. */
- pgd = mm->context.noexec ? get_shadow_table(pgd) : pgd;
- S390_lowcore.user_exec_asce = mm->context.asce_bits | __pa(pgd);
asm volatile(LCTL_OPCODE" 1,1,%0\n"
- : : "m" (S390_lowcore.user_exec_asce) );
+ : : "m" (S390_lowcore.user_asce) );
} else
/* Load home space page table origin. */
asm volatile(LCTL_OPCODE" 13,13,%0"
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 3c987e9ec8d6..accb372ddc7e 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -90,6 +90,7 @@ static inline void copy_page(void *to, void *from)
*/
typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct { unsigned long pgste; } pgste_t;
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pmd; } pmd_t;
typedef struct { unsigned long pud; } pud_t;
@@ -97,18 +98,21 @@ typedef struct { unsigned long pgd; } pgd_t;
typedef pte_t *pgtable_t;
#define pgprot_val(x) ((x).pgprot)
+#define pgste_val(x) ((x).pgste)
#define pte_val(x) ((x).pte)
#define pmd_val(x) ((x).pmd)
#define pud_val(x) ((x).pud)
#define pgd_val(x) ((x).pgd)
+#define __pgste(x) ((pgste_t) { (x) } )
#define __pte(x) ((pte_t) { (x) } )
#define __pmd(x) ((pmd_t) { (x) } )
+#define __pud(x) ((pud_t) { (x) } )
#define __pgd(x) ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
-static inline void
-page_set_storage_key(unsigned long addr, unsigned int skey, int mapped)
+static inline void page_set_storage_key(unsigned long addr,
+ unsigned char skey, int mapped)
{
if (!mapped)
asm volatile(".insn rrf,0xb22b0000,%0,%1,8,0"
@@ -117,15 +121,59 @@ page_set_storage_key(unsigned long addr, unsigned int skey, int mapped)
asm volatile("sske %0,%1" : : "d" (skey), "a" (addr));
}
-static inline unsigned int
-page_get_storage_key(unsigned long addr)
+static inline unsigned char page_get_storage_key(unsigned long addr)
{
- unsigned int skey;
+ unsigned char skey;
- asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr), "0" (0));
+ asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr));
return skey;
}
+static inline int page_reset_referenced(unsigned long addr)
+{
+ unsigned int ipm;
+
+ asm volatile(
+ " rrbe 0,%1\n"
+ " ipm %0\n"
+ : "=d" (ipm) : "a" (addr) : "cc");
+ return !!(ipm & 0x20000000);
+}
+
+/* Bits int the storage key */
+#define _PAGE_CHANGED 0x02 /* HW changed bit */
+#define _PAGE_REFERENCED 0x04 /* HW referenced bit */
+#define _PAGE_FP_BIT 0x08 /* HW fetch protection bit */
+#define _PAGE_ACC_BITS 0xf0 /* HW access control bits */
+
+/*
+ * Test and clear dirty bit in storage key.
+ * We can't clear the changed bit atomically. This is a potential
+ * race against modification of the referenced bit. This function
+ * should therefore only be called if it is not mapped in any
+ * address space.
+ */
+#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY
+static inline int page_test_and_clear_dirty(unsigned long pfn, int mapped)
+{
+ unsigned char skey;
+
+ skey = page_get_storage_key(pfn << PAGE_SHIFT);
+ if (!(skey & _PAGE_CHANGED))
+ return 0;
+ page_set_storage_key(pfn << PAGE_SHIFT, skey & ~_PAGE_CHANGED, mapped);
+ return 1;
+}
+
+/*
+ * Test and clear referenced bit in storage key.
+ */
+#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
+static inline int page_test_and_clear_young(unsigned long pfn)
+{
+ return page_reset_referenced(pfn << PAGE_SHIFT);
+}
+
struct page;
void arch_free_page(struct page *page, int order);
void arch_alloc_page(struct page *page, int order);
diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h
index f7ad8719d02d..5325c89a5843 100644
--- a/arch/s390/include/asm/percpu.h
+++ b/arch/s390/include/asm/percpu.h
@@ -1,6 +1,9 @@
#ifndef __ARCH_S390_PERCPU__
#define __ARCH_S390_PERCPU__
+#include <linux/preempt.h>
+#include <asm/cmpxchg.h>
+
/*
* s390 uses its own implementation for per cpu data, the offset of
* the cpu local data area is cached in the cpu's lowcore memory.
@@ -16,6 +19,71 @@
#define ARCH_NEEDS_WEAK_PER_CPU
#endif
+#define arch_irqsafe_cpu_to_op(pcp, val, op) \
+do { \
+ typedef typeof(pcp) pcp_op_T__; \
+ pcp_op_T__ old__, new__, prev__; \
+ pcp_op_T__ *ptr__; \
+ preempt_disable(); \
+ ptr__ = __this_cpu_ptr(&(pcp)); \
+ prev__ = *ptr__; \
+ do { \
+ old__ = prev__; \
+ new__ = old__ op (val); \
+ switch (sizeof(*ptr__)) { \
+ case 8: \
+ prev__ = cmpxchg64(ptr__, old__, new__); \
+ break; \
+ default: \
+ prev__ = cmpxchg(ptr__, old__, new__); \
+ } \
+ } while (prev__ != old__); \
+ preempt_enable(); \
+} while (0)
+
+#define irqsafe_cpu_add_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
+#define irqsafe_cpu_add_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
+#define irqsafe_cpu_add_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
+#define irqsafe_cpu_add_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
+
+#define irqsafe_cpu_and_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
+#define irqsafe_cpu_and_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
+#define irqsafe_cpu_and_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
+#define irqsafe_cpu_and_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
+
+#define irqsafe_cpu_or_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
+#define irqsafe_cpu_or_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
+#define irqsafe_cpu_or_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
+#define irqsafe_cpu_or_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
+
+#define irqsafe_cpu_xor_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
+#define irqsafe_cpu_xor_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
+#define irqsafe_cpu_xor_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
+#define irqsafe_cpu_xor_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
+
+#define arch_irqsafe_cpu_cmpxchg(pcp, oval, nval) \
+({ \
+ typedef typeof(pcp) pcp_op_T__; \
+ pcp_op_T__ ret__; \
+ pcp_op_T__ *ptr__; \
+ preempt_disable(); \
+ ptr__ = __this_cpu_ptr(&(pcp)); \
+ switch (sizeof(*ptr__)) { \
+ case 8: \
+ ret__ = cmpxchg64(ptr__, oval, nval); \
+ break; \
+ default: \
+ ret__ = cmpxchg(ptr__, oval, nval); \
+ } \
+ preempt_enable(); \
+ ret__; \
+})
+
+#define irqsafe_cpu_cmpxchg_1(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
+#define irqsafe_cpu_cmpxchg_2(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
+#define irqsafe_cpu_cmpxchg_4(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
+#define irqsafe_cpu_cmpxchg_8(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
+
#include <asm-generic/percpu.h>
#endif /* __ARCH_S390_PERCPU__ */
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index 082eb4e50e8b..f6314af3b354 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -19,14 +19,13 @@
#define check_pgt_cache() do {} while (0)
-unsigned long *crst_table_alloc(struct mm_struct *, int);
+unsigned long *crst_table_alloc(struct mm_struct *);
void crst_table_free(struct mm_struct *, unsigned long *);
void crst_table_free_rcu(struct mm_struct *, unsigned long *);
unsigned long *page_table_alloc(struct mm_struct *);
void page_table_free(struct mm_struct *, unsigned long *);
void page_table_free_rcu(struct mm_struct *, unsigned long *);
-void disable_noexec(struct mm_struct *, struct task_struct *);
static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
{
@@ -50,9 +49,6 @@ static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
static inline void crst_table_init(unsigned long *crst, unsigned long entry)
{
clear_table(crst, entry, sizeof(unsigned long)*2048);
- crst = get_shadow_table(crst);
- if (crst)
- clear_table(crst, entry, sizeof(unsigned long)*2048);
}
#ifndef __s390x__
@@ -69,10 +65,7 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm)
#define pmd_free(mm, x) do { } while (0)
#define pgd_populate(mm, pgd, pud) BUG()
-#define pgd_populate_kernel(mm, pgd, pud) BUG()
-
#define pud_populate(mm, pud, pmd) BUG()
-#define pud_populate_kernel(mm, pud, pmd) BUG()
#else /* __s390x__ */
@@ -90,7 +83,7 @@ void crst_table_downgrade(struct mm_struct *, unsigned long limit);
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
{
- unsigned long *table = crst_table_alloc(mm, mm->context.noexec);
+ unsigned long *table = crst_table_alloc(mm);
if (table)
crst_table_init(table, _REGION3_ENTRY_EMPTY);
return (pud_t *) table;
@@ -99,43 +92,21 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
{
- unsigned long *table = crst_table_alloc(mm, mm->context.noexec);
+ unsigned long *table = crst_table_alloc(mm);
if (table)
crst_table_init(table, _SEGMENT_ENTRY_EMPTY);
return (pmd_t *) table;
}
#define pmd_free(mm, pmd) crst_table_free(mm, (unsigned long *) pmd)
-static inline void pgd_populate_kernel(struct mm_struct *mm,
- pgd_t *pgd, pud_t *pud)
-{
- pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud);
-}
-
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
{
- pgd_populate_kernel(mm, pgd, pud);
- if (mm->context.noexec) {
- pgd = get_shadow_table(pgd);
- pud = get_shadow_table(pud);
- pgd_populate_kernel(mm, pgd, pud);
- }
-}
-
-static inline void pud_populate_kernel(struct mm_struct *mm,
- pud_t *pud, pmd_t *pmd)
-{
- pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
+ pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud);
}
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
- pud_populate_kernel(mm, pud, pmd);
- if (mm->context.noexec) {
- pud = get_shadow_table(pud);
- pmd = get_shadow_table(pmd);
- pud_populate_kernel(mm, pud, pmd);
- }
+ pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
}
#endif /* __s390x__ */
@@ -143,29 +114,19 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
spin_lock_init(&mm->context.list_lock);
- INIT_LIST_HEAD(&mm->context.crst_list);
INIT_LIST_HEAD(&mm->context.pgtable_list);
- return (pgd_t *)
- crst_table_alloc(mm, user_mode == SECONDARY_SPACE_MODE);
+ return (pgd_t *) crst_table_alloc(mm);
}
#define pgd_free(mm, pgd) crst_table_free(mm, (unsigned long *) pgd)
-static inline void pmd_populate_kernel(struct mm_struct *mm,
- pmd_t *pmd, pte_t *pte)
-{
- pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte);
-}
-
static inline void pmd_populate(struct mm_struct *mm,
pmd_t *pmd, pgtable_t pte)
{
- pmd_populate_kernel(mm, pmd, pte);
- if (mm->context.noexec) {
- pmd = get_shadow_table(pmd);
- pmd_populate_kernel(mm, pmd, pte + PTRS_PER_PTE);
- }
+ pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte);
}
+#define pmd_populate_kernel(mm, pmd, pte) pmd_populate(mm, pmd, pte)
+
#define pmd_pgtable(pmd) \
(pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE)
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 02ace3491c51..c4773a2ef3d3 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -31,9 +31,8 @@
#ifndef __ASSEMBLY__
#include <linux/sched.h>
#include <linux/mm_types.h>
-#include <asm/bitops.h>
#include <asm/bug.h>
-#include <asm/processor.h>
+#include <asm/page.h>
extern pgd_t swapper_pg_dir[] __attribute__ ((aligned (4096)));
extern void paging_init(void);
@@ -243,11 +242,13 @@ extern unsigned long VMALLOC_START;
/* Software bits in the page table entry */
#define _PAGE_SWT 0x001 /* SW pte type bit t */
#define _PAGE_SWX 0x002 /* SW pte type bit x */
-#define _PAGE_SPECIAL 0x004 /* SW associated with special page */
+#define _PAGE_SWC 0x004 /* SW pte changed bit (for KVM) */
+#define _PAGE_SWR 0x008 /* SW pte referenced bit (for KVM) */
+#define _PAGE_SPECIAL 0x010 /* SW associated with special page */
#define __HAVE_ARCH_PTE_SPECIAL
/* Set of bits not changed in pte_modify */
-#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL)
+#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL | _PAGE_SWC | _PAGE_SWR)
/* Six different types of pages. */
#define _PAGE_TYPE_EMPTY 0x400
@@ -256,8 +257,6 @@ extern unsigned long VMALLOC_START;
#define _PAGE_TYPE_FILE 0x601 /* bit 0x002 is used for offset !! */
#define _PAGE_TYPE_RO 0x200
#define _PAGE_TYPE_RW 0x000
-#define _PAGE_TYPE_EX_RO 0x202
-#define _PAGE_TYPE_EX_RW 0x002
/*
* Only four types for huge pages, using the invalid bit and protection bit
@@ -287,8 +286,6 @@ extern unsigned long VMALLOC_START;
* _PAGE_TYPE_FILE 11?1 -> 11?1
* _PAGE_TYPE_RO 0100 -> 1100
* _PAGE_TYPE_RW 0000 -> 1000
- * _PAGE_TYPE_EX_RO 0110 -> 1110
- * _PAGE_TYPE_EX_RW 0010 -> 1010
*
* pte_none is true for bits combinations 1000, 1010, 1100, 1110
* pte_present is true for bits combinations 0000, 0010, 0100, 0110, 1001
@@ -297,14 +294,17 @@ extern unsigned long VMALLOC_START;
*/
/* Page status table bits for virtualization */
-#define RCP_PCL_BIT 55
-#define RCP_HR_BIT 54
-#define RCP_HC_BIT 53
-#define RCP_GR_BIT 50
-#define RCP_GC_BIT 49
-
-/* User dirty bit for KVM's migration feature */
-#define KVM_UD_BIT 47
+#define RCP_ACC_BITS 0xf000000000000000UL
+#define RCP_FP_BIT 0x0800000000000000UL
+#define RCP_PCL_BIT 0x0080000000000000UL
+#define RCP_HR_BIT 0x0040000000000000UL
+#define RCP_HC_BIT 0x0020000000000000UL
+#define RCP_GR_BIT 0x0004000000000000UL
+#define RCP_GC_BIT 0x0002000000000000UL
+
+/* User dirty / referenced bit for KVM's migration feature */
+#define KVM_UR_BIT 0x0000800000000000UL
+#define KVM_UC_BIT 0x0000400000000000UL
#ifndef __s390x__
@@ -377,85 +377,54 @@ extern unsigned long VMALLOC_START;
#define _ASCE_USER_BITS (_ASCE_SPACE_SWITCH | _ASCE_PRIVATE_SPACE | \
_ASCE_ALT_EVENT)
-/* Bits int the storage key */
-#define _PAGE_CHANGED 0x02 /* HW changed bit */
-#define _PAGE_REFERENCED 0x04 /* HW referenced bit */
-
/*
* Page protection definitions.
*/
#define PAGE_NONE __pgprot(_PAGE_TYPE_NONE)
#define PAGE_RO __pgprot(_PAGE_TYPE_RO)
#define PAGE_RW __pgprot(_PAGE_TYPE_RW)
-#define PAGE_EX_RO __pgprot(_PAGE_TYPE_EX_RO)
-#define PAGE_EX_RW __pgprot(_PAGE_TYPE_EX_RW)
#define PAGE_KERNEL PAGE_RW
#define PAGE_COPY PAGE_RO
/*
- * Dependent on the EXEC_PROTECT option s390 can do execute protection.
- * Write permission always implies read permission. In theory with a
- * primary/secondary page table execute only can be implemented but
- * it would cost an additional bit in the pte to distinguish all the
- * different pte types. To avoid that execute permission currently
- * implies read permission as well.
+ * On s390 the page table entry has an invalid bit and a read-only bit.
+ * Read permission implies execute permission and write permission
+ * implies read permission.
*/
/*xwr*/
#define __P000 PAGE_NONE
#define __P001 PAGE_RO
#define __P010 PAGE_RO
#define __P011 PAGE_RO
-#define __P100 PAGE_EX_RO
-#define __P101 PAGE_EX_RO
-#define __P110 PAGE_EX_RO
-#define __P111 PAGE_EX_RO
+#define __P100 PAGE_RO
+#define __P101 PAGE_RO
+#define __P110 PAGE_RO
+#define __P111 PAGE_RO
#define __S000 PAGE_NONE
#define __S001 PAGE_RO
#define __S010 PAGE_RW
#define __S011 PAGE_RW
-#define __S100 PAGE_EX_RO
-#define __S101 PAGE_EX_RO
-#define __S110 PAGE_EX_RW
-#define __S111 PAGE_EX_RW
-
-#ifndef __s390x__
-# define PxD_SHADOW_SHIFT 1
-#else /* __s390x__ */
-# define PxD_SHADOW_SHIFT 2
-#endif /* __s390x__ */
+#define __S100 PAGE_RO
+#define __S101 PAGE_RO
+#define __S110 PAGE_RW
+#define __S111 PAGE_RW
-static inline void *get_shadow_table(void *table)
+static inline int mm_exclusive(struct mm_struct *mm)
{
- unsigned long addr, offset;
- struct page *page;
-
- addr = (unsigned long) table;
- offset = addr & ((PAGE_SIZE << PxD_SHADOW_SHIFT) - 1);
- page = virt_to_page((void *)(addr ^ offset));
- return (void *)(addr_t)(page->index ? (page->index | offset) : 0UL);
+ return likely(mm == current->active_mm &&
+ atomic_read(&mm->context.attach_count) <= 1);
}
-/*
- * Certain architectures need to do special things when PTEs
- * within a page table are directly modified. Thus, the following
- * hook is made available.
- */
-static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t entry)
+static inline int mm_has_pgste(struct mm_struct *mm)
{
- *ptep = entry;
- if (mm->context.noexec) {
- if (!(pte_val(entry) & _PAGE_INVALID) &&
- (pte_val(entry) & _PAGE_SWX))
- pte_val(entry) |= _PAGE_RO;
- else
- pte_val(entry) = _PAGE_TYPE_EMPTY;
- ptep[PTRS_PER_PTE] = entry;
- }
+#ifdef CONFIG_PGSTE
+ if (unlikely(mm->context.has_pgste))
+ return 1;
+#endif
+ return 0;
}
-
/*
* pgd/pmd/pte query functions
*/
@@ -568,52 +537,127 @@ static inline int pte_special(pte_t pte)
}
#define __HAVE_ARCH_PTE_SAME
-#define pte_same(a,b) (pte_val(a) == pte_val(b))
+static inline int pte_same(pte_t a, pte_t b)
+{
+ return pte_val(a) == pte_val(b);
+}
-static inline void rcp_lock(pte_t *ptep)
+static inline pgste_t pgste_get_lock(pte_t *ptep)
{
+ unsigned long new = 0;
#ifdef CONFIG_PGSTE
- unsigned long *pgste = (unsigned long *) (ptep + PTRS_PER_PTE);
+ unsigned long old;
+
preempt_disable();
- while (test_and_set_bit(RCP_PCL_BIT, pgste))
- ;
+ asm(
+ " lg %0,%2\n"
+ "0: lgr %1,%0\n"
+ " nihh %0,0xff7f\n" /* clear RCP_PCL_BIT in old */
+ " oihh %1,0x0080\n" /* set RCP_PCL_BIT in new */
+ " csg %0,%1,%2\n"
+ " jl 0b\n"
+ : "=&d" (old), "=&d" (new), "=Q" (ptep[PTRS_PER_PTE])
+ : "Q" (ptep[PTRS_PER_PTE]) : "cc");
#endif
+ return __pgste(new);
}
-static inline void rcp_unlock(pte_t *ptep)
+static inline void pgste_set_unlock(pte_t *ptep, pgste_t pgste)
{
#ifdef CONFIG_PGSTE
- unsigned long *pgste = (unsigned long *) (ptep + PTRS_PER_PTE);
- clear_bit(RCP_PCL_BIT, pgste);
+ asm(
+ " nihh %1,0xff7f\n" /* clear RCP_PCL_BIT */
+ " stg %1,%0\n"
+ : "=Q" (ptep[PTRS_PER_PTE])
+ : "d" (pgste_val(pgste)), "Q" (ptep[PTRS_PER_PTE]) : "cc");
preempt_enable();
#endif
}
-/* forward declaration for SetPageUptodate in page-flags.h*/
-static inline void page_clear_dirty(struct page *page, int mapped);
-#include <linux/page-flags.h>
-
-static inline void ptep_rcp_copy(pte_t *ptep)
+static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste)
{
#ifdef CONFIG_PGSTE
- struct page *page = virt_to_page(pte_val(*ptep));
- unsigned int skey;
- unsigned long *pgste = (unsigned long *) (ptep + PTRS_PER_PTE);
-
- skey = page_get_storage_key(page_to_phys(page));
- if (skey & _PAGE_CHANGED) {
- set_bit_simple(RCP_GC_BIT, pgste);
- set_bit_simple(KVM_UD_BIT, pgste);
+ unsigned long pfn, bits;
+ unsigned char skey;
+
+ pfn = pte_val(*ptep) >> PAGE_SHIFT;
+ skey = page_get_storage_key(pfn);
+ bits = skey & (_PAGE_CHANGED | _PAGE_REFERENCED);
+ /* Clear page changed & referenced bit in the storage key */
+ if (bits) {
+ skey ^= bits;
+ page_set_storage_key(pfn, skey, 1);
}
- if (skey & _PAGE_REFERENCED)
- set_bit_simple(RCP_GR_BIT, pgste);
- if (test_and_clear_bit_simple(RCP_HC_BIT, pgste)) {
- SetPageDirty(page);
- set_bit_simple(KVM_UD_BIT, pgste);
- }
- if (test_and_clear_bit_simple(RCP_HR_BIT, pgste))
- SetPageReferenced(page);
+ /* Transfer page changed & referenced bit to guest bits in pgste */
+ pgste_val(pgste) |= bits << 48; /* RCP_GR_BIT & RCP_GC_BIT */
+ /* Get host changed & referenced bits from pgste */
+ bits |= (pgste_val(pgste) & (RCP_HR_BIT | RCP_HC_BIT)) >> 52;
+ /* Clear host bits in pgste. */
+ pgste_val(pgste) &= ~(RCP_HR_BIT | RCP_HC_BIT);
+ pgste_val(pgste) &= ~(RCP_ACC_BITS | RCP_FP_BIT);
+ /* Copy page access key and fetch protection bit to pgste */
+ pgste_val(pgste) |=
+ (unsigned long) (skey & (_PAGE_ACC_BITS | _PAGE_FP_BIT)) << 56;
+ /* Transfer changed and referenced to kvm user bits */
+ pgste_val(pgste) |= bits << 45; /* KVM_UR_BIT & KVM_UC_BIT */
+ /* Transfer changed & referenced to pte sofware bits */
+ pte_val(*ptep) |= bits << 1; /* _PAGE_SWR & _PAGE_SWC */
#endif
+ return pgste;
+
+}
+
+static inline pgste_t pgste_update_young(pte_t *ptep, pgste_t pgste)
+{
+#ifdef CONFIG_PGSTE
+ int young;
+
+ young = page_reset_referenced(pte_val(*ptep) & PAGE_MASK);
+ /* Transfer page referenced bit to pte software bit (host view) */
+ if (young || (pgste_val(pgste) & RCP_HR_BIT))
+ pte_val(*ptep) |= _PAGE_SWR;
+ /* Clear host referenced bit in pgste. */
+ pgste_val(pgste) &= ~RCP_HR_BIT;
+ /* Transfer page referenced bit to guest bit in pgste */
+ pgste_val(pgste) |= (unsigned long) young << 50; /* set RCP_GR_BIT */
+#endif
+ return pgste;
+
+}
+
+static inline void pgste_set_pte(pte_t *ptep, pgste_t pgste)
+{
+#ifdef CONFIG_PGSTE
+ unsigned long pfn;
+ unsigned long okey, nkey;
+
+ pfn = pte_val(*ptep) >> PAGE_SHIFT;
+ okey = nkey = page_get_storage_key(pfn);
+ nkey &= ~(_PAGE_ACC_BITS | _PAGE_FP_BIT);
+ /* Set page access key and fetch protection bit from pgste */
+ nkey |= (pgste_val(pgste) & (RCP_ACC_BITS | RCP_FP_BIT)) >> 56;
+ if (okey != nkey)
+ page_set_storage_key(pfn, nkey, 1);
+#endif
+}
+
+/*
+ * Certain architectures need to do special things when PTEs
+ * within a page table are directly modified. Thus, the following
+ * hook is made available.
+ */
+static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t entry)
+{
+ pgste_t pgste;
+
+ if (mm_has_pgste(mm)) {
+ pgste = pgste_get_lock(ptep);
+ pgste_set_pte(ptep, pgste);
+ *ptep = entry;
+ pgste_set_unlock(ptep, pgste);
+ } else
+ *ptep = entry;
}
/*
@@ -627,19 +671,19 @@ static inline int pte_write(pte_t pte)
static inline int pte_dirty(pte_t pte)
{
- /* A pte is neither clean nor dirty on s/390. The dirty bit
- * is in the storage key. See page_test_and_clear_dirty for
- * details.
- */
+#ifdef CONFIG_PGSTE
+ if (pte_val(pte) & _PAGE_SWC)
+ return 1;
+#endif
return 0;
}
static inline int pte_young(pte_t pte)
{
- /* A pte is neither young nor old on s/390. The young bit
- * is in the storage key. See page_test_and_clear_young for
- * details.
- */
+#ifdef CONFIG_PGSTE
+ if (pte_val(pte) & _PAGE_SWR)
+ return 1;
+#endif
return 0;
}
@@ -647,64 +691,30 @@ static inline int pte_young(pte_t pte)
* pgd/pmd/pte modification functions
*/
-#ifndef __s390x__
-
-#define pgd_clear(pgd) do { } while (0)
-#define pud_clear(pud) do { } while (0)
-
-#else /* __s390x__ */
-
-static inline void pgd_clear_kernel(pgd_t * pgd)
+static inline void pgd_clear(pgd_t *pgd)
{
+#ifdef __s390x__
if ((pgd_val(*pgd) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R2)
pgd_val(*pgd) = _REGION2_ENTRY_EMPTY;
+#endif
}
-static inline void pgd_clear(pgd_t * pgd)
-{
- pgd_t *shadow = get_shadow_table(pgd);
-
- pgd_clear_kernel(pgd);
- if (shadow)
- pgd_clear_kernel(shadow);
-}
-
-static inline void pud_clear_kernel(pud_t *pud)
+static inline void pud_clear(pud_t *pud)
{
+#ifdef __s390x__
if ((pud_val(*pud) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3)
pud_val(*pud) = _REGION3_ENTRY_EMPTY;
+#endif
}
-static inline void pud_clear(pud_t *pud)
-{
- pud_t *shadow = get_shadow_table(pud);
-
- pud_clear_kernel(pud);
- if (shadow)
- pud_clear_kernel(shadow);
-}
-
-#endif /* __s390x__ */
-
-static inline void pmd_clear_kernel(pmd_t * pmdp)
+static inline void pmd_clear(pmd_t *pmdp)
{
pmd_val(*pmdp) = _SEGMENT_ENTRY_EMPTY;
}
-static inline void pmd_clear(pmd_t *pmd)
-{
- pmd_t *shadow = get_shadow_table(pmd);
-
- pmd_clear_kernel(pmd);
- if (shadow)
- pmd_clear_kernel(shadow);
-}
-
static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
pte_val(*ptep) = _PAGE_TYPE_EMPTY;
- if (mm->context.noexec)
- pte_val(ptep[PTRS_PER_PTE]) = _PAGE_TYPE_EMPTY;
}
/*
@@ -734,35 +744,27 @@ static inline pte_t pte_mkwrite(pte_t pte)
static inline pte_t pte_mkclean(pte_t pte)
{
- /* The only user of pte_mkclean is the fork() code.
- We must *not* clear the *physical* page dirty bit
- just because fork() wants to clear the dirty bit in
- *one* of the page's mappings. So we just do nothing. */
+#ifdef CONFIG_PGSTE
+ pte_val(pte) &= ~_PAGE_SWC;
+#endif
return pte;
}
static inline pte_t pte_mkdirty(pte_t pte)
{
- /* We do not explicitly set the dirty bit because the
- * sske instruction is slow. It is faster to let the
- * next instruction set the dirty bit.
- */
return pte;
}
static inline pte_t pte_mkold(pte_t pte)
{
- /* S/390 doesn't keep its dirty/referenced bit in the pte.
- * There is no point in clearing the real referenced bit.
- */
+#ifdef CONFIG_PGSTE
+ pte_val(pte) &= ~_PAGE_SWR;
+#endif
return pte;
}
static inline pte_t pte_mkyoung(pte_t pte)
{
- /* S/390 doesn't keep its dirty/referenced bit in the pte.
- * There is no point in setting the real referenced bit.
- */
return pte;
}
@@ -800,62 +802,60 @@ static inline pte_t pte_mkhuge(pte_t pte)
}
#endif
-#ifdef CONFIG_PGSTE
/*
- * Get (and clear) the user dirty bit for a PTE.
+ * Get (and clear) the user dirty bit for a pte.
*/
-static inline int kvm_s390_test_and_clear_page_dirty(struct mm_struct *mm,
- pte_t *ptep)
+static inline int ptep_test_and_clear_user_dirty(struct mm_struct *mm,
+ pte_t *ptep)
{
- int dirty;
- unsigned long *pgste;
- struct page *page;
- unsigned int skey;
-
- if (!mm->context.has_pgste)
- return -EINVAL;
- rcp_lock(ptep);
- pgste = (unsigned long *) (ptep + PTRS_PER_PTE);
- page = virt_to_page(pte_val(*ptep));
- skey = page_get_storage_key(page_to_phys(page));
- if (skey & _PAGE_CHANGED) {
- set_bit_simple(RCP_GC_BIT, pgste);
- set_bit_simple(KVM_UD_BIT, pgste);
+ pgste_t pgste;
+ int dirty = 0;
+
+ if (mm_has_pgste(mm)) {
+ pgste = pgste_get_lock(ptep);
+ pgste = pgste_update_all(ptep, pgste);
+ dirty = !!(pgste_val(pgste) & KVM_UC_BIT);
+ pgste_val(pgste) &= ~KVM_UC_BIT;
+ pgste_set_unlock(ptep, pgste);
+ return dirty;
}
- if (test_and_clear_bit_simple(RCP_HC_BIT, pgste)) {
- SetPageDirty(page);
- set_bit_simple(KVM_UD_BIT, pgste);
- }
- dirty = test_and_clear_bit_simple(KVM_UD_BIT, pgste);
- if (skey & _PAGE_CHANGED)
- page_clear_dirty(page, 1);
- rcp_unlock(ptep);
return dirty;
}
-#endif
+
+/*
+ * Get (and clear) the user referenced bit for a pte.
+ */
+static inline int ptep_test_and_clear_user_young(struct mm_struct *mm,
+ pte_t *ptep)
+{
+ pgste_t pgste;
+ int young = 0;
+
+ if (mm_has_pgste(mm)) {
+ pgste = pgste_get_lock(ptep);
+ pgste = pgste_update_young(ptep, pgste);
+ young = !!(pgste_val(pgste) & KVM_UR_BIT);
+ pgste_val(pgste) &= ~KVM_UR_BIT;
+ pgste_set_unlock(ptep, pgste);
+ }
+ return young;
+}
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep)
{
-#ifdef CONFIG_PGSTE
- unsigned long physpage;
- int young;
- unsigned long *pgste;
+ pgste_t pgste;
+ pte_t pte;
- if (!vma->vm_mm->context.has_pgste)
- return 0;
- physpage = pte_val(*ptep) & PAGE_MASK;
- pgste = (unsigned long *) (ptep + PTRS_PER_PTE);
-
- young = ((page_get_storage_key(physpage) & _PAGE_REFERENCED) != 0);
- rcp_lock(ptep);
- if (young)
- set_bit_simple(RCP_GR_BIT, pgste);
- young |= test_and_clear_bit_simple(RCP_HR_BIT, pgste);
- rcp_unlock(ptep);
- return young;
-#endif
+ if (mm_has_pgste(vma->vm_mm)) {
+ pgste = pgste_get_lock(ptep);
+ pgste = pgste_update_young(ptep, pgste);
+ pte = *ptep;
+ *ptep = pte_mkold(pte);
+ pgste_set_unlock(ptep, pgste);
+ return pte_young(pte);
+ }
return 0;
}
@@ -867,10 +867,7 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
* On s390 reference bits are in storage key and never in TLB
* With virtualization we handle the reference bit, without we
* we can simply return */
-#ifdef CONFIG_PGSTE
return ptep_test_and_clear_young(vma, address, ptep);
-#endif
- return 0;
}
static inline void __ptep_ipte(unsigned long address, pte_t *ptep)
@@ -890,25 +887,6 @@ static inline void __ptep_ipte(unsigned long address, pte_t *ptep)
}
}
-static inline void ptep_invalidate(struct mm_struct *mm,
- unsigned long address, pte_t *ptep)
-{
- if (mm->context.has_pgste) {
- rcp_lock(ptep);
- __ptep_ipte(address, ptep);
- ptep_rcp_copy(ptep);
- pte_val(*ptep) = _PAGE_TYPE_EMPTY;
- rcp_unlock(ptep);
- return;
- }
- __ptep_ipte(address, ptep);
- pte_val(*ptep) = _PAGE_TYPE_EMPTY;
- if (mm->context.noexec) {
- __ptep_ipte(address, ptep + PTRS_PER_PTE);
- pte_val(*(ptep + PTRS_PER_PTE)) = _PAGE_TYPE_EMPTY;
- }
-}
-
/*
* This is hard to understand. ptep_get_and_clear and ptep_clear_flush
* both clear the TLB for the unmapped pte. The reason is that
@@ -923,24 +901,72 @@ static inline void ptep_invalidate(struct mm_struct *mm,
* is a nop.
*/
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define ptep_get_and_clear(__mm, __address, __ptep) \
-({ \
- pte_t __pte = *(__ptep); \
- (__mm)->context.flush_mm = 1; \
- if (atomic_read(&(__mm)->context.attach_count) > 1 || \
- (__mm) != current->active_mm) \
- ptep_invalidate(__mm, __address, __ptep); \
- else \
- pte_clear((__mm), (__address), (__ptep)); \
- __pte; \
-})
+static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
+ unsigned long address, pte_t *ptep)
+{
+ pgste_t pgste;
+ pte_t pte;
+
+ mm->context.flush_mm = 1;
+ if (mm_has_pgste(mm))
+ pgste = pgste_get_lock(ptep);
+
+ pte = *ptep;
+ if (!mm_exclusive(mm))
+ __ptep_ipte(address, ptep);
+ pte_val(*ptep) = _PAGE_TYPE_EMPTY;
+
+ if (mm_has_pgste(mm)) {
+ pgste = pgste_update_all(&pte, pgste);
+ pgste_set_unlock(ptep, pgste);
+ }
+ return pte;
+}
+
+#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
+static inline pte_t ptep_modify_prot_start(struct mm_struct *mm,
+ unsigned long address,
+ pte_t *ptep)
+{
+ pte_t pte;
+
+ mm->context.flush_mm = 1;
+ if (mm_has_pgste(mm))
+ pgste_get_lock(ptep);
+
+ pte = *ptep;
+ if (!mm_exclusive(mm))
+ __ptep_ipte(address, ptep);
+ return pte;
+}
+
+static inline void ptep_modify_prot_commit(struct mm_struct *mm,
+ unsigned long address,
+ pte_t *ptep, pte_t pte)
+{
+ *ptep = pte;
+ if (mm_has_pgste(mm))
+ pgste_set_unlock(ptep, *(pgste_t *)(ptep + PTRS_PER_PTE));
+}
#define __HAVE_ARCH_PTEP_CLEAR_FLUSH
static inline pte_t ptep_clear_flush(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
- pte_t pte = *ptep;
- ptep_invalidate(vma->vm_mm, address, ptep);
+ pgste_t pgste;
+ pte_t pte;
+
+ if (mm_has_pgste(vma->vm_mm))
+ pgste = pgste_get_lock(ptep);
+
+ pte = *ptep;
+ __ptep_ipte(address, ptep);
+ pte_val(*ptep) = _PAGE_TYPE_EMPTY;
+
+ if (mm_has_pgste(vma->vm_mm)) {
+ pgste = pgste_update_all(&pte, pgste);
+ pgste_set_unlock(ptep, pgste);
+ }
return pte;
}
@@ -953,76 +979,67 @@ static inline pte_t ptep_clear_flush(struct vm_area_struct *vma,
*/
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm,
- unsigned long addr,
+ unsigned long address,
pte_t *ptep, int full)
{
- pte_t pte = *ptep;
+ pgste_t pgste;
+ pte_t pte;
+
+ if (mm_has_pgste(mm))
+ pgste = pgste_get_lock(ptep);
+
+ pte = *ptep;
+ if (!full)
+ __ptep_ipte(address, ptep);
+ pte_val(*ptep) = _PAGE_TYPE_EMPTY;
- if (full)
- pte_clear(mm, addr, ptep);
- else
- ptep_invalidate(mm, addr, ptep);
+ if (mm_has_pgste(mm)) {
+ pgste = pgste_update_all(&pte, pgste);
+ pgste_set_unlock(ptep, pgste);
+ }
return pte;
}
#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-#define ptep_set_wrprotect(__mm, __addr, __ptep) \
-({ \
- pte_t __pte = *(__ptep); \
- if (pte_write(__pte)) { \
- (__mm)->context.flush_mm = 1; \
- if (atomic_read(&(__mm)->context.attach_count) > 1 || \
- (__mm) != current->active_mm) \
- ptep_invalidate(__mm, __addr, __ptep); \
- set_pte_at(__mm, __addr, __ptep, pte_wrprotect(__pte)); \
- } \
-})
+static inline pte_t ptep_set_wrprotect(struct mm_struct *mm,
+ unsigned long address, pte_t *ptep)
+{
+ pgste_t pgste;
+ pte_t pte = *ptep;
-#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-#define ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty) \
-({ \
- int __changed = !pte_same(*(__ptep), __entry); \
- if (__changed) { \
- ptep_invalidate((__vma)->vm_mm, __addr, __ptep); \
- set_pte_at((__vma)->vm_mm, __addr, __ptep, __entry); \
- } \
- __changed; \
-})
+ if (pte_write(pte)) {
+ mm->context.flush_mm = 1;
+ if (mm_has_pgste(mm))
+ pgste = pgste_get_lock(ptep);
-/*
- * Test and clear dirty bit in storage key.
- * We can't clear the changed bit atomically. This is a potential
- * race against modification of the referenced bit. This function
- * should therefore only be called if it is not mapped in any
- * address space.
- */
-#define __HAVE_ARCH_PAGE_TEST_DIRTY
-static inline int page_test_dirty(struct page *page)
-{
- return (page_get_storage_key(page_to_phys(page)) & _PAGE_CHANGED) != 0;
-}
+ if (!mm_exclusive(mm))
+ __ptep_ipte(address, ptep);
+ *ptep = pte_wrprotect(pte);
-#define __HAVE_ARCH_PAGE_CLEAR_DIRTY
-static inline void page_clear_dirty(struct page *page, int mapped)
-{
- page_set_storage_key(page_to_phys(page), PAGE_DEFAULT_KEY, mapped);
+ if (mm_has_pgste(mm))
+ pgste_set_unlock(ptep, pgste);
+ }
+ return pte;
}
-/*
- * Test and clear referenced bit in storage key.
- */
-#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
-static inline int page_test_and_clear_young(struct page *page)
+#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
+static inline int ptep_set_access_flags(struct vm_area_struct *vma,
+ unsigned long address, pte_t *ptep,
+ pte_t entry, int dirty)
{
- unsigned long physpage = page_to_phys(page);
- int ccode;
-
- asm volatile(
- " rrbe 0,%1\n"
- " ipm %0\n"
- " srl %0,28\n"
- : "=d" (ccode) : "a" (physpage) : "cc" );
- return ccode & 2;
+ pgste_t pgste;
+
+ if (pte_same(*ptep, entry))
+ return 0;
+ if (mm_has_pgste(vma->vm_mm))
+ pgste = pgste_get_lock(ptep);
+
+ __ptep_ipte(address, ptep);
+ *ptep = entry;
+
+ if (mm_has_pgste(vma->vm_mm))
+ pgste_set_unlock(ptep, pgste);
+ return 1;
}
/*
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 2c79b6416271..1300c3025334 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -84,6 +84,7 @@ struct thread_struct {
struct per_event per_event; /* Cause of the last PER trap */
/* pfault_wait is used to block the process on a pfault event */
unsigned long pfault_wait;
+ struct list_head list;
};
typedef struct thread_struct thread_struct;
diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h
index 29d5d6d4becc..b7a4f2eb0057 100644
--- a/arch/s390/include/asm/tlbflush.h
+++ b/arch/s390/include/asm/tlbflush.h
@@ -50,7 +50,7 @@ static inline void __tlb_flush_full(struct mm_struct *mm)
/*
* If the process only ran on the local cpu, do a local flush.
*/
- local_cpumask = cpumask_of_cpu(smp_processor_id());
+ cpumask_copy(&local_cpumask, cpumask_of(smp_processor_id()));
if (cpumask_equal(mm_cpumask(mm), &local_cpumask))
__tlb_flush_local();
else
@@ -80,16 +80,11 @@ static inline void __tlb_flush_mm(struct mm_struct * mm)
* on all cpus instead of doing a local flush if the mm
* only ran on the local cpu.
*/
- if (MACHINE_HAS_IDTE) {
- if (mm->context.noexec)
- __tlb_flush_idte((unsigned long)
- get_shadow_table(mm->pgd) |
- mm->context.asce_bits);
+ if (MACHINE_HAS_IDTE)
__tlb_flush_idte((unsigned long) mm->pgd |
mm->context.asce_bits);
- return;
- }
- __tlb_flush_full(mm);
+ else
+ __tlb_flush_full(mm);
}
static inline void __tlb_flush_mm_cond(struct mm_struct * mm)
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index e82152572377..9208e69245a0 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -385,6 +385,7 @@
/* Ignore system calls that are also reachable via sys_socket */
#define __IGNORE_recvmmsg
+#define __IGNORE_sendmmsg
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index fe03c140002a..edfbd17d7082 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -124,13 +124,11 @@ int main(void)
DEFINE(__LC_LAST_UPDATE_TIMER, offsetof(struct _lowcore, last_update_timer));
DEFINE(__LC_LAST_UPDATE_CLOCK, offsetof(struct _lowcore, last_update_clock));
DEFINE(__LC_CURRENT, offsetof(struct _lowcore, current_task));
+ DEFINE(__LC_CURRENT_PID, offsetof(struct _lowcore, current_pid));
DEFINE(__LC_THREAD_INFO, offsetof(struct _lowcore, thread_info));
DEFINE(__LC_KERNEL_STACK, offsetof(struct _lowcore, kernel_stack));
DEFINE(__LC_ASYNC_STACK, offsetof(struct _lowcore, async_stack));
DEFINE(__LC_PANIC_STACK, offsetof(struct _lowcore, panic_stack));
- DEFINE(__LC_KERNEL_ASCE, offsetof(struct _lowcore, kernel_asce));
- DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce));
- DEFINE(__LC_USER_EXEC_ASCE, offsetof(struct _lowcore, user_exec_asce));
DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock));
DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock));
DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags));
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 1b67fc6ebdc2..0476174dfff5 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -212,6 +212,7 @@ __switch_to:
lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
st %r3,__LC_CURRENT # store task struct of next
+ mvc __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next
st %r5,__LC_THREAD_INFO # store thread info of next
ahi %r5,STACK_SIZE # end of kernel stack of next
st %r5,__LC_KERNEL_STACK # store end of kernel stack
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 9fd864563499..d61967e2eab0 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -220,6 +220,7 @@ __switch_to:
lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
stg %r3,__LC_CURRENT # store task struct of next
+ mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next
stg %r5,__LC_THREAD_INFO # store thread info of next
aghi %r5,STACK_SIZE # end of kernel stack of next
stg %r5,__LC_KERNEL_STACK # store end of kernel stack
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index ea5099c9709c..e204f9597aaf 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -32,6 +32,7 @@ static const struct irq_class intrclass_names[] = {
{.name = "VRT", .desc = "[EXT] Virtio" },
{.name = "SCP", .desc = "[EXT] Service Call" },
{.name = "IUC", .desc = "[EXT] IUCV" },
+ {.name = "CPM", .desc = "[EXT] CPU Measurement" },
{.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt" },
{.name = "QDI", .desc = "[I/O] QDIO Interrupt" },
{.name = "DAS", .desc = "[I/O] DASD" },
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index a895e69379f7..541a7509faeb 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -9,41 +9,26 @@
#include <linux/compiler.h>
#include <linux/cpu.h>
-#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
-#include <linux/fs.h>
#include <linux/smp.h>
-#include <linux/stddef.h>
#include <linux/slab.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/vmalloc.h>
-#include <linux/user.h>
#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/notifier.h>
#include <linux/tick.h>
-#include <linux/elfcore.h>
-#include <linux/kernel_stat.h>
#include <linux/personality.h>
#include <linux/syscalls.h>
#include <linux/compat.h>
#include <linux/kprobes.h>
#include <linux/random.h>
-#include <asm/compat.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
+#include <linux/module.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/irq.h>
#include <asm/timer.h>
#include <asm/nmi.h>
+#include <asm/compat.h>
#include <asm/smp.h>
#include "entry.h"
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index f5434d1ecb31..0c35dee10b00 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -305,8 +305,7 @@ static int set_amode_and_uaccess(unsigned long user_amode,
*/
static int __init early_parse_switch_amode(char *p)
{
- if (user_mode != SECONDARY_SPACE_MODE)
- user_mode = PRIMARY_SPACE_MODE;
+ user_mode = PRIMARY_SPACE_MODE;
return 0;
}
early_param("switch_amode", early_parse_switch_amode);
@@ -315,10 +314,6 @@ static int __init early_parse_user_mode(char *p)
{
if (p && strcmp(p, "primary") == 0)
user_mode = PRIMARY_SPACE_MODE;
-#ifdef CONFIG_S390_EXEC_PROTECT
- else if (p && strcmp(p, "secondary") == 0)
- user_mode = SECONDARY_SPACE_MODE;
-#endif
else if (!p || strcmp(p, "home") == 0)
user_mode = HOME_SPACE_MODE;
else
@@ -327,31 +322,9 @@ static int __init early_parse_user_mode(char *p)
}
early_param("user_mode", early_parse_user_mode);
-#ifdef CONFIG_S390_EXEC_PROTECT
-/*
- * Enable execute protection?
- */
-static int __init early_parse_noexec(char *p)
-{
- if (!strncmp(p, "off", 3))
- return 0;
- user_mode = SECONDARY_SPACE_MODE;
- return 0;
-}
-early_param("noexec", early_parse_noexec);
-#endif /* CONFIG_S390_EXEC_PROTECT */
-
static void setup_addressing_mode(void)
{
- if (user_mode == SECONDARY_SPACE_MODE) {
- if (set_amode_and_uaccess(PSW_ASC_SECONDARY,
- PSW32_ASC_SECONDARY))
- pr_info("Execute protection active, "
- "mvcos available\n");
- else
- pr_info("Execute protection active, "
- "mvcos not available\n");
- } else if (user_mode == PRIMARY_SPACE_MODE) {
+ if (user_mode == PRIMARY_SPACE_MODE) {
if (set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY))
pr_info("Address spaces switched, "
"mvcos available\n");
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 63c7d9ff220d..f8e85ecbc459 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -335,7 +335,7 @@ static int smp_rescan_cpus_sigp(cpumask_t avail)
smp_cpu_polarization[logical_cpu] = POLARIZATION_UNKNWN;
if (!cpu_stopped(logical_cpu))
continue;
- cpu_set(logical_cpu, cpu_present_map);
+ set_cpu_present(logical_cpu, true);
smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED;
logical_cpu = cpumask_next(logical_cpu, &avail);
if (logical_cpu >= nr_cpu_ids)
@@ -367,7 +367,7 @@ static int smp_rescan_cpus_sclp(cpumask_t avail)
continue;
__cpu_logical_map[logical_cpu] = cpu_id;
smp_cpu_polarization[logical_cpu] = POLARIZATION_UNKNWN;
- cpu_set(logical_cpu, cpu_present_map);
+ set_cpu_present(logical_cpu, true);
if (cpu >= info->configured)
smp_cpu_state[logical_cpu] = CPU_STATE_STANDBY;
else
@@ -385,7 +385,7 @@ static int __smp_rescan_cpus(void)
{
cpumask_t avail;
- cpus_xor(avail, cpu_possible_map, cpu_present_map);
+ cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
if (smp_use_sigp_detection)
return smp_rescan_cpus_sigp(avail);
else
@@ -467,7 +467,7 @@ int __cpuinit start_secondary(void *cpuvoid)
notify_cpu_starting(smp_processor_id());
/* Mark this cpu as online */
ipi_call_lock();
- cpu_set(smp_processor_id(), cpu_online_map);
+ set_cpu_online(smp_processor_id(), true);
ipi_call_unlock();
/* Switch on interrupts */
local_irq_enable();
@@ -644,7 +644,7 @@ int __cpu_disable(void)
struct ec_creg_mask_parms cr_parms;
int cpu = smp_processor_id();
- cpu_clear(cpu, cpu_online_map);
+ set_cpu_online(cpu, false);
/* Disable pfault pseudo page faults on this cpu. */
pfault_fini();
@@ -654,8 +654,8 @@ int __cpu_disable(void)
/* disable all external interrupts */
cr_parms.orvals[0] = 0;
- cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 12 |
- 1 << 11 | 1 << 10 | 1 << 6 | 1 << 4);
+ cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 11 |
+ 1 << 10 | 1 << 9 | 1 << 6 | 1 << 4);
/* disable all I/O interrupts */
cr_parms.orvals[6] = 0;
cr_parms.andvals[6] = ~(1 << 31 | 1 << 30 | 1 << 29 | 1 << 28 |
@@ -681,7 +681,7 @@ void __cpu_die(unsigned int cpu)
atomic_dec(&init_mm.context.attach_count);
}
-void cpu_die(void)
+void __noreturn cpu_die(void)
{
idle_task_exit();
while (sigp(smp_processor_id(), sigp_stop) == sigp_busy)
@@ -738,8 +738,8 @@ void __init smp_prepare_boot_cpu(void)
BUG_ON(smp_processor_id() != 0);
current_thread_info()->cpu = 0;
- cpu_set(0, cpu_present_map);
- cpu_set(0, cpu_online_map);
+ set_cpu_present(0, true);
+ set_cpu_online(0, true);
S390_lowcore.percpu_offset = __per_cpu_offset[0];
current_set[0] = current;
smp_cpu_state[0] = CPU_STATE_CONFIGURED;
@@ -1016,21 +1016,21 @@ int __ref smp_rescan_cpus(void)
get_online_cpus();
mutex_lock(&smp_cpu_state_mutex);
- newcpus = cpu_present_map;
+ cpumask_copy(&newcpus, cpu_present_mask);
rc = __smp_rescan_cpus();
if (rc)
goto out;
- cpus_andnot(newcpus, cpu_present_map, newcpus);
- for_each_cpu_mask(cpu, newcpus) {
+ cpumask_andnot(&newcpus, cpu_present_mask, &newcpus);
+ for_each_cpu(cpu, &newcpus) {
rc = smp_add_present_cpu(cpu);
if (rc)
- cpu_clear(cpu, cpu_present_map);
+ set_cpu_present(cpu, false);
}
rc = 0;
out:
mutex_unlock(&smp_cpu_state_mutex);
put_online_cpus();
- if (!cpus_empty(newcpus))
+ if (!cpumask_empty(&newcpus))
topology_schedule_update();
return rc;
}
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 87be655557aa..a59557f1fb5f 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -810,7 +810,7 @@ static int etr_sync_clock_stop(struct etr_aib *aib, int port)
etr_sync.etr_port = port;
get_online_cpus();
atomic_set(&etr_sync.cpus, num_online_cpus() - 1);
- rc = stop_machine(etr_sync_clock, &etr_sync, &cpu_online_map);
+ rc = stop_machine(etr_sync_clock, &etr_sync, cpu_online_mask);
put_online_cpus();
return rc;
}
@@ -1579,7 +1579,7 @@ static void stp_work_fn(struct work_struct *work)
memset(&stp_sync, 0, sizeof(stp_sync));
get_online_cpus();
atomic_set(&stp_sync.cpus, num_online_cpus() - 1);
- stop_machine(stp_sync_clock, &stp_sync, &cpu_online_map);
+ stop_machine(stp_sync_clock, &stp_sync, cpu_online_mask);
put_online_cpus();
if (!check_sync_clock())
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 94b06c31fc8a..2eafb8c7a746 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -52,20 +52,20 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
{
cpumask_t mask;
- cpus_clear(mask);
+ cpumask_clear(&mask);
if (!topology_enabled || !MACHINE_HAS_TOPOLOGY) {
cpumask_copy(&mask, cpumask_of(cpu));
return mask;
}
while (info) {
- if (cpu_isset(cpu, info->mask)) {
+ if (cpumask_test_cpu(cpu, &info->mask)) {
mask = info->mask;
break;
}
info = info->next;
}
- if (cpus_empty(mask))
- mask = cpumask_of_cpu(cpu);
+ if (cpumask_empty(&mask))
+ cpumask_copy(&mask, cpumask_of(cpu));
return mask;
}
@@ -85,10 +85,10 @@ static void add_cpus_to_mask(struct topology_cpu *tl_cpu,
if (cpu_logical_map(lcpu) != rcpu)
continue;
#ifdef CONFIG_SCHED_BOOK
- cpu_set(lcpu, book->mask);
+ cpumask_set_cpu(lcpu, &book->mask);
cpu_book_id[lcpu] = book->id;
#endif
- cpu_set(lcpu, core->mask);
+ cpumask_set_cpu(lcpu, &core->mask);
cpu_core_id[lcpu] = core->id;
smp_cpu_polarization[lcpu] = tl_cpu->pp;
}
@@ -101,13 +101,13 @@ static void clear_masks(void)
info = &core_info;
while (info) {
- cpus_clear(info->mask);
+ cpumask_clear(&info->mask);
info = info->next;
}
#ifdef CONFIG_SCHED_BOOK
info = &book_info;
while (info) {
- cpus_clear(info->mask);
+ cpumask_clear(&info->mask);
info = info->next;
}
#endif
diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile
index d13e8755a8cc..8ad2b34ad151 100644
--- a/arch/s390/kernel/vdso32/Makefile
+++ b/arch/s390/kernel/vdso32/Makefile
@@ -22,6 +22,9 @@ obj-y += vdso32_wrapper.o
extra-y += vdso32.lds
CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
+# Disable gcov profiling for VDSO code
+GCOV_PROFILE := n
+
# Force dependency (incbin is bad)
$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile
index 449352dda9cd..2a8ddfd12a5b 100644
--- a/arch/s390/kernel/vdso64/Makefile
+++ b/arch/s390/kernel/vdso64/Makefile
@@ -22,6 +22,9 @@ obj-y += vdso64_wrapper.o
extra-y += vdso64.lds
CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
+# Disable gcov profiling for VDSO code
+GCOV_PROFILE := n
+
# Force dependency (incbin is bad)
$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c
index 3cc95dd0a3a6..075ddada4911 100644
--- a/arch/s390/mm/extmem.c
+++ b/arch/s390/mm/extmem.c
@@ -412,6 +412,7 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long
struct dcss_segment *seg;
int rc, diag_cc;
+ start_addr = end_addr = 0;
seg = kmalloc(sizeof(*seg), GFP_KERNEL | GFP_DMA);
if (seg == NULL) {
rc = -ENOMEM;
@@ -573,6 +574,7 @@ segment_modify_shared (char *name, int do_nonshared)
unsigned long start_addr, end_addr, dummy;
int rc, diag_cc;
+ start_addr = end_addr = 0;
mutex_lock(&dcss_lock);
seg = segment_by_name (name);
if (seg == NULL) {
@@ -681,8 +683,6 @@ void
segment_save(char *name)
{
struct dcss_segment *seg;
- int startpfn = 0;
- int endpfn = 0;
char cmd1[160];
char cmd2[80];
int i, response;
@@ -698,8 +698,6 @@ segment_save(char *name)
goto out;
}
- startpfn = seg->start_addr >> PAGE_SHIFT;
- endpfn = (seg->end) >> PAGE_SHIFT;
sprintf(cmd1, "DEFSEG %s", name);
for (i=0; i<seg->segcnt; i++) {
sprintf(cmd1+strlen(cmd1), " %lX-%lX %s",
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index ab988135e5c6..a0f9e730f26a 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -225,33 +225,6 @@ static noinline void do_sigbus(struct pt_regs *regs, long int_code,
force_sig_info(SIGBUS, &si, tsk);
}
-#ifdef CONFIG_S390_EXEC_PROTECT
-static noinline int signal_return(struct pt_regs *regs, long int_code,
- unsigned long trans_exc_code)
-{
- u16 instruction;
- int rc;
-
- rc = __get_user(instruction, (u16 __user *) regs->psw.addr);
-
- if (!rc && instruction == 0x0a77) {
- clear_tsk_thread_flag(current, TIF_PER_TRAP);
- if (is_compat_task())
- sys32_sigreturn();
- else
- sys_sigreturn();
- } else if (!rc && instruction == 0x0aad) {
- clear_tsk_thread_flag(current, TIF_PER_TRAP);
- if (is_compat_task())
- sys32_rt_sigreturn();
- else
- sys_rt_sigreturn();
- } else
- do_sigsegv(regs, int_code, SEGV_MAPERR, trans_exc_code);
- return 0;
-}
-#endif /* CONFIG_S390_EXEC_PROTECT */
-
static noinline void do_fault_error(struct pt_regs *regs, long int_code,
unsigned long trans_exc_code, int fault)
{
@@ -259,13 +232,6 @@ static noinline void do_fault_error(struct pt_regs *regs, long int_code,
switch (fault) {
case VM_FAULT_BADACCESS:
-#ifdef CONFIG_S390_EXEC_PROTECT
- if ((regs->psw.mask & PSW_MASK_ASC) == PSW_ASC_SECONDARY &&
- (trans_exc_code & 3) == 0) {
- signal_return(regs, int_code, trans_exc_code);
- break;
- }
-#endif /* CONFIG_S390_EXEC_PROTECT */
case VM_FAULT_BADMAP:
/* Bad memory access. Check if it is kernel or user space. */
if (regs->psw.mask & PSW_MASK_PSTATE) {
@@ -414,11 +380,6 @@ void __kprobes do_dat_exception(struct pt_regs *regs, long pgm_int_code,
int access, fault;
access = VM_READ | VM_EXEC | VM_WRITE;
-#ifdef CONFIG_S390_EXEC_PROTECT
- if ((regs->psw.mask & PSW_MASK_ASC) == PSW_ASC_SECONDARY &&
- (trans_exc_code & 3) == 0)
- access = VM_EXEC;
-#endif
fault = do_exception(regs, access, trans_exc_code);
if (unlikely(fault))
do_fault_error(regs, pgm_int_code & 255, trans_exc_code, fault);
@@ -491,22 +452,28 @@ static int __init nopfault(char *str)
__setup("nopfault", nopfault);
-typedef struct {
- __u16 refdiagc;
- __u16 reffcode;
- __u16 refdwlen;
- __u16 refversn;
- __u64 refgaddr;
- __u64 refselmk;
- __u64 refcmpmk;
- __u64 reserved;
-} __attribute__ ((packed, aligned(8))) pfault_refbk_t;
+struct pfault_refbk {
+ u16 refdiagc;
+ u16 reffcode;
+ u16 refdwlen;
+ u16 refversn;
+ u64 refgaddr;
+ u64 refselmk;
+ u64 refcmpmk;
+ u64 reserved;
+} __attribute__ ((packed, aligned(8)));
int pfault_init(void)
{
- pfault_refbk_t refbk =
- { 0x258, 0, 5, 2, __LC_CURRENT, 1ULL << 48, 1ULL << 48,
- __PF_RES_FIELD };
+ struct pfault_refbk refbk = {
+ .refdiagc = 0x258,
+ .reffcode = 0,
+ .refdwlen = 5,
+ .refversn = 2,
+ .refgaddr = __LC_CURRENT_PID,
+ .refselmk = 1ULL << 48,
+ .refcmpmk = 1ULL << 48,
+ .reserved = __PF_RES_FIELD };
int rc;
if (!MACHINE_IS_VM || pfault_disable)
@@ -524,8 +491,12 @@ int pfault_init(void)
void pfault_fini(void)
{
- pfault_refbk_t refbk =
- { 0x258, 1, 5, 2, 0ULL, 0ULL, 0ULL, 0ULL };
+ struct pfault_refbk refbk = {
+ .refdiagc = 0x258,
+ .reffcode = 1,
+ .refdwlen = 5,
+ .refversn = 2,
+ };
if (!MACHINE_IS_VM || pfault_disable)
return;
@@ -537,11 +508,15 @@ void pfault_fini(void)
: : "a" (&refbk), "m" (refbk) : "cc");
}
+static DEFINE_SPINLOCK(pfault_lock);
+static LIST_HEAD(pfault_list);
+
static void pfault_interrupt(unsigned int ext_int_code,
unsigned int param32, unsigned long param64)
{
struct task_struct *tsk;
__u16 subcode;
+ pid_t pid;
/*
* Get the external interruption subcode & pfault
@@ -553,44 +528,79 @@ static void pfault_interrupt(unsigned int ext_int_code,
if ((subcode & 0xff00) != __SUBCODE_MASK)
return;
kstat_cpu(smp_processor_id()).irqs[EXTINT_PFL]++;
-
- /*
- * Get the token (= address of the task structure of the affected task).
- */
-#ifdef CONFIG_64BIT
- tsk = (struct task_struct *) param64;
-#else
- tsk = (struct task_struct *) param32;
-#endif
-
+ if (subcode & 0x0080) {
+ /* Get the token (= pid of the affected task). */
+ pid = sizeof(void *) == 4 ? param32 : param64;
+ rcu_read_lock();
+ tsk = find_task_by_pid_ns(pid, &init_pid_ns);
+ if (tsk)
+ get_task_struct(tsk);
+ rcu_read_unlock();
+ if (!tsk)
+ return;
+ } else {
+ tsk = current;
+ }
+ spin_lock(&pfault_lock);
if (subcode & 0x0080) {
/* signal bit is set -> a page has been swapped in by VM */
- if (xchg(&tsk->thread.pfault_wait, -1) != 0) {
+ if (tsk->thread.pfault_wait == 1) {
/* Initial interrupt was faster than the completion
* interrupt. pfault_wait is valid. Set pfault_wait
* back to zero and wake up the process. This can
* safely be done because the task is still sleeping
* and can't produce new pfaults. */
tsk->thread.pfault_wait = 0;
+ list_del(&tsk->thread.list);
wake_up_process(tsk);
- put_task_struct(tsk);
+ } else {
+ /* Completion interrupt was faster than initial
+ * interrupt. Set pfault_wait to -1 so the initial
+ * interrupt doesn't put the task to sleep. */
+ tsk->thread.pfault_wait = -1;
}
+ put_task_struct(tsk);
} else {
/* signal bit not set -> a real page is missing. */
- get_task_struct(tsk);
- set_task_state(tsk, TASK_UNINTERRUPTIBLE);
- if (xchg(&tsk->thread.pfault_wait, 1) != 0) {
+ if (tsk->thread.pfault_wait == -1) {
/* Completion interrupt was faster than the initial
- * interrupt (swapped in a -1 for pfault_wait). Set
- * pfault_wait back to zero and exit. This can be
- * done safely because tsk is running in kernel
- * mode and can't produce new pfaults. */
+ * interrupt (pfault_wait == -1). Set pfault_wait
+ * back to zero and exit. */
tsk->thread.pfault_wait = 0;
- set_task_state(tsk, TASK_RUNNING);
- put_task_struct(tsk);
- } else
+ } else {
+ /* Initial interrupt arrived before completion
+ * interrupt. Let the task sleep. */
+ tsk->thread.pfault_wait = 1;
+ list_add(&tsk->thread.list, &pfault_list);
+ set_task_state(tsk, TASK_UNINTERRUPTIBLE);
set_tsk_need_resched(tsk);
+ }
+ }
+ spin_unlock(&pfault_lock);
+}
+
+static int __cpuinit pfault_cpu_notify(struct notifier_block *self,
+ unsigned long action, void *hcpu)
+{
+ struct thread_struct *thread, *next;
+ struct task_struct *tsk;
+
+ switch (action) {
+ case CPU_DEAD:
+ case CPU_DEAD_FROZEN:
+ spin_lock_irq(&pfault_lock);
+ list_for_each_entry_safe(thread, next, &pfault_list, list) {
+ thread->pfault_wait = 0;
+ list_del(&thread->list);
+ tsk = container_of(thread, struct task_struct, thread);
+ wake_up_process(tsk);
+ }
+ spin_unlock_irq(&pfault_lock);
+ break;
+ default:
+ break;
}
+ return NOTIFY_OK;
}
static int __init pfault_irq_init(void)
@@ -599,22 +609,21 @@ static int __init pfault_irq_init(void)
if (!MACHINE_IS_VM)
return 0;
- /*
- * Try to get pfault pseudo page faults going.
- */
rc = register_external_interrupt(0x2603, pfault_interrupt);
- if (rc) {
- pfault_disable = 1;
- return rc;
- }
- if (pfault_init() == 0)
- return 0;
+ if (rc)
+ goto out_extint;
+ rc = pfault_init() == 0 ? 0 : -EOPNOTSUPP;
+ if (rc)
+ goto out_pfault;
+ hotcpu_notifier(pfault_cpu_notify, 0);
+ return 0;
- /* Tough luck, no pfault. */
- pfault_disable = 1;
+out_pfault:
unregister_external_interrupt(0x2603, pfault_interrupt);
- return 0;
+out_extint:
+ pfault_disable = 1;
+ return rc;
}
early_initcall(pfault_irq_init);
-#endif
+#endif /* CONFIG_PFAULT */
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index 639cd21f2218..a4d856db9154 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -13,7 +13,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *pteptr, pte_t pteval)
{
pmd_t *pmdp = (pmd_t *) pteptr;
- pte_t shadow_pteval = pteval;
unsigned long mask;
if (!MACHINE_HAS_HPAGE) {
@@ -21,18 +20,9 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
mask = pte_val(pteval) &
(_SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO);
pte_val(pteval) = (_SEGMENT_ENTRY + __pa(pteptr)) | mask;
- if (mm->context.noexec) {
- pteptr += PTRS_PER_PTE;
- pte_val(shadow_pteval) =
- (_SEGMENT_ENTRY + __pa(pteptr)) | mask;
- }
}
pmd_val(*pmdp) = pte_val(pteval);
- if (mm->context.noexec) {
- pmdp = get_shadow_table(pmdp);
- pmd_val(*pmdp) = pte_val(shadow_pteval);
- }
}
int arch_prepare_hugepage(struct page *page)
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index bb409332a484..dfefc2171691 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -175,7 +175,8 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
pmd = pmd_offset(pud, address);
pte = pte_offset_kernel(pmd, address);
if (!enable) {
- ptep_invalidate(&init_mm, address, pte);
+ __ptep_ipte(address, pte);
+ pte_val(*pte) = _PAGE_TYPE_EMPTY;
continue;
}
*pte = mk_pte_phys(address, __pgprot(_PAGE_TYPE_RW));
diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c
index f05edcc3beff..d013ed39743b 100644
--- a/arch/s390/mm/pageattr.c
+++ b/arch/s390/mm/pageattr.c
@@ -28,7 +28,7 @@ static void change_page_attr(unsigned long addr, int numpages,
pte = *ptep;
pte = set(pte);
- ptep_invalidate(&init_mm, addr, ptep);
+ __ptep_ipte(addr, ptep);
*ptep = pte;
addr += PAGE_SIZE;
}
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index e1850c28cd68..8d4330642512 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -40,7 +40,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
static DEFINE_PER_CPU(struct rcu_table_freelist *, rcu_table_freelist);
static void __page_table_free(struct mm_struct *mm, unsigned long *table);
-static void __crst_table_free(struct mm_struct *mm, unsigned long *table);
static struct rcu_table_freelist *rcu_table_freelist_get(struct mm_struct *mm)
{
@@ -67,7 +66,7 @@ static void rcu_table_freelist_callback(struct rcu_head *head)
while (batch->pgt_index > 0)
__page_table_free(batch->mm, batch->table[--batch->pgt_index]);
while (batch->crst_index < RCU_FREELIST_SIZE)
- __crst_table_free(batch->mm, batch->table[batch->crst_index++]);
+ crst_table_free(batch->mm, batch->table[batch->crst_index++]);
free_page((unsigned long) batch);
}
@@ -125,63 +124,33 @@ static int __init parse_vmalloc(char *arg)
}
early_param("vmalloc", parse_vmalloc);
-unsigned long *crst_table_alloc(struct mm_struct *mm, int noexec)
+unsigned long *crst_table_alloc(struct mm_struct *mm)
{
struct page *page = alloc_pages(GFP_KERNEL, ALLOC_ORDER);
if (!page)
return NULL;
- page->index = 0;
- if (noexec) {
- struct page *shadow = alloc_pages(GFP_KERNEL, ALLOC_ORDER);
- if (!shadow) {
- __free_pages(page, ALLOC_ORDER);
- return NULL;
- }
- page->index = page_to_phys(shadow);
- }
- spin_lock_bh(&mm->context.list_lock);
- list_add(&page->lru, &mm->context.crst_list);
- spin_unlock_bh(&mm->context.list_lock);
return (unsigned long *) page_to_phys(page);
}
-static void __crst_table_free(struct mm_struct *mm, unsigned long *table)
-{
- unsigned long *shadow = get_shadow_table(table);
-
- if (shadow)
- free_pages((unsigned long) shadow, ALLOC_ORDER);
- free_pages((unsigned long) table, ALLOC_ORDER);
-}
-
void crst_table_free(struct mm_struct *mm, unsigned long *table)
{
- struct page *page = virt_to_page(table);
-
- spin_lock_bh(&mm->context.list_lock);
- list_del(&page->lru);
- spin_unlock_bh(&mm->context.list_lock);
- __crst_table_free(mm, table);
+ free_pages((unsigned long) table, ALLOC_ORDER);
}
void crst_table_free_rcu(struct mm_struct *mm, unsigned long *table)
{
struct rcu_table_freelist *batch;
- struct page *page = virt_to_page(table);
- spin_lock_bh(&mm->context.list_lock);
- list_del(&page->lru);
- spin_unlock_bh(&mm->context.list_lock);
if (atomic_read(&mm->mm_users) < 2 &&
cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) {
- __crst_table_free(mm, table);
+ crst_table_free(mm, table);
return;
}
batch = rcu_table_freelist_get(mm);
if (!batch) {
smp_call_function(smp_sync, NULL, 1);
- __crst_table_free(mm, table);
+ crst_table_free(mm, table);
return;
}
batch->table[--batch->crst_index] = table;
@@ -197,7 +166,7 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long limit)
BUG_ON(limit > (1UL << 53));
repeat:
- table = crst_table_alloc(mm, mm->context.noexec);
+ table = crst_table_alloc(mm);
if (!table)
return -ENOMEM;
spin_lock_bh(&mm->page_table_lock);
@@ -273,7 +242,7 @@ unsigned long *page_table_alloc(struct mm_struct *mm)
unsigned long *table;
unsigned long bits;
- bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL;
+ bits = (mm->context.has_pgste) ? 3UL : 1UL;
spin_lock_bh(&mm->context.list_lock);
page = NULL;
if (!list_empty(&mm->context.pgtable_list)) {
@@ -329,7 +298,7 @@ void page_table_free(struct mm_struct *mm, unsigned long *table)
struct page *page;
unsigned long bits;
- bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL;
+ bits = (mm->context.has_pgste) ? 3UL : 1UL;
bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long);
page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
spin_lock_bh(&mm->context.list_lock);
@@ -366,7 +335,7 @@ void page_table_free_rcu(struct mm_struct *mm, unsigned long *table)
page_table_free(mm, table);
return;
}
- bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL;
+ bits = (mm->context.has_pgste) ? 3UL : 1UL;
bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long);
page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
spin_lock_bh(&mm->context.list_lock);
@@ -379,25 +348,6 @@ void page_table_free_rcu(struct mm_struct *mm, unsigned long *table)
rcu_table_freelist_finish();
}
-void disable_noexec(struct mm_struct *mm, struct task_struct *tsk)
-{
- struct page *page;
-
- spin_lock_bh(&mm->context.list_lock);
- /* Free shadow region and segment tables. */
- list_for_each_entry(page, &mm->context.crst_list, lru)
- if (page->index) {
- free_pages((unsigned long) page->index, ALLOC_ORDER);
- page->index = 0;
- }
- /* "Free" second halves of page tables. */
- list_for_each_entry(page, &mm->context.pgtable_list, lru)
- page->flags &= ~SECOND_HALVES;
- spin_unlock_bh(&mm->context.list_lock);
- mm->context.noexec = 0;
- update_mm(mm, tsk);
-}
-
/*
* switch on pgstes for its userspace process (for kvm)
*/
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 34c43f23b28c..8c1970d1dd91 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -95,7 +95,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pu_dir = vmem_pud_alloc();
if (!pu_dir)
goto out;
- pgd_populate_kernel(&init_mm, pg_dir, pu_dir);
+ pgd_populate(&init_mm, pg_dir, pu_dir);
}
pu_dir = pud_offset(pg_dir, address);
@@ -103,7 +103,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pm_dir = vmem_pmd_alloc();
if (!pm_dir)
goto out;
- pud_populate_kernel(&init_mm, pu_dir, pm_dir);
+ pud_populate(&init_mm, pu_dir, pm_dir);
}
pte = mk_pte_phys(address, __pgprot(ro ? _PAGE_RO : 0));
@@ -123,7 +123,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pt_dir = vmem_pte_alloc();
if (!pt_dir)
goto out;
- pmd_populate_kernel(&init_mm, pm_dir, pt_dir);
+ pmd_populate(&init_mm, pm_dir, pt_dir);
}
pt_dir = pte_offset_kernel(pm_dir, address);
@@ -159,7 +159,7 @@ static void vmem_remove_range(unsigned long start, unsigned long size)
continue;
if (pmd_huge(*pm_dir)) {
- pmd_clear_kernel(pm_dir);
+ pmd_clear(pm_dir);
address += HPAGE_SIZE - PAGE_SIZE;
continue;
}
@@ -192,7 +192,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
pu_dir = vmem_pud_alloc();
if (!pu_dir)
goto out;
- pgd_populate_kernel(&init_mm, pg_dir, pu_dir);
+ pgd_populate(&init_mm, pg_dir, pu_dir);
}
pu_dir = pud_offset(pg_dir, address);
@@ -200,7 +200,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
pm_dir = vmem_pmd_alloc();
if (!pm_dir)
goto out;
- pud_populate_kernel(&init_mm, pu_dir, pm_dir);
+ pud_populate(&init_mm, pu_dir, pm_dir);
}
pm_dir = pmd_offset(pu_dir, address);
@@ -208,7 +208,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
pt_dir = vmem_pte_alloc();
if (!pt_dir)
goto out;
- pmd_populate_kernel(&init_mm, pm_dir, pt_dir);
+ pmd_populate(&init_mm, pm_dir, pt_dir);
}
pt_dir = pte_offset_kernel(pm_dir, address);
diff --git a/arch/s390/oprofile/hwsampler.c b/arch/s390/oprofile/hwsampler.c
index 33cbd373cce4..053caa0fd276 100644
--- a/arch/s390/oprofile/hwsampler.c
+++ b/arch/s390/oprofile/hwsampler.c
@@ -5,6 +5,7 @@
* Author: Heinz Graalfs <graalfs@de.ibm.com>
*/
+#include <linux/kernel_stat.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/smp.h>
@@ -674,17 +675,11 @@ int hwsampler_activate(unsigned int cpu)
static void hws_ext_handler(unsigned int ext_int_code,
unsigned int param32, unsigned long param64)
{
- int cpu;
struct hws_cpu_buffer *cb;
- cpu = smp_processor_id();
- cb = &per_cpu(sampler_cpu_buffer, cpu);
-
- atomic_xchg(
- &cb->ext_params,
- atomic_read(&cb->ext_params)
- | S390_lowcore.ext_params);
-
+ kstat_cpu(smp_processor_id()).irqs[EXTINT_CPM]++;
+ cb = &__get_cpu_var(sampler_cpu_buffer);
+ atomic_xchg(&cb->ext_params, atomic_read(&cb->ext_params) | param32);
if (hws_wq)
queue_work(hws_wq, &cb->worker);
}
@@ -764,7 +759,7 @@ static int worker_check_error(unsigned int cpu, int ext_params)
if (!sdbt || !*sdbt)
return -EINVAL;
- if (ext_params & EI_IEA)
+ if (ext_params & EI_PRA)
cb->req_alert++;
if (ext_params & EI_LSDA)
@@ -1009,7 +1004,7 @@ int hwsampler_deallocate()
if (hws_state != HWS_STOPPED)
goto deallocate_exit;
- smp_ctl_clear_bit(0, 5); /* set bit 58 CR0 off */
+ ctl_clear_bit(0, 5); /* set bit 58 CR0 off */
deallocate_sdbt();
hws_state = HWS_DEALLOCATED;
@@ -1123,7 +1118,7 @@ int hwsampler_shutdown()
mutex_lock(&hws_sem);
if (hws_state == HWS_STOPPED) {
- smp_ctl_clear_bit(0, 5); /* set bit 58 CR0 off */
+ ctl_clear_bit(0, 5); /* set bit 58 CR0 off */
deallocate_sdbt();
}
if (hws_wq) {
@@ -1198,7 +1193,7 @@ start_all_exit:
hws_oom = 1;
hws_flush_all = 0;
/* now let them in, 1407 CPUMF external interrupts */
- smp_ctl_set_bit(0, 5); /* set CR0 bit 58 */
+ ctl_set_bit(0, 5); /* set CR0 bit 58 */
return 0;
}
OpenPOWER on IntegriCloud