diff options
Diffstat (limited to 'arch/s390/include')
35 files changed, 635 insertions, 678 deletions
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h index 911064aa59b2..d28cc2f5b7b2 100644 --- a/arch/s390/include/asm/atomic.h +++ b/arch/s390/include/asm/atomic.h @@ -93,6 +93,11 @@ static inline int atomic_add_return(int i, atomic_t *v) return __ATOMIC_LOOP(v, i, __ATOMIC_ADD, __ATOMIC_BARRIER) + i; } +static inline int atomic_fetch_add(int i, atomic_t *v) +{ + return __ATOMIC_LOOP(v, i, __ATOMIC_ADD, __ATOMIC_BARRIER); +} + static inline void atomic_add(int i, atomic_t *v) { #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES @@ -114,22 +119,27 @@ static inline void atomic_add(int i, atomic_t *v) #define atomic_inc_and_test(_v) (atomic_add_return(1, _v) == 0) #define atomic_sub(_i, _v) atomic_add(-(int)(_i), _v) #define atomic_sub_return(_i, _v) atomic_add_return(-(int)(_i), _v) +#define atomic_fetch_sub(_i, _v) atomic_fetch_add(-(int)(_i), _v) #define atomic_sub_and_test(_i, _v) (atomic_sub_return(_i, _v) == 0) #define atomic_dec(_v) atomic_sub(1, _v) #define atomic_dec_return(_v) atomic_sub_return(1, _v) #define atomic_dec_and_test(_v) (atomic_sub_return(1, _v) == 0) -#define ATOMIC_OP(op, OP) \ +#define ATOMIC_OPS(op, OP) \ static inline void atomic_##op(int i, atomic_t *v) \ { \ __ATOMIC_LOOP(v, i, __ATOMIC_##OP, __ATOMIC_NO_BARRIER); \ +} \ +static inline int atomic_fetch_##op(int i, atomic_t *v) \ +{ \ + return __ATOMIC_LOOP(v, i, __ATOMIC_##OP, __ATOMIC_BARRIER); \ } -ATOMIC_OP(and, AND) -ATOMIC_OP(or, OR) -ATOMIC_OP(xor, XOR) +ATOMIC_OPS(and, AND) +ATOMIC_OPS(or, OR) +ATOMIC_OPS(xor, XOR) -#undef ATOMIC_OP +#undef ATOMIC_OPS #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) @@ -236,6 +246,11 @@ static inline long long atomic64_add_return(long long i, atomic64_t *v) return __ATOMIC64_LOOP(v, i, __ATOMIC64_ADD, __ATOMIC64_BARRIER) + i; } +static inline long long atomic64_fetch_add(long long i, atomic64_t *v) +{ + return __ATOMIC64_LOOP(v, i, __ATOMIC64_ADD, __ATOMIC64_BARRIER); +} + static inline void atomic64_add(long long i, atomic64_t *v) { #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES @@ -264,17 +279,21 @@ static inline long long atomic64_cmpxchg(atomic64_t *v, return old; } -#define ATOMIC64_OP(op, OP) \ +#define ATOMIC64_OPS(op, OP) \ static inline void atomic64_##op(long i, atomic64_t *v) \ { \ __ATOMIC64_LOOP(v, i, __ATOMIC64_##OP, __ATOMIC64_NO_BARRIER); \ +} \ +static inline long atomic64_fetch_##op(long i, atomic64_t *v) \ +{ \ + return __ATOMIC64_LOOP(v, i, __ATOMIC64_##OP, __ATOMIC64_BARRIER); \ } -ATOMIC64_OP(and, AND) -ATOMIC64_OP(or, OR) -ATOMIC64_OP(xor, XOR) +ATOMIC64_OPS(and, AND) +ATOMIC64_OPS(or, OR) +ATOMIC64_OPS(xor, XOR) -#undef ATOMIC64_OP +#undef ATOMIC64_OPS #undef __ATOMIC64_LOOP static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u) @@ -315,6 +334,7 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v) #define atomic64_inc_return(_v) atomic64_add_return(1, _v) #define atomic64_inc_and_test(_v) (atomic64_add_return(1, _v) == 0) #define atomic64_sub_return(_i, _v) atomic64_add_return(-(long long)(_i), _v) +#define atomic64_fetch_sub(_i, _v) atomic64_fetch_add(-(long long)(_i), _v) #define atomic64_sub(_i, _v) atomic64_add(-(long long)(_i), _v) #define atomic64_sub_and_test(_i, _v) (atomic64_sub_return(_i, _v) == 0) #define atomic64_dec(_v) atomic64_sub(1, _v) diff --git a/arch/s390/include/asm/cache.h b/arch/s390/include/asm/cache.h index 22da3b34c655..05219a5e0b2f 100644 --- a/arch/s390/include/asm/cache.h +++ b/arch/s390/include/asm/cache.h @@ -13,9 +13,6 @@ #define L1_CACHE_SHIFT 8 #define NET_SKB_PAD 32 -#define __read_mostly __attribute__((__section__(".data..read_mostly"))) - -/* Read-only memory is marked before mark_rodata_ro() is called. */ -#define __ro_after_init __read_mostly +#define __read_mostly __section(.data..read_mostly) #endif diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h index d1e7b0a0feeb..f7ed88cc066e 100644 --- a/arch/s390/include/asm/cio.h +++ b/arch/s390/include/asm/cio.h @@ -320,7 +320,7 @@ struct cio_iplinfo { extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo); /* Function from drivers/s390/cio/chsc.c */ -int chsc_sstpc(void *page, unsigned int op, u16 ctrl); +int chsc_sstpc(void *page, unsigned int op, u16 ctrl, u64 *clock_delta); int chsc_sstpi(void *page, void *result, size_t size); #endif diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h index 9dd04b9e9782..03516476127b 100644 --- a/arch/s390/include/asm/cpu_mf.h +++ b/arch/s390/include/asm/cpu_mf.h @@ -169,16 +169,27 @@ static inline int lcctl(u64 ctl) } /* Extract CPU counter */ -static inline int ecctr(u64 ctr, u64 *val) +static inline int __ecctr(u64 ctr, u64 *content) { - register u64 content asm("4") = 0; + register u64 _content asm("4") = 0; int cc; asm volatile ( " .insn rre,0xb2e40000,%0,%2\n" " ipm %1\n" " srl %1,28\n" - : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); + : "=d" (_content), "=d" (cc) : "d" (ctr) : "cc"); + *content = _content; + return cc; +} + +/* Extract CPU counter */ +static inline int ecctr(u64 ctr, u64 *val) +{ + u64 content; + int cc; + + cc = __ecctr(ctr, &content); if (!cc) *val = content; return cc; diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h index 5fac921c1c42..86cae09e076a 100644 --- a/arch/s390/include/asm/diag.h +++ b/arch/s390/include/asm/diag.h @@ -49,7 +49,7 @@ static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn) diag_stat_inc(DIAG_STAT_X010); asm volatile( "0: diag %0,%1,0x10\n" - "1:\n" + "1: nopr %%r7\n" EX_TABLE(0b, 1b) EX_TABLE(1b, 1b) : : "a" (start_addr), "a" (end_addr)); diff --git a/arch/s390/include/asm/etr.h b/arch/s390/include/asm/etr.h deleted file mode 100644 index 105f90e63a0e..000000000000 --- a/arch/s390/include/asm/etr.h +++ /dev/null @@ -1,261 +0,0 @@ -/* - * Copyright IBM Corp. 2006 - * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) - */ -#ifndef __S390_ETR_H -#define __S390_ETR_H - -/* ETR attachment control register */ -struct etr_eacr { - unsigned int e0 : 1; /* port 0 stepping control */ - unsigned int e1 : 1; /* port 1 stepping control */ - unsigned int _pad0 : 5; /* must be 00100 */ - unsigned int dp : 1; /* data port control */ - unsigned int p0 : 1; /* port 0 change recognition control */ - unsigned int p1 : 1; /* port 1 change recognition control */ - unsigned int _pad1 : 3; /* must be 000 */ - unsigned int ea : 1; /* ETR alert control */ - unsigned int es : 1; /* ETR sync check control */ - unsigned int sl : 1; /* switch to local control */ -} __attribute__ ((packed)); - -/* Port state returned by steai */ -enum etr_psc { - etr_psc_operational = 0, - etr_psc_semi_operational = 1, - etr_psc_protocol_error = 4, - etr_psc_no_symbols = 8, - etr_psc_no_signal = 12, - etr_psc_pps_mode = 13 -}; - -/* Logical port state returned by stetr */ -enum etr_lpsc { - etr_lpsc_operational_step = 0, - etr_lpsc_operational_alt = 1, - etr_lpsc_semi_operational = 2, - etr_lpsc_protocol_error = 4, - etr_lpsc_no_symbol_sync = 8, - etr_lpsc_no_signal = 12, - etr_lpsc_pps_mode = 13 -}; - -/* ETR status words */ -struct etr_esw { - struct etr_eacr eacr; /* attachment control register */ - unsigned int y : 1; /* stepping mode */ - unsigned int _pad0 : 5; /* must be 00000 */ - unsigned int p : 1; /* stepping port number */ - unsigned int q : 1; /* data port number */ - unsigned int psc0 : 4; /* port 0 state code */ - unsigned int psc1 : 4; /* port 1 state code */ -} __attribute__ ((packed)); - -/* Second level data register status word */ -struct etr_slsw { - unsigned int vv1 : 1; /* copy of validity bit data frame 1 */ - unsigned int vv2 : 1; /* copy of validity bit data frame 2 */ - unsigned int vv3 : 1; /* copy of validity bit data frame 3 */ - unsigned int vv4 : 1; /* copy of validity bit data frame 4 */ - unsigned int _pad0 : 19; /* must by all zeroes */ - unsigned int n : 1; /* EAF port number */ - unsigned int v1 : 1; /* validity bit ETR data frame 1 */ - unsigned int v2 : 1; /* validity bit ETR data frame 2 */ - unsigned int v3 : 1; /* validity bit ETR data frame 3 */ - unsigned int v4 : 1; /* validity bit ETR data frame 4 */ - unsigned int _pad1 : 4; /* must be 0000 */ -} __attribute__ ((packed)); - -/* ETR data frames */ -struct etr_edf1 { - unsigned int u : 1; /* untuned bit */ - unsigned int _pad0 : 1; /* must be 0 */ - unsigned int r : 1; /* service request bit */ - unsigned int _pad1 : 4; /* must be 0000 */ - unsigned int a : 1; /* time adjustment bit */ - unsigned int net_id : 8; /* ETR network id */ - unsigned int etr_id : 8; /* id of ETR which sends data frames */ - unsigned int etr_pn : 8; /* port number of ETR output port */ -} __attribute__ ((packed)); - -struct etr_edf2 { - unsigned int etv : 32; /* Upper 32 bits of TOD. */ -} __attribute__ ((packed)); - -struct etr_edf3 { - unsigned int rc : 8; /* failure reason code */ - unsigned int _pad0 : 3; /* must be 000 */ - unsigned int c : 1; /* ETR coupled bit */ - unsigned int tc : 4; /* ETR type code */ - unsigned int blto : 8; /* biased local time offset */ - /* (blto - 128) * 15 = minutes */ - unsigned int buo : 8; /* biased utc offset */ - /* (buo - 128) = leap seconds */ -} __attribute__ ((packed)); - -struct etr_edf4 { - unsigned int ed : 8; /* ETS device dependent data */ - unsigned int _pad0 : 1; /* must be 0 */ - unsigned int buc : 5; /* biased ut1 correction */ - /* (buc - 16) * 0.1 seconds */ - unsigned int em : 6; /* ETS error magnitude */ - unsigned int dc : 6; /* ETS drift code */ - unsigned int sc : 6; /* ETS steering code */ -} __attribute__ ((packed)); - -/* - * ETR attachment information block, two formats - * format 1 has 4 reserved words with a size of 64 bytes - * format 2 has 16 reserved words with a size of 96 bytes - */ -struct etr_aib { - struct etr_esw esw; - struct etr_slsw slsw; - unsigned long long tsp; - struct etr_edf1 edf1; - struct etr_edf2 edf2; - struct etr_edf3 edf3; - struct etr_edf4 edf4; - unsigned int reserved[16]; -} __attribute__ ((packed,aligned(8))); - -/* ETR interruption parameter */ -struct etr_irq_parm { - unsigned int _pad0 : 8; - unsigned int pc0 : 1; /* port 0 state change */ - unsigned int pc1 : 1; /* port 1 state change */ - unsigned int _pad1 : 3; - unsigned int eai : 1; /* ETR alert indication */ - unsigned int _pad2 : 18; -} __attribute__ ((packed)); - -/* Query TOD offset result */ -struct etr_ptff_qto { - unsigned long long physical_clock; - unsigned long long tod_offset; - unsigned long long logical_tod_offset; - unsigned long long tod_epoch_difference; -} __attribute__ ((packed)); - -/* Inline assembly helper functions */ -static inline int etr_setr(struct etr_eacr *ctrl) -{ - int rc = -EOPNOTSUPP; - - asm volatile( - " .insn s,0xb2160000,%1\n" - "0: la %0,0\n" - "1:\n" - EX_TABLE(0b,1b) - : "+d" (rc) : "Q" (*ctrl)); - return rc; -} - -/* Stores a format 1 aib with 64 bytes */ -static inline int etr_stetr(struct etr_aib *aib) -{ - int rc = -EOPNOTSUPP; - - asm volatile( - " .insn s,0xb2170000,%1\n" - "0: la %0,0\n" - "1:\n" - EX_TABLE(0b,1b) - : "+d" (rc) : "Q" (*aib)); - return rc; -} - -/* Stores a format 2 aib with 96 bytes for specified port */ -static inline int etr_steai(struct etr_aib *aib, unsigned int func) -{ - register unsigned int reg0 asm("0") = func; - int rc = -EOPNOTSUPP; - - asm volatile( - " .insn s,0xb2b30000,%1\n" - "0: la %0,0\n" - "1:\n" - EX_TABLE(0b,1b) - : "+d" (rc) : "Q" (*aib), "d" (reg0)); - return rc; -} - -/* Function codes for the steai instruction. */ -#define ETR_STEAI_STEPPING_PORT 0x10 -#define ETR_STEAI_ALTERNATE_PORT 0x11 -#define ETR_STEAI_PORT_0 0x12 -#define ETR_STEAI_PORT_1 0x13 - -static inline int etr_ptff(void *ptff_block, unsigned int func) -{ - register unsigned int reg0 asm("0") = func; - register unsigned long reg1 asm("1") = (unsigned long) ptff_block; - int rc = -EOPNOTSUPP; - - asm volatile( - " .word 0x0104\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (rc), "=m" (ptff_block) - : "d" (reg0), "d" (reg1), "m" (ptff_block) : "cc"); - return rc; -} - -/* Function codes for the ptff instruction. */ -#define ETR_PTFF_QAF 0x00 /* query available functions */ -#define ETR_PTFF_QTO 0x01 /* query tod offset */ -#define ETR_PTFF_QSI 0x02 /* query steering information */ -#define ETR_PTFF_ATO 0x40 /* adjust tod offset */ -#define ETR_PTFF_STO 0x41 /* set tod offset */ -#define ETR_PTFF_SFS 0x42 /* set fine steering rate */ -#define ETR_PTFF_SGS 0x43 /* set gross steering rate */ - -/* Functions needed by the machine check handler */ -int etr_switch_to_local(void); -int etr_sync_check(void); -void etr_queue_work(void); - -/* notifier for syncs */ -extern struct atomic_notifier_head s390_epoch_delta_notifier; - -/* STP interruption parameter */ -struct stp_irq_parm { - unsigned int _pad0 : 14; - unsigned int tsc : 1; /* Timing status change */ - unsigned int lac : 1; /* Link availability change */ - unsigned int tcpc : 1; /* Time control parameter change */ - unsigned int _pad2 : 15; -} __attribute__ ((packed)); - -#define STP_OP_SYNC 1 -#define STP_OP_CTRL 3 - -struct stp_sstpi { - unsigned int rsvd0; - unsigned int rsvd1 : 8; - unsigned int stratum : 8; - unsigned int vbits : 16; - unsigned int leaps : 16; - unsigned int tmd : 4; - unsigned int ctn : 4; - unsigned int rsvd2 : 3; - unsigned int c : 1; - unsigned int tst : 4; - unsigned int tzo : 16; - unsigned int dsto : 16; - unsigned int ctrl : 16; - unsigned int rsvd3 : 16; - unsigned int tto; - unsigned int rsvd4; - unsigned int ctnid[3]; - unsigned int rsvd5; - unsigned int todoff[4]; - unsigned int rsvd6[48]; -} __attribute__ ((packed)); - -/* Functions needed by the machine check handler */ -int stp_sync_check(void); -int stp_island_check(void); -void stp_queue_work(void); - -#endif /* __S390_ETR_H */ diff --git a/arch/s390/include/asm/fcx.h b/arch/s390/include/asm/fcx.h index 7ecb92b469b6..04cb4b4bcc5f 100644 --- a/arch/s390/include/asm/fcx.h +++ b/arch/s390/include/asm/fcx.h @@ -6,7 +6,7 @@ */ #ifndef _ASM_S390_FCX_H -#define _ASM_S390_FCX_H _ASM_S390_FCX_H +#define _ASM_S390_FCX_H #include <linux/types.h> diff --git a/arch/s390/include/asm/fpu/api.h b/arch/s390/include/asm/fpu/api.h index 5e04f3cbd320..6aba6fc406ad 100644 --- a/arch/s390/include/asm/fpu/api.h +++ b/arch/s390/include/asm/fpu/api.h @@ -1,6 +1,41 @@ /* * In-kernel FPU support functions * + * + * Consider these guidelines before using in-kernel FPU functions: + * + * 1. Use kernel_fpu_begin() and kernel_fpu_end() to enclose all in-kernel + * use of floating-point or vector registers and instructions. + * + * 2. For kernel_fpu_begin(), specify the vector register range you want to + * use with the KERNEL_VXR_* constants. Consider these usage guidelines: + * + * a) If your function typically runs in process-context, use the lower + * half of the vector registers, for example, specify KERNEL_VXR_LOW. + * b) If your function typically runs in soft-irq or hard-irq context, + * prefer using the upper half of the vector registers, for example, + * specify KERNEL_VXR_HIGH. + * + * If you adhere to these guidelines, an interrupted process context + * does not require to save and restore vector registers because of + * disjoint register ranges. + * + * Also note that the __kernel_fpu_begin()/__kernel_fpu_end() functions + * includes logic to save and restore up to 16 vector registers at once. + * + * 3. You can nest kernel_fpu_begin()/kernel_fpu_end() by using different + * struct kernel_fpu states. Vector registers that are in use by outer + * levels are saved and restored. You can minimize the save and restore + * effort by choosing disjoint vector register ranges. + * + * 5. To use vector floating-point instructions, specify the KERNEL_FPC + * flag to save and restore floating-point controls in addition to any + * vector register range. + * + * 6. To use floating-point registers and instructions only, specify the + * KERNEL_FPR flag. This flag triggers a save and restore of vector + * registers V0 to V15 and floating-point controls. + * * Copyright IBM Corp. 2015 * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> */ @@ -8,6 +43,8 @@ #ifndef _ASM_S390_FPU_API_H #define _ASM_S390_FPU_API_H +#include <linux/preempt.h> + void save_fpu_regs(void); static inline int test_fp_ctl(u32 fpc) @@ -22,9 +59,47 @@ static inline int test_fp_ctl(u32 fpc) " la %0,0\n" "1:\n" EX_TABLE(0b,1b) - : "=d" (rc), "=d" (orig_fpc) + : "=d" (rc), "=&d" (orig_fpc) : "d" (fpc), "0" (-EINVAL)); return rc; } +#define KERNEL_VXR_V0V7 1 +#define KERNEL_VXR_V8V15 2 +#define KERNEL_VXR_V16V23 4 +#define KERNEL_VXR_V24V31 8 +#define KERNEL_FPR 16 +#define KERNEL_FPC 256 + +#define KERNEL_VXR_LOW (KERNEL_VXR_V0V7|KERNEL_VXR_V8V15) +#define KERNEL_VXR_MID (KERNEL_VXR_V8V15|KERNEL_VXR_V16V23) +#define KERNEL_VXR_HIGH (KERNEL_VXR_V16V23|KERNEL_VXR_V24V31) + +#define KERNEL_FPU_MASK (KERNEL_VXR_LOW|KERNEL_VXR_HIGH|KERNEL_FPR) + +struct kernel_fpu; + +/* + * Note the functions below must be called with preemption disabled. + * Do not enable preemption before calling __kernel_fpu_end() to prevent + * an corruption of an existing kernel FPU state. + * + * Prefer using the kernel_fpu_begin()/kernel_fpu_end() pair of functions. + */ +void __kernel_fpu_begin(struct kernel_fpu *state, u32 flags); +void __kernel_fpu_end(struct kernel_fpu *state); + + +static inline void kernel_fpu_begin(struct kernel_fpu *state, u32 flags) +{ + preempt_disable(); + __kernel_fpu_begin(state, flags); +} + +static inline void kernel_fpu_end(struct kernel_fpu *state) +{ + __kernel_fpu_end(state); + preempt_enable(); +} + #endif /* _ASM_S390_FPU_API_H */ diff --git a/arch/s390/include/asm/fpu/types.h b/arch/s390/include/asm/fpu/types.h index fe937c9b6471..bce255ead72b 100644 --- a/arch/s390/include/asm/fpu/types.h +++ b/arch/s390/include/asm/fpu/types.h @@ -24,4 +24,14 @@ struct fpu { /* VX array structure for address operand constraints in inline assemblies */ struct vx_array { __vector128 _[__NUM_VXRS]; }; +/* In-kernel FPU state structure */ +struct kernel_fpu { + u32 mask; + u32 fpc; + union { + freg_t fprs[__NUM_FPRS]; + __vector128 vxrs[__NUM_VXRS]; + }; +}; + #endif /* _ASM_S390_FPU_TYPES_H */ diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h index d9be7c0c1291..4c7fac75090e 100644 --- a/arch/s390/include/asm/hugetlb.h +++ b/arch/s390/include/asm/hugetlb.h @@ -41,7 +41,10 @@ static inline int prepare_hugepage_range(struct file *file, static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - pte_val(*ptep) = _SEGMENT_ENTRY_EMPTY; + if ((pte_val(*ptep) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3) + pte_val(*ptep) = _REGION3_ENTRY_EMPTY; + else + pte_val(*ptep) = _SEGMENT_ENTRY_EMPTY; } static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h index 6fc44dca193e..4da22b2f0521 100644 --- a/arch/s390/include/asm/ipl.h +++ b/arch/s390/include/asm/ipl.h @@ -141,11 +141,11 @@ extern void setup_ipl(void); * DIAG 308 support */ enum diag308_subcode { - DIAG308_REL_HSA = 2, - DIAG308_IPL = 3, - DIAG308_DUMP = 4, - DIAG308_SET = 5, - DIAG308_STORE = 6, + DIAG308_REL_HSA = 2, + DIAG308_LOAD_CLEAR = 3, + DIAG308_LOAD_NORMAL_DUMP = 4, + DIAG308_SET = 5, + DIAG308_STORE = 6, }; enum diag308_ipl_type { diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h index f97b055de76a..70c9bce766f5 100644 --- a/arch/s390/include/asm/irq.h +++ b/arch/s390/include/asm/irq.h @@ -7,11 +7,8 @@ #define NR_IRQS_BASE 3 -#ifdef CONFIG_PCI_NR_MSI -# define NR_IRQS (NR_IRQS_BASE + CONFIG_PCI_NR_MSI) -#else -# define NR_IRQS NR_IRQS_BASE -#endif +#define NR_IRQS NR_IRQS_BASE +#define NR_IRQS_LEGACY NR_IRQS_BASE /* External interruption codes */ #define EXT_IRQ_INTERRUPT_KEY 0x0040 diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h index 7f9fd5e3f1bf..9be198f5ee79 100644 --- a/arch/s390/include/asm/jump_label.h +++ b/arch/s390/include/asm/jump_label.h @@ -4,6 +4,7 @@ #ifndef __ASSEMBLY__ #include <linux/types.h> +#include <linux/stringify.h> #define JUMP_LABEL_NOP_SIZE 6 #define JUMP_LABEL_NOP_OFFSET 2 diff --git a/arch/s390/include/asm/kprobes.h b/arch/s390/include/asm/kprobes.h index b47ad3b642cc..591e5a5279b0 100644 --- a/arch/s390/include/asm/kprobes.h +++ b/arch/s390/include/asm/kprobes.h @@ -43,9 +43,9 @@ typedef u16 kprobe_opcode_t; #define MAX_INSN_SIZE 0x0003 #define MAX_STACK_SIZE 64 #define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \ - (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \ + (((unsigned long)task_stack_page(current)) + THREAD_SIZE - (ADDR))) \ ? (MAX_STACK_SIZE) \ - : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) + : (((unsigned long)task_stack_page(current)) + THREAD_SIZE - (ADDR))) #define kretprobe_blacklist_size 0 diff --git a/arch/s390/include/asm/mathemu.h b/arch/s390/include/asm/mathemu.h deleted file mode 100644 index 614dfaf47f71..000000000000 --- a/arch/s390/include/asm/mathemu.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * IEEE floating point emulation. - * - * S390 version - * Copyright IBM Corp. 1999 - * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) - */ - -#ifndef __MATHEMU__ -#define __MATHEMU__ - -extern int math_emu_b3(__u8 *, struct pt_regs *); -extern int math_emu_ed(__u8 *, struct pt_regs *); -extern int math_emu_ldr(__u8 *); -extern int math_emu_ler(__u8 *); -extern int math_emu_std(__u8 *, struct pt_regs *); -extern int math_emu_ld(__u8 *, struct pt_regs *); -extern int math_emu_ste(__u8 *, struct pt_regs *); -extern int math_emu_le(__u8 *, struct pt_regs *); -extern int math_emu_lfpc(__u8 *, struct pt_regs *); -extern int math_emu_stfpc(__u8 *, struct pt_regs *); -extern int math_emu_srnm(__u8 *, struct pt_regs *); - -#endif /* __MATHEMU__ */ - - - - diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index 081b2ad99d73..18226437a832 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -6,7 +6,7 @@ typedef struct { cpumask_t cpu_attach_mask; - atomic_t attach_count; + atomic_t flush_count; unsigned int flush_mm; spinlock_t list_lock; struct list_head pgtable_list; diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index c837b79b455d..f77c638bf397 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -19,7 +19,7 @@ static inline int init_new_context(struct task_struct *tsk, INIT_LIST_HEAD(&mm->context.pgtable_list); INIT_LIST_HEAD(&mm->context.gmap_list); cpumask_clear(&mm->context.cpu_attach_mask); - atomic_set(&mm->context.attach_count, 0); + atomic_set(&mm->context.flush_count, 0); mm->context.flush_mm = 0; #ifdef CONFIG_PGSTE mm->context.alloc_pgste = page_table_allocate_pgste; @@ -90,15 +90,12 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, S390_lowcore.user_asce = next->context.asce; if (prev == next) return; - if (MACHINE_HAS_TLB_LC) - cpumask_set_cpu(cpu, &next->context.cpu_attach_mask); + cpumask_set_cpu(cpu, &next->context.cpu_attach_mask); + cpumask_set_cpu(cpu, mm_cpumask(next)); /* Clear old ASCE by loading the kernel ASCE. */ __ctl_load(S390_lowcore.kernel_asce, 1, 1); __ctl_load(S390_lowcore.kernel_asce, 7, 7); - atomic_inc(&next->context.attach_count); - atomic_dec(&prev->context.attach_count); - if (MACHINE_HAS_TLB_LC) - cpumask_clear_cpu(cpu, &prev->context.cpu_attach_mask); + cpumask_clear_cpu(cpu, &prev->context.cpu_attach_mask); } #define finish_arch_post_lock_switch finish_arch_post_lock_switch @@ -110,10 +107,9 @@ static inline void finish_arch_post_lock_switch(void) load_kernel_asce(); if (mm) { preempt_disable(); - while (atomic_read(&mm->context.attach_count) >> 16) + while (atomic_read(&mm->context.flush_count)) cpu_relax(); - cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm)); if (mm->context.flush_mm) __tlb_flush_mm(mm); preempt_enable(); @@ -128,7 +124,6 @@ static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next) { switch_mm(prev, next, current); - cpumask_set_cpu(smp_processor_id(), mm_cpumask(next)); set_user_asce(next); } diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h index 53eacbd4f09b..b2146c4119b2 100644 --- a/arch/s390/include/asm/page.h +++ b/arch/s390/include/asm/page.h @@ -21,6 +21,7 @@ #define HPAGE_SIZE (1UL << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) +#define HUGE_MAX_HSTATE 2 #define ARCH_HAS_SETCLEAR_HUGE_PTE #define ARCH_HAS_HUGE_PTE_TYPE @@ -30,11 +31,12 @@ #include <asm/setup.h> #ifndef __ASSEMBLY__ +void __storage_key_init_range(unsigned long start, unsigned long end); + static inline void storage_key_init_range(unsigned long start, unsigned long end) { -#if PAGE_DEFAULT_KEY - __storage_key_init_range(start, end); -#endif + if (PAGE_DEFAULT_KEY) + __storage_key_init_range(start, end); } #define clear_page(page) memset((page), 0, PAGE_SIZE) diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h index 1f7ff85c5e4c..c64c0befd3f3 100644 --- a/arch/s390/include/asm/perf_event.h +++ b/arch/s390/include/asm/perf_event.h @@ -86,16 +86,4 @@ struct sf_raw_sample { u8 padding[]; /* Padding to next multiple of 8 */ } __packed; -/* Perf hardware reserve and release functions */ -#ifdef CONFIG_PERF_EVENTS -int perf_reserve_sampling(void); -void perf_release_sampling(void); -#else /* CONFIG_PERF_EVENTS */ -static inline int perf_reserve_sampling(void) -{ - return 0; -} -static inline void perf_release_sampling(void) {} -#endif /* CONFIG_PERF_EVENTS */ - #endif /* _ASM_S390_PERF_EVENT_H */ diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 18d2beb89340..ea1533e07271 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -28,12 +28,33 @@ #include <linux/mm_types.h> #include <linux/page-flags.h> #include <linux/radix-tree.h> +#include <linux/atomic.h> #include <asm/bug.h> #include <asm/page.h> -extern pgd_t swapper_pg_dir[] __attribute__ ((aligned (4096))); +extern pgd_t swapper_pg_dir[]; extern void paging_init(void); extern void vmem_map_init(void); +pmd_t *vmem_pmd_alloc(void); +pte_t *vmem_pte_alloc(void); + +enum { + PG_DIRECT_MAP_4K = 0, + PG_DIRECT_MAP_1M, + PG_DIRECT_MAP_2G, + PG_DIRECT_MAP_MAX +}; + +extern atomic_long_t direct_pages_count[PG_DIRECT_MAP_MAX]; + +static inline void update_page_count(int level, long count) +{ + if (IS_ENABLED(CONFIG_PROC_FS)) + atomic_long_add(count, &direct_pages_count[level]); +} + +struct seq_file; +void arch_report_meminfo(struct seq_file *m); /* * The S390 doesn't have any external MMU info: the kernel page @@ -270,8 +291,23 @@ static inline int is_module_addr(void *addr) #define _REGION3_ENTRY (_REGION_ENTRY_TYPE_R3 | _REGION_ENTRY_LENGTH) #define _REGION3_ENTRY_EMPTY (_REGION_ENTRY_TYPE_R3 | _REGION_ENTRY_INVALID) -#define _REGION3_ENTRY_LARGE 0x400 /* RTTE-format control, large page */ -#define _REGION3_ENTRY_RO 0x200 /* page protection bit */ +#define _REGION3_ENTRY_ORIGIN_LARGE ~0x7fffffffUL /* large page address */ +#define _REGION3_ENTRY_ORIGIN ~0x7ffUL/* region third table origin */ + +#define _REGION3_ENTRY_DIRTY 0x2000 /* SW region dirty bit */ +#define _REGION3_ENTRY_YOUNG 0x1000 /* SW region young bit */ +#define _REGION3_ENTRY_LARGE 0x0400 /* RTTE-format control, large page */ +#define _REGION3_ENTRY_READ 0x0002 /* SW region read bit */ +#define _REGION3_ENTRY_WRITE 0x0001 /* SW region write bit */ + +#ifdef CONFIG_MEM_SOFT_DIRTY +#define _REGION3_ENTRY_SOFT_DIRTY 0x4000 /* SW region soft dirty bit */ +#else +#define _REGION3_ENTRY_SOFT_DIRTY 0x0000 /* SW region soft dirty bit */ +#endif + +#define _REGION_ENTRY_BITS 0xfffffffffffff227UL +#define _REGION_ENTRY_BITS_LARGE 0xffffffff8000fe27UL /* Bits in the segment table entry */ #define _SEGMENT_ENTRY_BITS 0xfffffffffffffe33UL @@ -297,7 +333,8 @@ static inline int is_module_addr(void *addr) #endif /* - * Segment table entry encoding (R = read-only, I = invalid, y = young bit): + * Segment table and region3 table entry encoding + * (R = read-only, I = invalid, y = young bit): * dy..R...I...rw * prot-none, clean, old 00..1...1...00 * prot-none, clean, young 01..1...1...00 @@ -391,6 +428,33 @@ static inline int is_module_addr(void *addr) _SEGMENT_ENTRY_READ) #define SEGMENT_WRITE __pgprot(_SEGMENT_ENTRY_READ | \ _SEGMENT_ENTRY_WRITE) +#define SEGMENT_KERNEL __pgprot(_SEGMENT_ENTRY | \ + _SEGMENT_ENTRY_LARGE | \ + _SEGMENT_ENTRY_READ | \ + _SEGMENT_ENTRY_WRITE | \ + _SEGMENT_ENTRY_YOUNG | \ + _SEGMENT_ENTRY_DIRTY) +#define SEGMENT_KERNEL_RO __pgprot(_SEGMENT_ENTRY | \ + _SEGMENT_ENTRY_LARGE | \ + _SEGMENT_ENTRY_READ | \ + _SEGMENT_ENTRY_YOUNG | \ + _SEGMENT_ENTRY_PROTECT) + +/* + * Region3 entry (large page) protection definitions. + */ + +#define REGION3_KERNEL __pgprot(_REGION_ENTRY_TYPE_R3 | \ + _REGION3_ENTRY_LARGE | \ + _REGION3_ENTRY_READ | \ + _REGION3_ENTRY_WRITE | \ + _REGION3_ENTRY_YOUNG | \ + _REGION3_ENTRY_DIRTY) +#define REGION3_KERNEL_RO __pgprot(_REGION_ENTRY_TYPE_R3 | \ + _REGION3_ENTRY_LARGE | \ + _REGION3_ENTRY_READ | \ + _REGION3_ENTRY_YOUNG | \ + _REGION_ENTRY_PROTECT) static inline int mm_has_pgste(struct mm_struct *mm) { @@ -424,6 +488,53 @@ static inline int mm_use_skey(struct mm_struct *mm) return 0; } +static inline void csp(unsigned int *ptr, unsigned int old, unsigned int new) +{ + register unsigned long reg2 asm("2") = old; + register unsigned long reg3 asm("3") = new; + unsigned long address = (unsigned long)ptr | 1; + + asm volatile( + " csp %0,%3" + : "+d" (reg2), "+m" (*ptr) + : "d" (reg3), "d" (address) + : "cc"); +} + +static inline void cspg(unsigned long *ptr, unsigned long old, unsigned long new) +{ + register unsigned long reg2 asm("2") = old; + register unsigned long reg3 asm("3") = new; + unsigned long address = (unsigned long)ptr | 1; + + asm volatile( + " .insn rre,0xb98a0000,%0,%3" + : "+d" (reg2), "+m" (*ptr) + : "d" (reg3), "d" (address) + : "cc"); +} + +#define CRDTE_DTT_PAGE 0x00UL +#define CRDTE_DTT_SEGMENT 0x10UL +#define CRDTE_DTT_REGION3 0x14UL +#define CRDTE_DTT_REGION2 0x18UL +#define CRDTE_DTT_REGION1 0x1cUL + +static inline void crdte(unsigned long old, unsigned long new, + unsigned long table, unsigned long dtt, + unsigned long address, unsigned long asce) +{ + register unsigned long reg2 asm("2") = old; + register unsigned long reg3 asm("3") = new; + register unsigned long reg4 asm("4") = table | dtt; + register unsigned long reg5 asm("5") = address; + + asm volatile(".insn rrf,0xb98f0000,%0,%2,%4,0" + : "+d" (reg2) + : "d" (reg3), "d" (reg4), "d" (reg5), "a" (asce) + : "memory", "cc"); +} + /* * pgd/pmd/pte query functions */ @@ -465,7 +576,7 @@ static inline int pud_none(pud_t pud) { if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) < _REGION_ENTRY_TYPE_R3) return 0; - return (pud_val(pud) & _REGION_ENTRY_INVALID) != 0UL; + return pud_val(pud) == _REGION3_ENTRY_EMPTY; } static inline int pud_large(pud_t pud) @@ -475,17 +586,35 @@ static inline int pud_large(pud_t pud) return !!(pud_val(pud) & _REGION3_ENTRY_LARGE); } +static inline unsigned long pud_pfn(pud_t pud) +{ + unsigned long origin_mask; + + origin_mask = _REGION3_ENTRY_ORIGIN; + if (pud_large(pud)) + origin_mask = _REGION3_ENTRY_ORIGIN_LARGE; + return (pud_val(pud) & origin_mask) >> PAGE_SHIFT; +} + +static inline int pmd_large(pmd_t pmd) +{ + return (pmd_val(pmd) & _SEGMENT_ENTRY_LARGE) != 0; +} + +static inline int pmd_bad(pmd_t pmd) +{ + if (pmd_large(pmd)) + return (pmd_val(pmd) & ~_SEGMENT_ENTRY_BITS_LARGE) != 0; + return (pmd_val(pmd) & ~_SEGMENT_ENTRY_BITS) != 0; +} + static inline int pud_bad(pud_t pud) { - /* - * With dynamic page table levels the pud can be a region table - * entry or a segment table entry. Check for the bit that are - * invalid for either table entry. - */ - unsigned long mask = - ~_SEGMENT_ENTRY_ORIGIN & ~_REGION_ENTRY_INVALID & - ~_REGION_ENTRY_TYPE_MASK & ~_REGION_ENTRY_LENGTH; - return (pud_val(pud) & mask) != 0; + if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) < _REGION_ENTRY_TYPE_R3) + return pmd_bad(__pmd(pud_val(pud))); + if (pud_large(pud)) + return (pud_val(pud) & ~_REGION_ENTRY_BITS_LARGE) != 0; + return (pud_val(pud) & ~_REGION_ENTRY_BITS) != 0; } static inline int pmd_present(pmd_t pmd) @@ -498,11 +627,6 @@ static inline int pmd_none(pmd_t pmd) return pmd_val(pmd) == _SEGMENT_ENTRY_INVALID; } -static inline int pmd_large(pmd_t pmd) -{ - return (pmd_val(pmd) & _SEGMENT_ENTRY_LARGE) != 0; -} - static inline unsigned long pmd_pfn(pmd_t pmd) { unsigned long origin_mask; @@ -513,13 +637,6 @@ static inline unsigned long pmd_pfn(pmd_t pmd) return (pmd_val(pmd) & origin_mask) >> PAGE_SHIFT; } -static inline int pmd_bad(pmd_t pmd) -{ - if (pmd_large(pmd)) - return (pmd_val(pmd) & ~_SEGMENT_ENTRY_BITS_LARGE) != 0; - return (pmd_val(pmd) & ~_SEGMENT_ENTRY_BITS) != 0; -} - #define __HAVE_ARCH_PMD_WRITE static inline int pmd_write(pmd_t pmd) { @@ -963,6 +1080,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) #define pte_page(x) pfn_to_page(pte_pfn(x)) #define pmd_page(pmd) pfn_to_page(pmd_pfn(pmd)) +#define pud_page(pud) pfn_to_page(pud_pfn(pud)) /* Find an entry in the lowest level page table.. */ #define pte_offset(pmd, addr) ((pte_t *) pmd_deref(*(pmd)) + pte_index(addr)) @@ -970,20 +1088,6 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) #define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address) #define pte_unmap(pte) do { } while (0) -#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLB_PAGE) -static inline unsigned long massage_pgprot_pmd(pgprot_t pgprot) -{ - /* - * pgprot is PAGE_NONE, PAGE_READ, or PAGE_WRITE (see __Pxxx / __Sxxx) - * Convert to segment table entry format. - */ - if (pgprot_val(pgprot) == pgprot_val(PAGE_NONE)) - return pgprot_val(SEGMENT_NONE); - if (pgprot_val(pgprot) == pgprot_val(PAGE_READ)) - return pgprot_val(SEGMENT_READ); - return pgprot_val(SEGMENT_WRITE); -} - static inline pmd_t pmd_wrprotect(pmd_t pmd) { pmd_val(pmd) &= ~_SEGMENT_ENTRY_WRITE; @@ -1020,6 +1124,56 @@ static inline pmd_t pmd_mkdirty(pmd_t pmd) return pmd; } +static inline pud_t pud_wrprotect(pud_t pud) +{ + pud_val(pud) &= ~_REGION3_ENTRY_WRITE; + pud_val(pud) |= _REGION_ENTRY_PROTECT; + return pud; +} + +static inline pud_t pud_mkwrite(pud_t pud) +{ + pud_val(pud) |= _REGION3_ENTRY_WRITE; + if (pud_large(pud) && !(pud_val(pud) & _REGION3_ENTRY_DIRTY)) + return pud; + pud_val(pud) &= ~_REGION_ENTRY_PROTECT; + return pud; +} + +static inline pud_t pud_mkclean(pud_t pud) +{ + if (pud_large(pud)) { + pud_val(pud) &= ~_REGION3_ENTRY_DIRTY; + pud_val(pud) |= _REGION_ENTRY_PROTECT; + } + return pud; +} + +static inline pud_t pud_mkdirty(pud_t pud) +{ + if (pud_large(pud)) { + pud_val(pud) |= _REGION3_ENTRY_DIRTY | + _REGION3_ENTRY_SOFT_DIRTY; + if (pud_val(pud) & _REGION3_ENTRY_WRITE) + pud_val(pud) &= ~_REGION_ENTRY_PROTECT; + } + return pud; +} + +#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLB_PAGE) +static inline unsigned long massage_pgprot_pmd(pgprot_t pgprot) +{ + /* + * pgprot is PAGE_NONE, PAGE_READ, or PAGE_WRITE (see __Pxxx / __Sxxx) + * Convert to segment table entry format. + */ + if (pgprot_val(pgprot) == pgprot_val(PAGE_NONE)) + return pgprot_val(SEGMENT_NONE); + if (pgprot_val(pgprot) == pgprot_val(PAGE_READ)) + return pgprot_val(SEGMENT_READ); + return pgprot_val(SEGMENT_WRITE); +} + static inline pmd_t pmd_mkyoung(pmd_t pmd) { if (pmd_large(pmd)) { @@ -1068,15 +1222,8 @@ static inline pmd_t mk_pmd_phys(unsigned long physpage, pgprot_t pgprot) static inline void __pmdp_csp(pmd_t *pmdp) { - register unsigned long reg2 asm("2") = pmd_val(*pmdp); - register unsigned long reg3 asm("3") = pmd_val(*pmdp) | - _SEGMENT_ENTRY_INVALID; - register unsigned long reg4 asm("4") = ((unsigned long) pmdp) + 5; - - asm volatile( - " csp %1,%3" - : "=m" (*pmdp) - : "d" (reg2), "d" (reg3), "d" (reg4), "m" (*pmdp) : "cc"); + csp((unsigned int *)pmdp + 1, pmd_val(*pmdp), + pmd_val(*pmdp) | _SEGMENT_ENTRY_INVALID); } static inline void __pmdp_idte(unsigned long address, pmd_t *pmdp) @@ -1091,6 +1238,19 @@ static inline void __pmdp_idte(unsigned long address, pmd_t *pmdp) : "cc" ); } +static inline void __pudp_idte(unsigned long address, pud_t *pudp) +{ + unsigned long r3o; + + r3o = (unsigned long) pudp - pud_index(address) * sizeof(pud_t); + r3o |= _ASCE_TYPE_REGION3; + asm volatile( + " .insn rrf,0xb98e0000,%2,%3,0,0" + : "=m" (*pudp) + : "m" (*pudp), "a" (r3o), "a" ((address & PUD_MASK)) + : "cc"); +} + static inline void __pmdp_idte_local(unsigned long address, pmd_t *pmdp) { unsigned long sto; @@ -1103,8 +1263,22 @@ static inline void __pmdp_idte_local(unsigned long address, pmd_t *pmdp) : "cc" ); } +static inline void __pudp_idte_local(unsigned long address, pud_t *pudp) +{ + unsigned long r3o; + + r3o = (unsigned long) pudp - pud_index(address) * sizeof(pud_t); + r3o |= _ASCE_TYPE_REGION3; + asm volatile( + " .insn rrf,0xb98e0000,%2,%3,0,1" + : "=m" (*pudp) + : "m" (*pudp), "a" (r3o), "a" ((address & PUD_MASK)) + : "cc"); +} + pmd_t pmdp_xchg_direct(struct mm_struct *, unsigned long, pmd_t *, pmd_t); pmd_t pmdp_xchg_lazy(struct mm_struct *, unsigned long, pmd_t *, pmd_t); +pud_t pudp_xchg_direct(struct mm_struct *, unsigned long, pud_t *, pud_t); #ifdef CONFIG_TRANSPARENT_HUGEPAGE diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 9d4d311d7e52..09529202ea77 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -77,7 +77,10 @@ static inline void get_cpu_id(struct cpuid *ptr) asm volatile("stidp %0" : "=Q" (*ptr)); } -extern void s390_adjust_jiffies(void); +void s390_adjust_jiffies(void); +void s390_update_cpu_mhz(void); +void cpu_detect_mhz_feature(void); + extern const struct seq_operations cpuinfo_op; extern int sysctl_ieee_emulation_warnings; extern void execve_tail(void); @@ -233,6 +236,18 @@ void cpu_relax(void); #define cpu_relax_lowlatency() barrier() +#define ECAG_CACHE_ATTRIBUTE 0 +#define ECAG_CPU_ATTRIBUTE 1 + +static inline unsigned long __ecag(unsigned int asi, unsigned char parm) +{ + unsigned long val; + + asm volatile(".insn rsy,0xeb000000004c,%0,0,0(%1)" /* ecag */ + : "=d" (val) : "a" (asi << 8 | parm)); + return val; +} + static inline void psw_set_key(unsigned int key) { asm volatile("spka 0(%0)" : : "d" (key)); diff --git a/arch/s390/include/asm/rwsem.h b/arch/s390/include/asm/rwsem.h index c75e4471e618..597e7e96b59e 100644 --- a/arch/s390/include/asm/rwsem.h +++ b/arch/s390/include/asm/rwsem.h @@ -207,41 +207,4 @@ static inline void __downgrade_write(struct rw_semaphore *sem) rwsem_downgrade_wake(sem); } -/* - * implement atomic add functionality - */ -static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem) -{ - signed long old, new; - - asm volatile( - " lg %0,%2\n" - "0: lgr %1,%0\n" - " agr %1,%4\n" - " csg %0,%1,%2\n" - " jl 0b" - : "=&d" (old), "=&d" (new), "=Q" (sem->count) - : "Q" (sem->count), "d" (delta) - : "cc", "memory"); -} - -/* - * implement exchange and add functionality - */ -static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem) -{ - signed long old, new; - - asm volatile( - " lg %0,%2\n" - "0: lgr %1,%0\n" - " agr %1,%4\n" - " csg %0,%1,%2\n" - " jl 0b" - : "=&d" (old), "=&d" (new), "=Q" (sem->count) - : "Q" (sem->count), "d" (delta) - : "cc", "memory"); - return new; -} - #endif /* _S390_RWSEM_H */ diff --git a/arch/s390/include/asm/sections.h b/arch/s390/include/asm/sections.h index fbd9116eb17b..5ce29fe100ba 100644 --- a/arch/s390/include/asm/sections.h +++ b/arch/s390/include/asm/sections.h @@ -4,5 +4,6 @@ #include <asm-generic/sections.h> extern char _eshared[], _ehead[]; +extern char __start_ro_after_init[], __end_ro_after_init[]; #endif diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index c0f0efbb6ab5..5e8d57e1cc5e 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -86,9 +86,13 @@ extern char vmpoff_cmd[]; #define CONSOLE_IS_SCLP (console_mode == 1) #define CONSOLE_IS_3215 (console_mode == 2) #define CONSOLE_IS_3270 (console_mode == 3) +#define CONSOLE_IS_VT220 (console_mode == 4) +#define CONSOLE_IS_HVC (console_mode == 5) #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) +#define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) +#define SET_CONSOLE_HVC do { console_mode = 5; } while (0) #define NSS_NAME_SIZE 8 extern char kernel_nss_name[]; diff --git a/arch/s390/include/asm/sfp-machine.h b/arch/s390/include/asm/sfp-machine.h deleted file mode 100644 index 4e16aede4b06..000000000000 --- a/arch/s390/include/asm/sfp-machine.h +++ /dev/null @@ -1,142 +0,0 @@ -/* Machine-dependent software floating-point definitions. - S/390 kernel version. - Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Richard Henderson (rth@cygnus.com), - Jakub Jelinek (jj@ultra.linux.cz), - David S. Miller (davem@redhat.com) and - Peter Maydell (pmaydell@chiark.greenend.org.uk). - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, write to the Free Software Foundation, Inc., - 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#ifndef _SFP_MACHINE_H -#define _SFP_MACHINE_H - - -#define _FP_W_TYPE_SIZE 32 -#define _FP_W_TYPE unsigned int -#define _FP_WS_TYPE signed int -#define _FP_I_TYPE int - -#define _FP_MUL_MEAT_S(R,X,Y) \ - _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) -#define _FP_MUL_MEAT_D(R,X,Y) \ - _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) -#define _FP_MUL_MEAT_Q(R,X,Y) \ - _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) - -#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv(S,R,X,Y) -#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) -#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) - -#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) -#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 -#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 -#define _FP_NANSIGN_S 0 -#define _FP_NANSIGN_D 0 -#define _FP_NANSIGN_Q 0 - -#define _FP_KEEPNANFRACP 1 - -/* - * If one NaN is signaling and the other is not, - * we choose that one, otherwise we choose X. - */ -#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ - do { \ - if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \ - && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \ - { \ - R##_s = Y##_s; \ - _FP_FRAC_COPY_##wc(R,Y); \ - } \ - else \ - { \ - R##_s = X##_s; \ - _FP_FRAC_COPY_##wc(R,X); \ - } \ - R##_c = FP_CLS_NAN; \ - } while (0) - -/* Some assembly to speed things up. */ -#define __FP_FRAC_ADD_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({ \ - unsigned int __r2 = (x2) + (y2); \ - unsigned int __r1 = (x1); \ - unsigned int __r0 = (x0); \ - asm volatile( \ - " alr %2,%3\n" \ - " brc 12,0f\n" \ - " lhi 0,1\n" \ - " alr %1,0\n" \ - " brc 12,0f\n" \ - " alr %0,0\n" \ - "0:" \ - : "+&d" (__r2), "+&d" (__r1), "+&d" (__r0) \ - : "d" (y0), "i" (1) : "cc", "0" ); \ - asm volatile( \ - " alr %1,%2\n" \ - " brc 12,0f\n" \ - " ahi %0,1\n" \ - "0:" \ - : "+&d" (__r2), "+&d" (__r1) \ - : "d" (y1) : "cc"); \ - (r2) = __r2; \ - (r1) = __r1; \ - (r0) = __r0; \ -}) - -#define __FP_FRAC_SUB_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({ \ - unsigned int __r2 = (x2) - (y2); \ - unsigned int __r1 = (x1); \ - unsigned int __r0 = (x0); \ - asm volatile( \ - " slr %2,%3\n" \ - " brc 3,0f\n" \ - " lhi 0,1\n" \ - " slr %1,0\n" \ - " brc 3,0f\n" \ - " slr %0,0\n" \ - "0:" \ - : "+&d" (__r2), "+&d" (__r1), "+&d" (__r0) \ - : "d" (y0) : "cc", "0"); \ - asm volatile( \ - " slr %1,%2\n" \ - " brc 3,0f\n" \ - " ahi %0,-1\n" \ - "0:" \ - : "+&d" (__r2), "+&d" (__r1) \ - : "d" (y1) : "cc"); \ - (r2) = __r2; \ - (r1) = __r1; \ - (r0) = __r0; \ -}) - -#define __FP_FRAC_DEC_3(x2,x1,x0,y2,y1,y0) __FP_FRAC_SUB_3(x2,x1,x0,x2,x1,x0,y2,y1,y0) - -/* Obtain the current rounding mode. */ -#define FP_ROUNDMODE mode - -/* Exception flags. */ -#define FP_EX_INVALID 0x800000 -#define FP_EX_DIVZERO 0x400000 -#define FP_EX_OVERFLOW 0x200000 -#define FP_EX_UNDERFLOW 0x100000 -#define FP_EX_INEXACT 0x080000 - -/* We write the results always */ -#define FP_INHIBIT_RESULTS 0 - -#endif diff --git a/arch/s390/include/asm/sfp-util.h b/arch/s390/include/asm/sfp-util.h deleted file mode 100644 index c8b7cf9d6279..000000000000 --- a/arch/s390/include/asm/sfp-util.h +++ /dev/null @@ -1,67 +0,0 @@ -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/types.h> -#include <asm/byteorder.h> - -#define add_ssaaaa(sh, sl, ah, al, bh, bl) ({ \ - unsigned int __sh = (ah); \ - unsigned int __sl = (al); \ - asm volatile( \ - " alr %1,%3\n" \ - " brc 12,0f\n" \ - " ahi %0,1\n" \ - "0: alr %0,%2" \ - : "+&d" (__sh), "+d" (__sl) \ - : "d" (bh), "d" (bl) : "cc"); \ - (sh) = __sh; \ - (sl) = __sl; \ -}) - -#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({ \ - unsigned int __sh = (ah); \ - unsigned int __sl = (al); \ - asm volatile( \ - " slr %1,%3\n" \ - " brc 3,0f\n" \ - " ahi %0,-1\n" \ - "0: slr %0,%2" \ - : "+&d" (__sh), "+d" (__sl) \ - : "d" (bh), "d" (bl) : "cc"); \ - (sh) = __sh; \ - (sl) = __sl; \ -}) - -/* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */ -#define umul_ppmm(wh, wl, u, v) ({ \ - unsigned int __wh = u; \ - unsigned int __wl = v; \ - asm volatile( \ - " ltr 1,%0\n" \ - " mr 0,%1\n" \ - " jnm 0f\n" \ - " alr 0,%1\n" \ - "0: ltr %1,%1\n" \ - " jnm 1f\n" \ - " alr 0,%0\n" \ - "1: lr %0,0\n" \ - " lr %1,1\n" \ - : "+d" (__wh), "+d" (__wl) \ - : : "0", "1", "cc"); \ - wh = __wh; \ - wl = __wl; \ -}) - -#define udiv_qrnnd(q, r, n1, n0, d) \ - do { unsigned long __n; \ - unsigned int __r, __d; \ - __n = ((unsigned long)(n1) << 32) + n0; \ - __d = (d); \ - (q) = __n / __d; \ - (r) = __n % __d; \ - } while (0) - -#define UDIV_NEEDS_NORMALIZATION 0 - -#define abort() BUG() - -#define __BYTE_ORDER __BIG_ENDIAN diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h index 1c8f33fca356..72df5f2de6b0 100644 --- a/arch/s390/include/asm/sigp.h +++ b/arch/s390/include/asm/sigp.h @@ -37,8 +37,8 @@ #ifndef __ASSEMBLY__ -static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm, - u32 *status) +static inline int ____pcpu_sigp(u16 addr, u8 order, unsigned long parm, + u32 *status) { register unsigned long reg1 asm ("1") = parm; int cc; @@ -48,8 +48,19 @@ static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm, " ipm %0\n" " srl %0,28\n" : "=d" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc"); + *status = reg1; + return cc; +} + +static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm, + u32 *status) +{ + u32 _status; + int cc; + + cc = ____pcpu_sigp(addr, order, parm, &_status); if (status && cc == 1) - *status = reg1; + *status = _status; return cc; } diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h index 63ebf37d3143..7e9e09f600fa 100644 --- a/arch/s390/include/asm/spinlock.h +++ b/arch/s390/include/asm/spinlock.h @@ -10,6 +10,8 @@ #define __ASM_SPINLOCK_H #include <linux/smp.h> +#include <asm/barrier.h> +#include <asm/processor.h> #define SPINLOCK_LOCKVAL (S390_lowcore.spinlock_lockval) @@ -97,6 +99,7 @@ static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) { while (arch_spin_is_locked(lock)) arch_spin_relax(lock); + smp_acquire__after_ctrl_dep(); } /* diff --git a/arch/s390/include/asm/stp.h b/arch/s390/include/asm/stp.h new file mode 100644 index 000000000000..7689727585b2 --- /dev/null +++ b/arch/s390/include/asm/stp.h @@ -0,0 +1,51 @@ +/* + * Copyright IBM Corp. 2006 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + */ +#ifndef __S390_STP_H +#define __S390_STP_H + +/* notifier for syncs */ +extern struct atomic_notifier_head s390_epoch_delta_notifier; + +/* STP interruption parameter */ +struct stp_irq_parm { + unsigned int _pad0 : 14; + unsigned int tsc : 1; /* Timing status change */ + unsigned int lac : 1; /* Link availability change */ + unsigned int tcpc : 1; /* Time control parameter change */ + unsigned int _pad2 : 15; +} __attribute__ ((packed)); + +#define STP_OP_SYNC 1 +#define STP_OP_CTRL 3 + +struct stp_sstpi { + unsigned int rsvd0; + unsigned int rsvd1 : 8; + unsigned int stratum : 8; + unsigned int vbits : 16; + unsigned int leaps : 16; + unsigned int tmd : 4; + unsigned int ctn : 4; + unsigned int rsvd2 : 3; + unsigned int c : 1; + unsigned int tst : 4; + unsigned int tzo : 16; + unsigned int dsto : 16; + unsigned int ctrl : 16; + unsigned int rsvd3 : 16; + unsigned int tto; + unsigned int rsvd4; + unsigned int ctnid[3]; + unsigned int rsvd5; + unsigned int todoff[4]; + unsigned int rsvd6[48]; +} __attribute__ ((packed)); + +/* Functions needed by the machine check handler */ +int stp_sync_check(void); +int stp_island_check(void); +void stp_queue_work(void); + +#endif /* __S390_STP_H */ diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h index dcb6312a0b91..0bb08f341c09 100644 --- a/arch/s390/include/asm/timex.h +++ b/arch/s390/include/asm/timex.h @@ -52,6 +52,70 @@ static inline void store_clock_comparator(__u64 *time) void clock_comparator_work(void); +void __init ptff_init(void); + +extern unsigned char ptff_function_mask[16]; +extern unsigned long lpar_offset; +extern unsigned long initial_leap_seconds; + +/* Function codes for the ptff instruction. */ +#define PTFF_QAF 0x00 /* query available functions */ +#define PTFF_QTO 0x01 /* query tod offset */ +#define PTFF_QSI 0x02 /* query steering information */ +#define PTFF_QUI 0x04 /* query UTC information */ +#define PTFF_ATO 0x40 /* adjust tod offset */ +#define PTFF_STO 0x41 /* set tod offset */ +#define PTFF_SFS 0x42 /* set fine steering rate */ +#define PTFF_SGS 0x43 /* set gross steering rate */ + +/* Query TOD offset result */ +struct ptff_qto { + unsigned long long physical_clock; + unsigned long long tod_offset; + unsigned long long logical_tod_offset; + unsigned long long tod_epoch_difference; +} __packed; + +static inline int ptff_query(unsigned int nr) +{ + unsigned char *ptr; + + ptr = ptff_function_mask + (nr >> 3); + return (*ptr & (0x80 >> (nr & 7))) != 0; +} + +/* Query UTC information result */ +struct ptff_qui { + unsigned int tm : 2; + unsigned int ts : 2; + unsigned int : 28; + unsigned int pad_0x04; + unsigned long leap_event; + short old_leap; + short new_leap; + unsigned int pad_0x14; + unsigned long prt[5]; + unsigned long cst[3]; + unsigned int skew; + unsigned int pad_0x5c[41]; +} __packed; + +static inline int ptff(void *ptff_block, size_t len, unsigned int func) +{ + typedef struct { char _[len]; } addrtype; + register unsigned int reg0 asm("0") = func; + register unsigned long reg1 asm("1") = (unsigned long) ptff_block; + int rc; + + asm volatile( + " .word 0x0104\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (rc), "+m" (*(addrtype *) ptff_block) + : "d" (reg0), "d" (reg1) : "cc"); + return rc; +} + static inline unsigned long long local_tick_disable(void) { unsigned long long old; @@ -105,7 +169,7 @@ static inline cycles_t get_cycles(void) return (cycles_t) get_tod_clock() >> 2; } -int get_sync_clock(unsigned long long *clock); +int get_phys_clock(unsigned long long *clock); void init_cpu_timer(void); unsigned long long monotonic_clock(void); diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h index 7a92e69c50bc..15711de10403 100644 --- a/arch/s390/include/asm/tlb.h +++ b/arch/s390/include/asm/tlb.h @@ -87,10 +87,10 @@ static inline void tlb_finish_mmu(struct mmu_gather *tlb, * tlb_ptep_clear_flush. In both flush modes the tlb for a page cache page * has already been freed, so just do free_page_and_swap_cache. */ -static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page) +static inline bool __tlb_remove_page(struct mmu_gather *tlb, struct page *page) { free_page_and_swap_cache(page); - return 1; /* avoid calling tlb_flush_mmu */ + return false; /* avoid calling tlb_flush_mmu */ } static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page) @@ -98,6 +98,24 @@ static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page) free_page_and_swap_cache(page); } +static inline bool __tlb_remove_page_size(struct mmu_gather *tlb, + struct page *page, int page_size) +{ + return __tlb_remove_page(tlb, page); +} + +static inline bool __tlb_remove_pte_page(struct mmu_gather *tlb, + struct page *page) +{ + return __tlb_remove_page(tlb, page); +} + +static inline void tlb_remove_page_size(struct mmu_gather *tlb, + struct page *page, int page_size) +{ + return tlb_remove_page(tlb, page); +} + /* * pte_free_tlb frees a pte table and clears the CRSTE for the * page table from the tlb. diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h index a2e6ef32e054..1a691ef740cf 100644 --- a/arch/s390/include/asm/tlbflush.h +++ b/arch/s390/include/asm/tlbflush.h @@ -5,6 +5,7 @@ #include <linux/sched.h> #include <asm/processor.h> #include <asm/pgalloc.h> +#include <asm/pgtable.h> /* * Flush all TLB entries on the local CPU. @@ -44,17 +45,9 @@ void smp_ptlb_all(void); */ static inline void __tlb_flush_global(void) { - register unsigned long reg2 asm("2"); - register unsigned long reg3 asm("3"); - register unsigned long reg4 asm("4"); - long dummy; - - dummy = 0; - reg2 = reg3 = 0; - reg4 = ((unsigned long) &dummy) + 1; - asm volatile( - " csp %0,%2" - : : "d" (reg2), "d" (reg3), "d" (reg4), "m" (dummy) : "cc" ); + unsigned int dummy = 0; + + csp(&dummy, 0, 0); } /* @@ -64,7 +57,7 @@ static inline void __tlb_flush_global(void) static inline void __tlb_flush_full(struct mm_struct *mm) { preempt_disable(); - atomic_add(0x10000, &mm->context.attach_count); + atomic_inc(&mm->context.flush_count); if (cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) { /* Local TLB flush */ __tlb_flush_local(); @@ -76,21 +69,19 @@ static inline void __tlb_flush_full(struct mm_struct *mm) cpumask_copy(mm_cpumask(mm), &mm->context.cpu_attach_mask); } - atomic_sub(0x10000, &mm->context.attach_count); + atomic_dec(&mm->context.flush_count); preempt_enable(); } /* - * Flush TLB entries for a specific ASCE on all CPUs. + * Flush TLB entries for a specific ASCE on all CPUs. Should never be used + * when more than one asce (e.g. gmap) ran on this mm. */ static inline void __tlb_flush_asce(struct mm_struct *mm, unsigned long asce) { - int active, count; - preempt_disable(); - active = (mm == current->active_mm) ? 1 : 0; - count = atomic_add_return(0x10000, &mm->context.attach_count); - if (MACHINE_HAS_TLB_LC && (count & 0xffff) <= active && + atomic_inc(&mm->context.flush_count); + if (MACHINE_HAS_TLB_LC && cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) { __tlb_flush_idte_local(asce); } else { @@ -103,7 +94,7 @@ static inline void __tlb_flush_asce(struct mm_struct *mm, unsigned long asce) cpumask_copy(mm_cpumask(mm), &mm->context.cpu_attach_mask); } - atomic_sub(0x10000, &mm->context.attach_count); + atomic_dec(&mm->context.flush_count); preempt_enable(); } diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h index 6b53962e807e..f15f5571ca2b 100644 --- a/arch/s390/include/asm/topology.h +++ b/arch/s390/include/asm/topology.h @@ -14,10 +14,12 @@ struct cpu_topology_s390 { unsigned short core_id; unsigned short socket_id; unsigned short book_id; + unsigned short drawer_id; unsigned short node_id; cpumask_t thread_mask; cpumask_t core_mask; cpumask_t book_mask; + cpumask_t drawer_mask; }; DECLARE_PER_CPU(struct cpu_topology_s390, cpu_topology); @@ -30,6 +32,8 @@ DECLARE_PER_CPU(struct cpu_topology_s390, cpu_topology); #define topology_core_cpumask(cpu) (&per_cpu(cpu_topology, cpu).core_mask) #define topology_book_id(cpu) (per_cpu(cpu_topology, cpu).book_id) #define topology_book_cpumask(cpu) (&per_cpu(cpu_topology, cpu).book_mask) +#define topology_drawer_id(cpu) (per_cpu(cpu_topology, cpu).drawer_id) +#define topology_drawer_cpumask(cpu) (&per_cpu(cpu_topology, cpu).drawer_mask) #define mc_capable() 1 diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index e0900ddf91dd..9b49cf1daa8f 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -151,8 +151,65 @@ unsigned long __must_check __copy_to_user(void __user *to, const void *from, __rc; \ }) -#define __put_user_fn(x, ptr, size) __put_get_user_asm(ptr, x, size, 0x810000UL) -#define __get_user_fn(x, ptr, size) __put_get_user_asm(x, ptr, size, 0x81UL) +static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size) +{ + unsigned long spec = 0x810000UL; + int rc; + + switch (size) { + case 1: + rc = __put_get_user_asm((unsigned char __user *)ptr, + (unsigned char *)x, + size, spec); + break; + case 2: + rc = __put_get_user_asm((unsigned short __user *)ptr, + (unsigned short *)x, + size, spec); + break; + case 4: + rc = __put_get_user_asm((unsigned int __user *)ptr, + (unsigned int *)x, + size, spec); + break; + case 8: + rc = __put_get_user_asm((unsigned long __user *)ptr, + (unsigned long *)x, + size, spec); + break; + }; + return rc; +} + +static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size) +{ + unsigned long spec = 0x81UL; + int rc; + + switch (size) { + case 1: + rc = __put_get_user_asm((unsigned char *)x, + (unsigned char __user *)ptr, + size, spec); + break; + case 2: + rc = __put_get_user_asm((unsigned short *)x, + (unsigned short __user *)ptr, + size, spec); + break; + case 4: + rc = __put_get_user_asm((unsigned int *)x, + (unsigned int __user *)ptr, + size, spec); + break; + case 8: + rc = __put_get_user_asm((unsigned long *)x, + (unsigned long __user *)ptr, + size, spec); + break; + }; + return rc; +} #else /* CONFIG_HAVE_MARCH_Z10_FEATURES */ @@ -191,7 +248,7 @@ static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long s __put_user_bad(); \ break; \ } \ - __pu_err; \ + __builtin_expect(__pu_err, 0); \ }) #define put_user(x, ptr) \ @@ -240,7 +297,7 @@ int __put_user_bad(void) __attribute__((noreturn)); __get_user_bad(); \ break; \ } \ - __gu_err; \ + __builtin_expect(__gu_err, 0); \ }) #define get_user(x, ptr) \ diff --git a/arch/s390/include/uapi/asm/ptrace.h b/arch/s390/include/uapi/asm/ptrace.h index a150f4fabe43..77630c74f13b 100644 --- a/arch/s390/include/uapi/asm/ptrace.h +++ b/arch/s390/include/uapi/asm/ptrace.h @@ -359,9 +359,9 @@ typedef struct per_cr_bits bits; } control_regs; /* - * Use these flags instead of setting em_instruction_fetch - * directly they are used so that single stepping can be - * switched on & off while not affecting other tracing + * The single_step and instruction_fetch bits are obsolete, + * the kernel always sets them to zero. To enable single + * stepping use ptrace(PTRACE_SINGLESTEP) instead. */ unsigned single_step : 1; unsigned instruction_fetch : 1; |