From 3eb77d5116d78cce5b9fa9eb19d012bc636116b6 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Mon, 17 Nov 2008 14:50:35 +0100 Subject: KVM: s390: Fix problem state handling in guest sigp handler We can get an exit for instructions starting with 0xae, even if the guest is in userspace. Lets make sure, that the signal processor handler is only called in guest supervisor mode. Otherwise, send a program check. Signed-off-by: Christian Borntraeger Signed-off-by: Avi Kivity --- arch/s390/kvm/sigp.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/s390') diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c index 170392687ce..2a01b9e0280 100644 --- a/arch/s390/kvm/sigp.c +++ b/arch/s390/kvm/sigp.c @@ -237,6 +237,11 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu) u8 order_code; int rc; + /* sigp in userspace can exit */ + if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) + return kvm_s390_inject_program_int(vcpu, + PGM_PRIVILEGED_OPERATION); + order_code = disp2; if (base2) order_code += vcpu->arch.guest_gprs[base2]; -- cgit v1.2.3 From 59da21398e680e8100625d689c8bebee6a139e93 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Thu, 27 Nov 2008 11:05:55 +0100 Subject: [S390] fix system call parameter functions. syscall_get_nr() currently returns a valid result only if the call chain of the traced process includes do_syscall_trace_enter(). But collect_syscall() can be called for any sleeping task, the result of syscall_get_nr() in general is completely bogus. To make syscall_get_nr() work for any sleeping task the traps field in pt_regs is replace with svcnr - the system call number the process is executing. If svcnr == 0 the process is not on a system call path. The syscall_get_arguments and syscall_set_arguments use regs->gprs[2] for the first system call parameter. This is incorrect since gprs[2] may have been overwritten with the system call number if the call chain includes do_syscall_trace_enter. Use regs->orig_gprs2 instead. Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/ptrace.h | 2 +- arch/s390/include/asm/syscall.h | 28 ++++++++++++++++------------ arch/s390/kernel/asm-offsets.c | 2 +- arch/s390/kernel/compat_signal.c | 2 +- arch/s390/kernel/entry.S | 21 +++++++++++---------- arch/s390/kernel/entry64.S | 23 ++++++++++------------- arch/s390/kernel/ptrace.c | 2 +- arch/s390/kernel/signal.c | 6 +++--- 8 files changed, 44 insertions(+), 42 deletions(-) (limited to 'arch/s390') diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index a7226f8143f..fb0ca4796d3 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -321,8 +321,8 @@ struct pt_regs psw_t psw; unsigned long gprs[NUM_GPRS]; unsigned long orig_gpr2; + unsigned short svcnr; unsigned short ilc; - unsigned short trap; }; #endif diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h index 6e623971fbb..2429b87eb28 100644 --- a/arch/s390/include/asm/syscall.h +++ b/arch/s390/include/asm/syscall.h @@ -17,9 +17,7 @@ static inline long syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { - if (regs->trap != __LC_SVC_OLD_PSW) - return -1; - return regs->gprs[2]; + return regs->svcnr ? regs->svcnr : -1; } static inline void syscall_rollback(struct task_struct *task, @@ -52,18 +50,20 @@ static inline void syscall_get_arguments(struct task_struct *task, unsigned int i, unsigned int n, unsigned long *args) { + unsigned long mask = -1UL; + BUG_ON(i + n > 6); #ifdef CONFIG_COMPAT - if (test_tsk_thread_flag(task, TIF_31BIT)) { - if (i + n == 6) - args[--n] = (u32) regs->args[0]; - while (n-- > 0) - args[n] = (u32) regs->gprs[2 + i + n]; - } + if (test_tsk_thread_flag(task, TIF_31BIT)) + mask = 0xffffffff; #endif if (i + n == 6) - args[--n] = regs->args[0]; - memcpy(args, ®s->gprs[2 + i], n * sizeof(args[0])); + args[--n] = regs->args[0] & mask; + while (n-- > 0) + if (i + n > 0) + args[n] = regs->gprs[2 + i + n] & mask; + if (i == 0) + args[0] = regs->orig_gpr2 & mask; } static inline void syscall_set_arguments(struct task_struct *task, @@ -74,7 +74,11 @@ static inline void syscall_set_arguments(struct task_struct *task, BUG_ON(i + n > 6); if (i + n == 6) regs->args[0] = args[--n]; - memcpy(®s->gprs[2 + i], args, n * sizeof(args[0])); + while (n-- > 0) + if (i + n > 0) + regs->gprs[2 + i + n] = args[n]; + if (i == 0) + regs->orig_gpr2 = args[0]; } #endif /* _ASM_SYSCALL_H */ diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index fa28ecae636..3d144e6020c 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -32,7 +32,7 @@ int main(void) DEFINE(__PT_GPRS, offsetof(struct pt_regs, gprs)); DEFINE(__PT_ORIG_GPR2, offsetof(struct pt_regs, orig_gpr2)); DEFINE(__PT_ILC, offsetof(struct pt_regs, ilc)); - DEFINE(__PT_TRAP, offsetof(struct pt_regs, trap)); + DEFINE(__PT_SVCNR, offsetof(struct pt_regs, svcnr)); DEFINE(__PT_SIZE, sizeof(struct pt_regs)); BLANK(); DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain)); diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index c7f02e777af..b537cb0e9b5 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -340,7 +340,7 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs) return err; restore_fp_regs(¤t->thread.fp_regs); - regs->trap = -1; /* disable syscall checks */ + regs->svcnr = 0; /* disable syscall checks */ return 0; } diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 08844fc24a2..198ea18a534 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -46,7 +46,7 @@ SP_R14 = STACK_FRAME_OVERHEAD + __PT_GPRS + 56 SP_R15 = STACK_FRAME_OVERHEAD + __PT_GPRS + 60 SP_ORIG_R2 = STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2 SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC -SP_TRAP = STACK_FRAME_OVERHEAD + __PT_TRAP +SP_SVCNR = STACK_FRAME_OVERHEAD + __PT_SVCNR SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE _TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \ @@ -183,11 +183,10 @@ STACK_SIZE = 1 << STACK_SHIFT .macro CREATE_STACK_FRAME psworg,savearea s %r15,BASED(.Lc_spsize) # make room for registers & psw mvc SP_PSW(8,%r15),0(%r12) # move user PSW to stack - la %r12,\psworg st %r2,SP_ORIG_R2(%r15) # store original content of gpr 2 - icm %r12,12,__LC_SVC_ILC + icm %r12,3,__LC_SVC_ILC stm %r0,%r11,SP_R0(%r15) # store gprs %r0-%r11 to kernel stack - st %r12,SP_ILC(%r15) + st %r12,SP_SVCNR(%r15) mvc SP_R12(16,%r15),\savearea # move %r12-%r15 to stack la %r12,0 st %r12,__SF_BACKCHAIN(%r15) # clear back chain @@ -264,16 +263,17 @@ sysc_update: #endif sysc_do_svc: l %r9,__LC_THREAD_INFO # load pointer to thread_info struct - sla %r7,2 # *4 and test for svc 0 + ltr %r7,%r7 # test for svc 0 bnz BASED(sysc_nr_ok) # svc number > 0 # svc 0: system call number in %r1 cl %r1,BASED(.Lnr_syscalls) bnl BASED(sysc_nr_ok) lr %r7,%r1 # copy svc number to %r7 - sla %r7,2 # *4 sysc_nr_ok: mvc SP_ARGS(4,%r15),SP_R7(%r15) sysc_do_restart: + sth %r7,SP_SVCNR(%r15) + sll %r7,2 # svc number *4 l %r8,BASED(.Lsysc_table) tm __TI_flags+3(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT) l %r8,0(%r7,%r8) # get system call addr. @@ -376,7 +376,6 @@ sysc_notify_resume: sysc_restart: ni __TI_flags+3(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC l %r7,SP_R2(%r15) # load new svc number - sla %r7,2 mvc SP_R2(4,%r15),SP_ORIG_R2(%r15) # restore first argument lm %r2,%r6,SP_R2(%r15) # load svc arguments b BASED(sysc_do_restart) # restart svc @@ -386,7 +385,8 @@ sysc_restart: # sysc_singlestep: ni __TI_flags+3(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP - mvi SP_TRAP+1(%r15),0x28 # set trap indication to pgm check + mvi SP_SVCNR(%r15),0xff # set trap indication to pgm check + mvi SP_SVCNR+1(%r15),0xff la %r2,SP_PTREGS(%r15) # address of register-save area l %r1,BASED(.Lhandle_per) # load adr. of per handler la %r14,BASED(sysc_return) # load adr. of system return @@ -407,7 +407,7 @@ sysc_tracesys: bnl BASED(sysc_tracenogo) l %r8,BASED(.Lsysc_table) lr %r7,%r2 - sll %r7,2 # *4 + sll %r7,2 # svc number *4 l %r8,0(%r7,%r8) sysc_tracego: lm %r3,%r6,SP_R3(%r15) @@ -586,7 +586,8 @@ pgm_svcper: # per was called from kernel, must be kprobes # kernel_per: - mvi SP_TRAP+1(%r15),0x28 # set trap indication to pgm check + mvi SP_SVCNR(%r15),0xff # set trap indication to pgm check + mvi SP_SVCNR+1(%r15),0xff la %r2,SP_PTREGS(%r15) # address of register-save area l %r1,BASED(.Lhandle_per) # load adr. of per handler la %r14,BASED(sysc_restore)# load adr. of system return diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 41aca06682a..89c121ae633 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -46,7 +46,7 @@ SP_R14 = STACK_FRAME_OVERHEAD + __PT_GPRS + 112 SP_R15 = STACK_FRAME_OVERHEAD + __PT_GPRS + 120 SP_ORIG_R2 = STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2 SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC -SP_TRAP = STACK_FRAME_OVERHEAD + __PT_TRAP +SP_SVCNR = STACK_FRAME_OVERHEAD + __PT_SVCNR SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER @@ -171,11 +171,10 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \ .macro CREATE_STACK_FRAME psworg,savearea aghi %r15,-SP_SIZE # make room for registers & psw mvc SP_PSW(16,%r15),0(%r12) # move user PSW to stack - la %r12,\psworg stg %r2,SP_ORIG_R2(%r15) # store original content of gpr 2 - icm %r12,12,__LC_SVC_ILC + icm %r12,3,__LC_SVC_ILC stmg %r0,%r11,SP_R0(%r15) # store gprs %r0-%r11 to kernel stack - st %r12,SP_ILC(%r15) + st %r12,SP_SVCNR(%r15) mvc SP_R12(32,%r15),\savearea # move %r12-%r15 to stack la %r12,0 stg %r12,__SF_BACKCHAIN(%r15) @@ -250,16 +249,17 @@ sysc_update: #endif sysc_do_svc: lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct - slag %r7,%r7,2 # *4 and test for svc 0 + ltgr %r7,%r7 # test for svc 0 jnz sysc_nr_ok # svc 0: system call number in %r1 cl %r1,BASED(.Lnr_syscalls) jnl sysc_nr_ok lgfr %r7,%r1 # clear high word in r1 - slag %r7,%r7,2 # svc 0: system call number in %r1 sysc_nr_ok: mvc SP_ARGS(8,%r15),SP_R7(%r15) sysc_do_restart: + sth %r7,SP_SVCNR(%r15) + sllg %r7,%r7,2 # svc number * 4 larl %r10,sys_call_table #ifdef CONFIG_COMPAT tm __TI_flags+5(%r9),(_TIF_31BIT>>16) # running in 31 bit mode ? @@ -363,7 +363,6 @@ sysc_notify_resume: sysc_restart: ni __TI_flags+7(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC lg %r7,SP_R2(%r15) # load new svc number - slag %r7,%r7,2 # *4 mvc SP_R2(8,%r15),SP_ORIG_R2(%r15) # restore first argument lmg %r2,%r6,SP_R2(%r15) # load svc arguments j sysc_do_restart # restart svc @@ -372,9 +371,8 @@ sysc_restart: # _TIF_SINGLE_STEP is set, call do_single_step # sysc_singlestep: - ni __TI_flags+7(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP - lhi %r0,__LC_PGM_OLD_PSW - sth %r0,SP_TRAP(%r15) # set trap indication to pgm check + ni __TI_flags+7(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP + xc SP_SVCNR(2,%r15),SP_SVCNR(%r15) # clear svc number la %r2,SP_PTREGS(%r15) # address of register-save area larl %r14,sysc_return # load adr. of system return jg do_single_step # branch to do_sigtrap @@ -392,7 +390,7 @@ sysc_tracesys: lghi %r0,NR_syscalls clgr %r0,%r2 jnh sysc_tracenogo - slag %r7,%r2,2 # *4 + sllg %r7,%r2,2 # svc number *4 lgf %r8,0(%r7,%r10) sysc_tracego: lmg %r3,%r6,SP_R3(%r15) @@ -567,8 +565,7 @@ pgm_svcper: # per was called from kernel, must be kprobes # kernel_per: - lhi %r0,__LC_PGM_OLD_PSW - sth %r0,SP_TRAP(%r15) # set trap indication to pgm check + xc SP_SVCNR(2,%r15),SP_SVCNR(%r15) # clear svc number la %r2,SP_PTREGS(%r15) # address of register-save area larl %r14,sysc_restore # load adr. of system ret, no work jg do_single_step # branch to do_single_step diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 1f31be1ecc4..38ff2bce120 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -657,7 +657,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) * debugger stored an invalid system call number. Skip * the system call and the system call restart handling. */ - regs->trap = -1; + regs->svcnr = 0; ret = -1; } diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index 4f7fc3059a8..8e6812a2267 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -160,7 +160,7 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs) current->thread.fp_regs.fpc &= FPC_VALID_MASK; restore_fp_regs(¤t->thread.fp_regs); - regs->trap = -1; /* disable syscall checks */ + regs->svcnr = 0; /* disable syscall checks */ return 0; } @@ -445,7 +445,7 @@ void do_signal(struct pt_regs *regs) oldset = ¤t->blocked; /* Are we from a system call? */ - if (regs->trap == __LC_SVC_OLD_PSW) { + if (regs->svcnr) { continue_addr = regs->psw.addr; restart_addr = continue_addr - regs->ilc; retval = regs->gprs[2]; @@ -462,7 +462,7 @@ void do_signal(struct pt_regs *regs) case -ERESTART_RESTARTBLOCK: regs->gprs[2] = -EINTR; } - regs->trap = -1; /* Don't deal with this again. */ + regs->svcnr = 0; /* Don't deal with this again. */ } /* Get signal to deliver. When running under ptrace, at this point -- cgit v1.2.3 From 8107d8296baff899db89c1716fe8af69a5b19d18 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Thu, 27 Nov 2008 11:05:56 +0100 Subject: [S390] fix/cleanup sched_clock CONFIG_PRINTK_TIME reveals that sched_clock has a wrong offset during boot: .. [ 0.000000] Movable zone: 0 pages used for memmap [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 775679 [ 0.000000] Kernel command line: dasd=4b6c root=/dev/dasda1 ro noinitrd [ 0.000000] PID hash table entries: 4096 (order: 12, 32768 bytes) [6920575.975232] console [ttyS0] enabled [6920575.987586] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) [6920575.991404] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes) .. The s390 implementation of sched_clock uses the store clock instruction and subtracts jiffies_timer_cc. jiffies_timer_cc is a local variable in arch/s390/kernel/time.c and only used for sched_clock and monotonic clock. For historical reasons there is an offset on that value. With todays code this offset is unnecessary. By removing that offset we can get a sched_clock which returns the nanoseconds after time_init. This improves CONFIG_PRINTK_TIME. Since sched_clock is the only user, I have also renamed jiffies_timer_cc to sched_clock_base_cc. In addition, the local variable init_timer_cc is redundant and can be romved as well. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/time.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'arch/s390') diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index b94e9e3b694..eccefbbff88 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -59,7 +59,7 @@ static ext_int_info_t ext_int_info_cc; static ext_int_info_t ext_int_etr_cc; -static u64 jiffies_timer_cc; +static u64 sched_clock_base_cc; static DEFINE_PER_CPU(struct clock_event_device, comparators); @@ -68,7 +68,7 @@ static DEFINE_PER_CPU(struct clock_event_device, comparators); */ unsigned long long sched_clock(void) { - return ((get_clock_xt() - jiffies_timer_cc) * 125) >> 9; + return ((get_clock_xt() - sched_clock_base_cc) * 125) >> 9; } /* @@ -229,13 +229,10 @@ static struct clocksource clocksource_tod = { */ void __init time_init(void) { - u64 init_timer_cc; - - init_timer_cc = reset_tod_clock(); - jiffies_timer_cc = init_timer_cc - jiffies_64 * CLK_TICKS_PER_JIFFY; + sched_clock_base_cc = reset_tod_clock(); /* set xtime */ - tod_to_timeval(init_timer_cc - TOD_UNIX_EPOCH, &xtime); + tod_to_timeval(sched_clock_base_cc - TOD_UNIX_EPOCH, &xtime); set_normalized_timespec(&wall_to_monotonic, -xtime.tv_sec, -xtime.tv_nsec); @@ -289,7 +286,7 @@ static unsigned long long adjust_time(unsigned long long old, delta = -delta; adjust.offset = -ticks * (1000000 / HZ); } - jiffies_timer_cc += delta; + sched_clock_base_cc += delta; if (adjust.offset != 0) { printk(KERN_NOTICE "etr: time adjusted by %li micro-seconds\n", adjust.offset); -- cgit v1.2.3 From 2944a5c971c12766e2438ea407ec3567949c32b7 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Thu, 27 Nov 2008 11:05:57 +0100 Subject: [S390] pgtable.h: Fix oops in unmap_vmas for KVM processes When running several kvm processes with lots of memory overcommitment, we have seen an oops during process shutdown: ------------[ cut here ]------------ Kernel BUG at 0000000000193434 [verbose debug info unavailable] addressing exception: 0005 [#1] PREEMPT SMP Modules linked in: kvm sunrpc qeth_l2 dm_mod qeth ccwgroup CPU: 10 Not tainted 2.6.28-rc4-kvm-bigiron-00521-g0ccca08-dirty #8 Process kuli (pid: 14460, task: 0000000149822338, ksp: 0000000024f57650) Krnl PSW : 0704e00180000000 0000000000193434 (unmap_vmas+0x884/0xf10) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 EA:3 Krnl GPRS: 0000000000000002 0000000000000000 000000051008d000 000003e05e6034e0 00000000001933f6 00000000000001e9 0000000407259e0a 00000002be88c400 00000200001c1000 0000000407259608 0000000407259e08 0000000024f577f0 0000000407259e09 0000000000445fa8 00000000001933f6 0000000024f577f0 Krnl Code: 0000000000193426: eb22000c000d sllg %r2,%r2,12 000000000019342c: a7180000 lhi %r1,0 0000000000193430: b2290012 iske %r1,%r2 >0000000000193434: a7110002 tmll %r1,2 0000000000193438: a7840006 brc 8,193444 000000000019343c: 9602c000 oi 0(%r12),2 0000000000193440: 96806000 oi 0(%r6),128 0000000000193444: a7110004 tmll %r1,4 Call Trace: ([<00000000001933f6>] unmap_vmas+0x846/0xf10) [<0000000000199680>] exit_mmap+0x210/0x458 [<000000000012a8f8>] mmput+0x54/0xfc [<000000000012f714>] exit_mm+0x134/0x144 [<000000000013120c>] do_exit+0x240/0x878 [<00000000001318dc>] do_group_exit+0x98/0xc8 [<000000000013e6b0>] get_signal_to_deliver+0x30c/0x358 [<000000000010bee0>] do_signal+0xec/0x860 [<0000000000112e30>] sysc_sigpending+0xe/0x22 [<000002000013198a>] 0x2000013198a INFO: lockdep is turned off. Last Breaking-Event-Address: [<00000000001a68d0>] free_swap_and_cache+0x1a0/0x1a4 <4>---[ end trace bc19f1d51ac9db7c ]--- The faulting instruction is the storage key operation (iske) in ptep_rcp_copy (called by pte_clear, called by unmap_vmas). iske reads dirty and reference bit information for a physical page and requires a valid physical address. Since we are in pte_clear, we cannot rely on the pte containing a valid address. Fortunately we dont need these information in pte_clear - after all there is no mapping. The best fix is to remove the needless call to ptep_rcp_copy that contains the iske. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/pgtable.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/s390') diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 7fc76133b3e..5caddd4f7be 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -679,8 +679,6 @@ static inline void pmd_clear(pmd_t *pmd) static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - if (mm->context.has_pgste) - ptep_rcp_copy(ptep); pte_val(*ptep) = _PAGE_TYPE_EMPTY; if (mm->context.noexec) pte_val(ptep[PTRS_PER_PTE]) = _PAGE_TYPE_EMPTY; -- cgit v1.2.3 From 0778dc3a624b48cf80072b04405cacd1ad4079be Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Thu, 27 Nov 2008 11:05:58 +0100 Subject: [S390] Fix alignment of initial kernel stack. We need an alignment of 16384 bytes for the initial kernel stack if the kernel is configured for 16384 bytes stacks but the linker script currently guarantees only an alignment of 8192 bytes. So fix this and simply use THREAD_SIZE as alignment value which will always do the right thing. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/init_task.c | 2 +- arch/s390/kernel/vmlinux.lds.S | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'arch/s390') diff --git a/arch/s390/kernel/init_task.c b/arch/s390/kernel/init_task.c index 7ad00396925..e8071684361 100644 --- a/arch/s390/kernel/init_task.c +++ b/arch/s390/kernel/init_task.c @@ -26,7 +26,7 @@ EXPORT_SYMBOL(init_mm); /* * Initial thread structure. * - * We need to make sure that this is 8192-byte aligned due to the + * We need to make sure that this is THREAD_SIZE aligned due to the * way process stacks are handled. This is done by having a special * "init_task" linker map entry.. */ diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index 607bd67a18c..d796d05c9c0 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -2,6 +2,7 @@ * Written by Martin Schwidefsky (schwidefsky@de.ibm.com) */ +#include #include #include @@ -86,7 +87,7 @@ SECTIONS } _edata = .; /* End of data section */ - . = ALIGN(2 * PAGE_SIZE); /* init_task */ + . = ALIGN(THREAD_SIZE); /* init_task */ .data.init_task : { *(.data.init_task) } -- cgit v1.2.3 From abd942194dcba2fa9d24d547b8acd4ef052eaf73 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Thu, 27 Nov 2008 11:05:59 +0100 Subject: [S390] Update default configuration. Signed-off-by: Martin Schwidefsky --- arch/s390/defconfig | 74 ++++++++++++++++++++++++++++++++++++----------------- 1 file changed, 51 insertions(+), 23 deletions(-) (limited to 'arch/s390') diff --git a/arch/s390/defconfig b/arch/s390/defconfig index 9b0bc2c9fba..a0e748da990 100644 --- a/arch/s390/defconfig +++ b/arch/s390/defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.27-rc4 -# Thu Aug 21 19:43:29 2008 +# Linux kernel version: 2.6.28-rc6 +# Thu Nov 27 11:00:49 2008 # CONFIG_SCHED_MC=y CONFIG_MMU=y @@ -45,6 +45,7 @@ CONFIG_LOG_BUF_SHIFT=17 CONFIG_CGROUPS=y # CONFIG_CGROUP_DEBUG is not set CONFIG_CGROUP_NS=y +# CONFIG_CGROUP_FREEZER is not set # CONFIG_CGROUP_DEVICE is not set # CONFIG_CPUSETS is not set CONFIG_GROUP_SCHED=y @@ -84,6 +85,7 @@ CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y +CONFIG_AIO=y CONFIG_VM_EVENT_COUNTERS=y CONFIG_SLAB=y # CONFIG_SLUB is not set @@ -92,16 +94,10 @@ CONFIG_SLAB=y # CONFIG_MARKERS is not set CONFIG_HAVE_OPROFILE=y CONFIG_KPROBES=y -# CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is not set CONFIG_KRETPROBES=y -# CONFIG_HAVE_IOREMAP_PROT is not set CONFIG_HAVE_KPROBES=y CONFIG_HAVE_KRETPROBES=y -# CONFIG_HAVE_ARCH_TRACEHOOK is not set -# CONFIG_HAVE_DMA_ATTRS is not set -# CONFIG_USE_GENERIC_SMP_HELPERS is not set -# CONFIG_HAVE_CLK is not set -CONFIG_PROC_PAGE_MONITOR=y +CONFIG_HAVE_ARCH_TRACEHOOK=y # CONFIG_HAVE_GENERIC_DMA_COHERENT is not set CONFIG_SLABINFO=y CONFIG_RT_MUTEXES=y @@ -135,6 +131,7 @@ CONFIG_DEFAULT_DEADLINE=y CONFIG_DEFAULT_IOSCHED="deadline" CONFIG_PREEMPT_NOTIFIERS=y CONFIG_CLASSIC_RCU=y +# CONFIG_FREEZER is not set # # Base setup @@ -189,7 +186,6 @@ CONFIG_SELECT_MEMORY_MODEL=y CONFIG_SPARSEMEM_MANUAL=y CONFIG_SPARSEMEM=y CONFIG_HAVE_MEMORY_PRESENT=y -# CONFIG_SPARSEMEM_STATIC is not set CONFIG_SPARSEMEM_EXTREME=y CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y CONFIG_SPARSEMEM_VMEMMAP=y @@ -200,9 +196,11 @@ CONFIG_PAGEFLAGS_EXTENDED=y CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_MIGRATION=y CONFIG_RESOURCES_64BIT=y +CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_ZONE_DMA_FLAG=1 CONFIG_BOUNCE=y CONFIG_VIRT_TO_BUS=y +CONFIG_UNEVICTABLE_LRU=y # # I/O subsystem configuration @@ -220,6 +218,8 @@ CONFIG_IPL=y CONFIG_IPL_VM=y CONFIG_BINFMT_ELF=y CONFIG_COMPAT_BINFMT_ELF=y +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +# CONFIG_HAVE_AOUT is not set CONFIG_BINFMT_MISC=m CONFIG_FORCE_MAX_ZONEORDER=9 # CONFIG_PROCESS_DEBUG is not set @@ -255,7 +255,7 @@ CONFIG_XFRM=y # CONFIG_XFRM_STATISTICS is not set CONFIG_NET_KEY=y # CONFIG_NET_KEY_MIGRATE is not set -CONFIG_IUCV=m +CONFIG_IUCV=y CONFIG_AFIUCV=m CONFIG_INET=y CONFIG_IP_MULTICAST=y @@ -282,7 +282,6 @@ CONFIG_INET_TCP_DIAG=y CONFIG_TCP_CONG_CUBIC=y CONFIG_DEFAULT_TCP_CONG="cubic" # CONFIG_TCP_MD5SIG is not set -# CONFIG_IP_VS is not set CONFIG_IPV6=y # CONFIG_IPV6_PRIVACY is not set # CONFIG_IPV6_ROUTER_PREF is not set @@ -331,10 +330,12 @@ CONFIG_NF_CONNTRACK=m # CONFIG_NF_CONNTRACK_TFTP is not set # CONFIG_NF_CT_NETLINK is not set # CONFIG_NETFILTER_XTABLES is not set +# CONFIG_IP_VS is not set # # IP: Netfilter Configuration # +# CONFIG_NF_DEFRAG_IPV4 is not set # CONFIG_NF_CONNTRACK_IPV4 is not set # CONFIG_IP_NF_QUEUE is not set # CONFIG_IP_NF_IPTABLES is not set @@ -374,6 +375,7 @@ CONFIG_NET_SCH_CBQ=m # CONFIG_NET_SCH_HTB is not set # CONFIG_NET_SCH_HFSC is not set CONFIG_NET_SCH_PRIO=m +CONFIG_NET_SCH_MULTIQ=y CONFIG_NET_SCH_RED=m CONFIG_NET_SCH_SFQ=m CONFIG_NET_SCH_TEQL=m @@ -406,6 +408,7 @@ CONFIG_NET_ACT_POLICE=y CONFIG_NET_ACT_NAT=m # CONFIG_NET_ACT_PEDIT is not set # CONFIG_NET_ACT_SIMP is not set +# CONFIG_NET_ACT_SKBEDIT is not set # CONFIG_NET_CLS_IND is not set CONFIG_NET_SCH_FIFO=y @@ -424,6 +427,7 @@ CONFIG_CAN_BCM=m CONFIG_CAN_VCAN=m # CONFIG_CAN_DEBUG_DEVICES is not set # CONFIG_AF_RXRPC is not set +# CONFIG_PHONET is not set # CONFIG_RFKILL is not set # CONFIG_NET_9P is not set # CONFIG_PCMCIA is not set @@ -473,7 +477,7 @@ CONFIG_VIRTIO_BLK=m CONFIG_MISC_DEVICES=y # CONFIG_EEPROM_93CX6 is not set # CONFIG_ENCLOSURE_SERVICES is not set -# CONFIG_HAVE_IDE is not set +# CONFIG_C2PORT is not set # # SCSI device support @@ -525,6 +529,7 @@ CONFIG_SCSI_DH_EMC=m CONFIG_SCSI_DH_ALUA=m CONFIG_MD=y CONFIG_BLK_DEV_MD=y +CONFIG_MD_AUTODETECT=y CONFIG_MD_LINEAR=m CONFIG_MD_RAID0=m CONFIG_MD_RAID1=m @@ -555,6 +560,9 @@ CONFIG_NET_ETHERNET=y # CONFIG_IBM_NEW_EMAC_RGMII is not set # CONFIG_IBM_NEW_EMAC_TAH is not set # CONFIG_IBM_NEW_EMAC_EMAC4 is not set +# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set +# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set +# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set CONFIG_NETDEV_1000=y CONFIG_NETDEV_10000=y # CONFIG_TR is not set @@ -632,13 +640,12 @@ CONFIG_S390_VMUR=m # CONFIG_THERMAL is not set # CONFIG_THERMAL_HWMON is not set # CONFIG_WATCHDOG is not set - -# -# Sonics Silicon Backplane -# +# CONFIG_REGULATOR is not set # CONFIG_MEMSTICK is not set # CONFIG_NEW_LEDS is not set CONFIG_ACCESSIBILITY=y +# CONFIG_STAGING is not set +CONFIG_STAGING_EXCLUDE_BUILD=y # # File systems @@ -650,13 +657,14 @@ CONFIG_EXT3_FS=y CONFIG_EXT3_FS_XATTR=y # CONFIG_EXT3_FS_POSIX_ACL is not set # CONFIG_EXT3_FS_SECURITY is not set -# CONFIG_EXT4DEV_FS is not set +# CONFIG_EXT4_FS is not set CONFIG_JBD=y # CONFIG_JBD_DEBUG is not set CONFIG_FS_MBCACHE=y # CONFIG_REISERFS_FS is not set # CONFIG_JFS_FS is not set CONFIG_FS_POSIX_ACL=y +CONFIG_FILE_LOCKING=y # CONFIG_XFS_FS is not set # CONFIG_GFS2_FS is not set # CONFIG_OCFS2_FS is not set @@ -688,6 +696,7 @@ CONFIG_GENERIC_ACL=y CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_PROC_SYSCTL=y +CONFIG_PROC_PAGE_MONITOR=y CONFIG_SYSFS=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y @@ -728,6 +737,7 @@ CONFIG_LOCKD_V4=y CONFIG_EXPORTFS=y CONFIG_NFS_COMMON=y CONFIG_SUNRPC=y +# CONFIG_SUNRPC_REGISTER_V4 is not set # CONFIG_RPCSEC_GSS_KRB5 is not set # CONFIG_RPCSEC_GSS_SPKM3 is not set # CONFIG_SMB_FS is not set @@ -800,12 +810,24 @@ CONFIG_DEBUG_MEMORY_INIT=y # CONFIG_DEBUG_SG is not set # CONFIG_FRAME_POINTER is not set # CONFIG_RCU_TORTURE_TEST is not set +# CONFIG_RCU_CPU_STALL_DETECTOR is not set # CONFIG_KPROBES_SANITY_TEST is not set # CONFIG_BACKTRACE_SELF_TEST is not set +# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set # CONFIG_LKDTM is not set # CONFIG_FAULT_INJECTION is not set # CONFIG_LATENCYTOP is not set CONFIG_SYSCTL_SYSCALL_CHECK=y + +# +# Tracers +# +# CONFIG_IRQSOFF_TRACER is not set +# CONFIG_PREEMPT_TRACER is not set +# CONFIG_SCHED_TRACER is not set +# CONFIG_CONTEXT_SWITCH_TRACER is not set +# CONFIG_BOOT_TRACER is not set +# CONFIG_DYNAMIC_PRINTK_DEBUG is not set CONFIG_SAMPLES=y # CONFIG_SAMPLE_KOBJECT is not set # CONFIG_SAMPLE_KPROBES is not set @@ -816,16 +838,19 @@ CONFIG_SAMPLES=y # # CONFIG_KEYS is not set # CONFIG_SECURITY is not set +# CONFIG_SECURITYFS is not set # CONFIG_SECURITY_FILE_CAPABILITIES is not set CONFIG_CRYPTO=y # # Crypto core or helper # +CONFIG_CRYPTO_FIPS=y CONFIG_CRYPTO_ALGAPI=y -CONFIG_CRYPTO_AEAD=m +CONFIG_CRYPTO_AEAD=y CONFIG_CRYPTO_BLKCIPHER=y -CONFIG_CRYPTO_HASH=m +CONFIG_CRYPTO_HASH=y +CONFIG_CRYPTO_RNG=y CONFIG_CRYPTO_MANAGER=y CONFIG_CRYPTO_GF128MUL=m # CONFIG_CRYPTO_NULL is not set @@ -877,7 +902,7 @@ CONFIG_CRYPTO_SHA1=m # # Ciphers # -# CONFIG_CRYPTO_AES is not set +CONFIG_CRYPTO_AES=m # CONFIG_CRYPTO_ANUBIS is not set # CONFIG_CRYPTO_ARC4 is not set # CONFIG_CRYPTO_BLOWFISH is not set @@ -898,6 +923,11 @@ CONFIG_CRYPTO_SEED=m # # CONFIG_CRYPTO_DEFLATE is not set CONFIG_CRYPTO_LZO=m + +# +# Random Number Generation +# +CONFIG_CRYPTO_ANSI_CPRNG=m CONFIG_CRYPTO_HW=y CONFIG_ZCRYPT=m # CONFIG_ZCRYPT_MONOLITHIC is not set @@ -912,8 +942,6 @@ CONFIG_S390_PRNG=m # Library routines # CONFIG_BITREVERSE=m -# CONFIG_GENERIC_FIND_FIRST_BIT is not set -# CONFIG_GENERIC_FIND_NEXT_BIT is not set # CONFIG_CRC_CCITT is not set # CONFIG_CRC16 is not set CONFIG_CRC_T10DIF=y -- cgit v1.2.3 From 96b8936a9ed08746e47081458a5eb9e43a751e24 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 25 Nov 2008 08:10:03 +0100 Subject: remove __ARCH_WANT_COMPAT_SYS_PTRACE All architectures now use the generic compat_sys_ptrace, as should every new architecture that needs 32bit compat (if we'll ever get another). Remove the now superflous __ARCH_WANT_COMPAT_SYS_PTRACE define, and also kill a comment about __ARCH_SYS_PTRACE that was added after __ARCH_SYS_PTRACE was already gone. Signed-off-by: Christoph Hellwig Acked-by: David S. Miller Signed-off-by: Linus Torvalds --- arch/s390/include/asm/ptrace.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/s390') diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index a7226f8143f..560ce8561df 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -486,8 +486,6 @@ struct task_struct; extern void user_enable_single_step(struct task_struct *); extern void user_disable_single_step(struct task_struct *); -#define __ARCH_WANT_COMPAT_SYS_PTRACE - #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) #define user_stack_pointer(regs)((regs)->gprs[15]) -- cgit v1.2.3