Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky: "A couple of bug fixes: - correct some CPU-MF counter names for z13 and z14 - correct locking in the vfio-ccw fsm_io_helper function - provide arch_uretprobe_is_alive to avoid sigsegv with uretprobes - fix a corner case with CPU-MF sampling in regard to execve - fix expoline code revert for loadable modules - update chpid descriptor for resource accessibility events - fix dasd I/O errors due to outdated device alias infomation" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390: correct module section names for expoline code revert vfio: ccw: process ssch with interrupts disabled s390: update sampling tag after task pid change s390/cpum_cf: rename IBM z13/z14 counter names s390/dasd: fix IO error for newly defined devices s390/uprobes: implement arch_uretprobe_is_alive() s390/cio: update chpid descriptor after resource accessibility event
This commit is contained in:
commit
1334ac11d9
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@ -45,6 +45,9 @@ struct thread_info {
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void arch_release_task_struct(struct task_struct *tsk);
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int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
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void arch_setup_new_exec(void);
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#define arch_setup_new_exec arch_setup_new_exec
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#endif
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/*
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@ -465,11 +465,11 @@ int module_finalize(const Elf_Ehdr *hdr,
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apply_alternatives(aseg, aseg + s->sh_size);
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if (IS_ENABLED(CONFIG_EXPOLINE) &&
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(!strcmp(".nospec_call_table", secname)))
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(!strncmp(".s390_indirect", secname, 14)))
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nospec_revert(aseg, aseg + s->sh_size);
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if (IS_ENABLED(CONFIG_EXPOLINE) &&
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(!strcmp(".nospec_return_table", secname)))
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(!strncmp(".s390_return", secname, 12)))
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nospec_revert(aseg, aseg + s->sh_size);
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}
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@ -123,7 +123,7 @@ CPUMF_EVENT_ATTR(cf_zec12, L1I_OFFBOOK_L3_SOURCED_WRITES_IV, 0x00a1);
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CPUMF_EVENT_ATTR(cf_zec12, TX_NC_TABORT, 0x00b1);
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CPUMF_EVENT_ATTR(cf_zec12, TX_C_TABORT_NO_SPECIAL, 0x00b2);
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CPUMF_EVENT_ATTR(cf_zec12, TX_C_TABORT_SPECIAL, 0x00b3);
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CPUMF_EVENT_ATTR(cf_z13, L1D_WRITES_RO_EXCL, 0x0080);
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CPUMF_EVENT_ATTR(cf_z13, L1D_RO_EXCL_WRITES, 0x0080);
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CPUMF_EVENT_ATTR(cf_z13, DTLB1_WRITES, 0x0081);
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CPUMF_EVENT_ATTR(cf_z13, DTLB1_MISSES, 0x0082);
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CPUMF_EVENT_ATTR(cf_z13, DTLB1_HPAGE_WRITES, 0x0083);
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@ -179,7 +179,7 @@ CPUMF_EVENT_ATTR(cf_z13, TX_C_TABORT_NO_SPECIAL, 0x00db);
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CPUMF_EVENT_ATTR(cf_z13, TX_C_TABORT_SPECIAL, 0x00dc);
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CPUMF_EVENT_ATTR(cf_z13, MT_DIAG_CYCLES_ONE_THR_ACTIVE, 0x01c0);
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CPUMF_EVENT_ATTR(cf_z13, MT_DIAG_CYCLES_TWO_THR_ACTIVE, 0x01c1);
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CPUMF_EVENT_ATTR(cf_z14, L1D_WRITES_RO_EXCL, 0x0080);
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CPUMF_EVENT_ATTR(cf_z14, L1D_RO_EXCL_WRITES, 0x0080);
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CPUMF_EVENT_ATTR(cf_z14, DTLB2_WRITES, 0x0081);
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CPUMF_EVENT_ATTR(cf_z14, DTLB2_MISSES, 0x0082);
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CPUMF_EVENT_ATTR(cf_z14, DTLB2_HPAGE_WRITES, 0x0083);
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@ -371,7 +371,7 @@ static struct attribute *cpumcf_zec12_pmu_event_attr[] __initdata = {
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};
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static struct attribute *cpumcf_z13_pmu_event_attr[] __initdata = {
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CPUMF_EVENT_PTR(cf_z13, L1D_WRITES_RO_EXCL),
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CPUMF_EVENT_PTR(cf_z13, L1D_RO_EXCL_WRITES),
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CPUMF_EVENT_PTR(cf_z13, DTLB1_WRITES),
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CPUMF_EVENT_PTR(cf_z13, DTLB1_MISSES),
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CPUMF_EVENT_PTR(cf_z13, DTLB1_HPAGE_WRITES),
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@ -431,7 +431,7 @@ static struct attribute *cpumcf_z13_pmu_event_attr[] __initdata = {
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};
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static struct attribute *cpumcf_z14_pmu_event_attr[] __initdata = {
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CPUMF_EVENT_PTR(cf_z14, L1D_WRITES_RO_EXCL),
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CPUMF_EVENT_PTR(cf_z14, L1D_RO_EXCL_WRITES),
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CPUMF_EVENT_PTR(cf_z14, DTLB2_WRITES),
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CPUMF_EVENT_PTR(cf_z14, DTLB2_MISSES),
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CPUMF_EVENT_PTR(cf_z14, DTLB2_HPAGE_WRITES),
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@ -29,6 +29,7 @@
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#include <linux/random.h>
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#include <linux/export.h>
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#include <linux/init_task.h>
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#include <asm/cpu_mf.h>
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#include <asm/io.h>
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#include <asm/processor.h>
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#include <asm/vtimer.h>
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@ -48,6 +49,15 @@ void flush_thread(void)
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{
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}
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void arch_setup_new_exec(void)
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{
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if (S390_lowcore.current_pid != current->pid) {
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S390_lowcore.current_pid = current->pid;
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if (test_facility(40))
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lpp(&S390_lowcore.lpp);
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}
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}
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void arch_release_task_struct(struct task_struct *tsk)
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{
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runtime_instr_release(tsk);
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@ -150,6 +150,15 @@ unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
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return orig;
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}
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bool arch_uretprobe_is_alive(struct return_instance *ret, enum rp_check ctx,
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struct pt_regs *regs)
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{
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if (ctx == RP_CHECK_CHAIN_CALL)
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return user_stack_pointer(regs) <= ret->stack;
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else
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return user_stack_pointer(regs) < ret->stack;
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}
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/* Instruction Emulation */
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static void adjust_psw_addr(psw_t *psw, unsigned long len)
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@ -592,13 +592,22 @@ static int _schedule_lcu_update(struct alias_lcu *lcu,
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int dasd_alias_add_device(struct dasd_device *device)
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{
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struct dasd_eckd_private *private = device->private;
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struct alias_lcu *lcu;
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__u8 uaddr = private->uid.real_unit_addr;
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struct alias_lcu *lcu = private->lcu;
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unsigned long flags;
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int rc;
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lcu = private->lcu;
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rc = 0;
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spin_lock_irqsave(&lcu->lock, flags);
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/*
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* Check if device and lcu type differ. If so, the uac data may be
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* outdated and needs to be updated.
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*/
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if (private->uid.type != lcu->uac->unit[uaddr].ua_type) {
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lcu->flags |= UPDATE_PENDING;
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DBF_DEV_EVENT(DBF_WARNING, device, "%s",
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"uid type mismatch - trigger rescan");
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}
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if (!(lcu->flags & UPDATE_PENDING)) {
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rc = _add_device_to_lcu(lcu, device, device);
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if (rc)
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@ -452,6 +452,7 @@ static void chsc_process_sei_link_incident(struct chsc_sei_nt0_area *sei_area)
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static void chsc_process_sei_res_acc(struct chsc_sei_nt0_area *sei_area)
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{
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struct channel_path *chp;
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struct chp_link link;
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struct chp_id chpid;
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int status;
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chpid.id = sei_area->rsid;
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/* allocate a new channel path structure, if needed */
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status = chp_get_status(chpid);
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if (status < 0)
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chp_new(chpid);
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else if (!status)
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if (!status)
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return;
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if (status < 0) {
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chp_new(chpid);
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} else {
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chp = chpid_to_chp(chpid);
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mutex_lock(&chp->lock);
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chp_update_desc(chp);
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mutex_unlock(&chp->lock);
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}
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memset(&link, 0, sizeof(struct chp_link));
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link.chpid = chpid;
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if ((sei_area->vf & 0xc0) != 0) {
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@ -20,12 +20,12 @@ static int fsm_io_helper(struct vfio_ccw_private *private)
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int ccode;
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__u8 lpm;
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unsigned long flags;
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int ret;
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sch = private->sch;
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spin_lock_irqsave(sch->lock, flags);
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private->state = VFIO_CCW_STATE_BUSY;
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spin_unlock_irqrestore(sch->lock, flags);
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orb = cp_get_orb(&private->cp, (u32)(addr_t)sch, sch->lpm);
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* Initialize device status information
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*/
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sch->schib.scsw.cmd.actl |= SCSW_ACTL_START_PEND;
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return 0;
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ret = 0;
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break;
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case 1: /* Status pending */
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case 2: /* Busy */
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return -EBUSY;
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ret = -EBUSY;
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break;
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case 3: /* Device/path not operational */
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{
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lpm = orb->cmd.lpm;
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sch->lpm = 0;
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if (cio_update_schib(sch))
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return -ENODEV;
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return sch->lpm ? -EACCES : -ENODEV;
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ret = -ENODEV;
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else
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ret = sch->lpm ? -EACCES : -ENODEV;
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break;
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}
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default:
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return ccode;
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ret = ccode;
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}
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spin_unlock_irqrestore(sch->lock, flags);
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return ret;
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}
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static void fsm_notoper(struct vfio_ccw_private *private,
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