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-rw-r--r--arch/s390/kernel/compat_ptrace.h1
-rw-r--r--arch/s390/kernel/compat_wrapper.S37
-rw-r--r--arch/s390/kernel/ipl.c5
-rw-r--r--arch/s390/kernel/mem_detect.c23
-rw-r--r--arch/s390/kernel/process.c4
-rw-r--r--arch/s390/kernel/ptrace.c28
-rw-r--r--arch/s390/kernel/smp.c2
-rw-r--r--arch/s390/kernel/syscalls.S6
-rw-r--r--arch/s390/kernel/time.c4
-rw-r--r--arch/s390/kernel/vmlinux.lds.S2
10 files changed, 83 insertions, 29 deletions
diff --git a/arch/s390/kernel/compat_ptrace.h b/arch/s390/kernel/compat_ptrace.h
index cde81fa64f8..a2be3a978d5 100644
--- a/arch/s390/kernel/compat_ptrace.h
+++ b/arch/s390/kernel/compat_ptrace.h
@@ -42,6 +42,7 @@ struct user_regs_struct32
u32 gprs[NUM_GPRS];
u32 acrs[NUM_ACRS];
u32 orig_gpr2;
+ /* nb: there's a 4-byte hole here */
s390_fp_regs fp_regs;
/*
* These per registers are in here so that gdb can modify them
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index d003a6e16af..328a20e880b 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1732,3 +1732,40 @@ compat_sys_timerfd_gettime_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # struct compat_itimerspec *
jg compat_sys_timerfd_gettime
+
+ .globl compat_sys_signalfd4_wrapper
+compat_sys_signalfd4_wrapper:
+ lgfr %r2,%r2 # int
+ llgtr %r3,%r3 # compat_sigset_t *
+ llgfr %r4,%r4 # compat_size_t
+ lgfr %r5,%r5 # int
+ jg compat_sys_signalfd4
+
+ .globl sys_eventfd2_wrapper
+sys_eventfd2_wrapper:
+ llgfr %r2,%r2 # unsigned int
+ lgfr %r3,%r3 # int
+ jg sys_eventfd2
+
+ .globl sys_inotify_init1_wrapper
+sys_inotify_init1_wrapper:
+ lgfr %r2,%r2 # int
+ jg sys_inotify_init1
+
+ .globl sys_pipe2_wrapper
+sys_pipe2_wrapper:
+ llgtr %r2,%r2 # u32 *
+ lgfr %r3,%r3 # int
+ jg sys_pipe2 # branch to system call
+
+ .globl sys_dup3_wrapper
+sys_dup3_wrapper:
+ llgfr %r2,%r2 # unsigned int
+ llgfr %r3,%r3 # unsigned int
+ lgfr %r4,%r4 # int
+ jg sys_dup3 # branch to system call
+
+ .globl sys_epoll_create1_wrapper
+sys_epoll_create1_wrapper:
+ lgfr %r2,%r2 # int
+ jg sys_epoll_create1 # branch to system call
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 54b2779b5e2..2dcf590faba 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1705,7 +1705,10 @@ void __init setup_ipl(void)
void __init ipl_update_parameters(void)
{
- if (diag308(DIAG308_STORE, &ipl_block) == DIAG308_RC_OK)
+ int rc;
+
+ rc = diag308(DIAG308_STORE, &ipl_block);
+ if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG))
diag308_set_works = 1;
}
diff --git a/arch/s390/kernel/mem_detect.c b/arch/s390/kernel/mem_detect.c
index 18ed7abe16c..9872999c66d 100644
--- a/arch/s390/kernel/mem_detect.c
+++ b/arch/s390/kernel/mem_detect.c
@@ -9,27 +9,6 @@
#include <asm/sclp.h>
#include <asm/setup.h>
-static int memory_fast_detect(struct mem_chunk *chunk)
-{
- unsigned long val0 = 0;
- unsigned long val1 = 0xc;
- int rc = -EOPNOTSUPP;
-
- if (ipl_flags & IPL_NSS_VALID)
- return -EOPNOTSUPP;
- asm volatile(
- " diag %1,%2,0x260\n"
- "0: lhi %0,0\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "+d" (rc), "+d" (val0), "+d" (val1) : : "cc");
-
- if (rc || val0 != val1)
- return -EOPNOTSUPP;
- chunk->size = val0 + 1;
- return 0;
-}
-
static inline int tprot(unsigned long addr)
{
int rc = -EFAULT;
@@ -84,8 +63,6 @@ void detect_memory_layout(struct mem_chunk chunk[])
unsigned long flags, cr0;
memset(chunk, 0, MEMORY_CHUNKS * sizeof(struct mem_chunk));
- if (memory_fast_detect(&chunk[0]) == 0)
- return;
/* Disable IRQs, DAT and low address protection so tprot does the
* right thing and we don't get scheduled away with low address
* protection disabled.
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 9839767d084..3e2c05cb6a8 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -75,7 +75,9 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return sf->gprs[8];
}
-DEFINE_PER_CPU(struct s390_idle_data, s390_idle);
+DEFINE_PER_CPU(struct s390_idle_data, s390_idle) = {
+ .lock = __SPIN_LOCK_UNLOCKED(s390_idle.lock)
+};
static int s390_idle_enter(void)
{
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 2815bfe348a..c8b08289eb8 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -170,6 +170,13 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr)
*/
tmp = (addr_t) task_pt_regs(child)->orig_gpr2;
+ } else if (addr < (addr_t) &dummy->regs.fp_regs) {
+ /*
+ * prevent reads of padding hole between
+ * orig_gpr2 and fp_regs on s390.
+ */
+ tmp = 0;
+
} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@@ -270,6 +277,13 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
*/
task_pt_regs(child)->orig_gpr2 = data;
+ } else if (addr < (addr_t) &dummy->regs.fp_regs) {
+ /*
+ * prevent writes of padding hole between
+ * orig_gpr2 and fp_regs on s390.
+ */
+ return 0;
+
} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@@ -428,6 +442,13 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr)
*/
tmp = *(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4);
+ } else if (addr < (addr_t) &dummy32->regs.fp_regs) {
+ /*
+ * prevent reads of padding hole between
+ * orig_gpr2 and fp_regs on s390.
+ */
+ tmp = 0;
+
} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@@ -514,6 +535,13 @@ static int __poke_user_compat(struct task_struct *child,
*/
*(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4) = tmp;
+ } else if (addr < (addr_t) &dummy32->regs.fp_regs) {
+ /*
+ * prevent writess of padding hole between
+ * orig_gpr2 and fp_regs on s390.
+ */
+ return 0;
+
} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index b795b3e24af..00b9b4dec5e 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -610,7 +610,6 @@ static void __init smp_create_idle(unsigned int cpu)
if (IS_ERR(p))
panic("failed fork for CPU %u: %li", cpu, PTR_ERR(p));
current_set[cpu] = p;
- spin_lock_init(&(&per_cpu(s390_idle, cpu))->lock);
}
static int __cpuinit smp_alloc_lowcore(int cpu)
@@ -845,7 +844,6 @@ void __init smp_prepare_boot_cpu(void)
current_set[0] = current;
smp_cpu_state[0] = CPU_STATE_CONFIGURED;
smp_cpu_polarization[0] = POLARIZATION_UNKNWN;
- spin_lock_init(&(&__get_cpu_var(s390_idle))->lock);
}
void __init smp_cpus_done(unsigned int max_cpus)
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index c87ec687d4c..c66d35e5514 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -330,3 +330,9 @@ SYSCALL(sys_eventfd,sys_eventfd,sys_eventfd_wrapper)
SYSCALL(sys_timerfd_create,sys_timerfd_create,sys_timerfd_create_wrapper)
SYSCALL(sys_timerfd_settime,sys_timerfd_settime,compat_sys_timerfd_settime_wrapper) /* 320 */
SYSCALL(sys_timerfd_gettime,sys_timerfd_gettime,compat_sys_timerfd_gettime_wrapper)
+SYSCALL(sys_signalfd4,sys_signalfd4,compat_sys_signalfd4_wrapper)
+SYSCALL(sys_eventfd2,sys_eventfd2,sys_eventfd2_wrapper)
+SYSCALL(sys_inotify_init1,sys_inotify_init1,sys_inotify_init1_wrapper)
+SYSCALL(sys_pipe2,sys_pipe2,sys_pipe2_wrapper) /* 325 */
+SYSCALL(sys_dup3,sys_dup3,sys_dup3_wrapper)
+SYSCALL(sys_epoll_create1,sys_epoll_create1,sys_epoll_create1_wrapper)
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index ab70d9bd926..06acb1a18bb 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -169,6 +169,8 @@ void init_cpu_timer(void)
static void clock_comparator_interrupt(__u16 code)
{
+ if (S390_lowcore.clock_comparator == -1ULL)
+ set_clock_comparator(S390_lowcore.clock_comparator);
}
static void etr_timing_alert(struct etr_irq_parm *);
@@ -1348,7 +1350,7 @@ early_param("stp", early_parse_stp);
/*
* Reset STP attachment.
*/
-static void stp_reset(void)
+static void __init stp_reset(void)
{
int rc;
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 76c1e60c92f..607bd67a18c 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -55,7 +55,7 @@ SECTIONS
__start___ex_table = .;
*(__ex_table)
__stop___ex_table = .;
- }
+ } :data
.data : { /* Data */
DATA_DATA
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-25 09:15:17 +0000