Merge branch 'for-rmk-devel' of git://git.pengutronix.de/git/imx/linux-2.6 into devel

Conflicts:
	arch/arm/Kconfig
	arch/arm/Makefile

9 files changed, 65 insertions, 27 deletions

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index a2789e42e162..30da617d18e4 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3670,12 +3670,14 @@ int arch_setup_hpet_msi(unsigned int irq)
 {
         int ret;
         struct msi_msg msg;
+        struct irq_desc *desc = irq_to_desc(irq);
 
         ret = msi_compose_msg(NULL, irq, &msg);
         if (ret < 0)
                 return ret;
 
         hpet_msi_write(irq, &msg);
+        desc->status |= IRQ_MOVE_PCNTXT;
         set_irq_chip_and_handler_name(irq, &hpet_msi_type, handle_edge_irq,
                 "edge");
 
diff --git a/arch/x86/kernel/apic/nmi.c b/arch/x86/kernel/apic/nmi.c
index d6bd62407152..ce4fbfa315a1 100644
--- a/arch/x86/kernel/apic/nmi.c
+++ b/arch/x86/kernel/apic/nmi.c
@@ -138,7 +138,7 @@ int __init check_nmi_watchdog(void)
         if (!prev_nmi_count)
                 goto error;
 
-        alloc_cpumask_var(&backtrace_mask, GFP_KERNEL);
+        alloc_cpumask_var(&backtrace_mask, GFP_KERNEL|__GFP_ZERO);
         printk(KERN_INFO "Testing NMI watchdog ... ");
 
 #ifdef CONFIG_SMP
@@ -414,7 +414,8 @@ nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
                 touched = 1;
         }
 
-        if (cpumask_test_cpu(cpu, backtrace_mask)) {
+        /* We can be called before check_nmi_watchdog, hence NULL check. */
+        if (backtrace_mask != NULL && cpumask_test_cpu(cpu, backtrace_mask)) {
                 static DEFINE_SPINLOCK(lock);   /* Serialise the printks */
 
                 spin_lock(&lock);
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index de1a50af807b..2bda69352976 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -19,6 +19,7 @@
 #include <linux/timer.h>
 #include <linux/cpu.h>
 #include <linux/init.h>
+#include <linux/io.h>
 
 #include <asm/uv/uv_mmrs.h>
 #include <asm/uv/uv_hub.h>
@@ -34,6 +35,17 @@ DEFINE_PER_CPU(int, x2apic_extra_bits);
 
 static enum uv_system_type uv_system_type;
 
+static int early_get_nodeid(void)
+{
+        union uvh_node_id_u node_id;
+        unsigned long *mmr;
+
+        mmr = early_ioremap(UV_LOCAL_MMR_BASE | UVH_NODE_ID, sizeof(*mmr));
+        node_id.v = *mmr;
+        early_iounmap(mmr, sizeof(*mmr));
+        return node_id.s.node_id;
+}
+
 static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
         if (!strcmp(oem_id, "SGI")) {
@@ -42,6 +54,8 @@ static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
                 else if (!strcmp(oem_table_id, "UVX"))
                         uv_system_type = UV_X2APIC;
                 else if (!strcmp(oem_table_id, "UVH")) {
+                        __get_cpu_var(x2apic_extra_bits) =
+                                early_get_nodeid() << (UV_APIC_PNODE_SHIFT - 1);
                         uv_system_type = UV_NON_UNIQUE_APIC;
                         return 1;
                 }
@@ -638,6 +652,7 @@ void __init uv_system_init(void)
                 if (uv_node_to_blade[nid] >= 0)
                         continue;
                 paddr = node_start_pfn(nid) << PAGE_SHIFT;
+                paddr = uv_soc_phys_ram_to_gpa(paddr);
                 pnode = (paddr >> m_val) & pnode_mask;
                 blade = boot_pnode_to_blade(pnode);
                 uv_node_to_blade[nid] = blade;
diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
index 863f89568b1a..6fb0b359d2a5 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -239,9 +239,10 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
                  * Don't get the IP here because it's unlikely to
                  * have anything to do with the actual error location.
                  */
-
-                mce_log(&m);
-                add_taint(TAINT_MACHINE_CHECK);
+                if (!(flags & MCP_DONTLOG)) {
+                        mce_log(&m);
+                        add_taint(TAINT_MACHINE_CHECK);
+                }
 
                 /*
                  * Clear state for this bank.
@@ -452,13 +453,14 @@ void mce_log_therm_throt_event(__u64 status)
  */
 
 static int check_interval = 5 * 60; /* 5 minutes */
-static int next_interval; /* in jiffies */
+static DEFINE_PER_CPU(int, next_interval); /* in jiffies */
 static void mcheck_timer(unsigned long);
 static DEFINE_PER_CPU(struct timer_list, mce_timer);
 
 static void mcheck_timer(unsigned long data)
 {
         struct timer_list *t = &per_cpu(mce_timer, data);
+        int *n;
 
         WARN_ON(smp_processor_id() != data);
 
@@ -470,14 +472,14 @@ static void mcheck_timer(unsigned long data)
          * Alert userspace if needed.  If we logged an MCE, reduce the
          * polling interval, otherwise increase the polling interval.
          */
+        n = &__get_cpu_var(next_interval);
         if (mce_notify_user()) {
-                next_interval = max(next_interval/2, HZ/100);
+                *n = max(*n/2, HZ/100);
         } else {
-                next_interval = min(next_interval * 2,
-                                (int)round_jiffies_relative(check_interval*HZ));
+                *n = min(*n*2, (int)round_jiffies_relative(check_interval*HZ));
         }
 
-        t->expires = jiffies + next_interval;
+        t->expires = jiffies + *n;
         add_timer(t);
 }
 
@@ -584,7 +586,7 @@ static void mce_init(void *dummy)
          * Log the machine checks left over from the previous reset.
          */
         bitmap_fill(all_banks, MAX_NR_BANKS);
-        machine_check_poll(MCP_UC, &all_banks);
+        machine_check_poll(MCP_UC|(!mce_bootlog ? MCP_DONTLOG : 0), &all_banks);
 
         set_in_cr4(X86_CR4_MCE);
 
@@ -632,14 +634,13 @@ static void mce_cpu_features(struct cpuinfo_x86 *c)
 static void mce_init_timer(void)
 {
         struct timer_list *t = &__get_cpu_var(mce_timer);
+        int *n = &__get_cpu_var(next_interval);
 
-        /* data race harmless because everyone sets to the same value */
-        if (!next_interval)
-                next_interval = check_interval * HZ;
-        if (!next_interval)
+        *n = check_interval * HZ;
+        if (!*n)
                 return;
         setup_timer(t, mcheck_timer, smp_processor_id());
-        t->expires = round_jiffies(jiffies + next_interval);
+        t->expires = round_jiffies(jiffies + *n);
         add_timer(t);
 }
 
@@ -907,7 +908,6 @@ static void mce_cpu_restart(void *data)
 /* Reinit MCEs after user configuration changes */
 static void mce_restart(void)
 {
-        next_interval = check_interval * HZ;
         on_each_cpu(mce_cpu_restart, NULL, 1);
 }
 
@@ -1110,7 +1110,8 @@ static int __cpuinit mce_cpu_callback(struct notifier_block *nfb,
                 break;
         case CPU_DOWN_FAILED:
         case CPU_DOWN_FAILED_FROZEN:
-                t->expires = round_jiffies(jiffies + next_interval);
+                t->expires = round_jiffies(jiffies +
+                                                __get_cpu_var(next_interval));
                 add_timer_on(t, cpu);
                 smp_call_function_single(cpu, mce_reenable_cpu, &action, 1);
                 break;
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index a331ec38af9e..38946c6e8433 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -1410,7 +1410,10 @@ ENTRY(paranoid_exit)
 paranoid_swapgs:
         TRACE_IRQS_IRETQ 0
         SWAPGS_UNSAFE_STACK
+        RESTORE_ALL 8
+        jmp irq_return
 paranoid_restore:
+        TRACE_IRQS_IRETQ 0
         RESTORE_ALL 8
         jmp irq_return
 paranoid_userspace:
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 3f0019e0a229..81408b93f887 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -236,6 +236,10 @@ static void hpet_stop_counter(void)
         unsigned long cfg = hpet_readl(HPET_CFG);
         cfg &= ~HPET_CFG_ENABLE;
         hpet_writel(cfg, HPET_CFG);
+}
+
+static void hpet_reset_counter(void)
+{
         hpet_writel(0, HPET_COUNTER);
         hpet_writel(0, HPET_COUNTER + 4);
 }
@@ -250,6 +254,7 @@ static void hpet_start_counter(void)
 static void hpet_restart_counter(void)
 {
         hpet_stop_counter();
+        hpet_reset_counter();
         hpet_start_counter();
 }
 
@@ -309,7 +314,7 @@ static int hpet_setup_msi_irq(unsigned int irq);
 static void hpet_set_mode(enum clock_event_mode mode,
                           struct clock_event_device *evt, int timer)
 {
-        unsigned long cfg;
+        unsigned long cfg, cmp, now;
         uint64_t delta;
 
         switch (mode) {
@@ -317,12 +322,23 @@ static void hpet_set_mode(enum clock_event_mode mode,
                 hpet_stop_counter();
                 delta = ((uint64_t)(NSEC_PER_SEC/HZ)) * evt->mult;
                 delta >>= evt->shift;
+                now = hpet_readl(HPET_COUNTER);
+                cmp = now + (unsigned long) delta;
                 cfg = hpet_readl(HPET_Tn_CFG(timer));
                 /* Make sure we use edge triggered interrupts */
                 cfg &= ~HPET_TN_LEVEL;
                 cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC |
                        HPET_TN_SETVAL | HPET_TN_32BIT;
                 hpet_writel(cfg, HPET_Tn_CFG(timer));
+                hpet_writel(cmp, HPET_Tn_CMP(timer));
+                udelay(1);
+                /*
+                 * HPET on AMD 81xx needs a second write (with HPET_TN_SETVAL
+                 * cleared) to T0_CMP to set the period. The HPET_TN_SETVAL
+                 * bit is automatically cleared after the first write.
+                 * (See AMD-8111 HyperTransport I/O Hub Data Sheet,
+                 * Publication # 24674)
+                 */
                 hpet_writel((unsigned long) delta, HPET_Tn_CMP(timer));
                 hpet_start_counter();
                 hpet_print_config();
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index e95022e4f5d5..7563b31b4f03 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -261,8 +261,6 @@ static void old_ich_force_enable_hpet_user(struct pci_dev *dev)
 {
         if (hpet_force_user)
                 old_ich_force_enable_hpet(dev);
-        else
-                hpet_print_force_info();
 }
 
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1,
diff --git a/arch/x86/kernel/uv_time.c b/arch/x86/kernel/uv_time.c
index 2ffb6c53326e..583f11d5c480 100644
--- a/arch/x86/kernel/uv_time.c
+++ b/arch/x86/kernel/uv_time.c
@@ -29,7 +29,7 @@
 
 #define RTC_NAME                "sgi_rtc"
 
-static cycle_t uv_read_rtc(void);
+static cycle_t uv_read_rtc(struct clocksource *cs);
 static int uv_rtc_next_event(unsigned long, struct clock_event_device *);
 static void uv_rtc_timer_setup(enum clock_event_mode,
                                 struct clock_event_device *);
@@ -123,7 +123,7 @@ static int uv_setup_intr(int cpu, u64 expires)
         /* Initialize comparator value */
         uv_write_global_mmr64(pnode, UVH_INT_CMPB, expires);
 
-        return (expires < uv_read_rtc() && !uv_intr_pending(pnode));
+        return (expires < uv_read_rtc(NULL) && !uv_intr_pending(pnode));
 }
 
 /*
@@ -256,7 +256,7 @@ static int uv_rtc_unset_timer(int cpu)
 
         spin_lock_irqsave(&head->lock, flags);
 
-        if (head->next_cpu == bcpu && uv_read_rtc() >= *t)
+        if (head->next_cpu == bcpu && uv_read_rtc(NULL) >= *t)
                 rc = 1;
 
         *t = ULLONG_MAX;
@@ -278,7 +278,7 @@ static int uv_rtc_unset_timer(int cpu)
 /*
  * Read the RTC.
  */
-static cycle_t uv_read_rtc(void)
+static cycle_t uv_read_rtc(struct clocksource *cs)
 {
         return (cycle_t)uv_read_local_mmr(UVH_RTC);
 }
@@ -291,7 +291,7 @@ static int uv_rtc_next_event(unsigned long delta,
 {
         int ced_cpu = cpumask_first(ced->cpumask);
 
-        return uv_rtc_set_timer(ced_cpu, delta + uv_read_rtc());
+        return uv_rtc_set_timer(ced_cpu, delta + uv_read_rtc(NULL));
 }
 
 /*
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index 0a5b04aa98f1..c5ee17e8c6d9 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -89,7 +89,7 @@ int save_i387_xstate(void __user *buf)
 
         if (!used_math())
                 return 0;
-        clear_used_math(); /* trigger finit */
+
         if (task_thread_info(tsk)->status & TS_USEDFPU) {
                 /*
                  * Start with clearing the user buffer. This will present a
@@ -114,6 +114,8 @@ int save_i387_xstate(void __user *buf)
                         return -1;
         }
 
+        clear_used_math(); /* trigger finit */
+
         if (task_thread_info(tsk)->status & TS_XSAVE) {
                 struct _fpstate __user *fx = buf;
                 struct _xstate __user *x = buf;