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authorLinus Torvalds <torvalds@linux-foundation.org>2021-02-26 14:12:32 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-26 14:12:32 -0800
commite7270e47a09e83051da7b2bee71be00741860ec4 (patch)
treede4d9ed2d05d5d8c9df73b2e2ddf13e6c0f26dbf
parentc19798af2e66d9d3eb1060873bb435ea8bf4ad2e (diff)
parentcf6acb8bdb1d829b85a4daa2944bf9e71c93f4b9 (diff)
downloadlinux-stericsson-e7270e47a09e83051da7b2bee71be00741860ec4.tar.gz
Merge tag 's390-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Vasily Gorbik: - Fix physical vs virtual confusion in some basic mm macros and routines. Caused by __pa == __va on s390 currently. - Get rid of on-stack cpu masks. - Add support for complete CPU counter set extraction. - Add arch_irq_work_raise implementation. - virtio-ccw revision and opcode fixes. * tag 's390-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/cpumf: Add support for complete counter set extraction virtio/s390: implement virtio-ccw revision 2 correctly s390/smp: implement arch_irq_work_raise() s390/topology: move cpumasks away from stack s390/smp: smp_emergency_stop() - move cpumask away from stack s390/smp: __smp_rescan_cpus() - move cpumask away from stack s390/smp: consolidate locking for smp_rescan() s390/mm: fix phys vs virt confusion in vmem_*() functions family s390/mm: fix phys vs virt confusion in pgtable allocation routines s390/mm: fix invalid __pa() usage in pfn_pXd() macros s390/mm: make pXd_deref() macros return a pointer s390/opcodes: rename selhhhr to selfhr
-rw-r--r--arch/s390/include/asm/irq_work.h12
-rw-r--r--arch/s390/include/asm/pgalloc.h2
-rw-r--r--arch/s390/include/asm/pgtable.h16
-rw-r--r--arch/s390/include/uapi/asm/perf_cpum_cf_diag.h51
-rw-r--r--arch/s390/kernel/perf_cpum_cf_diag.c548
-rw-r--r--arch/s390/kernel/smp.c28
-rw-r--r--arch/s390/kernel/topology.c25
-rw-r--r--arch/s390/mm/pgalloc.c22
-rw-r--r--arch/s390/mm/vmem.c30
-rw-r--r--arch/s390/tools/opcodes.txt2
-rw-r--r--drivers/s390/virtio/virtio_ccw.c4
-rw-r--r--include/linux/cpuhotplug.h1
12 files changed, 660 insertions, 81 deletions
diff --git a/arch/s390/include/asm/irq_work.h b/arch/s390/include/asm/irq_work.h
new file mode 100644
index 000000000000..603783766d0a
--- /dev/null
+++ b/arch/s390/include/asm/irq_work.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_S390_IRQ_WORK_H
+#define _ASM_S390_IRQ_WORK_H
+
+static inline bool arch_irq_work_has_interrupt(void)
+{
+ return true;
+}
+
+void arch_irq_work_raise(void);
+
+#endif /* _ASM_S390_IRQ_WORK_H */
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index d1297d6bbdcf..6b187cd72251 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -135,7 +135,7 @@ static inline void pmd_populate(struct mm_struct *mm,
#define pmd_populate_kernel(mm, pmd, pte) pmd_populate(mm, pmd, pte)
#define pmd_pgtable(pmd) \
- (pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE)
+ ((pgtable_t)__va(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE))
/*
* page table entry allocation/free routines.
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 794746a32806..29c7ecd5ad1d 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -1219,8 +1219,8 @@ static inline pte_t mk_pte(struct page *page, pgprot_t pgprot)
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
-#define p4d_deref(pud) (p4d_val(pud) & _REGION_ENTRY_ORIGIN)
-#define pgd_deref(pgd) (pgd_val(pgd) & _REGION_ENTRY_ORIGIN)
+#define p4d_deref(pud) ((unsigned long)__va(p4d_val(pud) & _REGION_ENTRY_ORIGIN))
+#define pgd_deref(pgd) ((unsigned long)__va(pgd_val(pgd) & _REGION_ENTRY_ORIGIN))
static inline unsigned long pmd_deref(pmd_t pmd)
{
@@ -1229,12 +1229,12 @@ static inline unsigned long pmd_deref(pmd_t pmd)
origin_mask = _SEGMENT_ENTRY_ORIGIN;
if (pmd_large(pmd))
origin_mask = _SEGMENT_ENTRY_ORIGIN_LARGE;
- return pmd_val(pmd) & origin_mask;
+ return (unsigned long)__va(pmd_val(pmd) & origin_mask);
}
static inline unsigned long pmd_pfn(pmd_t pmd)
{
- return pmd_deref(pmd) >> PAGE_SHIFT;
+ return __pa(pmd_deref(pmd)) >> PAGE_SHIFT;
}
static inline unsigned long pud_deref(pud_t pud)
@@ -1244,12 +1244,12 @@ static inline unsigned long pud_deref(pud_t pud)
origin_mask = _REGION_ENTRY_ORIGIN;
if (pud_large(pud))
origin_mask = _REGION3_ENTRY_ORIGIN_LARGE;
- return pud_val(pud) & origin_mask;
+ return (unsigned long)__va(pud_val(pud) & origin_mask);
}
static inline unsigned long pud_pfn(pud_t pud)
{
- return pud_deref(pud) >> PAGE_SHIFT;
+ return __pa(pud_deref(pud)) >> PAGE_SHIFT;
}
/*
@@ -1329,7 +1329,7 @@ static inline bool gup_fast_permitted(unsigned long start, unsigned long end)
}
#define gup_fast_permitted gup_fast_permitted
-#define pfn_pte(pfn,pgprot) mk_pte_phys(__pa((pfn) << PAGE_SHIFT),(pgprot))
+#define pfn_pte(pfn, pgprot) mk_pte_phys(((pfn) << PAGE_SHIFT), (pgprot))
#define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT)
#define pte_page(x) pfn_to_page(pte_pfn(x))
@@ -1636,7 +1636,7 @@ static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
}
#define pmdp_collapse_flush pmdp_collapse_flush
-#define pfn_pmd(pfn, pgprot) mk_pmd_phys(__pa((pfn) << PAGE_SHIFT), (pgprot))
+#define pfn_pmd(pfn, pgprot) mk_pmd_phys(((pfn) << PAGE_SHIFT), (pgprot))
#define mk_pmd(page, pgprot) pfn_pmd(page_to_pfn(page), (pgprot))
static inline int pmd_trans_huge(pmd_t pmd)
diff --git a/arch/s390/include/uapi/asm/perf_cpum_cf_diag.h b/arch/s390/include/uapi/asm/perf_cpum_cf_diag.h
new file mode 100644
index 000000000000..3d8284b95f87
--- /dev/null
+++ b/arch/s390/include/uapi/asm/perf_cpum_cf_diag.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright IBM Corp. 2021
+ * Interface implementation for communication with the CPU Measurement
+ * counter facility device driver.
+ *
+ * Author(s): Thomas Richter <tmricht@linux.ibm.com>
+ *
+ * Define for ioctl() commands to communicate with the CPU Measurement
+ * counter facility device driver.
+ */
+
+#ifndef _PERF_CPUM_CF_DIAG_H
+#define _PERF_CPUM_CF_DIAG_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define S390_HWCTR_DEVICE "hwctr"
+#define S390_HWCTR_START_VERSION 1
+
+struct s390_ctrset_start { /* Set CPUs to operate on */
+ __u64 version; /* Version of interface */
+ __u64 data_bytes; /* # of bytes required */
+ __u64 cpumask_len; /* Length of CPU mask in bytes */
+ __u64 *cpumask; /* Pointer to CPU mask */
+ __u64 counter_sets; /* Bit mask of counter sets to get */
+};
+
+struct s390_ctrset_setdata { /* Counter set data */
+ __u32 set; /* Counter set number */
+ __u32 no_cnts; /* # of counters stored in cv[] */
+ __u64 cv[0]; /* Counter values (variable length) */
+};
+
+struct s390_ctrset_cpudata { /* Counter set data per CPU */
+ __u32 cpu_nr; /* CPU number */
+ __u32 no_sets; /* # of counters sets in data[] */
+ struct s390_ctrset_setdata data[0];
+};
+
+struct s390_ctrset_read { /* Structure to get all ctr sets */
+ __u64 no_cpus; /* Total # of CPUs data taken from */
+ struct s390_ctrset_cpudata data[0];
+};
+
+#define S390_HWCTR_MAGIC 'C' /* Random magic # for ioctls */
+#define S390_HWCTR_START _IOWR(S390_HWCTR_MAGIC, 1, struct s390_ctrset_start)
+#define S390_HWCTR_STOP _IO(S390_HWCTR_MAGIC, 2)
+#define S390_HWCTR_READ _IOWR(S390_HWCTR_MAGIC, 3, struct s390_ctrset_read)
+#endif
diff --git a/arch/s390/kernel/perf_cpum_cf_diag.c b/arch/s390/kernel/perf_cpum_cf_diag.c
index b5c86fb70d63..db4877bbb9aa 100644
--- a/arch/s390/kernel/perf_cpum_cf_diag.c
+++ b/arch/s390/kernel/perf_cpum_cf_diag.c
@@ -2,7 +2,7 @@
/*
* Performance event support for s390x - CPU-measurement Counter Sets
*
- * Copyright IBM Corp. 2019
+ * Copyright IBM Corp. 2019, 2021
* Author(s): Hendrik Brueckner <brueckner@linux.ibm.com>
* Thomas Richer <tmricht@linux.ibm.com>
*/
@@ -17,6 +17,8 @@
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/processor.h>
+#include <linux/miscdevice.h>
+#include <linux/mutex.h>
#include <asm/ctl_reg.h>
#include <asm/irq.h>
@@ -24,15 +26,20 @@
#include <asm/timex.h>
#include <asm/debug.h>
-#define CF_DIAG_CTRSET_DEF 0xfeef /* Counter set header mark */
+#include <asm/perf_cpum_cf_diag.h>
+#define CF_DIAG_CTRSET_DEF 0xfeef /* Counter set header mark */
+#define CF_DIAG_MIN_INTERVAL 60 /* Minimum counter set read */
+ /* interval in seconds */
+static unsigned long cf_diag_interval = CF_DIAG_MIN_INTERVAL;
static unsigned int cf_diag_cpu_speed;
static debug_info_t *cf_diag_dbg;
-struct cf_diag_csd { /* Counter set data per CPU */
+struct cf_diag_csd { /* Counter set data per CPU */
size_t used; /* Bytes used in data/start */
unsigned char start[PAGE_SIZE]; /* Counter set at event start */
unsigned char data[PAGE_SIZE]; /* Counter set at event delete */
+ unsigned int sets; /* # Counter set saved in data */
};
static DEFINE_PER_CPU(struct cf_diag_csd, cf_diag_csd);
@@ -178,18 +185,35 @@ static void cf_diag_disable(struct pmu *pmu)
/* Number of perf events counting hardware events */
static atomic_t cf_diag_events = ATOMIC_INIT(0);
+/* Used to avoid races in calling reserve/release_cpumf_hardware */
+static DEFINE_MUTEX(cf_diag_reserve_mutex);
/* Release the PMU if event is the last perf event */
static void cf_diag_perf_event_destroy(struct perf_event *event)
{
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d cf_diag_events %d\n",
- __func__, event, event->cpu,
+ __func__, event, smp_processor_id(),
atomic_read(&cf_diag_events));
if (atomic_dec_return(&cf_diag_events) == 0)
__kernel_cpumcf_end();
}
+static int get_authctrsets(void)
+{
+ struct cpu_cf_events *cpuhw;
+ unsigned long auth = 0;
+ enum cpumf_ctr_set i;
+
+ cpuhw = &get_cpu_var(cpu_cf_events);
+ for (i = CPUMF_CTR_SET_BASIC; i < CPUMF_CTR_SET_MAX; ++i) {
+ if (cpuhw->info.auth_ctl & cpumf_ctr_ctl[i])
+ auth |= cpumf_ctr_ctl[i];
+ }
+ put_cpu_var(cpu_cf_events);
+ return auth;
+}
+
/* Setup the event. Test for authorized counter sets and only include counter
* sets which are authorized at the time of the setup. Including unauthorized
* counter sets result in specification exception (and panic).
@@ -197,15 +221,12 @@ static void cf_diag_perf_event_destroy(struct perf_event *event)
static int __hw_perf_event_init(struct perf_event *event)
{
struct perf_event_attr *attr = &event->attr;
- struct cpu_cf_events *cpuhw;
- enum cpumf_ctr_set i;
int err = 0;
debug_sprintf_event(cf_diag_dbg, 5, "%s event %p cpu %d\n", __func__,
event, event->cpu);
event->hw.config = attr->config;
- event->hw.config_base = 0;
/* Add all authorized counter sets to config_base. The
* the hardware init function is either called per-cpu or just once
@@ -215,11 +236,7 @@ static int __hw_perf_event_init(struct perf_event *event)
* Checking the authorization on any CPU is fine as the hardware
* applies the same authorization settings to all CPUs.
*/
- cpuhw = &get_cpu_var(cpu_cf_events);
- for (i = CPUMF_CTR_SET_BASIC; i < CPUMF_CTR_SET_MAX; ++i)
- if (cpuhw->info.auth_ctl & cpumf_ctr_ctl[i])
- event->hw.config_base |= cpumf_ctr_ctl[i];
- put_cpu_var(cpu_cf_events);
+ event->hw.config_base = get_authctrsets();
/* No authorized counter sets, nothing to count/sample */
if (!event->hw.config_base) {
@@ -237,6 +254,25 @@ out:
return err;
}
+/* Return 0 if the CPU-measurement counter facility is currently free
+ * and an error otherwise.
+ */
+static int cf_diag_perf_event_inuse(void)
+{
+ int err = 0;
+
+ if (!atomic_inc_not_zero(&cf_diag_events)) {
+ mutex_lock(&cf_diag_reserve_mutex);
+ if (atomic_read(&cf_diag_events) == 0 &&
+ __kernel_cpumcf_begin())
+ err = -EBUSY;
+ else
+ err = atomic_inc_return(&cf_diag_events);
+ mutex_unlock(&cf_diag_reserve_mutex);
+ }
+ return err;
+}
+
static int cf_diag_event_init(struct perf_event *event)
{
struct perf_event_attr *attr = &event->attr;
@@ -264,13 +300,9 @@ static int cf_diag_event_init(struct perf_event *event)
}
/* Initialize for using the CPU-measurement counter facility */
- if (atomic_inc_return(&cf_diag_events) == 1) {
- if (__kernel_cpumcf_begin()) {
- atomic_dec(&cf_diag_events);
- err = -EBUSY;
- goto out;
- }
- }
+ err = cf_diag_perf_event_inuse();
+ if (err < 0)
+ goto out;
event->destroy = cf_diag_perf_event_destroy;
err = __hw_perf_event_init(event);
@@ -599,6 +631,8 @@ static void cf_diag_del(struct perf_event *event, int flags)
cpuhw->flags &= ~PMU_F_IN_USE;
}
+/* Default counter set events and format attribute groups */
+
CPUMF_EVENT_ATTR(CF_DIAG, CF_DIAG, PERF_EVENT_CPUM_CF_DIAG);
static struct attribute *cf_diag_events_attr[] = {
@@ -663,6 +697,452 @@ static void cf_diag_get_cpu_speed(void)
}
}
+/* Code to create device and file I/O operations */
+static atomic_t ctrset_opencnt = ATOMIC_INIT(0); /* Excl. access */
+
+static int cf_diag_open(struct inode *inode, struct file *file)
+{
+ int err = 0;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+ if (atomic_xchg(&ctrset_opencnt, 1))
+ return -EBUSY;
+
+ /* Avoid concurrent access with perf_event_open() system call */
+ mutex_lock(&cf_diag_reserve_mutex);
+ if (atomic_read(&cf_diag_events) || __kernel_cpumcf_begin())
+ err = -EBUSY;
+ mutex_unlock(&cf_diag_reserve_mutex);
+ if (err) {
+ atomic_set(&ctrset_opencnt, 0);
+ return err;
+ }
+ file->private_data = NULL;
+ debug_sprintf_event(cf_diag_dbg, 2, "%s\n", __func__);
+ /* nonseekable_open() never fails */
+ return nonseekable_open(inode, file);
+}
+
+/* Variables for ioctl() interface support */
+static DEFINE_MUTEX(cf_diag_ctrset_mutex);
+static struct cf_diag_ctrset {
+ unsigned long ctrset; /* Bit mask of counter set to read */
+ cpumask_t mask; /* CPU mask to read from */
+ time64_t lastread; /* Epoch counter set last read */
+} cf_diag_ctrset;
+
+static void cf_diag_ctrset_clear(void)
+{
+ cpumask_clear(&cf_diag_ctrset.mask);
+ cf_diag_ctrset.ctrset = 0;
+}
+
+static void cf_diag_release_cpu(void *p)
+{
+ struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
+
+ debug_sprintf_event(cf_diag_dbg, 3, "%s cpu %d\n", __func__,
+ smp_processor_id());
+ lcctl(0); /* Reset counter sets */
+ cpuhw->state = 0; /* Save state in CPU hardware state */
+}
+
+/* Release function is also called when application gets terminated without
+ * doing a proper ioctl(..., S390_HWCTR_STOP, ...) command.
+ * Since only one application is allowed to open the device, simple stop all
+ * CPU counter sets.
+ */
+static int cf_diag_release(struct inode *inode, struct file *file)
+{
+ on_each_cpu(cf_diag_release_cpu, NULL, 1);
+ cf_diag_ctrset_clear();
+ atomic_set(&ctrset_opencnt, 0);
+ __kernel_cpumcf_end();
+ debug_sprintf_event(cf_diag_dbg, 2, "%s\n", __func__);
+ return 0;
+}
+
+struct cf_diag_call_on_cpu_parm { /* Parm struct for smp_call_on_cpu */
+ unsigned int sets; /* Counter set bit mask */
+ atomic_t cpus_ack; /* # CPUs successfully executed func */
+};
+
+static int cf_diag_all_copy(unsigned long arg, cpumask_t *mask)
+{
+ struct s390_ctrset_read __user *ctrset_read;
+ unsigned int cpu, cpus, rc;
+ void __user *uptr;
+
+ ctrset_read = (struct s390_ctrset_read __user *)arg;
+ uptr = ctrset_read->data;
+ for_each_cpu(cpu, mask) {
+ struct cf_diag_csd *csd = per_cpu_ptr(&cf_diag_csd, cpu);
+ struct s390_ctrset_cpudata __user *ctrset_cpudata;
+
+ ctrset_cpudata = uptr;
+ debug_sprintf_event(cf_diag_dbg, 5, "%s cpu %d used %zd\n",
+ __func__, cpu, csd->used);
+ rc = put_user(cpu, &ctrset_cpudata->cpu_nr);
+ rc |= put_user(csd->sets, &ctrset_cpudata->no_sets);
+ rc |= copy_to_user(ctrset_cpudata->data, csd->data, csd->used);
+ if (rc)
+ return -EFAULT;
+ uptr += sizeof(struct s390_ctrset_cpudata) + csd->used;
+ cond_resched();
+ }
+ cpus = cpumask_weight(mask);
+ if (put_user(cpus, &ctrset_read->no_cpus))
+ return -EFAULT;
+ debug_sprintf_event(cf_diag_dbg, 5, "%s copied %ld\n",
+ __func__, uptr - (void __user *)ctrset_read->data);
+ return 0;
+}
+
+static size_t cf_diag_cpuset_read(struct s390_ctrset_setdata *p, int ctrset,
+ int ctrset_size, size_t room)
+{
+ size_t need = 0;
+ int rc = -1;
+
+ need = sizeof(*p) + sizeof(u64) * ctrset_size;
+ debug_sprintf_event(cf_diag_dbg, 5,
+ "%s room %zd need %zd set %#x set_size %d\n",
+ __func__, room, need, ctrset, ctrset_size);
+ if (need <= room) {
+ p->set = cpumf_ctr_ctl[ctrset];
+ p->no_cnts = ctrset_size;
+ rc = ctr_stcctm(ctrset, ctrset_size, (u64 *)p->cv);
+ if (rc == 3) /* Nothing stored */
+ need = 0;
+ }
+ debug_sprintf_event(cf_diag_dbg, 5, "%s need %zd rc %d\n", __func__,
+ need, rc);
+ return need;
+}
+
+/* Read all counter sets. Since the perf_event_open() system call with
+ * event cpum_cf_diag/.../ is blocked when this interface is active, reuse
+ * the perf_event_open() data buffer to store the counter sets.
+ */
+static void cf_diag_cpu_read(void *parm)
+{
+ struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
+ struct cf_diag_csd *csd = this_cpu_ptr(&cf_diag_csd);
+ struct cf_diag_call_on_cpu_parm *p = parm;
+ int set, set_size;
+ size_t space;
+
+ debug_sprintf_event(cf_diag_dbg, 5,
+ "%s new %#x flags %#x state %#llx\n",
+ __func__, p->sets, cpuhw->flags,
+ cpuhw->state);
+ /* No data saved yet */
+ csd->used = 0;
+ csd->sets = 0;
+ memset(csd->data, 0, sizeof(csd->data));
+
+ /* Scan the counter sets */
+ for (set = CPUMF_CTR_SET_BASIC; set < CPUMF_CTR_SET_MAX; ++set) {
+ struct s390_ctrset_setdata *sp = (void *)csd->data + csd->used;
+
+ if (!(p->sets & cpumf_ctr_ctl[set]))
+ continue; /* Counter set not in list */
+ set_size = cf_diag_ctrset_size(set, &cpuhw->info);
+ space = sizeof(csd->data) - csd->used;
+ space = cf_diag_cpuset_read(sp, set, set_size, space);
+ if (space) {
+ csd->used += space;
+ csd->sets += 1;
+ }
+ debug_sprintf_event(cf_diag_dbg, 5, "%s sp %px space %zd\n",
+ __func__, sp, space);
+ }
+ debug_sprintf_event(cf_diag_dbg, 5, "%s sets %d used %zd\n", __func__,
+ csd->sets, csd->used);
+}
+
+static int cf_diag_all_read(unsigned long arg)
+{
+ struct cf_diag_call_on_cpu_parm p;
+ cpumask_var_t mask;
+ time64_t now;
+ int rc = 0;
+
+ debug_sprintf_event(cf_diag_dbg, 5, "%s\n", __func__);
+ if (!alloc_cpumask_var(&mask, GFP_KERNEL))
+ return -ENOMEM;
+ now = ktime_get_seconds();
+ if (cf_diag_ctrset.lastread + cf_diag_interval > now) {
+ debug_sprintf_event(cf_diag_dbg, 5, "%s now %lld "
+ " lastread %lld\n", __func__, now,
+ cf_diag_ctrset.lastread);
+ rc = -EAGAIN;
+ goto out;
+ } else {
+ cf_diag_ctrset.lastread = now;
+ }
+ p.sets = cf_diag_ctrset.ctrset;
+ cpumask_and(mask, &cf_diag_ctrset.mask, cpu_online_mask);
+ on_each_cpu_mask(mask, cf_diag_cpu_read, &p, 1);
+ rc = cf_diag_all_copy(arg, mask);
+out:
+ free_cpumask_var(mask);
+ debug_sprintf_event(cf_diag_dbg, 5, "%s rc %d\n", __func__, rc);
+ return rc;
+}
+
+/* Stop all counter sets via ioctl interface */
+static void cf_diag_ioctl_off(void *parm)
+{
+ struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
+ struct cf_diag_call_on_cpu_parm *p = parm;
+ int rc;
+
+ debug_sprintf_event(cf_diag_dbg, 5,
+ "%s new %#x flags %#x state %#llx\n",
+ __func__, p->sets, cpuhw->flags,
+ cpuhw->state);
+
+ ctr_set_multiple_disable(&cpuhw->state, p->sets);
+ ctr_set_multiple_stop(&cpuhw->state, p->sets);
+ rc = lcctl(cpuhw->state); /* Stop counter sets */
+ if (!cpuhw->state)
+ cpuhw->flags &= ~PMU_F_IN_USE;
+ debug_sprintf_event(cf_diag_dbg, 5,
+ "%s rc %d flags %#x state %#llx\n", __func__,
+ rc, cpuhw->flags, cpuhw->state);
+}
+
+/* Start counter sets on particular CPU */
+static void cf_diag_ioctl_on(void *parm)
+{
+ struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
+ struct cf_diag_call_on_cpu_parm *p = parm;
+ int rc;
+
+ debug_sprintf_event(cf_diag_dbg, 5,
+ "%s new %#x flags %#x state %#llx\n",
+ __func__, p->sets, cpuhw->flags,
+ cpuhw->state);
+
+ if (!(cpuhw->flags & PMU_F_IN_USE))
+ cpuhw->state = 0;
+ cpuhw->flags |= PMU_F_IN_USE;
+ rc = lcctl(cpuhw->state); /* Reset unused counter sets */
+ ctr_set_multiple_enable(&cpuhw->state, p->sets);
+ ctr_set_multiple_start(&cpuhw->state, p->sets);
+ rc |= lcctl(cpuhw->state); /* Start counter sets */
+ if (!rc)
+ atomic_inc(&p->cpus_ack);
+ debug_sprintf_event(cf_diag_dbg, 5, "%s rc %d state %#llx\n",
+ __func__, rc, cpuhw->state);
+}
+
+static int cf_diag_all_stop(void)
+{
+ struct cf_diag_call_on_cpu_parm p = {
+ .sets = cf_diag_ctrset.ctrset,
+ };
+ cpumask_var_t mask;
+
+ if (!alloc_cpumask_var(&mask, GFP_KERNEL))
+ return -ENOMEM;
+ cpumask_and(mask, &cf_diag_ctrset.mask, cpu_online_mask);
+ on_each_cpu_mask(mask, cf_diag_ioctl_off, &p, 1);
+ free_cpumask_var(mask);
+ return 0;
+}
+
+static int cf_diag_all_start(void)
+{
+ struct cf_diag_call_on_cpu_parm p = {
+ .sets = cf_diag_ctrset.ctrset,
+ .cpus_ack = ATOMIC_INIT(0),
+ };
+ cpumask_var_t mask;
+ int rc = 0;
+
+ if (!alloc_cpumask_var(&mask, GFP_KERNEL))
+ return -ENOMEM;
+ cpumask_and(mask, &cf_diag_ctrset.mask, cpu_online_mask);
+ on_each_cpu_mask(mask, cf_diag_ioctl_on, &p, 1);
+ if (atomic_read(&p.cpus_ack) != cpumask_weight(mask)) {
+ on_each_cpu_mask(mask, cf_diag_ioctl_off, &p, 1);
+ rc = -EIO;
+ }
+ free_cpumask_var(mask);
+ return rc;
+}
+
+/* Return the maximum required space for all possible CPUs in case one
+ * CPU will be onlined during the START, READ, STOP cycles.
+ * To find out the size of the counter sets, any one CPU will do. They
+ * all have the same counter sets.
+ */
+static size_t cf_diag_needspace(unsigned int sets)
+{
+ struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
+ size_t bytes = 0;
+ int i;
+
+ for (i = CPUMF_CTR_SET_BASIC; i < CPUMF_CTR_SET_MAX; ++i) {
+ if (!(sets & cpumf_ctr_ctl[i]))
+ continue;
+ bytes += cf_diag_ctrset_size(i, &cpuhw->info) * sizeof(u64) +
+ sizeof(((struct s390_ctrset_setdata *)0)->set) +
+ sizeof(((struct s390_ctrset_setdata *)0)->no_cnts);
+ }
+ bytes = sizeof(((struct s390_ctrset_read *)0)->no_cpus) + nr_cpu_ids *
+ (bytes + sizeof(((struct s390_ctrset_cpudata *)0)->cpu_nr) +
+ sizeof(((struct s390_ctrset_cpudata *)0)->no_sets));
+ debug_sprintf_event(cf_diag_dbg, 5, "%s bytes %ld\n", __func__,
+ bytes);
+ return bytes;
+}
+
+static long cf_diag_ioctl_read(unsigned long arg)
+{
+ struct s390_ctrset_read read;
+ int ret = 0;
+
+ debug_sprintf_event(cf_diag_dbg, 5, "%s\n", __func__);
+ if (copy_from_user(&read, (char __user *)arg, sizeof(read)))
+ return -EFAULT;
+ ret = cf_diag_all_read(arg);
+ debug_sprintf_event(cf_diag_dbg, 5, "%s ret %d\n", __func__, ret);
+ return ret;
+}
+
+static long cf_diag_ioctl_stop(void)
+{
+ int ret;
+
+ debug_sprintf_event(cf_diag_dbg, 5, "%s\n", __func__);
+ ret = cf_diag_all_stop();
+ cf_diag_ctrset_clear();
+ debug_sprintf_event(cf_diag_dbg, 5, "%s ret %d\n", __func__, ret);
+ return ret;
+}
+
+static long cf_diag_ioctl_start(unsigned long arg)
+{
+ struct s390_ctrset_start __user *ustart;
+ struct s390_ctrset_start start;
+ void __user *umask;
+ unsigned int len;
+ int ret = 0;
+ size_t need;
+
+ if (cf_diag_ctrset.ctrset)
+ return -EBUSY;
+ ustart = (struct s390_ctrset_start __user *)arg;
+ if (copy_from_user(&start, ustart, sizeof(start)))
+ return -EFAULT;
+ if (start.version != S390_HWCTR_START_VERSION)
+ return -EINVAL;
+ if (start.counter_sets & ~(cpumf_ctr_ctl[CPUMF_CTR_SET_BASIC] |
+ cpumf_ctr_ctl[CPUMF_CTR_SET_USER] |
+ cpumf_ctr_ctl[CPUMF_CTR_SET_CRYPTO] |
+ cpumf_ctr_ctl[CPUMF_CTR_SET_EXT] |
+ cpumf_ctr_ctl[CPUMF_CTR_SET_MT_DIAG]))
+ return -EINVAL; /* Invalid counter set */
+ if (!start.counter_sets)
+ return -EINVAL; /* No counter set at all? */
+ cpumask_clear(&cf_diag_ctrset.mask);
+ len = min_t(u64, start.cpumask_len, cpumask_size());
+ umask = (void __user *)start.cpumask;
+ if (copy_from_user(&cf_diag_ctrset.mask, umask, len))
+ return -EFAULT;
+ if (cpumask_empty(&cf_diag_ctrset.mask))
+ return -EINVAL;
+ need = cf_diag_needspace(start.counter_sets);
+ if (put_user(need, &ustart->data_bytes))
+ ret = -EFAULT;
+ if (ret)
+ goto out;
+ cf_diag_ctrset.ctrset = start.counter_sets;
+ ret = cf_diag_all_start();
+out:
+ if (ret)
+ cf_diag_ctrset_clear();
+ debug_sprintf_event(cf_diag_dbg, 2, "%s sets %#lx need %ld ret %d\n",
+ __func__, cf_diag_ctrset.ctrset, need, ret);
+ return ret;
+}
+
+static long cf_diag_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ int ret;
+
+ debug_sprintf_event(cf_diag_dbg, 2, "%s cmd %#x arg %lx\n", __func__,
+ cmd, arg);
+ get_online_cpus();
+ mutex_lock(&cf_diag_ctrset_mutex);
+ switch (cmd) {
+ case S390_HWCTR_START:
+ ret = cf_diag_ioctl_start(arg);
+ break;
+ case S390_HWCTR_STOP:
+ ret = cf_diag_ioctl_stop();
+ break;
+ case S390_HWCTR_READ:
+ ret = cf_diag_ioctl_read(arg);
+ break;
+ default:
+ ret = -ENOTTY;
+ break;
+ }
+ mutex_unlock(&cf_diag_ctrset_mutex);
+ put_online_cpus();
+ debug_sprintf_event(cf_diag_dbg, 2, "%s ret %d\n", __func__, ret);
+ return ret;
+}
+
+static const struct file_operations cf_diag_fops = {
+ .owner = THIS_MODULE,
+ .open = cf_diag_open,
+ .release = cf_diag_release,
+ .unlocked_ioctl = cf_diag_ioctl,
+ .compat_ioctl = cf_diag_ioctl,
+ .llseek = no_llseek
+};
+
+static struct miscdevice cf_diag_dev = {
+ .name = S390_HWCTR_DEVICE,
+ .minor = MISC_DYNAMIC_MINOR,
+ .fops = &cf_diag_fops,
+};
+
+static int cf_diag_online_cpu(unsigned int cpu)
+{
+ struct cf_diag_call_on_cpu_parm p;
+
+ mutex_lock(&cf_diag_ctrset_mutex);
+ if (!cf_diag_ctrset.ctrset)
+ goto out;
+ p.sets = cf_diag_ctrset.ctrset;
+ cf_diag_ioctl_on(&p);
+out:
+ mutex_unlock(&cf_diag_ctrset_mutex);
+ return 0;
+}
+
+static int cf_diag_offline_cpu(unsigned int cpu)
+{
+ struct cf_diag_call_on_cpu_parm p;
+
+ mutex_lock(&cf_diag_ctrset_mutex);
+ if (!cf_diag_ctrset.ctrset)
+ goto out;
+ p.sets = cf_diag_ctrset.ctrset;
+ cf_diag_ioctl_off(&p);
+out:
+ mutex_unlock(&cf_diag_ctrset_mutex);
+ return 0;
+}
+
/* Initialize the counter set PMU to generate complete counter set data as
* event raw data. This relies on the CPU Measurement Counter Facility device
* already being loaded and initialized.
@@ -685,21 +1165,43 @@ static int __init cf_diag_init(void)
return -ENOMEM;
}
+ rc = misc_register(&cf_diag_dev);
+ if (rc) {
+ pr_err("Registration of /dev/" S390_HWCTR_DEVICE
+ "failed rc=%d\n", rc);
+ goto out;
+ }
+
/* Setup s390dbf facility */
cf_diag_dbg = debug_register(KMSG_COMPONENT, 2, 1, 128);
if (!cf_diag_dbg) {
pr_err("Registration of s390dbf(cpum_cf_diag) failed\n");
- return -ENOMEM;
+ rc = -ENOMEM;
+ goto out_dbf;
}
debug_register_view(cf_diag_dbg, &debug_sprintf_view);
rc = perf_pmu_register(&cf_diag, "cpum_cf_diag", -1);
if (rc) {
- debug_unregister_view(cf_diag_dbg, &debug_sprintf_view);
- debug_unregister(cf_diag_dbg);
pr_err("Registration of PMU(cpum_cf_diag) failed with rc=%i\n",
rc);
+ goto out_perf;
}
+ rc = cpuhp_setup_state_nocalls(CPUHP_AP_PERF_S390_CFD_ONLINE,
+ "perf/s390/cfd:online",
+ cf_diag_online_cpu, cf_diag_offline_cpu);
+ if (!rc)
+ goto out;
+
+ pr_err("Registration of CPUHP_AP_PERF_S390_CFD_ONLINE failed rc=%i\n",
+ rc);
+ perf_pmu_unregister(&cf_diag);
+out_perf:
+ debug_unregister_view(cf_diag_dbg, &debug_sprintf_view);
+ debug_unregister(cf_diag_dbg);
+out_dbf:
+ misc_deregister(&cf_diag_dev);
+out:
return rc;
}
-arch_initcall(cf_diag_init);
+device_initcall(cf_diag_init);
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index e299892440b6..58c8afa3da65 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -30,6 +30,7 @@
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/irqflags.h>
+#include <linux/irq_work.h>
#include <linux/cpu.h>
#include <linux/slab.h>
#include <linux/sched/hotplug.h>
@@ -62,6 +63,7 @@ enum {
ec_call_function_single,
ec_stop_cpu,
ec_mcck_pending,
+ ec_irq_work,
};
enum {
@@ -434,10 +436,12 @@ void notrace smp_yield_cpu(int cpu)
*/
void notrace smp_emergency_stop(void)
{
- cpumask_t cpumask;
+ static arch_spinlock_t lock = __ARCH_SPIN_LOCK_UNLOCKED;
+ static cpumask_t cpumask;
u64 end;
int cpu;
+ arch_spin_lock(&lock);
cpumask_copy(&cpumask, cpu_online_mask);
cpumask_clear_cpu(smp_processor_id(), &cpumask);
@@ -458,6 +462,7 @@ void notrace smp_emergency_stop(void)
break;
cpu_relax();
}
+ arch_spin_unlock(&lock);
}
NOKPROBE_SYMBOL(smp_emergency_stop);
@@ -505,6 +510,8 @@ static void smp_handle_ext_call(void)
generic_smp_call_function_single_interrupt();
if (test_bit(ec_mcck_pending, &bits))
__s390_handle_mcck();
+ if (test_bit(ec_irq_work, &bits))
+ irq_work_run();
}
static void do_ext_call_interrupt(struct ext_code ext_code,
@@ -537,6 +544,13 @@ void smp_send_reschedule(int cpu)
pcpu_ec_call(pcpu_devices + cpu, ec_schedule);
}
+#ifdef CONFIG_IRQ_WORK
+void arch_irq_work_raise(void)
+{
+ pcpu_ec_call(pcpu_devices + smp_processor_id(), ec_irq_work);
+}
+#endif
+
/*
* parameter area for the set/clear control bit callbacks
*/
@@ -775,11 +789,13 @@ static int smp_add_core(struct sclp_core_entry *core, cpumask_t *avail,
static int __smp_rescan_cpus(struct sclp_core_info *info, bool early)
{
struct sclp_core_entry *core;
- cpumask_t avail;
+ static cpumask_t avail;
bool configured;
u16 core_id;
int nr, i;
+ get_online_cpus();
+ mutex_lock(&smp_cpu_state_mutex);
nr = 0;
cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
/*
@@ -800,6 +816,8 @@ static int __smp_rescan_cpus(struct sclp_core_info *info, bool early)
configured = i < info->configured;
nr += smp_add_core(&info->core[i], &avail, configured, early);
}
+ mutex_unlock(&smp_cpu_state_mutex);
+ put_online_cpus();
return nr;
}
@@ -847,9 +865,7 @@ void __init smp_detect_cpus(void)
pr_info("%d configured CPUs, %d standby CPUs\n", c_cpus, s_cpus);
/* Add CPUs present at boot */
- get_online_cpus();
__smp_rescan_cpus(info, true);
- put_online_cpus();
memblock_free_early((unsigned long)info, sizeof(*info));
}
@@ -1178,11 +1194,7 @@ int __ref smp_rescan_cpus(void)
if (!info)
return -ENOMEM;
smp_get_core_info(info, 0);
- get_online_cpus();
- mutex_lock(&smp_cpu_state_mutex);
nr = __smp_rescan_cpus(info, false);
- mutex_unlock(&smp_cpu_state_mutex);
- put_online_cpus();
kfree(info);
if (nr)
topology_schedule_update();
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index ca47141a5be9..e7ce447651b9 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -62,16 +62,16 @@ static struct mask_info drawer_info;
struct cpu_topology_s390 cpu_topology[NR_CPUS];
EXPORT_SYMBOL_GPL(cpu_topology);
-static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
+static void cpu_group_map(cpumask_t *dst, struct mask_info *info, unsigned int cpu)
{
- cpumask_t mask;
+ static cpumask_t mask;
cpumask_copy(&mask, cpumask_of(cpu));
switch (topology_mode) {
case TOPOLOGY_MODE_HW:
while (info) {
if (cpumask_test_cpu(cpu, &info->mask)) {
- mask = info->mask;
+ cpumask_copy(&mask, &info->mask);
break;
}
info = info->next;
@@ -89,23 +89,24 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
break;
}
cpumask_and(&mask, &mask, cpu_online_mask);
- return mask;
+ cpumask_copy(dst, &mask);
}
-static cpumask_t cpu_thread_map(unsigned int cpu)
+static void cpu_thread_map(cpumask_t *dst, unsigned int cpu)
{
- cpumask_t mask;
+ static cpumask_t mask;
int i;
cpumask_copy(&mask, cpumask_of(cpu));
if (topology_mode != TOPOLOGY_MODE_HW)
- return mask;
+ goto out;
cpu -= cpu % (smp_cpu_mtid + 1);
for (i = 0; i <= smp_cpu_mtid; i++)
if (cpu_present(cpu + i))
cpumask_set_cpu(cpu + i, &mask);
cpumask_and(&mask, &mask, cpu_online_mask);
- return mask;
+out:
+ cpumask_copy(dst, &mask);
}
#define TOPOLOGY_CORE_BITS 64
@@ -250,10 +251,10 @@ void update_cpu_masks(void)
for_each_possible_cpu(cpu) {
topo = &cpu_topology[cpu];
- topo->thread_mask = cpu_thread_map(cpu);
- topo->core_mask = cpu_group_map(&socket_info, cpu);
- topo->book_mask = cpu_group_map(&book_info, cpu);
- topo->drawer_mask = cpu_group_map(&drawer_info, cpu);
+ cpu_thread_map(&topo->thread_mask, cpu);
+ cpu_group_map(&topo->core_mask, &socket_info, cpu);
+ cpu_group_map(&topo->book_mask, &book_info, cpu);
+ cpu_group_map(&topo->drawer_mask, &drawer_info, cpu);
topo->booted_cores = 0;
if (topology_mode != TOPOLOGY_MODE_HW) {
id = topology_mode == TOPOLOGY_MODE_PACKAGE ? 0 : cpu;
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c
index 4e87c819ddea..781965f7210e 100644
--- a/arch/s390/mm/pgalloc.c
+++ b/arch/s390/mm/pgalloc.c
@@ -58,7 +58,7 @@ unsigned long *crst_table_alloc(struct mm_struct *mm)
if (!page)
return NULL;
arch_set_page_dat(page, 2);
- return (unsigned long *) page_to_phys(page);
+ return (unsigned long *) page_to_virt(page);
}
void crst_table_free(struct mm_struct *mm, unsigned long *table)
@@ -161,7 +161,7 @@ struct page *page_table_alloc_pgste(struct mm_struct *mm)
page = alloc_page(GFP_KERNEL);
if (page) {
- table = (u64 *)page_to_phys(page);
+ table = (u64 *)page_to_virt(page);
memset64(table, _PAGE_INVALID, PTRS_PER_PTE);
memset64(table + PTRS_PER_PTE, 0, PTRS_PER_PTE);
}
@@ -194,7 +194,7 @@ unsigned long *page_table_alloc(struct mm_struct *mm)
mask = atomic_read(&page->_refcount) >> 24;
mask = (mask | (mask >> 4)) & 3;
if (mask != 3) {
- table = (unsigned long *) page_to_phys(page);
+ table = (unsigned long *) page_to_virt(page);
bit = mask & 1; /* =1 -> second 2K */
if (bit)
table += PTRS_PER_PTE;
@@ -217,7 +217,7 @@ unsigned long *page_table_alloc(struct mm_struct *mm)
}
arch_set_page_dat(page, 0);
/* Initialize page table */
- table = (unsigned long *) page_to_phys(page);
+ table = (unsigned long *) page_to_virt(page);
if (mm_alloc_pgste(mm)) {
/* Return 4K page table with PGSTEs */
atomic_xor_bits(&page->_refcount, 3 << 24);
@@ -239,10 +239,10 @@ void page_table_free(struct mm_struct *mm, unsigned long *table)
struct page *page;
unsigned int bit, mask;
- page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
+ page = virt_to_page(table);
if (!mm_alloc_pgste(mm)) {
/* Free 2K page table fragment of a 4K page */
- bit = (__pa(table) & ~PAGE_MASK)/(PTRS_PER_PTE*sizeof(pte_t));
+ bit = ((unsigned long) table & ~PAGE_MASK)/(PTRS_PER_PTE*sizeof(pte_t));
spin_lock_bh(&mm->context.lock);
mask = atomic_xor_bits(&page->_refcount, 1U << (bit + 24));
mask >>= 24;
@@ -269,14 +269,14 @@ void page_table_free_rcu(struct mmu_gather *tlb, unsigned long *table,
unsigned int bit, mask;
mm = tlb->mm;
- page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
+ page = virt_to_page(table);
if (mm_alloc_pgste(mm)) {
gmap_unlink(mm, table, vmaddr);
- table = (unsigned long *) (__pa(table) | 3);
+ table = (unsigned long *) ((unsigned long)table | 3);
tlb_remove_table(tlb, table);
return;
}
- bit = (__pa(table) & ~PAGE_MASK) / (PTRS_PER_PTE*sizeof(pte_t));
+ bit = ((unsigned long) table & ~PAGE_MASK) / (PTRS_PER_PTE*sizeof(pte_t));
spin_lock_bh(&mm->context.lock);
mask = atomic_xor_bits(&page->_refcount, 0x11U << (bit + 24));
mask >>= 24;
@@ -285,7 +285,7 @@ void page_table_free_rcu(struct mmu_gather *tlb, unsigned long *table,
else
list_del(&page->lru);
spin_unlock_bh(&mm->context.lock);
- table = (unsigned long *) (__pa(table) | (1U << bit));
+ table = (unsigned long *) ((unsigned long) table | (1U << bit));
tlb_remove_table(tlb, table);
}
@@ -293,7 +293,7 @@ void __tlb_remove_table(void *_table)
{
unsigned int mask = (unsigned long) _table & 3;
void *table = (void *)((unsigned long) _table ^ mask);
- struct page *page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
+ struct page *page = virt_to_page(table);
switch (mask) {
case 0: /* pmd, pud, or p4d */
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 82dbf9450105..96897fab89dc 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -27,14 +27,14 @@ static void __ref *vmem_alloc_pages(unsigned int order)
if (slab_is_available())
return (void *)__get_free_pages(GFP_KERNEL, order);
- return (void *) memblock_phys_alloc(size, size);
+ return memblock_alloc(size, size);
}
static void vmem_free_pages(unsigned long addr, int order)
{
/* We don't expect boot memory to be removed ever. */
if (!slab_is_available() ||
- WARN_ON_ONCE(PageReserved(phys_to_page(addr))))
+ WARN_ON_ONCE(PageReserved(virt_to_page(addr))))
return;
free_pages(addr, order);
}
@@ -57,7 +57,7 @@ pte_t __ref *vmem_pte_alloc(void)
if (slab_is_available())
pte = (pte_t *) page_table_alloc(&init_mm);
else
- pte = (pte_t *) memblock_phys_alloc(size, size);
+ pte = (pte_t *) memblock_alloc(size, size);
if (!pte)
return NULL;
memset64((u64 *)pte, _PAGE_INVALID, PTRS_PER_PTE);
@@ -85,7 +85,7 @@ static void vmemmap_flush_unused_sub_pmd(void)
{
if (!unused_sub_pmd_start)
return;
- memset(__va(unused_sub_pmd_start), PAGE_UNUSED,
+ memset((void *)unused_sub_pmd_start, PAGE_UNUSED,
ALIGN(unused_sub_pmd_start, PMD_SIZE) - unused_sub_pmd_start);
unused_sub_pmd_start = 0;
}
@@ -98,7 +98,7 @@ static void vmemmap_mark_sub_pmd_used(unsigned long start, unsigned long end)
* getting removed (just in case the memmap never gets initialized,
* e.g., because the memory block never gets onlined).
*/
- memset(__va(start), 0, sizeof(struct page));
+ memset((void *)start, 0, sizeof(struct page));
}
static void vmemmap_use_sub_pmd(unsigned long start, unsigned long end)
@@ -119,7 +119,7 @@ static void vmemmap_use_sub_pmd(unsigned long start, unsigned long end)
static void vmemmap_use_new_sub_pmd(unsigned long start, unsigned long end)
{
- void *page = __va(ALIGN_DOWN(start, PMD_SIZE));
+ unsigned long page = ALIGN_DOWN(start, PMD_SIZE);
vmemmap_flush_unused_sub_pmd();
@@ -128,7 +128,7 @@ static void vmemmap_use_new_sub_pmd(unsigned long start, unsigned long end)
/* Mark the unused parts of the new memmap page PAGE_UNUSED. */
if (!IS_ALIGNED(start, PMD_SIZE))
- memset(page, PAGE_UNUSED, start - __pa(page));
+ memset((void *)page, PAGE_UNUSED, start - page);
/*
* We want to avoid memset(PAGE_UNUSED) when populating the vmemmap of
* consecutive sections. Remember for the last added PMD the last
@@ -141,11 +141,11 @@ static void vmemmap_use_new_sub_pmd(unsigned long start, unsigned long end)
/* Returns true if the PMD is completely unused and can be freed. */
static bool vmemmap_unuse_sub_pmd(unsigned long start, unsigned long end)
{
- void *page = __va(ALIGN_DOWN(start, PMD_SIZE));
+ unsigned long page = ALIGN_DOWN(start, PMD_SIZE);
vmemmap_flush_unused_sub_pmd();
- memset(__va(start), PAGE_UNUSED, end - start);
- return !memchr_inv(page, PAGE_UNUSED, PMD_SIZE);
+ memset((void *)start, PAGE_UNUSED, end - start);
+ return !memchr_inv((void *)page, PAGE_UNUSED, PMD_SIZE);
}
/* __ref: we'll only call vmemmap_alloc_block() via vmemmap_populate() */
@@ -166,7 +166,7 @@ static int __ref modify_pte_table(pmd_t *pmd, unsigned long addr,
if (pte_none(*pte))
continue;
if (!direct)
- vmem_free_pages(pfn_to_phys(pte_pfn(*pte)), 0);
+ vmem_free_pages((unsigned long) pfn_to_virt(pte_pfn(*pte)), 0);
pte_clear(&init_mm, addr, pte);
} else if (pte_none(*pte)) {
if (!direct) {
@@ -176,7 +176,7 @@ static int __ref modify_pte_table(pmd_t *pmd, unsigned long addr,
goto out;
pte_val(*pte) = __pa(new_page) | prot;
} else {
- pte_val(*pte) = addr | prot;
+ pte_val(*pte) = __pa(addr) | prot;
}
} else {
continue;
@@ -201,7 +201,7 @@ static void try_free_pte_table(pmd_t *pmd, unsigned long start)
if (!pte_none(*pte))
return;
}
- vmem_pte_free(__va(pmd_deref(*pmd)));
+ vmem_pte_free((unsigned long *) pmd_deref(*pmd));
pmd_clear(pmd);
}
@@ -242,7 +242,7 @@ static int __ref modify_pmd_table(pud_t *pud, unsigned long addr,
IS_ALIGNED(next, PMD_SIZE) &&
MACHINE_HAS_EDAT1 && addr && direct &&
!debug_pagealloc_enabled()) {
- pmd_val(*pmd) = addr | prot;
+ pmd_val(*pmd) = __pa(addr) | prot;
pages++;
continue;
} else if (!direct && MACHINE_HAS_EDAT1) {
@@ -338,7 +338,7 @@ static int modify_pud_table(p4d_t *p4d, unsigned long addr, unsigned long end,
IS_ALIGNED(next, PUD_SIZE) &&
MACHINE_HAS_EDAT2 && addr && direct &&
!debug_pagealloc_enabled()) {
- pud_val(*pud) = addr | prot;
+ pud_val(*pud) = __pa(addr) | prot;
pages++;
continue;
}
diff --git a/arch/s390/tools/opcodes.txt b/arch/s390/tools/opcodes.txt
index 46d8ed96cf06..0e207c46e8da 100644
--- a/arch/s390/tools/opcodes.txt
+++ b/arch/s390/tools/opcodes.txt
@@ -597,7 +597,7 @@ b9b3 cu42 RRE_RR
b9bd trtre RRF_U0RR
b9be srstu RRE_RR
b9bf trte RRF_U0RR
-b9c0 selhhhr RRF_RURR
+b9c0 selfhr RRF_RURR
b9c8 ahhhr RRF_R0RR2
b9c9 shhhr RRF_R0RR2
b9ca alhhhr RRF_R0RR2
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index 5730572b52cd..54e686dca6de 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -117,7 +117,7 @@ struct virtio_rev_info {
};
/* the highest virtio-ccw revision we support */
-#define VIRTIO_CCW_REV_MAX 1
+#define VIRTIO_CCW_REV_MAX 2
struct virtio_ccw_vq_info {
struct virtqueue *vq;
@@ -952,7 +952,7 @@ static u8 virtio_ccw_get_status(struct virtio_device *vdev)
u8 old_status = vcdev->dma_area->status;
struct ccw1 *ccw;
- if (vcdev->revision < 1)
+ if (vcdev->revision < 2)
return vcdev->dma_area->status;
ccw = ccw_device_dma_zalloc(vcdev->cdev, sizeof(*ccw));
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index ee09a39627d6..9129ba231423 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -168,6 +168,7 @@ enum cpuhp_state {
CPUHP_AP_PERF_X86_CQM_ONLINE,
CPUHP_AP_PERF_X86_CSTATE_ONLINE,
CPUHP_AP_PERF_S390_CF_ONLINE,
+ CPUHP_AP_PERF_S390_CFD_ONLINE,
CPUHP_AP_PERF_S390_SF_ONLINE,
CPUHP_AP_PERF_ARM_CCI_ONLINE,
CPUHP_AP_PERF_ARM_CCN_ONLINE,