[GIT PULL] s390 patches for 3.2-rc3
From: Martin Schwidefsky
Date: Wed Nov 16 2011 - 04:30:58 EST
Hi Linus,
please pull from 'for-linus' branch of
git://git390.marist.edu/pub/scm/linux-2.6.git for-linus
to receive the following updates:
Heiko Carstens (3):
[S390] wire up process_vm syscalls
[S390] pfault: ignore leftover completion interrupts
[S390] topology: fix topology on z10 machines
Holger Dengler (1):
[S390] ap: Setup processing for messages in request queue.
Jan Glauber (2):
[S390] avoid STCKF if running in ESA mode
[S390] crypto: avoid MSA3 and MSA4 instructions in ESA mode
Martin Schwidefsky (2):
[S390] fix pgste update logic
[S390] incorrect note program header
Michael Holzheu (2):
[S390] Kconfig: Select CONFIG_KEXEC for CONFIG_CRASH_DUMP
[S390] zfcpdump: Do not initialize zfcpdump in kdump mode
arch/s390/Kconfig | 1 +
arch/s390/crypto/crypt_s390.h | 7 ++++-
arch/s390/include/asm/pgtable.h | 12 +++++++--
arch/s390/include/asm/setup.h | 3 ++
arch/s390/include/asm/timex.h | 2 +-
arch/s390/include/asm/unistd.h | 4 ++-
arch/s390/kernel/compat_wrapper.S | 20 ++++++++++++++++
arch/s390/kernel/early.c | 2 +
arch/s390/kernel/setup.c | 4 ++-
arch/s390/kernel/syscalls.S | 2 +
arch/s390/kernel/topology.c | 45 +++++++++++++++++++++++++++++++-----
arch/s390/kernel/vmlinux.lds.S | 2 +
arch/s390/mm/fault.c | 9 +++++-
drivers/s390/char/zcore.c | 2 +
drivers/s390/crypto/ap_bus.c | 23 ++++++++++++++-----
15 files changed, 115 insertions(+), 23 deletions(-)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index a9fbd43..373679b 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -572,6 +572,7 @@ config KEXEC
config CRASH_DUMP
bool "kernel crash dumps"
depends on 64BIT
+ select KEXEC
help
Generate crash dump after being started by kexec.
Crash dump kernels are loaded in the main kernel with kexec-tools
diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
index 4967677..ffd1ac2 100644
--- a/arch/s390/crypto/crypt_s390.h
+++ b/arch/s390/crypto/crypt_s390.h
@@ -368,9 +368,12 @@ static inline int crypt_s390_func_available(int func,
if (facility_mask & CRYPT_S390_MSA && !test_facility(17))
return 0;
- if (facility_mask & CRYPT_S390_MSA3 && !test_facility(76))
+
+ if (facility_mask & CRYPT_S390_MSA3 &&
+ (!test_facility(2) || !test_facility(76)))
return 0;
- if (facility_mask & CRYPT_S390_MSA4 && !test_facility(77))
+ if (facility_mask & CRYPT_S390_MSA4 &&
+ (!test_facility(2) || !test_facility(77)))
return 0;
switch (func & CRYPT_S390_OP_MASK) {
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 34ede0e..524d23b 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -593,6 +593,8 @@ static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste)
unsigned long address, bits;
unsigned char skey;
+ if (!pte_present(*ptep))
+ return pgste;
address = pte_val(*ptep) & PAGE_MASK;
skey = page_get_storage_key(address);
bits = skey & (_PAGE_CHANGED | _PAGE_REFERENCED);
@@ -625,6 +627,8 @@ static inline pgste_t pgste_update_young(pte_t *ptep, pgste_t pgste)
#ifdef CONFIG_PGSTE
int young;
+ if (!pte_present(*ptep))
+ return pgste;
young = page_reset_referenced(pte_val(*ptep) & PAGE_MASK);
/* Transfer page referenced bit to pte software bit (host view) */
if (young || (pgste_val(pgste) & RCP_HR_BIT))
@@ -638,13 +642,15 @@ static inline pgste_t pgste_update_young(pte_t *ptep, pgste_t pgste)
}
-static inline void pgste_set_pte(pte_t *ptep, pgste_t pgste)
+static inline void pgste_set_pte(pte_t *ptep, pgste_t pgste, pte_t entry)
{
#ifdef CONFIG_PGSTE
unsigned long address;
unsigned long okey, nkey;
- address = pte_val(*ptep) & PAGE_MASK;
+ if (!pte_present(entry))
+ return;
+ address = pte_val(entry) & PAGE_MASK;
okey = nkey = page_get_storage_key(address);
nkey &= ~(_PAGE_ACC_BITS | _PAGE_FP_BIT);
/* Set page access key and fetch protection bit from pgste */
@@ -712,7 +718,7 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
if (mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
- pgste_set_pte(ptep, pgste);
+ pgste_set_pte(ptep, pgste, entry);
*ptep = entry;
pgste_set_unlock(ptep, pgste);
} else
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 5a09971..097183c 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -82,6 +82,7 @@ extern unsigned int user_mode;
#define MACHINE_FLAG_LPAR (1UL << 12)
#define MACHINE_FLAG_SPP (1UL << 13)
#define MACHINE_FLAG_TOPOLOGY (1UL << 14)
+#define MACHINE_FLAG_STCKF (1UL << 15)
#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
@@ -100,6 +101,7 @@ extern unsigned int user_mode;
#define MACHINE_HAS_PFMF (0)
#define MACHINE_HAS_SPP (0)
#define MACHINE_HAS_TOPOLOGY (0)
+#define MACHINE_HAS_STCKF (0)
#else /* __s390x__ */
#define MACHINE_HAS_IEEE (1)
#define MACHINE_HAS_CSP (1)
@@ -111,6 +113,7 @@ extern unsigned int user_mode;
#define MACHINE_HAS_PFMF (S390_lowcore.machine_flags & MACHINE_FLAG_PFMF)
#define MACHINE_HAS_SPP (S390_lowcore.machine_flags & MACHINE_FLAG_SPP)
#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
+#define MACHINE_HAS_STCKF (S390_lowcore.machine_flags & MACHINE_FLAG_STCKF)
#endif /* __s390x__ */
#define ZFCPDUMP_HSA_SIZE (32UL<<20)
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index d610bef..c447a27 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -90,7 +90,7 @@ static inline unsigned long long get_clock_fast(void)
{
unsigned long long clk;
- if (test_facility(25))
+ if (MACHINE_HAS_STCKF)
asm volatile(".insn s,0xb27c0000,%0" : "=Q" (clk) : : "cc");
else
clk = get_clock();
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index 404bdb9..58de4c9 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -277,7 +277,9 @@
#define __NR_clock_adjtime 337
#define __NR_syncfs 338
#define __NR_setns 339
-#define NR_syscalls 340
+#define __NR_process_vm_readv 340
+#define __NR_process_vm_writev 341
+#define NR_syscalls 342
/*
* There are some system calls that are not present on 64 bit, some
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 5006a1d..18c51df 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1627,3 +1627,23 @@ ENTRY(sys_setns_wrapper)
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int
jg sys_setns
+
+ENTRY(compat_sys_process_vm_readv_wrapper)
+ lgfr %r2,%r2 # compat_pid_t
+ llgtr %r3,%r3 # struct compat_iovec __user *
+ llgfr %r4,%r4 # unsigned long
+ llgtr %r5,%r5 # struct compat_iovec __user *
+ llgfr %r6,%r6 # unsigned long
+ llgf %r0,164(%r15) # unsigned long
+ stg %r0,160(%r15)
+ jg sys_process_vm_readv
+
+ENTRY(compat_sys_process_vm_writev_wrapper)
+ lgfr %r2,%r2 # compat_pid_t
+ llgtr %r3,%r3 # struct compat_iovec __user *
+ llgfr %r4,%r4 # unsigned long
+ llgtr %r5,%r5 # struct compat_iovec __user *
+ llgfr %r6,%r6 # unsigned long
+ llgf %r0,164(%r15) # unsigned long
+ stg %r0,160(%r15)
+ jg sys_process_vm_writev
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 37394b3..c9ffe00 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -390,6 +390,8 @@ static __init void detect_machine_facilities(void)
S390_lowcore.machine_flags |= MACHINE_FLAG_MVCOS;
if (test_facility(40))
S390_lowcore.machine_flags |= MACHINE_FLAG_SPP;
+ if (test_facility(25))
+ S390_lowcore.machine_flags |= MACHINE_FLAG_STCKF;
#endif
}
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 8ac6bfa..e58a462 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -211,6 +211,8 @@ static void __init setup_zfcpdump(unsigned int console_devno)
if (ipl_info.type != IPL_TYPE_FCP_DUMP)
return;
+ if (OLDMEM_BASE)
+ return;
if (console_devno != -1)
sprintf(str, " cio_ignore=all,!0.0.%04x,!0.0.%04x",
ipl_info.data.fcp.dev_id.devno, console_devno);
@@ -482,7 +484,7 @@ static void __init setup_memory_end(void)
#ifdef CONFIG_ZFCPDUMP
- if (ipl_info.type == IPL_TYPE_FCP_DUMP) {
+ if (ipl_info.type == IPL_TYPE_FCP_DUMP && !OLDMEM_BASE) {
memory_end = ZFCPDUMP_HSA_SIZE;
memory_end_set = 1;
}
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 73eb08c..bcab2f0 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -348,3 +348,5 @@ SYSCALL(sys_open_by_handle_at,sys_open_by_handle_at,compat_sys_open_by_handle_at
SYSCALL(sys_clock_adjtime,sys_clock_adjtime,compat_sys_clock_adjtime_wrapper)
SYSCALL(sys_syncfs,sys_syncfs,sys_syncfs_wrapper)
SYSCALL(sys_setns,sys_setns,sys_setns_wrapper)
+SYSCALL(sys_process_vm_readv,sys_process_vm_readv,compat_sys_process_vm_readv_wrapper) /* 340 */
+SYSCALL(sys_process_vm_writev,sys_process_vm_writev,compat_sys_process_vm_writev_wrapper)
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 77b8942..fdb5b8c 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -68,8 +68,10 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
return mask;
}
-static void add_cpus_to_mask(struct topology_cpu *tl_cpu,
- struct mask_info *book, struct mask_info *core)
+static struct mask_info *add_cpus_to_mask(struct topology_cpu *tl_cpu,
+ struct mask_info *book,
+ struct mask_info *core,
+ int z10)
{
unsigned int cpu;
@@ -88,10 +90,16 @@ static void add_cpus_to_mask(struct topology_cpu *tl_cpu,
cpu_book_id[lcpu] = book->id;
#endif
cpumask_set_cpu(lcpu, &core->mask);
- cpu_core_id[lcpu] = core->id;
+ if (z10) {
+ cpu_core_id[lcpu] = rcpu;
+ core = core->next;
+ } else {
+ cpu_core_id[lcpu] = core->id;
+ }
smp_cpu_polarization[lcpu] = tl_cpu->pp;
}
}
+ return core;
}
static void clear_masks(void)
@@ -123,18 +131,41 @@ static void tl_to_cores(struct sysinfo_15_1_x *info)
{
#ifdef CONFIG_SCHED_BOOK
struct mask_info *book = &book_info;
+ struct cpuid cpu_id;
#else
struct mask_info *book = NULL;
#endif
struct mask_info *core = &core_info;
union topology_entry *tle, *end;
+ int z10 = 0;
-
+#ifdef CONFIG_SCHED_BOOK
+ get_cpu_id(&cpu_id);
+ z10 = cpu_id.machine == 0x2097 || cpu_id.machine == 0x2098;
+#endif
spin_lock_irq(&topology_lock);
clear_masks();
tle = info->tle;
end = (union topology_entry *)((unsigned long)info + info->length);
while (tle < end) {
+#ifdef CONFIG_SCHED_BOOK
+ if (z10) {
+ switch (tle->nl) {
+ case 1:
+ book = book->next;
+ book->id = tle->container.id;
+ break;
+ case 0:
+ core = add_cpus_to_mask(&tle->cpu, book, core, z10);
+ break;
+ default:
+ clear_masks();
+ goto out;
+ }
+ tle = next_tle(tle);
+ continue;
+ }
+#endif
switch (tle->nl) {
#ifdef CONFIG_SCHED_BOOK
case 2:
@@ -147,7 +178,7 @@ static void tl_to_cores(struct sysinfo_15_1_x *info)
core->id = tle->container.id;
break;
case 0:
- add_cpus_to_mask(&tle->cpu, book, core);
+ add_cpus_to_mask(&tle->cpu, book, core, z10);
break;
default:
clear_masks();
@@ -328,8 +359,8 @@ void __init s390_init_cpu_topology(void)
for (i = 0; i < TOPOLOGY_NR_MAG; i++)
printk(" %d", info->mag[i]);
printk(" / %d\n", info->mnest);
- alloc_masks(info, &core_info, 2);
+ alloc_masks(info, &core_info, 1);
#ifdef CONFIG_SCHED_BOOK
- alloc_masks(info, &book_info, 3);
+ alloc_masks(info, &book_info, 2);
#endif
}
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 56fe6bc..e4c79eb 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -43,6 +43,8 @@ SECTIONS
NOTES :text :note
+ .dummy : { *(.dummy) } :data
+
RODATA
#ifdef CONFIG_SHARED_KERNEL
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 1766def..a9a3018 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -587,8 +587,13 @@ static void pfault_interrupt(unsigned int ext_int_code,
} else {
/* Completion interrupt was faster than initial
* interrupt. Set pfault_wait to -1 so the initial
- * interrupt doesn't put the task to sleep. */
- tsk->thread.pfault_wait = -1;
+ * interrupt doesn't put the task to sleep.
+ * If the task is not running, ignore the completion
+ * interrupt since it must be a leftover of a PFAULT
+ * CANCEL operation which didn't remove all pending
+ * completion interrupts. */
+ if (tsk->state == TASK_RUNNING)
+ tsk->thread.pfault_wait = -1;
}
put_task_struct(tsk);
} else {
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 43068fb..1b6d924 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -641,6 +641,8 @@ static int __init zcore_init(void)
if (ipl_info.type != IPL_TYPE_FCP_DUMP)
return -ENODATA;
+ if (OLDMEM_BASE)
+ return -ENODATA;
zcore_dbf = debug_register("zcore", 4, 1, 4 * sizeof(long));
debug_register_view(zcore_dbf, &debug_sprintf_view);
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index b77ae51..ec94f04 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1271,18 +1271,16 @@ ap_config_timeout(unsigned long ptr)
}
/**
- * ap_schedule_poll_timer(): Schedule poll timer.
+ * __ap_schedule_poll_timer(): Schedule poll timer.
*
* Set up the timer to run the poll tasklet
*/
-static inline void ap_schedule_poll_timer(void)
+static inline void __ap_schedule_poll_timer(void)
{
ktime_t hr_time;
spin_lock_bh(&ap_poll_timer_lock);
- if (ap_using_interrupts() || ap_suspend_flag)
- goto out;
- if (hrtimer_is_queued(&ap_poll_timer))
+ if (hrtimer_is_queued(&ap_poll_timer) || ap_suspend_flag)
goto out;
if (ktime_to_ns(hrtimer_expires_remaining(&ap_poll_timer)) <= 0) {
hr_time = ktime_set(0, poll_timeout);
@@ -1294,6 +1292,18 @@ out:
}
/**
+ * ap_schedule_poll_timer(): Schedule poll timer.
+ *
+ * Set up the timer to run the poll tasklet
+ */
+static inline void ap_schedule_poll_timer(void)
+{
+ if (ap_using_interrupts())
+ return;
+ __ap_schedule_poll_timer();
+}
+
+/**
* ap_poll_read(): Receive pending reply messages from an AP device.
* @ap_dev: pointer to the AP device
* @flags: pointer to control flags, bit 2^0 is set if another poll is
@@ -1374,8 +1384,9 @@ static int ap_poll_write(struct ap_device *ap_dev, unsigned long *flags)
*flags |= 1;
*flags |= 2;
break;
- case AP_RESPONSE_Q_FULL:
case AP_RESPONSE_RESET_IN_PROGRESS:
+ __ap_schedule_poll_timer();
+ case AP_RESPONSE_Q_FULL:
*flags |= 2;
break;
case AP_RESPONSE_MESSAGE_TOO_BIG:
--
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