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-rw-r--r--arch/s390/appldata/appldata_base.c32
-rw-r--r--arch/s390/appldata/appldata_mem.c2
-rw-r--r--arch/s390/defconfig63
-rw-r--r--arch/s390/include/asm/cputime.h4
-rw-r--r--arch/s390/include/asm/kvm_host.h5
-rw-r--r--arch/s390/kernel/compat_linux.c18
-rw-r--r--arch/s390/kernel/head.S3
-rw-r--r--arch/s390/kernel/ipl.c1
-rw-r--r--arch/s390/kernel/time.c2
-rw-r--r--arch/s390/kernel/vmlinux.lds.S4
-rw-r--r--arch/s390/kernel/vtime.c16
-rw-r--r--arch/s390/kvm/intercept.c28
-rw-r--r--arch/s390/kvm/interrupt.c59
-rw-r--r--arch/s390/kvm/kvm-s390.c63
-rw-r--r--arch/s390/kvm/kvm-s390.h4
-rw-r--r--arch/s390/kvm/priv.c4
-rw-r--r--arch/s390/kvm/sigp.c16
17 files changed, 224 insertions, 100 deletions
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index aeb3cff95f63..1dfc7100c7ee 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -98,7 +98,7 @@ static DECLARE_WORK(appldata_work, appldata_work_fn);
/*
* Ops list
*/
-static DEFINE_SPINLOCK(appldata_ops_lock);
+static DEFINE_MUTEX(appldata_ops_mutex);
static LIST_HEAD(appldata_ops_list);
@@ -129,14 +129,14 @@ static void appldata_work_fn(struct work_struct *work)
i = 0;
get_online_cpus();
- spin_lock(&appldata_ops_lock);
+ mutex_lock(&appldata_ops_mutex);
list_for_each(lh, &appldata_ops_list) {
ops = list_entry(lh, struct appldata_ops, list);
if (ops->active == 1) {
ops->callback(ops->data);
}
}
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
put_online_cpus();
}
@@ -338,7 +338,7 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
struct list_head *lh;
found = 0;
- spin_lock(&appldata_ops_lock);
+ mutex_lock(&appldata_ops_mutex);
list_for_each(lh, &appldata_ops_list) {
tmp_ops = list_entry(lh, struct appldata_ops, list);
if (&tmp_ops->ctl_table[2] == ctl) {
@@ -346,15 +346,15 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
}
}
if (!found) {
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
return -ENODEV;
}
ops = ctl->data;
if (!try_module_get(ops->owner)) { // protect this function
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
return -ENODEV;
}
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
if (!*lenp || *ppos) {
*lenp = 0;
@@ -378,11 +378,11 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
return -EFAULT;
}
- spin_lock(&appldata_ops_lock);
+ mutex_lock(&appldata_ops_mutex);
if ((buf[0] == '1') && (ops->active == 0)) {
// protect work queue callback
if (!try_module_get(ops->owner)) {
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
module_put(ops->owner);
return -ENODEV;
}
@@ -407,7 +407,7 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
"failed with rc=%d\n", ops->name, rc);
module_put(ops->owner);
}
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
out:
*lenp = len;
*ppos += len;
@@ -433,9 +433,9 @@ int appldata_register_ops(struct appldata_ops *ops)
if (!ops->ctl_table)
return -ENOMEM;
- spin_lock(&appldata_ops_lock);
+ mutex_lock(&appldata_ops_mutex);
list_add(&ops->list, &appldata_ops_list);
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
ops->ctl_table[0].procname = appldata_proc_name;
ops->ctl_table[0].maxlen = 0;
@@ -452,9 +452,9 @@ int appldata_register_ops(struct appldata_ops *ops)
goto out;
return 0;
out:
- spin_lock(&appldata_ops_lock);
+ mutex_lock(&appldata_ops_mutex);
list_del(&ops->list);
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
kfree(ops->ctl_table);
return -ENOMEM;
}
@@ -466,9 +466,9 @@ out:
*/
void appldata_unregister_ops(struct appldata_ops *ops)
{
- spin_lock(&appldata_ops_lock);
+ mutex_lock(&appldata_ops_mutex);
list_del(&ops->list);
- spin_unlock(&appldata_ops_lock);
+ mutex_unlock(&appldata_ops_mutex);
unregister_sysctl_table(ops->sysctl_header);
kfree(ops->ctl_table);
}
diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c
index 3ed56b7d1b2f..4188cbe63a54 100644
--- a/arch/s390/appldata/appldata_mem.c
+++ b/arch/s390/appldata/appldata_mem.c
@@ -78,7 +78,7 @@ static void appldata_get_mem_data(void *data)
{
/*
* don't put large structures on the stack, we are
- * serialized through the appldata_ops_lock and can use static
+ * serialized through the appldata_ops_mutex and can use static
*/
static struct sysinfo val;
unsigned long ev[NR_VM_EVENT_ITEMS];
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index 31e809c77790..d401d56c255f 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.29-rc4
-# Wed Feb 11 10:07:16 2009
+# Linux kernel version: 2.6.30-rc3
+# Thu Apr 23 09:29:52 2009
#
CONFIG_SCHED_MC=y
CONFIG_MMU=y
@@ -22,6 +22,7 @@ CONFIG_NO_DMA=y
CONFIG_GENERIC_LOCKBREAK=y
CONFIG_PGSTE=y
CONFIG_VIRT_CPU_ACCOUNTING=y
+CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_S390=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
@@ -37,6 +38,7 @@ CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
CONFIG_AUDIT=y
@@ -77,21 +79,24 @@ CONFIG_IPC_NS=y
# CONFIG_NET_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
+CONFIG_RD_GZIP=y
+CONFIG_RD_BZIP2=y
+CONFIG_RD_LZMA=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
+CONFIG_ANON_INODES=y
# CONFIG_EMBEDDED is not set
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
+# CONFIG_STRIP_ASM_SYMS is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
-# CONFIG_COMPAT_BRK is not set
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
-CONFIG_ANON_INODES=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
@@ -99,10 +104,12 @@ CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_VM_EVENT_COUNTERS=y
+# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
# CONFIG_SLUB is not set
# CONFIG_SLOB is not set
# CONFIG_PROFILING is not set
+# CONFIG_MARKERS is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_KPROBES=y
CONFIG_HAVE_SYSCALL_WRAPPERS=y
@@ -111,6 +118,8 @@ CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_USE_GENERIC_SMP_HELPERS=y
+CONFIG_HAVE_DEFAULT_NO_SPIN_MUTEXES=y
+# CONFIG_SLOW_WORK is not set
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
@@ -124,7 +133,6 @@ CONFIG_MODVERSIONS=y
CONFIG_INIT_ALL_POSSIBLE=y
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
-# CONFIG_BLK_DEV_IO_TRACE is not set
CONFIG_BLK_DEV_BSG=y
# CONFIG_BLK_DEV_INTEGRITY is not set
CONFIG_BLOCK_COMPAT=y
@@ -211,11 +219,12 @@ CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_UNEVICTABLE_LRU=y
+CONFIG_HAVE_MLOCK=y
+CONFIG_HAVE_MLOCKED_PAGE_BIT=y
#
# I/O subsystem configuration
#
-CONFIG_MACHCHK_WARNING=y
CONFIG_QDIO=y
CONFIG_CHSC_SCH=m
@@ -247,12 +256,12 @@ CONFIG_S390_HYPFS_FS=y
CONFIG_KEXEC=y
# CONFIG_ZFCPDUMP is not set
CONFIG_S390_GUEST=y
+CONFIG_SECCOMP=y
CONFIG_NET=y
#
# Networking options
#
-CONFIG_COMPAT_NET_DEV_OPS=y
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_UNIX=y
@@ -374,6 +383,7 @@ CONFIG_SCTP_HMAC_MD5=y
# CONFIG_LAPB is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
+# CONFIG_PHONET is not set
CONFIG_NET_SCHED=y
#
@@ -438,7 +448,6 @@ 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_WIMAX is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
@@ -537,6 +546,7 @@ CONFIG_SCSI_FC_ATTRS=y
CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
# CONFIG_LIBFC is not set
+# CONFIG_LIBFCOE is not set
# CONFIG_SCSI_DEBUG is not set
CONFIG_ZFCP=y
CONFIG_SCSI_DH=m
@@ -544,6 +554,10 @@ CONFIG_SCSI_DH_RDAC=m
CONFIG_SCSI_DH_HP_SW=m
CONFIG_SCSI_DH_EMC=m
CONFIG_SCSI_DH_ALUA=m
+CONFIG_SCSI_OSD_INITIATOR=m
+CONFIG_SCSI_OSD_ULD=m
+CONFIG_SCSI_OSD_DPRINT_SENSE=1
+# CONFIG_SCSI_OSD_DEBUG is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_AUTODETECT=y
@@ -564,6 +578,7 @@ CONFIG_DM_MULTIPATH=m
# CONFIG_DM_DELAY is not set
# CONFIG_DM_UEVENT is not set
CONFIG_NETDEVICES=y
+CONFIG_COMPAT_NET_DEV_OPS=y
# CONFIG_IFB is not set
CONFIG_DUMMY=m
CONFIG_BONDING=m
@@ -667,6 +682,7 @@ CONFIG_S390_VMUR=m
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
CONFIG_ACCESSIBILITY=y
+# CONFIG_AUXDISPLAY is not set
# CONFIG_STAGING is not set
#
@@ -676,6 +692,7 @@ CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=y
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
CONFIG_EXT3_FS_XATTR=y
# CONFIG_EXT3_FS_POSIX_ACL is not set
# CONFIG_EXT3_FS_SECURITY is not set
@@ -701,6 +718,11 @@ CONFIG_INOTIFY_USER=y
CONFIG_GENERIC_ACL=y
#
+# Caches
+#
+# CONFIG_FSCACHE is not set
+
+#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
@@ -744,6 +766,8 @@ CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ROMFS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
+# CONFIG_EXOFS_FS is not set
+# CONFIG_NILFS2_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
@@ -758,7 +782,6 @@ 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
@@ -806,6 +829,7 @@ CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
+# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_SCHED_DEBUG is not set
# CONFIG_SCHEDSTATS is not set
# CONFIG_TIMER_STATS is not set
@@ -830,7 +854,6 @@ CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS 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
@@ -840,7 +863,9 @@ CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_SYSCTL_SYSCALL_CHECK=y
+# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_TRACING_SUPPORT=y
#
# Tracers
@@ -850,14 +875,17 @@ CONFIG_HAVE_FUNCTION_TRACER=y
# CONFIG_PREEMPT_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_EVENT_TRACER is not set
# CONFIG_BOOT_TRACER is not set
# CONFIG_TRACE_BRANCH_PROFILING is not set
# CONFIG_STACK_TRACER is not set
-# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
+# CONFIG_KMEMTRACE is not set
+# CONFIG_WORKQUEUE_TRACER is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_DYNAMIC_DEBUG is not set
CONFIG_SAMPLES=y
# CONFIG_SAMPLE_KOBJECT is not set
# CONFIG_SAMPLE_KPROBES is not set
-# CONFIG_DEBUG_PAGEALLOC is not set
#
# Security options
@@ -882,10 +910,12 @@ CONFIG_CRYPTO_HASH=m
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=m
CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_PCOMP=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_GF128MUL=m
# CONFIG_CRYPTO_NULL is not set
+CONFIG_CRYPTO_WORKQUEUE=y
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_AUTHENC=m
# CONFIG_CRYPTO_TEST is not set
@@ -954,6 +984,7 @@ CONFIG_CRYPTO_SEED=m
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
+CONFIG_CRYPTO_ZLIB=m
CONFIG_CRYPTO_LZO=m
#
@@ -969,6 +1000,7 @@ CONFIG_CRYPTO_SHA512_S390=m
# CONFIG_CRYPTO_DES_S390 is not set
# CONFIG_CRYPTO_AES_S390 is not set
CONFIG_S390_PRNG=m
+# CONFIG_BINARY_PRINTF is not set
#
# Library routines
@@ -982,9 +1014,14 @@ CONFIG_CRC_T10DIF=y
CONFIG_CRC32=m
CONFIG_CRC7=m
CONFIG_LIBCRC32C=m
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZLIB_DEFLATE=m
CONFIG_LZO_COMPRESS=m
CONFIG_LZO_DECOMPRESS=m
-CONFIG_PLIST=y
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_DECOMPRESS_BZIP2=y
+CONFIG_DECOMPRESS_LZMA=y
+CONFIG_NLATTR=y
CONFIG_HAVE_KVM=y
CONFIG_VIRTUALIZATION=y
CONFIG_KVM=m
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index 95b0f7db3c69..941384fbd39c 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -174,4 +174,8 @@ cputime64_to_clock_t(cputime64_t cputime)
return __div(cputime, 4096000000ULL / USER_HZ);
}
+cputime64_t s390_get_idle_time(int cpu);
+
+#define arch_idle_time(cpu) s390_get_idle_time(cpu)
+
#endif /* _S390_CPUTIME_H */
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 54ea39f96ecd..a27d0d5a6f86 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -13,6 +13,8 @@
#ifndef ASM_KVM_HOST_H
#define ASM_KVM_HOST_H
+#include <linux/hrtimer.h>
+#include <linux/interrupt.h>
#include <linux/kvm_host.h>
#include <asm/debug.h>
#include <asm/cpuid.h>
@@ -210,7 +212,8 @@ struct kvm_vcpu_arch {
s390_fp_regs guest_fpregs;
unsigned int guest_acrs[NUM_ACRS];
struct kvm_s390_local_interrupt local_int;
- struct timer_list ckc_timer;
+ struct hrtimer ckc_timer;
+ struct tasklet_struct tasklet;
union {
cpuid_t cpu_id;
u64 stidp_data;
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 6cc87d8c8682..002c70d3cb75 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -702,20 +702,12 @@ asmlinkage long sys32_fstatat64(unsigned int dfd, char __user *filename,
struct stat64_emu31 __user* statbuf, int flag)
{
struct kstat stat;
- int error = -EINVAL;
-
- if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
- goto out;
-
- if (flag & AT_SYMLINK_NOFOLLOW)
- error = vfs_lstat_fd(dfd, filename, &stat);
- else
- error = vfs_stat_fd(dfd, filename, &stat);
+ int error;
- if (!error)
- error = cp_stat64(statbuf, &stat);
-out:
- return error;
+ error = vfs_fstatat(dfd, filename, &stat, flag);
+ if (error)
+ return error;
+ return cp_stat64(statbuf, &stat);
}
/*
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index bba14494ee00..22596d70fc2e 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -23,6 +23,7 @@
*
*/
+#include <linux/init.h>
#include <asm/setup.h>
#include <asm/lowcore.h>
#include <asm/asm-offsets.h>
@@ -35,7 +36,7 @@
#define ARCH_OFFSET 0
#endif
-.section ".text.head","ax"
+__HEAD
#ifndef CONFIG_IPL
.org 0
.long 0x00080000,0x80000000+startup # Just a restart PSW
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 6f3711a0eaaa..b8bf4b140065 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -23,6 +23,7 @@
#include <asm/ebcdic.h>
#include <asm/reset.h>
#include <asm/sclp.h>
+#include <asm/sigp.h>
#include <asm/checksum.h>
#define IPL_PARM_BLOCK_VERSION 0
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 6ded50dfa75a..ef596d020573 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -201,7 +201,7 @@ unsigned long read_persistent_clock(void)
return ts.tv_sec;
}
-static cycle_t read_tod_clock(void)
+static cycle_t read_tod_clock(struct clocksource *cs)
{
return get_clock();
}
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 7a2063eb88f0..89399b8756c2 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -29,8 +29,8 @@ SECTIONS
. = 0x00000000;
.text : {
_text = .; /* Text and read-only data */
- *(.text.head)
- TEXT_TEXT
+ HEAD_TEXT
+ TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 38ea92ff04f9..c87f59bd8246 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -240,6 +240,22 @@ void vtime_stop_cpu(void)
}
}
+cputime64_t s390_get_idle_time(int cpu)
+{
+ struct s390_idle_data *idle;
+ unsigned long long now, idle_time, idle_enter;
+
+ idle = &per_cpu(s390_idle, cpu);
+ spin_lock(&idle->lock);
+ now = get_clock();
+ idle_time = 0;
+ idle_enter = idle->idle_enter;
+ if (idle_enter != 0ULL && idle_enter < now)
+ idle_time = now - idle_enter;
+ spin_unlock(&idle->lock);
+ return idle_time;
+}
+
/*
* Sorted add to a list. List is linear searched until first bigger
* element is found.
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 9d19803111ba..98997ccba501 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -154,17 +154,25 @@ static int handle_stop(struct kvm_vcpu *vcpu)
static int handle_validity(struct kvm_vcpu *vcpu)
{
int viwhy = vcpu->arch.sie_block->ipb >> 16;
+ int rc;
+
vcpu->stat.exit_validity++;
- if (viwhy == 0x37) {
- fault_in_pages_writeable((char __user *)
- vcpu->kvm->arch.guest_origin +
- vcpu->arch.sie_block->prefix,
- PAGE_SIZE);
- return 0;
- }
- VCPU_EVENT(vcpu, 2, "unhandled validity intercept code %d",
- viwhy);
- return -ENOTSUPP;
+ if ((viwhy == 0x37) && (vcpu->arch.sie_block->prefix
+ <= vcpu->kvm->arch.guest_memsize - 2*PAGE_SIZE)){
+ rc = fault_in_pages_writeable((char __user *)
+ vcpu->kvm->arch.guest_origin +
+ vcpu->arch.sie_block->prefix,
+ 2*PAGE_SIZE);
+ if (rc)
+ /* user will receive sigsegv, exit to user */
+ rc = -ENOTSUPP;
+ } else
+ rc = -ENOTSUPP;
+
+ if (rc)
+ VCPU_EVENT(vcpu, 2, "unhandled validity intercept code %d",
+ viwhy);
+ return rc;
}
static int handle_instruction(struct kvm_vcpu *vcpu)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 0189356fe209..f04f5301b1b4 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -12,6 +12,8 @@
#include <asm/lowcore.h>
#include <asm/uaccess.h>
+#include <linux/hrtimer.h>
+#include <linux/interrupt.h>
#include <linux/kvm_host.h>
#include <linux/signal.h>
#include "kvm-s390.h"
@@ -299,13 +301,13 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
}
if ((!rc) && atomic_read(&fi->active)) {
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
list_for_each_entry(inti, &fi->list, list)
if (__interrupt_is_deliverable(vcpu, inti)) {
rc = 1;
break;
}
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
}
if ((!rc) && (vcpu->arch.sie_block->ckc <
@@ -318,6 +320,12 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
return rc;
}
+int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
+{
+ /* do real check here */
+ return 1;
+}
+
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
{
return 0;
@@ -355,14 +363,12 @@ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu)
return 0;
}
- sltime = (vcpu->arch.sie_block->ckc - now) / (0xf4240000ul / HZ) + 1;
+ sltime = ((vcpu->arch.sie_block->ckc - now)*125)>>9;
- vcpu->arch.ckc_timer.expires = jiffies + sltime;
-
- add_timer(&vcpu->arch.ckc_timer);
- VCPU_EVENT(vcpu, 5, "enabled wait timer:%llx jiffies", sltime);
+ hrtimer_start(&vcpu->arch.ckc_timer, ktime_set (0, sltime) , HRTIMER_MODE_REL);
+ VCPU_EVENT(vcpu, 5, "enabled wait via clock comparator: %llx ns", sltime);
no_timer:
- spin_lock_bh(&vcpu->arch.local_int.float_int->lock);
+ spin_lock(&vcpu->arch.local_int.float_int->lock);
spin_lock_bh(&vcpu->arch.local_int.lock);
add_wait_queue(&vcpu->arch.local_int.wq, &wait);
while (list_empty(&vcpu->arch.local_int.list) &&
@@ -371,33 +377,46 @@ no_timer:
!signal_pending(current)) {
set_current_state(TASK_INTERRUPTIBLE);
spin_unlock_bh(&vcpu->arch.local_int.lock);
- spin_unlock_bh(&vcpu->arch.local_int.float_int->lock);
+ spin_unlock(&vcpu->arch.local_int.float_int->lock);
vcpu_put(vcpu);
schedule();
vcpu_load(vcpu);
- spin_lock_bh(&vcpu->arch.local_int.float_int->lock);
+ spin_lock(&vcpu->arch.local_int.float_int->lock);
spin_lock_bh(&vcpu->arch.local_int.lock);
}
__unset_cpu_idle(vcpu);
__set_current_state(TASK_RUNNING);
remove_wait_queue(&vcpu->wq, &wait);
spin_unlock_bh(&vcpu->arch.local_int.lock);
- spin_unlock_bh(&vcpu->arch.local_int.float_int->lock);
- del_timer(&vcpu->arch.ckc_timer);
+ spin_unlock(&vcpu->arch.local_int.float_int->lock);
+ hrtimer_try_to_cancel(&vcpu->arch.ckc_timer);
return 0;
}
-void kvm_s390_idle_wakeup(unsigned long data)
+void kvm_s390_tasklet(unsigned long parm)
{
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
+ struct kvm_vcpu *vcpu = (struct kvm_vcpu *) parm;
- spin_lock_bh(&vcpu->arch.local_int.lock);
+ spin_lock(&vcpu->arch.local_int.lock);
vcpu->arch.local_int.timer_due = 1;
if (waitqueue_active(&vcpu->arch.local_int.wq))
wake_up_interruptible(&vcpu->arch.local_int.wq);
- spin_unlock_bh(&vcpu->arch.local_int.lock);
+ spin_unlock(&vcpu->arch.local_int.lock);
}
+/*
+ * low level hrtimer wake routine. Because this runs in hardirq context
+ * we schedule a tasklet to do the real work.
+ */
+enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer)
+{
+ struct kvm_vcpu *vcpu;
+
+ vcpu = container_of(timer, struct kvm_vcpu, arch.ckc_timer);
+ tasklet_schedule(&vcpu->arch.tasklet);
+
+ return HRTIMER_NORESTART;
+}
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
{
@@ -436,7 +455,7 @@ void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
if (atomic_read(&fi->active)) {
do {
deliver = 0;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
list_for_each_entry_safe(inti, n, &fi->list, list) {
if (__interrupt_is_deliverable(vcpu, inti)) {
list_del(&inti->list);
@@ -447,7 +466,7 @@ void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
}
if (list_empty(&fi->list))
atomic_set(&fi->active, 0);
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
if (deliver) {
__do_deliver_interrupt(vcpu, inti);
kfree(inti);
@@ -512,7 +531,7 @@ int kvm_s390_inject_vm(struct kvm *kvm,
mutex_lock(&kvm->lock);
fi = &kvm->arch.float_int;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
list_add_tail(&inti->list, &fi->list);
atomic_set(&fi->active, 1);
sigcpu = find_first_bit(fi->idle_mask, KVM_MAX_VCPUS);
@@ -529,7 +548,7 @@ int kvm_s390_inject_vm(struct kvm *kvm,
if (waitqueue_active(&li->wq))
wake_up_interruptible(&li->wq);
spin_unlock_bh(&li->lock);
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
mutex_unlock(&kvm->lock);
return 0;
}
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index f4d56e9939c9..10bccd1f8aee 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -15,6 +15,7 @@
#include <linux/compiler.h>
#include <linux/err.h>
#include <linux/fs.h>
+#include <linux/hrtimer.h>
#include <linux/init.h>
#include <linux/kvm.h>
#include <linux/kvm_host.h>
@@ -195,6 +196,10 @@ out_nokvm:
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
VCPU_EVENT(vcpu, 3, "%s", "free cpu");
+ if (vcpu->kvm->arch.sca->cpu[vcpu->vcpu_id].sda ==
+ (__u64) vcpu->arch.sie_block)
+ vcpu->kvm->arch.sca->cpu[vcpu->vcpu_id].sda = 0;
+ smp_mb();
free_page((unsigned long)(vcpu->arch.sie_block));
kvm_vcpu_uninit(vcpu);
kfree(vcpu);
@@ -283,8 +288,10 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
vcpu->arch.sie_block->gmsor = vcpu->kvm->arch.guest_origin;
vcpu->arch.sie_block->ecb = 2;
vcpu->arch.sie_block->eca = 0xC1002001U;
- setup_timer(&vcpu->arch.ckc_timer, kvm_s390_idle_wakeup,
- (unsigned long) vcpu);
+ hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
+ tasklet_init(&vcpu->arch.tasklet, kvm_s390_tasklet,
+ (unsigned long) vcpu);
+ vcpu->arch.ckc_timer.function = kvm_s390_idle_wakeup;
get_cpu_id(&vcpu->arch.cpu_id);
vcpu->arch.cpu_id.version = 0xff;
return 0;
@@ -307,19 +314,21 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
vcpu->arch.sie_block->icpua = id;
BUG_ON(!kvm->arch.sca);
- BUG_ON(kvm->arch.sca->cpu[id].sda);
- kvm->arch.sca->cpu[id].sda = (__u64) vcpu->arch.sie_block;
+ if (!kvm->arch.sca->cpu[id].sda)
+ kvm->arch.sca->cpu[id].sda = (__u64) vcpu->arch.sie_block;
+ else
+ BUG_ON(!kvm->vcpus[id]); /* vcpu does already exist */
vcpu->arch.sie_block->scaoh = (__u32)(((__u64)kvm->arch.sca) >> 32);
vcpu->arch.sie_block->scaol = (__u32)(__u64)kvm->arch.sca;
spin_lock_init(&vcpu->arch.local_int.lock);
INIT_LIST_HEAD(&vcpu->arch.local_int.list);
vcpu->arch.local_int.float_int = &kvm->arch.float_int;
- spin_lock_bh(&kvm->arch.float_int.lock);
+ spin_lock(&kvm->arch.float_int.lock);
kvm->arch.float_int.local_int[id] = &vcpu->arch.local_int;
init_waitqueue_head(&vcpu->arch.local_int.wq);
vcpu->arch.local_int.cpuflags = &vcpu->arch.sie_block->cpuflags;
- spin_unlock_bh(&kvm->arch.float_int.lock);
+ spin_unlock(&kvm->arch.float_int.lock);
rc = kvm_vcpu_init(vcpu, kvm, id);
if (rc)
@@ -478,6 +487,12 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
vcpu_load(vcpu);
+ /* verify, that memory has been registered */
+ if (!vcpu->kvm->arch.guest_memsize) {
+ vcpu_put(vcpu);
+ return -EINVAL;
+ }
+
if (vcpu->sigset_active)
sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
@@ -657,6 +672,8 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
struct kvm_memory_slot old,
int user_alloc)
{
+ int i;
+
/* A few sanity checks. We can have exactly one memory slot which has
to start at guest virtual zero and which has to be located at a
page boundary in userland and which has to end at a page boundary.
@@ -664,7 +681,7 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
vmas. It is okay to mmap() and munmap() stuff in this slot after
doing this call at any time */
- if (mem->slot)
+ if (mem->slot || kvm->arch.guest_memsize)
return -EINVAL;
if (mem->guest_phys_addr)
@@ -676,15 +693,39 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
if (mem->memory_size & (PAGE_SIZE - 1))
return -EINVAL;
+ if (!user_alloc)
+ return -EINVAL;
+
+ /* lock all vcpus */
+ for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+ if (!kvm->vcpus[i])
+ continue;
+ if (!mutex_trylock(&kvm->vcpus[i]->mutex))
+ goto fail_out;
+ }
+
kvm->arch.guest_origin = mem->userspace_addr;
kvm->arch.guest_memsize = mem->memory_size;
- /* FIXME: we do want to interrupt running CPUs and update their memory
- configuration now to avoid race conditions. But hey, changing the
- memory layout while virtual CPUs are running is usually bad
- programming practice. */
+ /* update sie control blocks, and unlock all vcpus */
+ for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+ if (kvm->vcpus[i]) {
+ kvm->vcpus[i]->arch.sie_block->gmsor =
+ kvm->arch.guest_origin;
+ kvm->vcpus[i]->arch.sie_block->gmslm =
+ kvm->arch.guest_memsize +
+ kvm->arch.guest_origin +
+ VIRTIODESCSPACE - 1ul;
+ mutex_unlock(&kvm->vcpus[i]->mutex);
+ }
+ }
return 0;
+
+fail_out:
+ for (; i >= 0; i--)
+ mutex_unlock(&kvm->vcpus[i]->mutex);
+ return -EINVAL;
}
void kvm_arch_flush_shadow(struct kvm *kvm)
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index 00bbe69b78da..748fee872323 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -14,6 +14,7 @@
#ifndef ARCH_S390_KVM_S390_H
#define ARCH_S390_KVM_S390_H
+#include <linux/hrtimer.h>
#include <linux/kvm.h>
#include <linux/kvm_host.h>
@@ -41,7 +42,8 @@ static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu)
}
int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
-void kvm_s390_idle_wakeup(unsigned long data);
+enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
+void kvm_s390_tasklet(unsigned long parm);
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
int kvm_s390_inject_vm(struct kvm *kvm,
struct kvm_s390_interrupt *s390int);
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 4b88834b8dd8..93ecd06e1a74 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -204,11 +204,11 @@ static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
int cpus = 0;
int n;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
for (n = 0; n < KVM_MAX_VCPUS; n++)
if (fi->local_int[n])
cpus++;
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
/* deal with other level 3 hypervisors */
if (stsi(mem, 3, 2, 2) == -ENOSYS)
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index f27dbedf0866..36678835034d 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -52,7 +52,7 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
if (cpu_addr >= KVM_MAX_VCPUS)
return 3; /* not operational */
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
if (fi->local_int[cpu_addr] == NULL)
rc = 3; /* not operational */
else if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
@@ -64,7 +64,7 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
*reg |= SIGP_STAT_STOPPED;
rc = 1; /* status stored */
}
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
VCPU_EVENT(vcpu, 4, "sensed status of cpu %x rc %x", cpu_addr, rc);
return rc;
@@ -86,7 +86,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
inti->type = KVM_S390_INT_EMERGENCY;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 3; /* not operational */
@@ -102,7 +102,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
spin_unlock_bh(&li->lock);
rc = 0; /* order accepted */
unlock:
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
VCPU_EVENT(vcpu, 4, "sent sigp emerg to cpu %x", cpu_addr);
return rc;
}
@@ -123,7 +123,7 @@ static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int store)
inti->type = KVM_S390_SIGP_STOP;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 3; /* not operational */
@@ -142,7 +142,7 @@ static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int store)
spin_unlock_bh(&li->lock);
rc = 0; /* order accepted */
unlock:
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
VCPU_EVENT(vcpu, 4, "sent sigp stop to cpu %x", cpu_addr);
return rc;
}
@@ -188,7 +188,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
if (!inti)
return 2; /* busy */
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if ((cpu_addr >= KVM_MAX_VCPUS) || (li == NULL)) {
@@ -220,7 +220,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
out_li:
spin_unlock_bh(&li->lock);
out_fi:
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
return rc;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 23:29:23 +0000