diff options
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/asm-offsets.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/early.c | 4 | ||||
| -rw-r--r-- | arch/s390/kernel/entry64.S | 26 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 3 |
4 files changed, 24 insertions, 11 deletions
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index 816d81f..44a4336 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -131,6 +131,8 @@ int main(void) DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock)); DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags)); DEFINE(__LC_FTRACE_FUNC, offsetof(struct _lowcore, ftrace_func)); + DEFINE(__LC_SIE_HOOK, offsetof(struct _lowcore, sie_hook)); + DEFINE(__LC_CMF_HPP, offsetof(struct _lowcore, cmf_hpp)); DEFINE(__LC_IRB, offsetof(struct _lowcore, irb)); DEFINE(__LC_CPU_TIMER_SAVE_AREA, offsetof(struct _lowcore, cpu_timer_save_area)); DEFINE(__LC_CLOCK_COMP_SAVE_AREA, offsetof(struct _lowcore, clock_comp_save_area)); diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 2d92c2c..c00856a 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -356,6 +356,7 @@ static __init void detect_machine_facilities(void) { #ifdef CONFIG_64BIT unsigned int facilities; + unsigned long long facility_bits; facilities = stfl(); if (facilities & (1 << 28)) @@ -364,6 +365,9 @@ static __init void detect_machine_facilities(void) S390_lowcore.machine_flags |= MACHINE_FLAG_PFMF; if (facilities & (1 << 4)) S390_lowcore.machine_flags |= MACHINE_FLAG_MVCOS; + if ((stfle(&facility_bits, 1) > 0) && + (facility_bits & (1ULL << (63 - 40)))) + S390_lowcore.machine_flags |= MACHINE_FLAG_SPP; #endif } diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 6536f5c..829b759 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -2,7 +2,7 @@ * arch/s390/kernel/entry64.S * S390 low-level entry points. * - * Copyright (C) IBM Corp. 1999,2006 + * Copyright (C) IBM Corp. 1999,2010 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), * Hartmut Penner (hp@de.ibm.com), * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com), @@ -59,6 +59,16 @@ _TIF_SYSCALL = (_TIF_SYSCALL_TRACE>>8 | _TIF_SYSCALL_AUDIT>>8 | \ #define BASED(name) name-system_call(%r13) + .macro HANDLE_SIE_INTERCEPT +#if defined(CONFIG_KVM) || defined(CONFIG_KVM_MODULE) + lg %r3,__LC_SIE_HOOK + ltgr %r3,%r3 + jz 0f + basr %r14,%r3 + 0: +#endif + .endm + #ifdef CONFIG_TRACE_IRQFLAGS .macro TRACE_IRQS_ON basr %r2,%r0 @@ -466,6 +476,7 @@ pgm_check_handler: UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER pgm_no_vtime: + HANDLE_SIE_INTERCEPT TRACE_IRQS_CHECK_OFF lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct mvc SP_ARGS(8,%r15),__LC_LAST_BREAK @@ -507,6 +518,7 @@ pgm_per_std: UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER pgm_no_vtime2: + HANDLE_SIE_INTERCEPT TRACE_IRQS_CHECK_OFF lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct lg %r1,__TI_task(%r9) @@ -570,6 +582,7 @@ io_int_handler: mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER io_no_vtime: lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct + HANDLE_SIE_INTERCEPT TRACE_IRQS_OFF la %r2,SP_PTREGS(%r15) # address of register-save area brasl %r14,do_IRQ # call standard irq handler @@ -595,15 +608,6 @@ io_done: io_work: tm SP_PSW+1(%r15),0x01 # returning to user ? jo io_work_user # yes -> do resched & signal -#if defined(CONFIG_KVM) || defined(CONFIG_KVM_MODULE) - lg %r2,SP_PSW+8(%r15) # check if current instruction is SIE - lh %r1,0(%r2) - chi %r1,-19948 # signed 16 bit compare with 0xb214 - jne 0f # no -> leave PSW alone - aghi %r2,4 # yes-> add 4 bytes to leave SIE - stg %r2,SP_PSW+8(%r15) -0: -#endif #ifdef CONFIG_PREEMPT # check for preemptive scheduling icm %r0,15,__TI_precount(%r9) @@ -712,6 +716,7 @@ ext_int_handler: mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER ext_no_vtime: lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct + HANDLE_SIE_INTERCEPT TRACE_IRQS_OFF la %r2,SP_PTREGS(%r15) # address of register-save area llgh %r3,__LC_EXT_INT_CODE # get interruption code @@ -786,6 +791,7 @@ mcck_no_vtime: stosm __SF_EMPTY(%r15),0x04 # turn dat on tm __TI_flags+7(%r9),_TIF_MCCK_PENDING jno mcck_return + HANDLE_SIE_INTERCEPT TRACE_IRQS_OFF brasl %r14,s390_handle_mcck TRACE_IRQS_ON diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 5987524..7d89324 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -2,7 +2,7 @@ * arch/s390/kernel/setup.c * * S390 version - * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Copyright (C) IBM Corp. 1999,2010 * Author(s): Hartmut Penner (hp@de.ibm.com), * Martin Schwidefsky (schwidefsky@de.ibm.com) * @@ -401,6 +401,7 @@ setup_lowcore(void) lc->io_new_psw.mask = psw_kernel_bits; lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler; lc->clock_comparator = -1ULL; + lc->cmf_hpp = -1ULL; lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE; lc->async_stack = (unsigned long) __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0) + ASYNC_SIZE; |