---

yaml
---
r: 26750
b: refs/heads/master
c: 4fbca53
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3170a5e80be7db29ab5ccb6b4145cf28b4a156de
+refs/heads/master: 4fbca5320eb102d2e15bdeffe79e125c11cf925e

trunk/arch/i386/kernel/acpi/boot.c

@@ -1066,6 +1066,14 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
 		     DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
 		     },
 	 },
+	{
+	 .callback = disable_acpi_pci,
+	 .ident = "HP xw9300",
+	 .matches = {
+		    DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		    DMI_MATCH(DMI_PRODUCT_NAME, "HP xw9300 Workstation"),
+		    },
+	},
 	{}
 };
 

trunk/arch/powerpc/kernel/prom_init.c

@@ -1636,7 +1636,7 @@ static int __init prom_find_machine_type(void)
 			   compat, sizeof(compat)-1);
 	if (len <= 0)
 		return PLATFORM_GENERIC;
-	if (strncmp(compat, RELOC("chrp"), 4))
+	if (strcmp(compat, RELOC("chrp")))
 		return PLATFORM_GENERIC;
 
 	/* Default to pSeries. We need to know if we are running LPAR */

trunk/arch/powerpc/platforms/pseries/setup.c

@@ -255,7 +255,7 @@ static int __init pSeries_init_panel(void)
 {
 	/* Manually leave the kernel version on the panel. */
 	ppc_md.progress("Linux ppc64\n", 0);
-	ppc_md.progress(system_utsname.version, 0);
+	ppc_md.progress(system_utsname.release, 0);
 
 	return 0;
 }

trunk/arch/x86_64/kernel/pci-nommu.c

@@ -12,9 +12,10 @@ static int
 check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size)
 {
         if (hwdev && bus + size > *hwdev->dma_mask) {
-		printk(KERN_ERR
-		    "nommu_%s: overflow %Lx+%lu of device mask %Lx\n",
-	       name, (long long)bus, size, (long long)*hwdev->dma_mask);
+		if (*hwdev->dma_mask >= 0xffffffffULL)
+			printk(KERN_ERR
+			    "nommu_%s: overflow %Lx+%lu of device mask %Lx\n",
+	       			name, (long long)bus, size, (long long)*hwdev->dma_mask);
 		return 0;
 	}
 	return 1;

trunk/arch/x86_64/kernel/traps.c

@@ -102,6 +102,8 @@ static inline void preempt_conditional_cli(struct pt_regs *regs)
 {
 	if (regs->eflags & X86_EFLAGS_IF)
 		local_irq_disable();
+	/* Make sure to not schedule here because we could be running
+	   on an exception stack. */
 	preempt_enable_no_resched();
 }
 
@@ -483,8 +485,6 @@ static void __kprobes do_trap(int trapnr, int signr, char *str,
 {
 	struct task_struct *tsk = current;
 
-	conditional_sti(regs);
-
 	tsk->thread.error_code = error_code;
 	tsk->thread.trap_no = trapnr;
 
@@ -521,6 +521,7 @@ asmlinkage void do_##name(struct pt_regs * regs, long error_code) \
 	if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
 							== NOTIFY_STOP) \
 		return; \
+	conditional_sti(regs);						\
 	do_trap(trapnr, signr, str, regs, error_code, NULL); \
 }
 
@@ -535,6 +536,7 @@ asmlinkage void do_##name(struct pt_regs * regs, long error_code) \
 	if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
 							== NOTIFY_STOP) \
 		return; \
+	conditional_sti(regs);						\
 	do_trap(trapnr, signr, str, regs, error_code, &info); \
 }
 
@@ -548,7 +550,17 @@ DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS)
 DO_ERROR(11, SIGBUS,  "segment not present", segment_not_present)
 DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0)
 DO_ERROR(18, SIGSEGV, "reserved", reserved)
-DO_ERROR(12, SIGBUS,  "stack segment", stack_segment)
+
+/* Runs on IST stack */
+asmlinkage void do_stack_segment(struct pt_regs *regs, long error_code)
+{
+	if (notify_die(DIE_TRAP, "stack segment", regs, error_code,
+			12, SIGBUS) == NOTIFY_STOP)
+		return;
+	preempt_conditional_sti(regs);
+	do_trap(12, SIGBUS, "stack segment", regs, error_code, NULL);
+	preempt_conditional_cli(regs);
+}
 
 asmlinkage void do_double_fault(struct pt_regs * regs, long error_code)
 {
@@ -682,8 +694,9 @@ asmlinkage void __kprobes do_int3(struct pt_regs * regs, long error_code)
 	if (notify_die(DIE_INT3, "int3", regs, error_code, 3, SIGTRAP) == NOTIFY_STOP) {
 		return;
 	}
+	preempt_conditional_sti(regs);
 	do_trap(3, SIGTRAP, "int3", regs, error_code, NULL);
-	return;
+	preempt_conditional_cli(regs);
 }
 
 /* Help handler running on IST stack to switch back to user stack

trunk/arch/x86_64/mm/srat.c

@@ -34,7 +34,10 @@ static nodemask_t nodes_found __initdata;
 static struct bootnode nodes[MAX_NUMNODES] __initdata;
 static struct bootnode nodes_add[MAX_NUMNODES] __initdata;
 static int found_add_area __initdata;
-int hotadd_percent __initdata = 10;
+int hotadd_percent __initdata = 0;
+#ifndef RESERVE_HOTADD
+#define hotadd_percent 0	/* Ignore all settings */
+#endif
 static u8 pxm2node[256] = { [0 ... 255] = 0xff };
 
 /* Too small nodes confuse the VM badly. Usually they result
@@ -103,6 +106,7 @@ static __init void bad_srat(void)
 	int i;
 	printk(KERN_ERR "SRAT: SRAT not used.\n");
 	acpi_numa = -1;
+	found_add_area = 0;
 	for (i = 0; i < MAX_LOCAL_APIC; i++)
 		apicid_to_node[i] = NUMA_NO_NODE;
 	for (i = 0; i < MAX_NUMNODES; i++)
@@ -154,7 +158,8 @@ acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa)
 	int pxm, node;
 	if (srat_disabled())
 		return;
-	if (pa->header.length != sizeof(struct acpi_table_processor_affinity)) {		bad_srat();
+	if (pa->header.length != sizeof(struct acpi_table_processor_affinity)) {
+		bad_srat();
 		return;
 	}
 	if (pa->flags.enabled == 0)
@@ -191,15 +196,17 @@ static int hotadd_enough_memory(struct bootnode *nd)
 	allowed = (end_pfn - e820_hole_size(0, end_pfn)) * PAGE_SIZE;
 	allowed = (allowed / 100) * hotadd_percent;
 	if (allocated + mem > allowed) {
+		unsigned long range;
 		/* Give them at least part of their hotadd memory upto hotadd_percent
 		   It would be better to spread the limit out
 		   over multiple hotplug areas, but that is too complicated
 		   right now */
 		if (allocated >= allowed)
 			return 0;
-		pages = (allowed - allocated + mem) / sizeof(struct page);
+		range = allowed - allocated;
+		pages = (range / PAGE_SIZE);
 		mem = pages * sizeof(struct page);
-		nd->end = nd->start + pages*PAGE_SIZE;
+		nd->end = nd->start + range;
 	}
 	/* Not completely fool proof, but a good sanity check */
 	addr = find_e820_area(last_area_end, end_pfn<<PAGE_SHIFT, mem);

trunk/drivers/net/b44.c

@@ -650,18 +650,22 @@ static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
 
 	/* Hardware bug work-around, the chip is unable to do PCI DMA
 	   to/from anything above 1GB :-( */
-	if (mapping + RX_PKT_BUF_SZ > B44_DMA_MASK) {
+	if (dma_mapping_error(mapping) ||
+		mapping + RX_PKT_BUF_SZ > B44_DMA_MASK) {
 		/* Sigh... */
-		pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE);
+		if (!dma_mapping_error(mapping))
+			pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE);
 		dev_kfree_skb_any(skb);
 		skb = __dev_alloc_skb(RX_PKT_BUF_SZ,GFP_DMA);
 		if (skb == NULL)
 			return -ENOMEM;
 		mapping = pci_map_single(bp->pdev, skb->data,
 					 RX_PKT_BUF_SZ,
 					 PCI_DMA_FROMDEVICE);
-		if (mapping + RX_PKT_BUF_SZ > B44_DMA_MASK) {
-			pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE);
+		if (dma_mapping_error(mapping) ||
+			mapping + RX_PKT_BUF_SZ > B44_DMA_MASK) {
+			if (!dma_mapping_error(mapping))
+				pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE);
 			dev_kfree_skb_any(skb);
 			return -ENOMEM;
 		}
@@ -967,9 +971,10 @@ static int b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	}
 
 	mapping = pci_map_single(bp->pdev, skb->data, len, PCI_DMA_TODEVICE);
-	if (mapping + len > B44_DMA_MASK) {
+	if (dma_mapping_error(mapping) || mapping + len > B44_DMA_MASK) {
 		/* Chip can't handle DMA to/from >1GB, use bounce buffer */
-		pci_unmap_single(bp->pdev, mapping, len, PCI_DMA_TODEVICE);
+		if (!dma_mapping_error(mapping))
+			pci_unmap_single(bp->pdev, mapping, len, PCI_DMA_TODEVICE);
 
 		bounce_skb = __dev_alloc_skb(TX_PKT_BUF_SZ,
 					     GFP_ATOMIC|GFP_DMA);
@@ -978,8 +983,9 @@ static int b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 		mapping = pci_map_single(bp->pdev, bounce_skb->data,
 					 len, PCI_DMA_TODEVICE);
-		if (mapping + len > B44_DMA_MASK) {
-			pci_unmap_single(bp->pdev, mapping,
+		if (dma_mapping_error(mapping) || mapping + len > B44_DMA_MASK) {
+			if (!dma_mapping_error(mapping))
+				pci_unmap_single(bp->pdev, mapping,
 					 len, PCI_DMA_TODEVICE);
 			dev_kfree_skb_any(bounce_skb);
 			goto err_out;
@@ -1203,7 +1209,8 @@ static int b44_alloc_consistent(struct b44 *bp)
 		                             DMA_TABLE_BYTES,
 		                             DMA_BIDIRECTIONAL);
 
-		if (rx_ring_dma + size > B44_DMA_MASK) {
+		if (dma_mapping_error(rx_ring_dma) ||
+			rx_ring_dma + size > B44_DMA_MASK) {
 			kfree(rx_ring);
 			goto out_err;
 		}
@@ -1229,7 +1236,8 @@ static int b44_alloc_consistent(struct b44 *bp)
 		                             DMA_TABLE_BYTES,
 		                             DMA_TO_DEVICE);
 
-		if (tx_ring_dma + size > B44_DMA_MASK) {
+		if (dma_mapping_error(tx_ring_dma) ||
+			tx_ring_dma + size > B44_DMA_MASK) {
 			kfree(tx_ring);
 			goto out_err;
 		}

trunk/drivers/serial/serial_core.c

@@ -1907,9 +1907,12 @@ uart_set_options(struct uart_port *port, struct console *co,
 static void uart_change_pm(struct uart_state *state, int pm_state)
 {
 	struct uart_port *port = state->port;
-	if (port->ops->pm)
-		port->ops->pm(port, pm_state, state->pm_state);
-	state->pm_state = pm_state;
+
+	if (state->pm_state != pm_state) {
+		if (port->ops->pm)
+			port->ops->pm(port, pm_state, state->pm_state);
+		state->pm_state = pm_state;
+	}
 }
 
 int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)

trunk/mm/slab.c

@@ -2200,11 +2200,14 @@ static void drain_cpu_caches(struct kmem_cache *cachep)
 	check_irq_on();
 	for_each_online_node(node) {
 		l3 = cachep->nodelists[node];
-		if (l3) {
+		if (l3 && l3->alien)
+			drain_alien_cache(cachep, l3->alien);
+	}
+
+	for_each_online_node(node) {
+		l3 = cachep->nodelists[node];
+		if (l3)
 			drain_array(cachep, l3, l3->shared, 1, node);
-			if (l3->alien)
-				drain_alien_cache(cachep, l3->alien);
-		}
 	}
 }