Merge pull request #68 from torvalds/master

Sync up with Linus

Documentation/kernel-parameters.txt

@@ -3787,6 +3787,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 					READ_CAPACITY_16 command);
 				f = NO_REPORT_OPCODES (don't use report opcodes
 					command, uas only);
+				g = MAX_SECTORS_240 (don't transfer more than
+					240 sectors at a time, uas only);
 				h = CAPACITY_HEURISTICS (decrease the
 					reported device capacity by one
 					sector if the number is odd);

Documentation/module-signing.txt

@@ -119,9 +119,9 @@ Most notably, in the x509.genkey file, the req_distinguished_name section
 should be altered from the default:
 
 	[ req_distinguished_name ]
-	O = Magrathea
-	CN = Glacier signing key
-	emailAddress = [email protected]
+	#O = Unspecified company
+	CN = Build time autogenerated kernel key
+	#emailAddress = [email protected]
 
 The generated RSA key size can also be set with:
 

Documentation/networking/mpls-sysctl.txt

@@ -18,3 +18,12 @@ platform_labels - INTEGER
 
 	Possible values: 0 - 1048575
 	Default: 0
+
+conf/<interface>/input - BOOL
+	Control whether packets can be input on this interface.
+
+	If disabled, packets will be discarded without further
+	processing.
+
+	0 - disabled (default)
+	not 0 - enabled

Documentation/networking/scaling.txt

@@ -282,7 +282,7 @@ following is true:
 
 - The current CPU's queue head counter >= the recorded tail counter
   value in rps_dev_flow[i]
-- The current CPU is unset (equal to RPS_NO_CPU)
+- The current CPU is unset (>= nr_cpu_ids)
 - The current CPU is offline
 
 After this check, the packet is sent to the (possibly updated) current

Documentation/powerpc/transactional_memory.txt

@@ -74,23 +74,22 @@ Causes of transaction aborts
 Syscalls
 ========
 
-Syscalls made from within an active transaction will not be performed and the
-transaction will be doomed by the kernel with the failure code TM_CAUSE_SYSCALL
-| TM_CAUSE_PERSISTENT.
+Performing syscalls from within transaction is not recommended, and can lead
+to unpredictable results.
 
-Syscalls made from within a suspended transaction are performed as normal and
-the transaction is not explicitly doomed by the kernel.  However, what the
-kernel does to perform the syscall may result in the transaction being doomed
-by the hardware.  The syscall is performed in suspended mode so any side
-effects will be persistent, independent of transaction success or failure.  No
-guarantees are provided by the kernel about which syscalls will affect
-transaction success.
+Syscalls do not by design abort transactions, but beware: The kernel code will
+not be running in transactional state.  The effect of syscalls will always
+remain visible, but depending on the call they may abort your transaction as a
+side-effect, read soon-to-be-aborted transactional data that should not remain
+invisible, etc.  If you constantly retry a transaction that constantly aborts
+itself by calling a syscall, you'll have a livelock & make no progress.
 
-Care must be taken when relying on syscalls to abort during active transactions
-if the calls are made via a library.  Libraries may cache values (which may
-give the appearance of success) or perform operations that cause transaction
-failure before entering the kernel (which may produce different failure codes).
-Examples are glibc's getpid() and lazy symbol resolution.
+Simple syscalls (e.g. sigprocmask()) "could" be OK.  Even things like write()
+from, say, printf() should be OK as long as the kernel does not access any
+memory that was accessed transactionally.
+
+Consider any syscalls that happen to work as debug-only -- not recommended for
+production use.  Best to queue them up till after the transaction is over.
 
 
 Signals
@@ -177,7 +176,8 @@ kernel aborted a transaction:
  TM_CAUSE_RESCHED       Thread was rescheduled.
  TM_CAUSE_TLBI          Software TLB invalid.
  TM_CAUSE_FAC_UNAV      FP/VEC/VSX unavailable trap.
- TM_CAUSE_SYSCALL       Syscall from active transaction.
+ TM_CAUSE_SYSCALL       Currently unused; future syscalls that must abort
+                        transactions for consistency will use this.
  TM_CAUSE_SIGNAL        Signal delivered.
  TM_CAUSE_MISC          Currently unused.
  TM_CAUSE_ALIGNMENT     Alignment fault.

MAINTAINERS

@@ -3413,6 +3413,13 @@ F:	drivers/gpu/drm/rcar-du/
 F:	drivers/gpu/drm/shmobile/
 F:	include/linux/platform_data/shmob_drm.h
 
+DRM DRIVERS FOR ROCKCHIP
+M:	Mark Yao <[email protected]>
+L:	[email protected]
+S:	Maintained
+F:	drivers/gpu/drm/rockchip/
+F:	Documentation/devicetree/bindings/video/rockchip*
+
 DSBR100 USB FM RADIO DRIVER
 M:	Alexey Klimov <[email protected]>
 L:	[email protected]
@@ -10523,7 +10530,6 @@ F:	include/linux/virtio_console.h
 F:	include/uapi/linux/virtio_console.h
 
 VIRTIO CORE, NET AND BLOCK DRIVERS
-M:	Rusty Russell <[email protected]>
 M:	"Michael S. Tsirkin" <[email protected]>
 L:	[email protected]
 S:	Maintained

Makefile

@@ -1,7 +1,7 @@
 VERSION = 4
 PATCHLEVEL = 1
 SUBLEVEL = 0
-EXTRAVERSION = -rc1
+EXTRAVERSION = -rc2
 NAME = Hurr durr I'ma sheep
 
 # *DOCUMENTATION*

arch/arm64/Kconfig

@@ -31,6 +31,7 @@ config ARM64
 	select GENERIC_EARLY_IOREMAP
 	select GENERIC_IRQ_PROBE
 	select GENERIC_IRQ_SHOW
+	select GENERIC_IRQ_SHOW_LEVEL
 	select GENERIC_PCI_IOMAP
 	select GENERIC_SCHED_CLOCK
 	select GENERIC_SMP_IDLE_THREAD

arch/arm64/include/asm/barrier.h

@@ -65,6 +65,14 @@ do {									\
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	switch (sizeof(*p)) {						\
+	case 1:								\
+		asm volatile ("stlrb %w1, %0"				\
+				: "=Q" (*p) : "r" (v) : "memory");	\
+		break;							\
+	case 2:								\
+		asm volatile ("stlrh %w1, %0"				\
+				: "=Q" (*p) : "r" (v) : "memory");	\
+		break;							\
 	case 4:								\
 		asm volatile ("stlr %w1, %0"				\
 				: "=Q" (*p) : "r" (v) : "memory");	\
@@ -81,6 +89,14 @@ do {									\
 	typeof(*p) ___p1;						\
 	compiletime_assert_atomic_type(*p);				\
 	switch (sizeof(*p)) {						\
+	case 1:								\
+		asm volatile ("ldarb %w0, %1"				\
+			: "=r" (___p1) : "Q" (*p) : "memory");		\
+		break;							\
+	case 2:								\
+		asm volatile ("ldarh %w0, %1"				\
+			: "=r" (___p1) : "Q" (*p) : "memory");		\
+		break;							\
 	case 4:								\
 		asm volatile ("ldar %w0, %1"				\
 			: "=r" (___p1) : "Q" (*p) : "memory");		\

arch/arm64/kernel/perf_event.c

@@ -1310,7 +1310,7 @@ static const struct of_device_id armpmu_of_device_ids[] = {
 
 static int armpmu_device_probe(struct platform_device *pdev)
 {
-	int i, *irqs;
+	int i, irq, *irqs;
 
 	if (!cpu_pmu)
 		return -ENODEV;
@@ -1319,6 +1319,11 @@ static int armpmu_device_probe(struct platform_device *pdev)
 	if (!irqs)
 		return -ENOMEM;
 
+	/* Don't bother with PPIs; they're already affine */
+	irq = platform_get_irq(pdev, 0);
+	if (irq >= 0 && irq_is_percpu(irq))
+		return 0;
+
 	for (i = 0; i < pdev->num_resources; ++i) {
 		struct device_node *dn;
 		int cpu;
@@ -1327,7 +1332,7 @@ static int armpmu_device_probe(struct platform_device *pdev)
 				      i);
 		if (!dn) {
 			pr_warn("Failed to parse %s/interrupt-affinity[%d]\n",
-				of_node_full_name(dn), i);
+				of_node_full_name(pdev->dev.of_node), i);
 			break;
 		}
 

arch/arm64/mm/dma-mapping.c

@@ -67,8 +67,7 @@ static void *__alloc_from_pool(size_t size, struct page **ret_page, gfp_t flags)
 
 		*ret_page = phys_to_page(phys);
 		ptr = (void *)val;
-		if (flags & __GFP_ZERO)
-			memset(ptr, 0, size);
+		memset(ptr, 0, size);
 	}
 
 	return ptr;
@@ -105,16 +104,14 @@ static void *__dma_alloc_coherent(struct device *dev, size_t size,
 		struct page *page;
 		void *addr;
 
-		size = PAGE_ALIGN(size);
 		page = dma_alloc_from_contiguous(dev, size >> PAGE_SHIFT,
 							get_order(size));
 		if (!page)
 			return NULL;
 
 		*dma_handle = phys_to_dma(dev, page_to_phys(page));
 		addr = page_address(page);
-		if (flags & __GFP_ZERO)
-			memset(addr, 0, size);
+		memset(addr, 0, size);
 		return addr;
 	} else {
 		return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
@@ -195,6 +192,8 @@ static void __dma_free(struct device *dev, size_t size,
 {
 	void *swiotlb_addr = phys_to_virt(dma_to_phys(dev, dma_handle));
 
+	size = PAGE_ALIGN(size);
+
 	if (!is_device_dma_coherent(dev)) {
 		if (__free_from_pool(vaddr, size))
 			return;

arch/powerpc/include/uapi/asm/tm.h

@@ -11,7 +11,7 @@
 #define TM_CAUSE_RESCHED	0xde
 #define TM_CAUSE_TLBI		0xdc
 #define TM_CAUSE_FAC_UNAV	0xda
-#define TM_CAUSE_SYSCALL	0xd8
+#define TM_CAUSE_SYSCALL	0xd8  /* future use */
 #define TM_CAUSE_MISC		0xd6  /* future use */
 #define TM_CAUSE_SIGNAL		0xd4
 #define TM_CAUSE_ALIGNMENT	0xd2

arch/powerpc/kernel/eeh.c

@@ -749,21 +749,24 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state stat
 		eeh_unfreeze_pe(pe, false);
 		eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
 		eeh_pe_dev_traverse(pe, eeh_restore_dev_state, dev);
+		eeh_pe_state_clear(pe, EEH_PE_ISOLATED);
 		break;
 	case pcie_hot_reset:
+		eeh_pe_state_mark(pe, EEH_PE_ISOLATED);
 		eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE);
 		eeh_pe_dev_traverse(pe, eeh_disable_and_save_dev_state, dev);
 		eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
 		eeh_ops->reset(pe, EEH_RESET_HOT);
 		break;
 	case pcie_warm_reset:
+		eeh_pe_state_mark(pe, EEH_PE_ISOLATED);
 		eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE);
 		eeh_pe_dev_traverse(pe, eeh_disable_and_save_dev_state, dev);
 		eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
 		eeh_ops->reset(pe, EEH_RESET_FUNDAMENTAL);
 		break;
 	default:
-		eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
+		eeh_pe_state_clear(pe, EEH_PE_ISOLATED | EEH_PE_CFG_BLOCKED);
 		return -EINVAL;
 	};
 
@@ -1058,6 +1061,9 @@ void eeh_add_device_early(struct pci_dn *pdn)
 	if (!edev || !eeh_enabled())
 		return;
 
+	if (!eeh_has_flag(EEH_PROBE_MODE_DEVTREE))
+		return;
+
 	/* USB Bus children of PCI devices will not have BUID's */
 	phb = edev->phb;
 	if (NULL == phb ||
@@ -1112,6 +1118,9 @@ void eeh_add_device_late(struct pci_dev *dev)
 		return;
 	}
 
+	if (eeh_has_flag(EEH_PROBE_MODE_DEV))
+		eeh_ops->probe(pdn, NULL);
+
 	/*
 	 * The EEH cache might not be removed correctly because of
 	 * unbalanced kref to the device during unplug time, which

arch/powerpc/kernel/entry_64.S

@@ -34,7 +34,6 @@
 #include <asm/ftrace.h>
 #include <asm/hw_irq.h>
 #include <asm/context_tracking.h>
-#include <asm/tm.h>
 
 /*
  * System calls.
@@ -146,24 +145,6 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
 	andi.	r11,r10,_TIF_SYSCALL_DOTRACE
 	bne	syscall_dotrace
 .Lsyscall_dotrace_cont:
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
-BEGIN_FTR_SECTION
-	b	1f
-END_FTR_SECTION_IFCLR(CPU_FTR_TM)
-	extrdi.	r11, r12, 1, (63-MSR_TS_T_LG) /* transaction active? */
-	beq+	1f
-
-	/* Doom the transaction and don't perform the syscall: */
-	mfmsr	r11
-	li	r12, 1
-	rldimi	r11, r12, MSR_TM_LG, 63-MSR_TM_LG
-	mtmsrd	r11, 0
-	li	r11, (TM_CAUSE_SYSCALL|TM_CAUSE_PERSISTENT)
-	TABORT(R11)
-
-	b	.Lsyscall_exit
-1:
-#endif
 	cmpldi	0,r0,NR_syscalls
 	bge-	syscall_enosys
 

arch/powerpc/kernel/idle_power7.S

@@ -501,9 +501,11 @@ BEGIN_FTR_SECTION
 	CHECK_HMI_INTERRUPT
 END_FTR_SECTION_IFSET(CPU_FTR_HVMODE)
 	ld	r1,PACAR1(r13)
+	ld	r6,_CCR(r1)
 	ld	r4,_MSR(r1)
 	ld	r5,_NIP(r1)
 	addi	r1,r1,INT_FRAME_SIZE
+	mtcr	r6
 	mtspr	SPRN_SRR1,r4
 	mtspr	SPRN_SRR0,r5
 	rfid

arch/powerpc/kvm/book3s_xics.c

@@ -12,6 +12,7 @@
 #include <linux/err.h>
 #include <linux/gfp.h>
 #include <linux/anon_inodes.h>
+#include <linux/spinlock.h>
 
 #include <asm/uaccess.h>
 #include <asm/kvm_book3s.h>
@@ -20,7 +21,6 @@
 #include <asm/xics.h>
 #include <asm/debug.h>
 #include <asm/time.h>
-#include <asm/spinlock.h>
 
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>

arch/powerpc/platforms/powernv/pci-ioda.c

@@ -2693,7 +2693,6 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 		hose->last_busno = 0xff;
 	}
 	hose->private_data = phb;
-	hose->controller_ops = pnv_pci_controller_ops;
 	phb->hub_id = hub_id;
 	phb->opal_id = phb_id;
 	phb->type = ioda_type;
@@ -2812,6 +2811,7 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 	pnv_pci_controller_ops.enable_device_hook = pnv_pci_enable_device_hook;
 	pnv_pci_controller_ops.window_alignment = pnv_pci_window_alignment;
 	pnv_pci_controller_ops.reset_secondary_bus = pnv_pci_reset_secondary_bus;
+	hose->controller_ops = pnv_pci_controller_ops;
 
 #ifdef CONFIG_PCI_IOV
 	ppc_md.pcibios_fixup_sriov = pnv_pci_ioda_fixup_iov_resources;

arch/powerpc/platforms/pseries/dlpar.c

@@ -412,6 +412,10 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count)
 	if (rc)
 		return -EINVAL;
 
+	rc = dlpar_acquire_drc(drc_index);
+	if (rc)
+		return -EINVAL;
+
 	parent = of_find_node_by_path("/cpus");
 	if (!parent)
 		return -ENODEV;
@@ -422,12 +426,6 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count)
 
 	of_node_put(parent);
 
-	rc = dlpar_acquire_drc(drc_index);
-	if (rc) {
-		dlpar_free_cc_nodes(dn);
-		return -EINVAL;
-	}
-
 	rc = dlpar_attach_node(dn);
 	if (rc) {
 		dlpar_release_drc(drc_index);

arch/s390/Kconfig

@@ -115,7 +115,7 @@ config S390
 	select HAVE_ARCH_SECCOMP_FILTER
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
-	select HAVE_BPF_JIT if PACK_STACK && HAVE_MARCH_Z9_109_FEATURES
+	select HAVE_BPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES
 	select HAVE_CMPXCHG_DOUBLE
 	select HAVE_CMPXCHG_LOCAL
 	select HAVE_DEBUG_KMEMLEAK