Merge tag 'v3.3-rc7' into x86/platform

Merge reason: Update to the almost-final v3.3 kernel.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

15 files changed, 44 insertions, 27 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index d172758..6d99a5f 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -227,6 +227,9 @@ config COMPAT
 config SYSVIPC_COMPAT
 	def_bool y if COMPAT && SYSVIPC
 
+config KEYS_COMPAT
+	def_bool y if COMPAT && KEYS
+
 config AUDIT_ARCH
 	def_bool y
 
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index e9f3533..0ad2f1e 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -88,7 +88,6 @@ KBUILD_CFLAGS	+= -pipe -fno-strength-reduce -Wno-sign-compare
 KBUILD_AFLAGS	+= $(aflags-y)
 
 OBJCOPYFLAGS	:= -O binary
-LDFLAGS_vmlinux := -e start
 
 head-y		:= arch/s390/kernel/head.o
 head-y		+= arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index 2e49748b..234f1d8 100644
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -172,13 +172,6 @@ static inline int is_compat_task(void)
 	return is_32bit_task();
 }
 
-#else
-
-static inline int is_compat_task(void)
-{
-	return 0;
-}
-
 #endif
 
 static inline void __user *arch_compat_alloc_user_space(long len)
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 18c51df..ff605a3 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -662,7 +662,7 @@ ENTRY(sys32_getresuid16_wrapper)
 ENTRY(sys32_poll_wrapper)
 	llgtr	%r2,%r2			# struct pollfd *
 	llgfr	%r3,%r3			# unsigned int
-	lgfr	%r4,%r4			# long
+	lgfr	%r4,%r4			# int
 	jg	sys_poll		# branch to system call
 
 ENTRY(sys32_setresgid16_wrapper)
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index 39f8fd4..c383ce4 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -11,7 +11,6 @@
 #include <linux/module.h>
 #include <linux/gfp.h>
 #include <linux/slab.h>
-#include <linux/crash_dump.h>
 #include <linux/bootmem.h>
 #include <linux/elf.h>
 #include <asm/ipl.h>
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 3201ae4..e795933 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -29,7 +29,6 @@
 #include <asm/irq.h>
 #include <asm/timer.h>
 #include <asm/nmi.h>
-#include <asm/compat.h>
 #include <asm/smp.h>
 #include "entry.h"
 
@@ -76,7 +75,6 @@ static void default_idle(void)
 	if (test_thread_flag(TIF_MCCK_PENDING)) {
 		local_mcck_enable();
 		local_irq_enable();
-		s390_handle_mcck();
 		return;
 	}
 	trace_hardirqs_on();
@@ -93,10 +91,12 @@ void cpu_idle(void)
 	for (;;) {
 		tick_nohz_idle_enter();
 		rcu_idle_enter();
-		while (!need_resched())
+		while (!need_resched() && !test_thread_flag(TIF_MCCK_PENDING))
 			default_idle();
 		rcu_idle_exit();
 		tick_nohz_idle_exit();
+		if (test_thread_flag(TIF_MCCK_PENDING))
+			s390_handle_mcck();
 		preempt_enable_no_resched();
 		schedule();
 		preempt_disable();
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 9d82ed4..61f9548 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -20,8 +20,8 @@
 #include <linux/regset.h>
 #include <linux/tracehook.h>
 #include <linux/seccomp.h>
+#include <linux/compat.h>
 #include <trace/syscall.h>
-#include <asm/compat.h>
 #include <asm/segment.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 354de07..3b2efc8 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -46,6 +46,7 @@
 #include <linux/kexec.h>
 #include <linux/crash_dump.h>
 #include <linux/memory.h>
+#include <linux/compat.h>
 
 #include <asm/ipl.h>
 #include <asm/uaccess.h>
@@ -59,7 +60,6 @@
 #include <asm/ptrace.h>
 #include <asm/sections.h>
 #include <asm/ebcdic.h>
-#include <asm/compat.h>
 #include <asm/kvm_virtio.h>
 #include <asm/diag.h>
 
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index a8ba840..2d421d9 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -30,7 +30,6 @@
 #include <asm/ucontext.h>
 #include <asm/uaccess.h>
 #include <asm/lowcore.h>
-#include <asm/compat.h>
 #include "entry.h"
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index fa02f44..14da278 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -113,11 +113,14 @@ static void fixup_clock_comparator(unsigned long long delta)
 static int s390_next_ktime(ktime_t expires,
 			   struct clock_event_device *evt)
 {
+	struct timespec ts;
 	u64 nsecs;
 
-	nsecs = ktime_to_ns(ktime_sub(expires, ktime_get_monotonic_offset()));
+	ts.tv_sec = ts.tv_nsec = 0;
+	monotonic_to_bootbased(&ts);
+	nsecs = ktime_to_ns(ktime_add(timespec_to_ktime(ts), expires));
 	do_div(nsecs, 125);
-	S390_lowcore.clock_comparator = TOD_UNIX_EPOCH + (nsecs << 9);
+	S390_lowcore.clock_comparator = sched_clock_base_cc + (nsecs << 9);
 	set_clock_comparator(S390_lowcore.clock_comparator);
 	return 0;
 }
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index e4c79eb..21109c6 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -9,12 +9,12 @@
 #ifndef CONFIG_64BIT
 OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
 OUTPUT_ARCH(s390)
-ENTRY(_start)
+ENTRY(startup)
 jiffies = jiffies_64 + 4;
 #else
 OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
 OUTPUT_ARCH(s390:64-bit)
-ENTRY(_start)
+ENTRY(startup)
 jiffies = jiffies_64;
 #endif
 
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 354dd39..e8fcd92 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -36,7 +36,6 @@
 #include <asm/pgtable.h>
 #include <asm/irq.h>
 #include <asm/mmu_context.h>
-#include <asm/compat.h>
 #include "../kernel/entry.h"
 
 #ifndef CONFIG_64BIT
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 5d63301..5023661 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -223,16 +223,38 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 #ifdef CONFIG_MEMORY_HOTPLUG
 int arch_add_memory(int nid, u64 start, u64 size)
 {
-	struct pglist_data *pgdat;
+	unsigned long zone_start_pfn, zone_end_pfn, nr_pages;
+	unsigned long start_pfn = PFN_DOWN(start);
+	unsigned long size_pages = PFN_DOWN(size);
 	struct zone *zone;
 	int rc;
 
-	pgdat = NODE_DATA(nid);
-	zone = pgdat->node_zones + ZONE_MOVABLE;
 	rc = vmem_add_mapping(start, size);
 	if (rc)
 		return rc;
-	rc = __add_pages(nid, zone, PFN_DOWN(start), PFN_DOWN(size));
+	for_each_zone(zone) {
+		if (zone_idx(zone) != ZONE_MOVABLE) {
+			/* Add range within existing zone limits */
+			zone_start_pfn = zone->zone_start_pfn;
+			zone_end_pfn = zone->zone_start_pfn +
+				       zone->spanned_pages;
+		} else {
+			/* Add remaining range to ZONE_MOVABLE */
+			zone_start_pfn = start_pfn;
+			zone_end_pfn = start_pfn + size_pages;
+		}
+		if (start_pfn < zone_start_pfn || start_pfn >= zone_end_pfn)
+			continue;
+		nr_pages = (start_pfn + size_pages > zone_end_pfn) ?
+			   zone_end_pfn - start_pfn : size_pages;
+		rc = __add_pages(nid, zone, start_pfn, nr_pages);
+		if (rc)
+			break;
+		start_pfn += nr_pages;
+		size_pages -= nr_pages;
+		if (!size_pages)
+			break;
+	}
 	if (rc)
 		vmem_remove_mapping(start, size);
 	return rc;
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index f09c748..a0155c0 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -29,8 +29,8 @@
 #include <linux/mman.h>
 #include <linux/module.h>
 #include <linux/random.h>
+#include <linux/compat.h>
 #include <asm/pgalloc.h>
-#include <asm/compat.h>
 
 static unsigned long stack_maxrandom_size(void)
 {
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 9a4d02f..51b0738 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -574,7 +574,7 @@ static inline void page_table_free_pgste(unsigned long *table)
 	page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
 	mp = (struct gmap_pgtable *) page->index;
 	BUG_ON(!list_empty(&mp->mapper));
-	pgtable_page_ctor(page);
+	pgtable_page_dtor(page);
 	atomic_set(&page->_mapcount, -1);
 	kfree(mp);
 	__free_page(page);