diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/include/asm/setup.h | 3 | ||||
| -rw-r--r-- | arch/s390/include/asm/timex.h | 17 | ||||
| -rw-r--r-- | arch/s390/kernel/early.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/entry64.S | 16 |
4 files changed, 17 insertions, 21 deletions
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index b21e46e5d4b8..7244e1f64126 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -82,7 +82,6 @@ extern unsigned int user_mode; #define MACHINE_FLAG_LPAR (1UL << 12) #define MACHINE_FLAG_SPP (1UL << 13) #define MACHINE_FLAG_TOPOLOGY (1UL << 14) -#define MACHINE_FLAG_STCKF (1UL << 15) #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) @@ -101,7 +100,6 @@ extern unsigned int user_mode; #define MACHINE_HAS_PFMF (0) #define MACHINE_HAS_SPP (0) #define MACHINE_HAS_TOPOLOGY (0) -#define MACHINE_HAS_STCKF (0) #else /* __s390x__ */ #define MACHINE_HAS_IEEE (1) #define MACHINE_HAS_CSP (1) @@ -113,7 +111,6 @@ extern unsigned int user_mode; #define MACHINE_HAS_PFMF (S390_lowcore.machine_flags & MACHINE_FLAG_PFMF) #define MACHINE_HAS_SPP (S390_lowcore.machine_flags & MACHINE_FLAG_SPP) #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) -#define MACHINE_HAS_STCKF (S390_lowcore.machine_flags & MACHINE_FLAG_STCKF) #endif /* __s390x__ */ #define ZFCPDUMP_HSA_SIZE (32UL<<20) diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h index c447a27a7fdb..72eaa8511a4f 100644 --- a/arch/s390/include/asm/timex.h +++ b/arch/s390/include/asm/timex.h @@ -73,11 +73,15 @@ static inline void local_tick_enable(unsigned long long comp) typedef unsigned long long cycles_t; -static inline unsigned long long get_clock (void) +static inline unsigned long long get_clock(void) { unsigned long long clk; +#if defined(CONFIG_64BIT) && !defined(CONFIG_MARCH_Z900) && !defined(CONFIG_MARCH_Z990) + asm volatile(".insn s,0xb27c0000,%0" : "=Q" (clk) : : "cc"); +#else asm volatile("stck %0" : "=Q" (clk) : : "cc"); +#endif return clk; } @@ -86,17 +90,6 @@ static inline void get_clock_ext(char *clk) asm volatile("stcke %0" : "=Q" (*clk) : : "cc"); } -static inline unsigned long long get_clock_fast(void) -{ - unsigned long long clk; - - if (MACHINE_HAS_STCKF) - asm volatile(".insn s,0xb27c0000,%0" : "=Q" (clk) : : "cc"); - else - clk = get_clock(); - return clk; -} - static inline unsigned long long get_clock_xt(void) { unsigned char clk[16]; diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 9475e682727f..d84181f1f5e8 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -374,8 +374,6 @@ static __init void detect_machine_facilities(void) S390_lowcore.machine_flags |= MACHINE_FLAG_MVCOS; if (test_facility(40)) S390_lowcore.machine_flags |= MACHINE_FLAG_SPP; - if (test_facility(25)) - S390_lowcore.machine_flags |= MACHINE_FLAG_STCKF; #endif } diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 3a633af72bae..444fd72e0787 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -148,6 +148,14 @@ _TIF_EXIT_SIE = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING) ssm __LC_RETURN_PSW .endm + .macro STCK savearea +#if defined(CONFIG_64BIT) && !defined(CONFIG_MARCH_Z900) && !defined(CONFIG_MARCH_Z990) + .insn s,0xb27c0000,\savearea # store clock fast +#else + .insn s,0xb2050000,\savearea # store clock +#endif + .endm + .section .kprobes.text, "ax" /* @@ -458,7 +466,7 @@ pgm_svcper: * IO interrupt handler routine */ ENTRY(io_int_handler) - stck __LC_INT_CLOCK + STCK __LC_INT_CLOCK stpt __LC_ASYNC_ENTER_TIMER stmg %r8,%r15,__LC_SAVE_AREA_ASYNC lg %r10,__LC_LAST_BREAK @@ -604,7 +612,7 @@ io_notify_resume: * External interrupt handler routine */ ENTRY(ext_int_handler) - stck __LC_INT_CLOCK + STCK __LC_INT_CLOCK stpt __LC_ASYNC_ENTER_TIMER stmg %r8,%r15,__LC_SAVE_AREA_ASYNC lg %r10,__LC_LAST_BREAK @@ -639,7 +647,7 @@ ENTRY(psw_idle) larl %r1,psw_idle_lpsw+4 stg %r1,__SF_EMPTY+8(%r15) larl %r1,.Lvtimer_max - stck __IDLE_ENTER(%r2) + STCK __IDLE_ENTER(%r2) ltr %r5,%r5 stpt __VQ_IDLE_ENTER(%r3) jz psw_idle_lpsw @@ -655,7 +663,7 @@ __critical_end: * Machine check handler routines */ ENTRY(mcck_int_handler) - stck __LC_MCCK_CLOCK + STCK __LC_MCCK_CLOCK la %r1,4095 # revalidate r1 spt __LC_CPU_TIMER_SAVE_AREA-4095(%r1) # revalidate cpu timer lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs |