summaryrefslogtreecommitdiff
path: root/arch/s390/include/asm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/include/asm')
-rw-r--r--arch/s390/include/asm/atomic.h7
-rw-r--r--arch/s390/include/asm/bitops.h5
-rw-r--r--arch/s390/include/asm/ipl.h1
-rw-r--r--arch/s390/include/asm/irqflags.h16
-rw-r--r--arch/s390/include/asm/kvm_host.h12
-rw-r--r--arch/s390/include/asm/linkage.h5
-rw-r--r--arch/s390/include/asm/lowcore.h13
-rw-r--r--arch/s390/include/asm/mmu.h4
-rw-r--r--arch/s390/include/asm/pgalloc.h15
-rw-r--r--arch/s390/include/asm/pgtable.h81
-rw-r--r--arch/s390/include/asm/processor.h3
-rw-r--r--arch/s390/include/asm/ptrace.h1
-rw-r--r--arch/s390/include/asm/qdio.h119
-rw-r--r--arch/s390/include/asm/system.h1
-rw-r--r--arch/s390/include/asm/thread_info.h2
-rw-r--r--arch/s390/include/asm/tlb.h94
-rw-r--r--arch/s390/include/asm/tlbflush.h2
17 files changed, 189 insertions, 192 deletions
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index d9db13810d15..8517d2ae3b5c 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -93,7 +93,7 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
return old;
}
-static inline int atomic_add_unless(atomic_t *v, int a, int u)
+static inline int __atomic_add_unless(atomic_t *v, int a, int u)
{
int c, old;
c = atomic_read(v);
@@ -105,10 +105,9 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
break;
c = old;
}
- return c != u;
+ return c;
}
-#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#undef __CS_LOOP
@@ -332,6 +331,4 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v)
#define smp_mb__before_atomic_inc() smp_mb()
#define smp_mb__after_atomic_inc() smp_mb()
-#include <asm-generic/atomic-long.h>
-
#endif /* __ARCH_S390_ATOMIC__ */
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 667c6e9f6a34..e5beb490959b 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -832,10 +832,7 @@ static inline int find_next_bit_le(void *vaddr, unsigned long size,
#include <asm-generic/bitops/le.h>
-#define ext2_set_bit_atomic(lock, nr, addr) \
- test_and_set_bit_le(nr, addr)
-#define ext2_clear_bit_atomic(lock, nr, addr) \
- test_and_clear_bit_le(nr, addr)
+#include <asm-generic/bitops/ext2-atomic-setbit.h>
#endif /* __KERNEL__ */
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
index 5e95d95450b3..97cc4403fabf 100644
--- a/arch/s390/include/asm/ipl.h
+++ b/arch/s390/include/asm/ipl.h
@@ -167,5 +167,6 @@ enum diag308_rc {
};
extern int diag308(unsigned long subcode, void *addr);
+extern void diag308_reset(void);
#endif /* _ASM_S390_IPL_H */
diff --git a/arch/s390/include/asm/irqflags.h b/arch/s390/include/asm/irqflags.h
index 865d6d891ace..38fdf451febb 100644
--- a/arch/s390/include/asm/irqflags.h
+++ b/arch/s390/include/asm/irqflags.h
@@ -29,42 +29,42 @@
})
/* set system mask. */
-static inline void __arch_local_irq_ssm(unsigned long flags)
+static inline notrace void __arch_local_irq_ssm(unsigned long flags)
{
asm volatile("ssm %0" : : "Q" (flags) : "memory");
}
-static inline unsigned long arch_local_save_flags(void)
+static inline notrace unsigned long arch_local_save_flags(void)
{
return __arch_local_irq_stosm(0x00);
}
-static inline unsigned long arch_local_irq_save(void)
+static inline notrace unsigned long arch_local_irq_save(void)
{
return __arch_local_irq_stnsm(0xfc);
}
-static inline void arch_local_irq_disable(void)
+static inline notrace void arch_local_irq_disable(void)
{
arch_local_irq_save();
}
-static inline void arch_local_irq_enable(void)
+static inline notrace void arch_local_irq_enable(void)
{
__arch_local_irq_stosm(0x03);
}
-static inline void arch_local_irq_restore(unsigned long flags)
+static inline notrace void arch_local_irq_restore(unsigned long flags)
{
__arch_local_irq_ssm(flags);
}
-static inline bool arch_irqs_disabled_flags(unsigned long flags)
+static inline notrace bool arch_irqs_disabled_flags(unsigned long flags)
{
return !(flags & (3UL << (BITS_PER_LONG - 8)));
}
-static inline bool arch_irqs_disabled(void)
+static inline notrace bool arch_irqs_disabled(void)
{
return arch_irqs_disabled_flags(arch_local_save_flags());
}
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index cef7dbf69dfc..00ff00dfb24c 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -93,9 +93,7 @@ struct kvm_s390_sie_block {
__u32 scaol; /* 0x0064 */
__u8 reserved68[4]; /* 0x0068 */
__u32 todpr; /* 0x006c */
- __u8 reserved70[16]; /* 0x0070 */
- __u64 gmsor; /* 0x0080 */
- __u64 gmslm; /* 0x0088 */
+ __u8 reserved70[32]; /* 0x0070 */
psw_t gpsw; /* 0x0090 */
__u64 gg14; /* 0x00a0 */
__u64 gg15; /* 0x00a8 */
@@ -138,6 +136,7 @@ struct kvm_vcpu_stat {
u32 instruction_chsc;
u32 instruction_stsi;
u32 instruction_stfl;
+ u32 instruction_tprot;
u32 instruction_sigp_sense;
u32 instruction_sigp_emergency;
u32 instruction_sigp_stop;
@@ -175,6 +174,10 @@ struct kvm_s390_prefix_info {
__u32 address;
};
+struct kvm_s390_emerg_info {
+ __u16 code;
+};
+
struct kvm_s390_interrupt_info {
struct list_head list;
u64 type;
@@ -182,6 +185,7 @@ struct kvm_s390_interrupt_info {
struct kvm_s390_io_info io;
struct kvm_s390_ext_info ext;
struct kvm_s390_pgm_info pgm;
+ struct kvm_s390_emerg_info emerg;
struct kvm_s390_prefix_info prefix;
};
};
@@ -226,6 +230,7 @@ struct kvm_vcpu_arch {
struct cpuid cpu_id;
u64 stidp_data;
};
+ struct gmap *gmap;
};
struct kvm_vm_stat {
@@ -236,6 +241,7 @@ struct kvm_arch{
struct sca_block *sca;
debug_info_t *dbf;
struct kvm_s390_float_interrupt float_int;
+ struct gmap *gmap;
};
extern int sie64a(struct kvm_s390_sie_block *, unsigned long *);
diff --git a/arch/s390/include/asm/linkage.h b/arch/s390/include/asm/linkage.h
index 291c2d01c44f..fc8a8284778e 100644
--- a/arch/s390/include/asm/linkage.h
+++ b/arch/s390/include/asm/linkage.h
@@ -1,6 +1,9 @@
#ifndef __ASM_LINKAGE_H
#define __ASM_LINKAGE_H
-/* Nothing to see here... */
+#include <linux/stringify.h>
+
+#define __ALIGN .align 4, 0x07
+#define __ALIGN_STR __stringify(__ALIGN)
#endif
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 228cf0b295db..e85c911aabf0 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -18,6 +18,7 @@ void system_call(void);
void pgm_check_handler(void);
void mcck_int_handler(void);
void io_int_handler(void);
+void psw_restart_int_handler(void);
#ifdef CONFIG_32BIT
@@ -150,7 +151,10 @@ struct _lowcore {
*/
__u32 ipib; /* 0x0e00 */
__u32 ipib_checksum; /* 0x0e04 */
- __u8 pad_0x0e08[0x0f00-0x0e08]; /* 0x0e08 */
+
+ /* 64 bit save area */
+ __u64 save_area_64; /* 0x0e08 */
+ __u8 pad_0x0e10[0x0f00-0x0e10]; /* 0x0e10 */
/* Extended facility list */
__u64 stfle_fac_list[32]; /* 0x0f00 */
@@ -268,7 +272,7 @@ struct _lowcore {
__u64 vdso_per_cpu_data; /* 0x0358 */
__u64 machine_flags; /* 0x0360 */
__u64 ftrace_func; /* 0x0368 */
- __u64 sie_hook; /* 0x0370 */
+ __u64 gmap; /* 0x0370 */
__u64 cmf_hpp; /* 0x0378 */
/* Interrupt response block. */
@@ -286,7 +290,10 @@ struct _lowcore {
*/
__u64 ipib; /* 0x0e00 */
__u32 ipib_checksum; /* 0x0e08 */
- __u8 pad_0x0e0c[0x0f00-0x0e0c]; /* 0x0e0c */
+
+ /* 64 bit save area */
+ __u64 save_area_64; /* 0x0e0c */
+ __u8 pad_0x0e14[0x0f00-0x0e14]; /* 0x0e14 */
/* Extended facility list */
__u64 stfle_fac_list[32]; /* 0x0f00 */
diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h
index 82d0847896a0..4506791adcd5 100644
--- a/arch/s390/include/asm/mmu.h
+++ b/arch/s390/include/asm/mmu.h
@@ -6,6 +6,7 @@ typedef struct {
unsigned int flush_mm;
spinlock_t list_lock;
struct list_head pgtable_list;
+ struct list_head gmap_list;
unsigned long asce_bits;
unsigned long asce_limit;
unsigned long vdso_base;
@@ -17,6 +18,7 @@ typedef struct {
#define INIT_MM_CONTEXT(name) \
.context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \
- .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list),
+ .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \
+ .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list),
#endif
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index f6314af3b354..8eef9b5b3cf4 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -17,15 +17,15 @@
#include <linux/gfp.h>
#include <linux/mm.h>
-#define check_pgt_cache() do {} while (0)
-
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 *);
+unsigned long *page_table_alloc(struct mm_struct *, unsigned long);
void page_table_free(struct mm_struct *, unsigned long *);
-void page_table_free_rcu(struct mm_struct *, unsigned long *);
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+void page_table_free_rcu(struct mmu_gather *, unsigned long *);
+void __tlb_remove_table(void *_table);
+#endif
static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
{
@@ -115,6 +115,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
spin_lock_init(&mm->context.list_lock);
INIT_LIST_HEAD(&mm->context.pgtable_list);
+ INIT_LIST_HEAD(&mm->context.gmap_list);
return (pgd_t *) crst_table_alloc(mm);
}
#define pgd_free(mm, pgd) crst_table_free(mm, (unsigned long *) pgd)
@@ -133,8 +134,8 @@ static inline void pmd_populate(struct mm_struct *mm,
/*
* page table entry allocation/free routines.
*/
-#define pte_alloc_one_kernel(mm, vmaddr) ((pte_t *) page_table_alloc(mm))
-#define pte_alloc_one(mm, vmaddr) ((pte_t *) page_table_alloc(mm))
+#define pte_alloc_one_kernel(mm, vmaddr) ((pte_t *) page_table_alloc(mm, vmaddr))
+#define pte_alloc_one(mm, vmaddr) ((pte_t *) page_table_alloc(mm, vmaddr))
#define pte_free_kernel(mm, pte) page_table_free(mm, (unsigned long *) pte)
#define pte_free(mm, pte) page_table_free(mm, (unsigned long *) pte)
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index e4efacfe1b63..519eb5f187ef 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -293,19 +293,6 @@ extern unsigned long VMALLOC_START;
* swap pte is 1011 and 0001, 0011, 0101, 0111 are invalid.
*/
-/* Page status table bits for virtualization */
-#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__
/* Bits in the segment table address-space-control-element */
@@ -325,6 +312,19 @@ extern unsigned long VMALLOC_START;
#define _SEGMENT_ENTRY (_SEGMENT_ENTRY_PTL)
#define _SEGMENT_ENTRY_EMPTY (_SEGMENT_ENTRY_INV)
+/* Page status table bits for virtualization */
+#define RCP_ACC_BITS 0xf0000000UL
+#define RCP_FP_BIT 0x08000000UL
+#define RCP_PCL_BIT 0x00800000UL
+#define RCP_HR_BIT 0x00400000UL
+#define RCP_HC_BIT 0x00200000UL
+#define RCP_GR_BIT 0x00040000UL
+#define RCP_GC_BIT 0x00020000UL
+
+/* User dirty / referenced bit for KVM's migration feature */
+#define KVM_UR_BIT 0x00008000UL
+#define KVM_UC_BIT 0x00004000UL
+
#else /* __s390x__ */
/* Bits in the segment/region table address-space-control-element */
@@ -367,6 +367,19 @@ extern unsigned long VMALLOC_START;
#define _SEGMENT_ENTRY_LARGE 0x400 /* STE-format control, large page */
#define _SEGMENT_ENTRY_CO 0x100 /* change-recording override */
+/* Page status table bits for virtualization */
+#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
+
#endif /* __s390x__ */
/*
@@ -641,6 +654,48 @@ static inline void pgste_set_pte(pte_t *ptep, pgste_t pgste)
#endif
}
+/**
+ * struct gmap_struct - guest address space
+ * @mm: pointer to the parent mm_struct
+ * @table: pointer to the page directory
+ * @crst_list: list of all crst tables used in the guest address space
+ */
+struct gmap {
+ struct list_head list;
+ struct mm_struct *mm;
+ unsigned long *table;
+ struct list_head crst_list;
+};
+
+/**
+ * struct gmap_rmap - reverse mapping for segment table entries
+ * @next: pointer to the next gmap_rmap structure in the list
+ * @entry: pointer to a segment table entry
+ */
+struct gmap_rmap {
+ struct list_head list;
+ unsigned long *entry;
+};
+
+/**
+ * struct gmap_pgtable - gmap information attached to a page table
+ * @vmaddr: address of the 1MB segment in the process virtual memory
+ * @mapper: list of segment table entries maping a page table
+ */
+struct gmap_pgtable {
+ unsigned long vmaddr;
+ struct list_head mapper;
+};
+
+struct gmap *gmap_alloc(struct mm_struct *mm);
+void gmap_free(struct gmap *gmap);
+void gmap_enable(struct gmap *gmap);
+void gmap_disable(struct gmap *gmap);
+int gmap_map_segment(struct gmap *gmap, unsigned long from,
+ unsigned long to, unsigned long length);
+int gmap_unmap_segment(struct gmap *gmap, unsigned long to, unsigned long len);
+unsigned long gmap_fault(unsigned long address, struct gmap *);
+
/*
* Certain architectures need to do special things when PTEs
* within a page table are directly modified. Thus, the following
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 1300c3025334..a4b6229e5d4b 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -80,6 +80,7 @@ struct thread_struct {
mm_segment_t mm_segment;
unsigned long prot_addr; /* address of protection-excep. */
unsigned int trap_no;
+ unsigned long gmap_addr; /* address of last gmap fault. */
struct per_regs per_user; /* User specified PER registers */
struct per_event per_event; /* Cause of the last PER trap */
/* pfault_wait is used to block the process on a pfault event */
@@ -118,14 +119,12 @@ struct stack_frame {
* Do necessary setup to start up a new thread.
*/
#define start_thread(regs, new_psw, new_stackp) do { \
- set_fs(USER_DS); \
regs->psw.mask = psw_user_bits; \
regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
regs->gprs[15] = new_stackp; \
} while (0)
#define start_thread31(regs, new_psw, new_stackp) do { \
- set_fs(USER_DS); \
regs->psw.mask = psw_user32_bits; \
regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
regs->gprs[15] = new_stackp; \
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 9ad628a8574a..62fd80c9e98c 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -539,7 +539,6 @@ struct user_regs_struct
* These are defined as per linux/ptrace.h, which see.
*/
#define arch_has_single_step() (1)
-extern void show_regs(struct pt_regs * regs);
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 350e7ee5952d..15c97625df8d 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -139,110 +139,47 @@ struct slib {
struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];
} __attribute__ ((packed, aligned(2048)));
-/**
- * struct sbal_flags - storage block address list flags
- * @last: last entry
- * @cont: contiguous storage
- * @frag: fragmentation
- */
-struct sbal_flags {
- u8 : 1;
- u8 last : 1;
- u8 cont : 1;
- u8 : 1;
- u8 frag : 2;
- u8 : 2;
-} __attribute__ ((packed));
-
-#define SBAL_FLAGS_FIRST_FRAG 0x04000000UL
-#define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL
-#define SBAL_FLAGS_LAST_FRAG 0x0c000000UL
-#define SBAL_FLAGS_LAST_ENTRY 0x40000000UL
-#define SBAL_FLAGS_CONTIGUOUS 0x20000000UL
+#define SBAL_EFLAGS_LAST_ENTRY 0x40
+#define SBAL_EFLAGS_CONTIGUOUS 0x20
+#define SBAL_EFLAGS_FIRST_FRAG 0x04
+#define SBAL_EFLAGS_MIDDLE_FRAG 0x08
+#define SBAL_EFLAGS_LAST_FRAG 0x0c
+#define SBAL_EFLAGS_MASK 0x6f
-#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
+#define SBAL_SFLAGS0_PCI_REQ 0x40
+#define SBAL_SFLAGS0_DATA_CONTINUATION 0x20
/* Awesome OpenFCP extensions */
-#define SBAL_FLAGS0_TYPE_STATUS 0x00UL
-#define SBAL_FLAGS0_TYPE_WRITE 0x08UL
-#define SBAL_FLAGS0_TYPE_READ 0x10UL
-#define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL
-#define SBAL_FLAGS0_MORE_SBALS 0x04UL
-#define SBAL_FLAGS0_COMMAND 0x02UL
-#define SBAL_FLAGS0_LAST_SBAL 0x00UL
-#define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND
-#define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS
-#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
-#define SBAL_FLAGS0_PCI 0x40
-
-/**
- * struct sbal_sbalf_0 - sbal flags for sbale 0
- * @pci: PCI indicator
- * @cont: data continuation
- * @sbtype: storage-block type (FCP)
- */
-struct sbal_sbalf_0 {
- u8 : 1;
- u8 pci : 1;
- u8 cont : 1;
- u8 sbtype : 2;
- u8 : 3;
-} __attribute__ ((packed));
-
-/**
- * struct sbal_sbalf_1 - sbal flags for sbale 1
- * @key: storage key
- */
-struct sbal_sbalf_1 {
- u8 : 4;
- u8 key : 4;
-} __attribute__ ((packed));
-
-/**
- * struct sbal_sbalf_14 - sbal flags for sbale 14
- * @erridx: error index
- */
-struct sbal_sbalf_14 {
- u8 : 4;
- u8 erridx : 4;
-} __attribute__ ((packed));
-
-/**
- * struct sbal_sbalf_15 - sbal flags for sbale 15
- * @reason: reason for error state
- */
-struct sbal_sbalf_15 {
- u8 reason;
-} __attribute__ ((packed));
-
-/**
- * union sbal_sbalf - storage block address list flags
- * @i0: sbalf0
- * @i1: sbalf1
- * @i14: sbalf14
- * @i15: sblaf15
- * @value: raw value
- */
-union sbal_sbalf {
- struct sbal_sbalf_0 i0;
- struct sbal_sbalf_1 i1;
- struct sbal_sbalf_14 i14;
- struct sbal_sbalf_15 i15;
- u8 value;
-};
+#define SBAL_SFLAGS0_TYPE_STATUS 0x00
+#define SBAL_SFLAGS0_TYPE_WRITE 0x08
+#define SBAL_SFLAGS0_TYPE_READ 0x10
+#define SBAL_SFLAGS0_TYPE_WRITE_READ 0x18
+#define SBAL_SFLAGS0_MORE_SBALS 0x04
+#define SBAL_SFLAGS0_COMMAND 0x02
+#define SBAL_SFLAGS0_LAST_SBAL 0x00
+#define SBAL_SFLAGS0_ONLY_SBAL SBAL_SFLAGS0_COMMAND
+#define SBAL_SFLAGS0_MIDDLE_SBAL SBAL_SFLAGS0_MORE_SBALS
+#define SBAL_SFLAGS0_FIRST_SBAL (SBAL_SFLAGS0_MORE_SBALS | SBAL_SFLAGS0_COMMAND)
/**
* struct qdio_buffer_element - SBAL entry
- * @flags: flags
+ * @eflags: SBAL entry flags
+ * @scount: SBAL count
+ * @sflags: whole SBAL flags
* @length: length
* @addr: address
*/
struct qdio_buffer_element {
- u32 flags;
+ u8 eflags;
+ /* private: */
+ u8 res1;
+ /* public: */
+ u8 scount;
+ u8 sflags;
u32 length;
#ifdef CONFIG_32BIT
/* private: */
- void *reserved;
+ void *res2;
/* public: */
#endif
void *addr;
diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h
index d382629a0172..6582f69f2389 100644
--- a/arch/s390/include/asm/system.h
+++ b/arch/s390/include/asm/system.h
@@ -113,6 +113,7 @@ extern void pfault_fini(void);
extern void cmma_init(void);
extern int memcpy_real(void *, void *, size_t);
+extern void copy_to_absolute_zero(void *dest, void *src, size_t count);
#define finish_arch_switch(prev) do { \
set_fs(current->thread.mm_segment); \
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index ad1382f7932e..1a5dbb6f1495 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -94,6 +94,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_SYSCALL_AUDIT 9 /* syscall auditing active */
#define TIF_SECCOMP 10 /* secure computing */
#define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */
+#define TIF_SIE 12 /* guest execution active */
#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling
TIF_NEED_RESCHED */
#define TIF_31BIT 17 /* 32bit process */
@@ -113,6 +114,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
+#define _TIF_SIE (1<<TIF_SIE)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_31BIT (1<<TIF_31BIT)
#define _TIF_SINGLE_STEP (1<<TIF_FREEZE)
diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h
index 77eee5477a52..c687a2c83462 100644
--- a/arch/s390/include/asm/tlb.h
+++ b/arch/s390/include/asm/tlb.h
@@ -26,67 +26,60 @@
#include <linux/swap.h>
#include <asm/processor.h>
#include <asm/pgalloc.h>
-#include <asm/smp.h>
#include <asm/tlbflush.h>
struct mmu_gather {
struct mm_struct *mm;
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+ struct mmu_table_batch *batch;
+#endif
unsigned int fullmm;
- unsigned int nr_ptes;
- unsigned int nr_pxds;
- unsigned int max;
- void **array;
- void *local[8];
+ unsigned int need_flush;
};
-static inline void __tlb_alloc_page(struct mmu_gather *tlb)
-{
- unsigned long addr = __get_free_pages(GFP_NOWAIT | __GFP_NOWARN, 0);
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+struct mmu_table_batch {
+ struct rcu_head rcu;
+ unsigned int nr;
+ void *tables[0];
+};
- if (addr) {
- tlb->array = (void *) addr;
- tlb->max = PAGE_SIZE / sizeof(void *);
- }
-}
+#define MAX_TABLE_BATCH \
+ ((PAGE_SIZE - sizeof(struct mmu_table_batch)) / sizeof(void *))
+
+extern void tlb_table_flush(struct mmu_gather *tlb);
+extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
+#endif
static inline void tlb_gather_mmu(struct mmu_gather *tlb,
struct mm_struct *mm,
unsigned int full_mm_flush)
{
tlb->mm = mm;
- tlb->max = ARRAY_SIZE(tlb->local);
- tlb->array = tlb->local;
tlb->fullmm = full_mm_flush;
+ tlb->need_flush = 0;
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+ tlb->batch = NULL;
+#endif
if (tlb->fullmm)
__tlb_flush_mm(mm);
- else
- __tlb_alloc_page(tlb);
- tlb->nr_ptes = 0;
- tlb->nr_pxds = tlb->max;
}
static inline void tlb_flush_mmu(struct mmu_gather *tlb)
{
- if (!tlb->fullmm && (tlb->nr_ptes > 0 || tlb->nr_pxds < tlb->max))
- __tlb_flush_mm(tlb->mm);
- while (tlb->nr_ptes > 0)
- page_table_free_rcu(tlb->mm, tlb->array[--tlb->nr_ptes]);
- while (tlb->nr_pxds < tlb->max)
- crst_table_free_rcu(tlb->mm, tlb->array[tlb->nr_pxds++]);
+ if (!tlb->need_flush)
+ return;
+ tlb->need_flush = 0;
+ __tlb_flush_mm(tlb->mm);
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+ tlb_table_flush(tlb);
+#endif
}
static inline void tlb_finish_mmu(struct mmu_gather *tlb,
unsigned long start, unsigned long end)
{
tlb_flush_mmu(tlb);
-
- rcu_table_freelist_finish();
-
- /* keep the page table cache within bounds */
- check_pgt_cache();
-
- if (tlb->array != tlb->local)
- free_pages((unsigned long) tlb->array, 0);
}
/*
@@ -112,12 +105,11 @@ static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
unsigned long address)
{
- if (!tlb->fullmm) {
- tlb->array[tlb->nr_ptes++] = pte;
- if (tlb->nr_ptes >= tlb->nr_pxds)
- tlb_flush_mmu(tlb);
- } else
- page_table_free(tlb->mm, (unsigned long *) pte);
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+ if (!tlb->fullmm)
+ return page_table_free_rcu(tlb, (unsigned long *) pte);
+#endif
+ page_table_free(tlb->mm, (unsigned long *) pte);
}
/*
@@ -133,12 +125,11 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
#ifdef __s390x__
if (tlb->mm->context.asce_limit <= (1UL << 31))
return;
- if (!tlb->fullmm) {
- tlb->array[--tlb->nr_pxds] = pmd;
- if (tlb->nr_ptes >= tlb->nr_pxds)
- tlb_flush_mmu(tlb);
- } else
- crst_table_free(tlb->mm, (unsigned long *) pmd);
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+ if (!tlb->fullmm)
+ return tlb_remove_table(tlb, pmd);
+#endif
+ crst_table_free(tlb->mm, (unsigned long *) pmd);
#endif
}
@@ -155,12 +146,11 @@ static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
#ifdef __s390x__
if (tlb->mm->context.asce_limit <= (1UL << 42))
return;
- if (!tlb->fullmm) {
- tlb->array[--tlb->nr_pxds] = pud;
- if (tlb->nr_ptes >= tlb->nr_pxds)
- tlb_flush_mmu(tlb);
- } else
- crst_table_free(tlb->mm, (unsigned long *) pud);
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+ if (!tlb->fullmm)
+ return tlb_remove_table(tlb, pud);
+#endif
+ crst_table_free(tlb->mm, (unsigned long *) pud);
#endif
}
diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h
index b7a4f2eb0057..304445382382 100644
--- a/arch/s390/include/asm/tlbflush.h
+++ b/arch/s390/include/asm/tlbflush.h
@@ -80,7 +80,7 @@ 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 (MACHINE_HAS_IDTE && list_empty(&mm->context.gmap_list))
__tlb_flush_idte((unsigned long) mm->pgd |
mm->context.asce_bits);
else