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-rw-r--r--arch/s390/kernel/compat_linux.c38
-rw-r--r--arch/s390/kernel/compat_wrapper.S4
-rw-r--r--arch/s390/kernel/entry.S6
-rw-r--r--arch/s390/kernel/entry64.S6
-rw-r--r--arch/s390/kernel/head.S16
-rw-r--r--arch/s390/kernel/head64.S12
-rw-r--r--arch/s390/kernel/s390_ext.c16
-rw-r--r--arch/s390/kernel/setup.c12
-rw-r--r--arch/s390/kernel/smp.c10
9 files changed, 83 insertions, 37 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 614056222875..18610cea03a2 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -58,6 +58,7 @@
#include <linux/compat.h>
#include <linux/vfs.h>
#include <linux/ptrace.h>
+#include <linux/fadvise.h>
#include <asm/types.h>
#include <asm/ipc.h>
@@ -1043,3 +1044,40 @@ sys32_timer_create(clockid_t which_clock, struct compat_sigevent *se32,
return ret;
}
+
+/*
+ * 31 bit emulation wrapper functions for sys_fadvise64/fadvise64_64.
+ * These need to rewrite the advise values for POSIX_FADV_{DONTNEED,NOREUSE}
+ * because the 31 bit values differ from the 64 bit values.
+ */
+
+asmlinkage long
+sys32_fadvise64(int fd, loff_t offset, size_t len, int advise)
+{
+ if (advise == 4)
+ advise = POSIX_FADV_DONTNEED;
+ else if (advise == 5)
+ advise = POSIX_FADV_NOREUSE;
+ return sys_fadvise64(fd, offset, len, advise);
+}
+
+struct fadvise64_64_args {
+ int fd;
+ long long offset;
+ long long len;
+ int advice;
+};
+
+asmlinkage long
+sys32_fadvise64_64(struct fadvise64_64_args __user *args)
+{
+ struct fadvise64_64_args a;
+
+ if ( copy_from_user(&a, args, sizeof(a)) )
+ return -EFAULT;
+ if (a.advice == 4)
+ a.advice = POSIX_FADV_DONTNEED;
+ else if (a.advice == 5)
+ a.advice = POSIX_FADV_NOREUSE;
+ return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice);
+}
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index bf529739c8ab..799a98eac92d 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1251,12 +1251,12 @@ sys32_fadvise64_wrapper:
or %r3,%r4 # get low word of 64bit loff_t
llgfr %r4,%r5 # size_t (unsigned long)
lgfr %r5,%r6 # int
- jg sys_fadvise64
+ jg sys32_fadvise64
.globl sys32_fadvise64_64_wrapper
sys32_fadvise64_64_wrapper:
llgtr %r2,%r2 # struct fadvise64_64_args *
- jg s390_fadvise64_64
+ jg sys32_fadvise64_64
.globl sys32_clock_settime_wrapper
sys32_clock_settime_wrapper:
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 5b262b5d869f..1a271b16cb5c 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -690,9 +690,9 @@ mcck_int_handler:
bo BASED(0f)
spt __LC_LAST_UPDATE_TIMER # revalidate cpu timer
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_EXIT_TIMER
+ mvc __LC_ASYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
+ mvc __LC_SYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
+ mvc __LC_EXIT_TIMER(8),__LC_LAST_UPDATE_TIMER
0: tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
bno BASED(mcck_no_vtime) # no -> skip cleanup critical
tm __LC_MCK_OLD_PSW+1,0x01 # interrupting from user ?
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 57ca75d0ad7f..d9f22915008c 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -727,9 +727,9 @@ mcck_int_handler:
jo 0f
spt __LC_LAST_UPDATE_TIMER
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_EXIT_TIMER
+ mvc __LC_ASYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
+ mvc __LC_SYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
+ mvc __LC_EXIT_TIMER(8),__LC_LAST_UPDATE_TIMER
0: tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
jno mcck_no_vtime # no -> no timer update
tm __LC_MCK_OLD_PSW+1,0x01 # interrupting from user ?
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index fc8bf5e285f6..2710e66fefba 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -346,6 +346,13 @@ iplstart:
la %r2,.Lreset
lhi %r3,26
diag %r2,%r3,8
+ la %r5,.Lirb
+ stsch 0(%r5) # check if irq is pending
+ tm 30(%r5),0x0f # by verifying if any of the
+ bnz .Lwaitforirq # activity or status control
+ tm 31(%r5),0xff # bits is set in the schib
+ bz .Lnoreset
+.Lwaitforirq:
mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw
.Lwaitrdrirq:
lpsw .Lrdrwaitpsw
@@ -535,8 +542,13 @@ startup:basr %r13,0 # get base
lhi %r1,0
icm %r1,3,.Lscpincr1-PARMAREA(%r4) # use this one if != 0
jnz .Lscnd
- l %r1,.Lscpincr2-PARMAREA+4(%r4) # otherwise use this one
+ lhi %r1,0x800 # otherwise report 2GB
.Lscnd:
+ lhi %r3,0x800 # limit reported memory size to 2GB
+ cr %r1,%r3
+ jl .Lno2gb
+ lr %r1,%r3
+.Lno2gb:
xr %r3,%r3 # same logic
ic %r3,.Lscpa1-PARMAREA(%r4)
chi %r3,0x00
@@ -765,7 +777,7 @@ _stext: basr %r13,0 # get base
# check control registers
stctl %c0,%c15,0(%r15)
- oi 2(%r15),0x20 # enable sigp external interrupts
+ oi 2(%r15),0x40 # enable sigp emergency signal
oi 0(%r15),0x10 # switch on low address protection
lctl %c0,%c15,0(%r15)
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index f525c0c21250..9a8263a153cb 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -345,6 +345,13 @@ iplstart:
la %r2,.Lreset
lhi %r3,26
diag %r2,%r3,8
+ la %r5,.Lirb
+ stsch 0(%r5) # check if irq is pending
+ tm 30(%r5),0x0f # by verifying if any of the
+ bnz .Lwaitforirq # activity or status control
+ tm 31(%r5),0xff # bits is set in the schib
+ bz .Lnoreset
+.Lwaitforirq:
mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw
.Lwaitrdrirq:
lpsw .Lrdrwaitpsw
@@ -658,10 +665,8 @@ startup:basr %r13,0 # get base
#
la %r1,0f-.LPG1(%r13) # set program check address
stg %r1,__LC_PGM_NEW_PSW+8
- mvc __LC_DIAG44_OPCODE(8),.Lnop-.LPG1(%r13)
diag 0,0,0x44 # test diag 0x44
oi 7(%r12),32 # set diag44 flag
- mvc __LC_DIAG44_OPCODE(8),.Ldiag44-.LPG1(%r13)
0:
#
@@ -702,7 +707,6 @@ startup:basr %r13,0 # get base
.L4malign:.quad 0xffffffffffc00000
.Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8
.Lnop: .long 0x07000700
-.Ldiag44:.long 0x83000044
.org PARMAREA-64
.Lduct: .long 0,0,0,0,0,0,0,0
@@ -765,7 +769,7 @@ _stext: basr %r13,0 # get base
# check control registers
stctg %c0,%c15,0(%r15)
- oi 6(%r15),0x20 # enable sigp external interrupts
+ oi 6(%r15),0x40 # enable sigp emergency signal
oi 4(%r15),0x10 # switch on low address proctection
lctlg %c0,%c15,0(%r15)
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c
index 3bdd38ec71da..207bc511a6e3 100644
--- a/arch/s390/kernel/s390_ext.c
+++ b/arch/s390/kernel/s390_ext.c
@@ -19,7 +19,6 @@
#include <asm/irq.h>
/*
- * Simple hash strategy: index = code & 0xff;
* ext_int_hash[index] is the start of the list for all external interrupts
* that hash to this index. With the current set of external interrupts
* (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
@@ -27,6 +26,11 @@
*/
ext_int_info_t *ext_int_hash[256] = { 0, };
+static inline int ext_hash(__u16 code)
+{
+ return (code + (code >> 9)) & 0xff;
+}
+
int register_external_interrupt(__u16 code, ext_int_handler_t handler)
{
ext_int_info_t *p;
@@ -37,7 +41,7 @@ int register_external_interrupt(__u16 code, ext_int_handler_t handler)
return -ENOMEM;
p->code = code;
p->handler = handler;
- index = code & 0xff;
+ index = ext_hash(code);
p->next = ext_int_hash[index];
ext_int_hash[index] = p;
return 0;
@@ -52,7 +56,7 @@ int register_early_external_interrupt(__u16 code, ext_int_handler_t handler,
return -EINVAL;
p->code = code;
p->handler = handler;
- index = code & 0xff;
+ index = ext_hash(code);
p->next = ext_int_hash[index];
ext_int_hash[index] = p;
return 0;
@@ -63,7 +67,7 @@ int unregister_external_interrupt(__u16 code, ext_int_handler_t handler)
ext_int_info_t *p, *q;
int index;
- index = code & 0xff;
+ index = ext_hash(code);
q = NULL;
p = ext_int_hash[index];
while (p != NULL) {
@@ -90,7 +94,7 @@ int unregister_early_external_interrupt(__u16 code, ext_int_handler_t handler,
if (p == NULL || p->code != code || p->handler != handler)
return -EINVAL;
- index = code & 0xff;
+ index = ext_hash(code);
q = ext_int_hash[index];
if (p != q) {
while (q != NULL) {
@@ -120,7 +124,7 @@ void do_extint(struct pt_regs *regs, unsigned short code)
*/
account_ticks(regs);
kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
- index = code & 0xff;
+ index = ext_hash(code);
for (p = ext_int_hash[index]; p; p = p->next) {
if (likely(p->code == code)) {
if (likely(p->handler))
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index b6d740ac0e6e..5ba5a5485da9 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -299,24 +299,18 @@ void machine_restart(char *command)
_machine_restart(command);
}
-EXPORT_SYMBOL(machine_restart);
-
void machine_halt(void)
{
console_unblank();
_machine_halt();
}
-EXPORT_SYMBOL(machine_halt);
-
void machine_power_off(void)
{
console_unblank();
_machine_power_off();
}
-EXPORT_SYMBOL(machine_power_off);
-
static void __init
add_memory_hole(unsigned long start, unsigned long end)
{
@@ -437,12 +431,6 @@ setup_lowcore(void)
ctl_set_bit(14, 29);
}
#endif
-#ifdef CONFIG_ARCH_S390X
- if (MACHINE_HAS_DIAG44)
- lc->diag44_opcode = 0x83000044;
- else
- lc->diag44_opcode = 0x07000700;
-#endif /* CONFIG_ARCH_S390X */
set_prefix((u32)(unsigned long) lc);
}
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 642572a8e334..da77f001af8d 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -375,7 +375,7 @@ static void smp_ext_bitcall(int cpu, ec_bit_sig sig)
* Set signaling bit in lowcore of target cpu and kick it
*/
set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast);
- while(signal_processor(cpu, sigp_external_call) == sigp_busy)
+ while(signal_processor(cpu, sigp_emergency_signal) == sigp_busy)
udelay(10);
}
@@ -394,7 +394,7 @@ static void smp_ext_bitcall_others(ec_bit_sig sig)
* Set signaling bit in lowcore of target cpu and kick it
*/
set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast);
- while (signal_processor(cpu, sigp_external_call) == sigp_busy)
+ while (signal_processor(cpu, sigp_emergency_signal) == sigp_busy)
udelay(10);
}
}
@@ -751,9 +751,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
unsigned int cpu;
int i;
- /* request the 0x1202 external interrupt */
- if (register_external_interrupt(0x1202, do_ext_call_interrupt) != 0)
- panic("Couldn't request external interrupt 0x1202");
+ /* request the 0x1201 emergency signal external interrupt */
+ if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0)
+ panic("Couldn't request external interrupt 0x1201");
smp_check_cpus(max_cpus);
memset(lowcore_ptr,0,sizeof(lowcore_ptr));
/*
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-29 13:40:48 +0000