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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-21 10:48:56 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-21 10:48:56 -0400
commitdc303408a716e865099fcb3f83a90d9c51184c02 (patch)
tree5995a029e75a4955a6e1cfa38b5889422469cdb2
parentc4301c32663438afb8eac96db01944ad95c00260 (diff)
parente89dafb5ca5022d3bc63602018adfc766c73bc2b (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull more powerpc updates from Michael Ellerman: "Here's some more updates for powerpc for 3.18. They are a bit late I know, though must are actually bug fixes. In my defence I nearly cut the top of my finger off last weekend in a gruesome bike maintenance accident, so I spent a good part of the week waiting around for doctors. True story, I can send photos if you like :) Probably the most interesting fix is the sys_call_table one, which enables syscall tracing for powerpc. There's a fix for HMI handling for old firmware, more endian fixes for firmware interfaces, more EEH fixes, Anton fixed our routine that gets the current stack pointer, and a few other misc bits" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (22 commits) powerpc: Only do dynamic DMA zone limits on platforms that need it powerpc: sync pseries_le_defconfig with pseries_defconfig powerpc: Add printk levels to setup_system output powerpc/vphn: NUMA node code expects big-endian powerpc/msi: Use WARN_ON() in msi bitmap selftests powerpc/msi: Fix the msi bitmap alignment tests powerpc/eeh: Block CFG upon frozen Shiner adapter powerpc/eeh: Don't collect logs on PE with blocked config space powerpc/eeh: Block PCI config access upon frozen PE powerpc/pseries: Drop config requests in EEH accessors powerpc/powernv: Drop config requests in EEH accessors powerpc/eeh: Rename flag EEH_PE_RESET to EEH_PE_CFG_BLOCKED powerpc/eeh: Fix condition for isolated state powerpc/pseries: Make CPU hotplug path endian safe powerpc/pseries: Use dump_stack instead of show_stack powerpc: Rename __get_SP() to current_stack_pointer() powerpc: Reimplement __get_SP() as a function not a define powerpc/numa: Add ability to disable and debug topology updates powerpc/numa: check error return from proc_create powerpc/powernv: Fallback to old HMI handling behavior for old firmware ...
-rw-r--r--Documentation/kernel-parameters.txt6
-rw-r--r--arch/powerpc/configs/pseries_le_defconfig7
-rw-r--r--arch/powerpc/include/asm/eeh.h3
-rw-r--r--arch/powerpc/include/asm/perf_event.h2
-rw-r--r--arch/powerpc/include/asm/reg.h3
-rw-r--r--arch/powerpc/include/asm/syscall.h2
-rw-r--r--arch/powerpc/kernel/dma.c8
-rw-r--r--arch/powerpc/kernel/eeh.c19
-rw-r--r--arch/powerpc/kernel/eeh_driver.c12
-rw-r--r--arch/powerpc/kernel/eeh_pe.c10
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S5
-rw-r--r--arch/powerpc/kernel/irq.c2
-rw-r--r--arch/powerpc/kernel/misc.S4
-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c2
-rw-r--r--arch/powerpc/kernel/process.c2
-rw-r--r--arch/powerpc/kernel/rtas_pci.c30
-rw-r--r--arch/powerpc/kernel/setup_64.c32
-rw-r--r--arch/powerpc/kernel/stacktrace.c2
-rw-r--r--arch/powerpc/mm/numa.c41
-rw-r--r--arch/powerpc/platforms/powernv/eeh-ioda.c2
-rw-r--r--arch/powerpc/platforms/powernv/eeh-powernv.c57
-rw-r--r--arch/powerpc/platforms/powernv/opal.c21
-rw-r--r--arch/powerpc/platforms/powernv/pci.c2
-rw-r--r--arch/powerpc/platforms/pseries/dlpar.c22
-rw-r--r--arch/powerpc/platforms/pseries/hotplug-cpu.c4
-rw-r--r--arch/powerpc/platforms/pseries/iommu.c11
-rw-r--r--arch/powerpc/platforms/pseries/pseries.h3
-rw-r--r--arch/powerpc/sysdev/msi_bitmap.c66
28 files changed, 261 insertions, 119 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 7dbe5ec9d9cd..988160a4ad31 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3465,6 +3465,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
3465 e.g. base its process migration decisions on it. 3465 e.g. base its process migration decisions on it.
3466 Default is on. 3466 Default is on.
3467 3467
3468 topology_updates= [KNL, PPC, NUMA]
3469 Format: {off}
3470 Specify if the kernel should ignore (off)
3471 topology updates sent by the hypervisor to this
3472 LPAR.
3473
3468 tp720= [HW,PS2] 3474 tp720= [HW,PS2]
3469 3475
3470 tpm_suspend_pcr=[HW,TPM] 3476 tpm_suspend_pcr=[HW,TPM]
diff --git a/arch/powerpc/configs/pseries_le_defconfig b/arch/powerpc/configs/pseries_le_defconfig
index 63392f4b29a4..d2008887eb8c 100644
--- a/arch/powerpc/configs/pseries_le_defconfig
+++ b/arch/powerpc/configs/pseries_le_defconfig
@@ -48,7 +48,6 @@ CONFIG_KEXEC=y
48CONFIG_IRQ_ALL_CPUS=y 48CONFIG_IRQ_ALL_CPUS=y
49CONFIG_MEMORY_HOTPLUG=y 49CONFIG_MEMORY_HOTPLUG=y
50CONFIG_MEMORY_HOTREMOVE=y 50CONFIG_MEMORY_HOTREMOVE=y
51CONFIG_CMA=y
52CONFIG_PPC_64K_PAGES=y 51CONFIG_PPC_64K_PAGES=y
53CONFIG_PPC_SUBPAGE_PROT=y 52CONFIG_PPC_SUBPAGE_PROT=y
54CONFIG_SCHED_SMT=y 53CONFIG_SCHED_SMT=y
@@ -138,6 +137,7 @@ CONFIG_NETCONSOLE=y
138CONFIG_NETPOLL_TRAP=y 137CONFIG_NETPOLL_TRAP=y
139CONFIG_TUN=m 138CONFIG_TUN=m
140CONFIG_VIRTIO_NET=m 139CONFIG_VIRTIO_NET=m
140CONFIG_VHOST_NET=m
141CONFIG_VORTEX=y 141CONFIG_VORTEX=y
142CONFIG_ACENIC=m 142CONFIG_ACENIC=m
143CONFIG_ACENIC_OMIT_TIGON_I=y 143CONFIG_ACENIC_OMIT_TIGON_I=y
@@ -303,4 +303,9 @@ CONFIG_CRYPTO_LZO=m
303# CONFIG_CRYPTO_ANSI_CPRNG is not set 303# CONFIG_CRYPTO_ANSI_CPRNG is not set
304CONFIG_CRYPTO_DEV_NX=y 304CONFIG_CRYPTO_DEV_NX=y
305CONFIG_CRYPTO_DEV_NX_ENCRYPT=m 305CONFIG_CRYPTO_DEV_NX_ENCRYPT=m
306CONFIG_VIRTUALIZATION=y
307CONFIG_KVM_BOOK3S_64=m
308CONFIG_KVM_BOOK3S_64_HV=y
309CONFIG_TRANSPARENT_HUGEPAGE=y
310CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
306CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 311CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 3b260efbfbf9..ca07f9c27335 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -71,9 +71,10 @@ struct device_node;
71 71
72#define EEH_PE_ISOLATED (1 << 0) /* Isolated PE */ 72#define EEH_PE_ISOLATED (1 << 0) /* Isolated PE */
73#define EEH_PE_RECOVERING (1 << 1) /* Recovering PE */ 73#define EEH_PE_RECOVERING (1 << 1) /* Recovering PE */
74#define EEH_PE_RESET (1 << 2) /* PE reset in progress */ 74#define EEH_PE_CFG_BLOCKED (1 << 2) /* Block config access */
75 75
76#define EEH_PE_KEEP (1 << 8) /* Keep PE on hotplug */ 76#define EEH_PE_KEEP (1 << 8) /* Keep PE on hotplug */
77#define EEH_PE_CFG_RESTRICTED (1 << 9) /* Block config on error */
77 78
78struct eeh_pe { 79struct eeh_pe {
79 int type; /* PE type: PHB/Bus/Device */ 80 int type; /* PE type: PHB/Bus/Device */
diff --git a/arch/powerpc/include/asm/perf_event.h b/arch/powerpc/include/asm/perf_event.h
index 0bb23725b1e7..8bf1b6351716 100644
--- a/arch/powerpc/include/asm/perf_event.h
+++ b/arch/powerpc/include/asm/perf_event.h
@@ -34,7 +34,7 @@
34 do { \ 34 do { \
35 (regs)->result = 0; \ 35 (regs)->result = 0; \
36 (regs)->nip = __ip; \ 36 (regs)->nip = __ip; \
37 (regs)->gpr[1] = *(unsigned long *)__get_SP(); \ 37 (regs)->gpr[1] = current_stack_pointer(); \
38 asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \ 38 asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \
39 } while (0) 39 } while (0)
40#endif 40#endif
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index fe3f9488f321..c998279bd85b 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -1265,8 +1265,7 @@ static inline unsigned long mfvtb (void)
1265 1265
1266#define proc_trap() asm volatile("trap") 1266#define proc_trap() asm volatile("trap")
1267 1267
1268#define __get_SP() ({unsigned long sp; \ 1268extern unsigned long current_stack_pointer(void);
1269 asm volatile("mr %0,1": "=r" (sp)); sp;})
1270 1269
1271extern unsigned long scom970_read(unsigned int address); 1270extern unsigned long scom970_read(unsigned int address);
1272extern void scom970_write(unsigned int address, unsigned long value); 1271extern void scom970_write(unsigned int address, unsigned long value);
diff --git a/arch/powerpc/include/asm/syscall.h b/arch/powerpc/include/asm/syscall.h
index 6fa2708da153..6240698fee9a 100644
--- a/arch/powerpc/include/asm/syscall.h
+++ b/arch/powerpc/include/asm/syscall.h
@@ -19,7 +19,7 @@
19 19
20/* ftrace syscalls requires exporting the sys_call_table */ 20/* ftrace syscalls requires exporting the sys_call_table */
21#ifdef CONFIG_FTRACE_SYSCALLS 21#ifdef CONFIG_FTRACE_SYSCALLS
22extern const unsigned long *sys_call_table; 22extern const unsigned long sys_call_table[];
23#endif /* CONFIG_FTRACE_SYSCALLS */ 23#endif /* CONFIG_FTRACE_SYSCALLS */
24 24
25static inline long syscall_get_nr(struct task_struct *task, 25static inline long syscall_get_nr(struct task_struct *task,
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index adac9dc54aee..484b2d4462c1 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -53,9 +53,16 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size,
53#else 53#else
54 struct page *page; 54 struct page *page;
55 int node = dev_to_node(dev); 55 int node = dev_to_node(dev);
56#ifdef CONFIG_FSL_SOC
56 u64 pfn = get_pfn_limit(dev); 57 u64 pfn = get_pfn_limit(dev);
57 int zone; 58 int zone;
58 59
60 /*
61 * This code should be OK on other platforms, but we have drivers that
62 * don't set coherent_dma_mask. As a workaround we just ifdef it. This
63 * whole routine needs some serious cleanup.
64 */
65
59 zone = dma_pfn_limit_to_zone(pfn); 66 zone = dma_pfn_limit_to_zone(pfn);
60 if (zone < 0) { 67 if (zone < 0) {
61 dev_err(dev, "%s: No suitable zone for pfn %#llx\n", 68 dev_err(dev, "%s: No suitable zone for pfn %#llx\n",
@@ -73,6 +80,7 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size,
73 break; 80 break;
74#endif 81#endif
75 }; 82 };
83#endif /* CONFIG_FSL_SOC */
76 84
77 /* ignore region specifiers */ 85 /* ignore region specifiers */
78 flag &= ~(__GFP_HIGHMEM); 86 flag &= ~(__GFP_HIGHMEM);
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index d543e4179c18..2248a1999c64 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -257,6 +257,13 @@ static void *eeh_dump_pe_log(void *data, void *flag)
257 struct eeh_dev *edev, *tmp; 257 struct eeh_dev *edev, *tmp;
258 size_t *plen = flag; 258 size_t *plen = flag;
259 259
260 /* If the PE's config space is blocked, 0xFF's will be
261 * returned. It's pointless to collect the log in this
262 * case.
263 */
264 if (pe->state & EEH_PE_CFG_BLOCKED)
265 return NULL;
266
260 eeh_pe_for_each_dev(pe, edev, tmp) 267 eeh_pe_for_each_dev(pe, edev, tmp)
261 *plen += eeh_dump_dev_log(edev, pci_regs_buf + *plen, 268 *plen += eeh_dump_dev_log(edev, pci_regs_buf + *plen,
262 EEH_PCI_REGS_LOG_LEN - *plen); 269 EEH_PCI_REGS_LOG_LEN - *plen);
@@ -673,18 +680,18 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state stat
673 switch (state) { 680 switch (state) {
674 case pcie_deassert_reset: 681 case pcie_deassert_reset:
675 eeh_ops->reset(pe, EEH_RESET_DEACTIVATE); 682 eeh_ops->reset(pe, EEH_RESET_DEACTIVATE);
676 eeh_pe_state_clear(pe, EEH_PE_RESET); 683 eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
677 break; 684 break;
678 case pcie_hot_reset: 685 case pcie_hot_reset:
679 eeh_pe_state_mark(pe, EEH_PE_RESET); 686 eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
680 eeh_ops->reset(pe, EEH_RESET_HOT); 687 eeh_ops->reset(pe, EEH_RESET_HOT);
681 break; 688 break;
682 case pcie_warm_reset: 689 case pcie_warm_reset:
683 eeh_pe_state_mark(pe, EEH_PE_RESET); 690 eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
684 eeh_ops->reset(pe, EEH_RESET_FUNDAMENTAL); 691 eeh_ops->reset(pe, EEH_RESET_FUNDAMENTAL);
685 break; 692 break;
686 default: 693 default:
687 eeh_pe_state_clear(pe, EEH_PE_RESET); 694 eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
688 return -EINVAL; 695 return -EINVAL;
689 }; 696 };
690 697
@@ -1523,7 +1530,7 @@ int eeh_pe_reset(struct eeh_pe *pe, int option)
1523 switch (option) { 1530 switch (option) {
1524 case EEH_RESET_DEACTIVATE: 1531 case EEH_RESET_DEACTIVATE:
1525 ret = eeh_ops->reset(pe, option); 1532 ret = eeh_ops->reset(pe, option);
1526 eeh_pe_state_clear(pe, EEH_PE_RESET); 1533 eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
1527 if (ret) 1534 if (ret)
1528 break; 1535 break;
1529 1536
@@ -1538,7 +1545,7 @@ int eeh_pe_reset(struct eeh_pe *pe, int option)
1538 */ 1545 */
1539 eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE); 1546 eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE);
1540 1547
1541 eeh_pe_state_mark(pe, EEH_PE_RESET); 1548 eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
1542 ret = eeh_ops->reset(pe, option); 1549 ret = eeh_ops->reset(pe, option);
1543 break; 1550 break;
1544 default: 1551 default:
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 3fd514f8e4b2..6535936bdf27 100644
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -528,13 +528,13 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe)
528 eeh_pe_dev_traverse(pe, eeh_report_error, &result); 528 eeh_pe_dev_traverse(pe, eeh_report_error, &result);
529 529
530 /* Issue reset */ 530 /* Issue reset */
531 eeh_pe_state_mark(pe, EEH_PE_RESET); 531 eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
532 ret = eeh_reset_pe(pe); 532 ret = eeh_reset_pe(pe);
533 if (ret) { 533 if (ret) {
534 eeh_pe_state_clear(pe, EEH_PE_RECOVERING | EEH_PE_RESET); 534 eeh_pe_state_clear(pe, EEH_PE_RECOVERING | EEH_PE_CFG_BLOCKED);
535 return ret; 535 return ret;
536 } 536 }
537 eeh_pe_state_clear(pe, EEH_PE_RESET); 537 eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
538 538
539 /* Unfreeze the PE */ 539 /* Unfreeze the PE */
540 ret = eeh_clear_pe_frozen_state(pe, true); 540 ret = eeh_clear_pe_frozen_state(pe, true);
@@ -601,10 +601,10 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
601 * config accesses. So we prefer to block them. However, controlled 601 * config accesses. So we prefer to block them. However, controlled
602 * PCI config accesses initiated from EEH itself are allowed. 602 * PCI config accesses initiated from EEH itself are allowed.
603 */ 603 */
604 eeh_pe_state_mark(pe, EEH_PE_RESET); 604 eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
605 rc = eeh_reset_pe(pe); 605 rc = eeh_reset_pe(pe);
606 if (rc) { 606 if (rc) {
607 eeh_pe_state_clear(pe, EEH_PE_RESET); 607 eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
608 return rc; 608 return rc;
609 } 609 }
610 610
@@ -613,7 +613,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
613 /* Restore PE */ 613 /* Restore PE */
614 eeh_ops->configure_bridge(pe); 614 eeh_ops->configure_bridge(pe);
615 eeh_pe_restore_bars(pe); 615 eeh_pe_restore_bars(pe);
616 eeh_pe_state_clear(pe, EEH_PE_RESET); 616 eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
617 617
618 /* Clear frozen state */ 618 /* Clear frozen state */
619 rc = eeh_clear_pe_frozen_state(pe, false); 619 rc = eeh_clear_pe_frozen_state(pe, false);
diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
index 53dd0915e690..5a63e2b0f65b 100644
--- a/arch/powerpc/kernel/eeh_pe.c
+++ b/arch/powerpc/kernel/eeh_pe.c
@@ -525,7 +525,7 @@ static void *__eeh_pe_state_mark(void *data, void *flag)
525 pe->state |= state; 525 pe->state |= state;
526 526
527 /* Offline PCI devices if applicable */ 527 /* Offline PCI devices if applicable */
528 if (state != EEH_PE_ISOLATED) 528 if (!(state & EEH_PE_ISOLATED))
529 return NULL; 529 return NULL;
530 530
531 eeh_pe_for_each_dev(pe, edev, tmp) { 531 eeh_pe_for_each_dev(pe, edev, tmp) {
@@ -534,6 +534,10 @@ static void *__eeh_pe_state_mark(void *data, void *flag)
534 pdev->error_state = pci_channel_io_frozen; 534 pdev->error_state = pci_channel_io_frozen;
535 } 535 }
536 536
537 /* Block PCI config access if required */
538 if (pe->state & EEH_PE_CFG_RESTRICTED)
539 pe->state |= EEH_PE_CFG_BLOCKED;
540
537 return NULL; 541 return NULL;
538} 542}
539 543
@@ -611,6 +615,10 @@ static void *__eeh_pe_state_clear(void *data, void *flag)
611 pdev->error_state = pci_channel_io_normal; 615 pdev->error_state = pci_channel_io_normal;
612 } 616 }
613 617
618 /* Unblock PCI config access if required */
619 if (pe->state & EEH_PE_CFG_RESTRICTED)
620 pe->state &= ~EEH_PE_CFG_BLOCKED;
621
614 return NULL; 622 return NULL;
615} 623}
616 624
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 050f79a4a168..72e783ea0681 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1270,11 +1270,6 @@ hmi_exception_early:
1270 addi r3,r1,STACK_FRAME_OVERHEAD 1270 addi r3,r1,STACK_FRAME_OVERHEAD
1271 bl hmi_exception_realmode 1271 bl hmi_exception_realmode
1272 /* Windup the stack. */ 1272 /* Windup the stack. */
1273 /* Clear MSR_RI before setting SRR0 and SRR1. */
1274 li r0,MSR_RI
1275 mfmsr r9 /* get MSR value */
1276 andc r9,r9,r0
1277 mtmsrd r9,1 /* Clear MSR_RI */
1278 /* Move original HSRR0 and HSRR1 into the respective regs */ 1273 /* Move original HSRR0 and HSRR1 into the respective regs */
1279 ld r9,_MSR(r1) 1274 ld r9,_MSR(r1)
1280 mtspr SPRN_HSRR1,r9 1275 mtspr SPRN_HSRR1,r9
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 8eb857f216c1..c14383575fe8 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -466,7 +466,7 @@ static inline void check_stack_overflow(void)
466#ifdef CONFIG_DEBUG_STACKOVERFLOW 466#ifdef CONFIG_DEBUG_STACKOVERFLOW
467 long sp; 467 long sp;
468 468
469 sp = __get_SP() & (THREAD_SIZE-1); 469 sp = current_stack_pointer() & (THREAD_SIZE-1);
470 470
471 /* check for stack overflow: is there less than 2KB free? */ 471 /* check for stack overflow: is there less than 2KB free? */
472 if (unlikely(sp < (sizeof(struct thread_info) + 2048))) { 472 if (unlikely(sp < (sizeof(struct thread_info) + 2048))) {
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S
index 7ce26d45777e..0d432194c018 100644
--- a/arch/powerpc/kernel/misc.S
+++ b/arch/powerpc/kernel/misc.S
@@ -114,3 +114,7 @@ _GLOBAL(longjmp)
114 mtlr r0 114 mtlr r0
115 mr r3,r4 115 mr r3,r4
116 blr 116 blr
117
118_GLOBAL(current_stack_pointer)
119 PPC_LL r3,0(r1)
120 blr
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index c4dfff6c2719..202963ee013a 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -41,3 +41,5 @@ EXPORT_SYMBOL(giveup_spe);
41#ifdef CONFIG_EPAPR_PARAVIRT 41#ifdef CONFIG_EPAPR_PARAVIRT
42EXPORT_SYMBOL(epapr_hypercall_start); 42EXPORT_SYMBOL(epapr_hypercall_start);
43#endif 43#endif
44
45EXPORT_SYMBOL(current_stack_pointer);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index aa1df89c8b2a..923cd2daba89 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1545,7 +1545,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
1545 tsk = current; 1545 tsk = current;
1546 if (sp == 0) { 1546 if (sp == 0) {
1547 if (tsk == current) 1547 if (tsk == current)
1548 asm("mr %0,1" : "=r" (sp)); 1548 sp = current_stack_pointer();
1549 else 1549 else
1550 sp = tsk->thread.ksp; 1550 sp = tsk->thread.ksp;
1551 } 1551 }
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index c168337aef9d..7c55b86206b3 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -66,6 +66,11 @@ int rtas_read_config(struct pci_dn *pdn, int where, int size, u32 *val)
66 return PCIBIOS_DEVICE_NOT_FOUND; 66 return PCIBIOS_DEVICE_NOT_FOUND;
67 if (!config_access_valid(pdn, where)) 67 if (!config_access_valid(pdn, where))
68 return PCIBIOS_BAD_REGISTER_NUMBER; 68 return PCIBIOS_BAD_REGISTER_NUMBER;
69#ifdef CONFIG_EEH
70 if (pdn->edev && pdn->edev->pe &&
71 (pdn->edev->pe->state & EEH_PE_CFG_BLOCKED))
72 return PCIBIOS_SET_FAILED;
73#endif
69 74
70 addr = rtas_config_addr(pdn->busno, pdn->devfn, where); 75 addr = rtas_config_addr(pdn->busno, pdn->devfn, where);
71 buid = pdn->phb->buid; 76 buid = pdn->phb->buid;
@@ -90,9 +95,6 @@ static int rtas_pci_read_config(struct pci_bus *bus,
90 struct device_node *busdn, *dn; 95 struct device_node *busdn, *dn;
91 struct pci_dn *pdn; 96 struct pci_dn *pdn;
92 bool found = false; 97 bool found = false;
93#ifdef CONFIG_EEH
94 struct eeh_dev *edev;
95#endif
96 int ret; 98 int ret;
97 99
98 /* Search only direct children of the bus */ 100 /* Search only direct children of the bus */
@@ -109,11 +111,6 @@ static int rtas_pci_read_config(struct pci_bus *bus,
109 111
110 if (!found) 112 if (!found)
111 return PCIBIOS_DEVICE_NOT_FOUND; 113 return PCIBIOS_DEVICE_NOT_FOUND;
112#ifdef CONFIG_EEH
113 edev = of_node_to_eeh_dev(dn);
114 if (edev && edev->pe && edev->pe->state & EEH_PE_RESET)
115 return PCIBIOS_DEVICE_NOT_FOUND;
116#endif
117 114
118 ret = rtas_read_config(pdn, where, size, val); 115 ret = rtas_read_config(pdn, where, size, val);
119 if (*val == EEH_IO_ERROR_VALUE(size) && 116 if (*val == EEH_IO_ERROR_VALUE(size) &&
@@ -132,6 +129,11 @@ int rtas_write_config(struct pci_dn *pdn, int where, int size, u32 val)
132 return PCIBIOS_DEVICE_NOT_FOUND; 129 return PCIBIOS_DEVICE_NOT_FOUND;
133 if (!config_access_valid(pdn, where)) 130 if (!config_access_valid(pdn, where))
134 return PCIBIOS_BAD_REGISTER_NUMBER; 131 return PCIBIOS_BAD_REGISTER_NUMBER;
132#ifdef CONFIG_EEH
133 if (pdn->edev && pdn->edev->pe &&
134 (pdn->edev->pe->state & EEH_PE_CFG_BLOCKED))
135 return PCIBIOS_SET_FAILED;
136#endif
135 137
136 addr = rtas_config_addr(pdn->busno, pdn->devfn, where); 138 addr = rtas_config_addr(pdn->busno, pdn->devfn, where);
137 buid = pdn->phb->buid; 139 buid = pdn->phb->buid;
@@ -155,10 +157,6 @@ static int rtas_pci_write_config(struct pci_bus *bus,
155 struct device_node *busdn, *dn; 157 struct device_node *busdn, *dn;
156 struct pci_dn *pdn; 158 struct pci_dn *pdn;
157 bool found = false; 159 bool found = false;
158#ifdef CONFIG_EEH
159 struct eeh_dev *edev;
160#endif
161 int ret;
162 160
163 /* Search only direct children of the bus */ 161 /* Search only direct children of the bus */
164 busdn = pci_bus_to_OF_node(bus); 162 busdn = pci_bus_to_OF_node(bus);
@@ -173,14 +171,8 @@ static int rtas_pci_write_config(struct pci_bus *bus,
173 171
174 if (!found) 172 if (!found)
175 return PCIBIOS_DEVICE_NOT_FOUND; 173 return PCIBIOS_DEVICE_NOT_FOUND;
176#ifdef CONFIG_EEH
177 edev = of_node_to_eeh_dev(dn);
178 if (edev && edev->pe && (edev->pe->state & EEH_PE_RESET))
179 return PCIBIOS_DEVICE_NOT_FOUND;
180#endif
181 ret = rtas_write_config(pdn, where, size, val);
182 174
183 return ret; 175 return rtas_write_config(pdn, where, size, val);
184} 176}
185 177
186static struct pci_ops rtas_pci_ops = { 178static struct pci_ops rtas_pci_ops = {
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index cd07d79ad21c..4f3cfe1b6a33 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -522,36 +522,36 @@ void __init setup_system(void)
522 smp_release_cpus(); 522 smp_release_cpus();
523#endif 523#endif
524 524
525 printk("Starting Linux PPC64 %s\n", init_utsname()->version); 525 pr_info("Starting Linux PPC64 %s\n", init_utsname()->version);
526 526
527 printk("-----------------------------------------------------\n"); 527 pr_info("-----------------------------------------------------\n");
528 printk("ppc64_pft_size = 0x%llx\n", ppc64_pft_size); 528 pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size);
529 printk("phys_mem_size = 0x%llx\n", memblock_phys_mem_size()); 529 pr_info("phys_mem_size = 0x%llx\n", memblock_phys_mem_size());
530 530
531 if (ppc64_caches.dline_size != 0x80) 531 if (ppc64_caches.dline_size != 0x80)
532 printk("dcache_line_size = 0x%x\n", ppc64_caches.dline_size); 532 pr_info("dcache_line_size = 0x%x\n", ppc64_caches.dline_size);
533 if (ppc64_caches.iline_size != 0x80) 533 if (ppc64_caches.iline_size != 0x80)
534 printk("icache_line_size = 0x%x\n", ppc64_caches.iline_size); 534 pr_info("icache_line_size = 0x%x\n", ppc64_caches.iline_size);
535 535
536 printk("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features); 536 pr_info("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features);
537 printk(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE); 537 pr_info(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE);
538 printk(" always = 0x%016lx\n", CPU_FTRS_ALWAYS); 538 pr_info(" always = 0x%016lx\n", CPU_FTRS_ALWAYS);
539 printk("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features, 539 pr_info("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features,
540 cur_cpu_spec->cpu_user_features2); 540 cur_cpu_spec->cpu_user_features2);
541 printk("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features); 541 pr_info("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features);
542 printk("firmware_features = 0x%016lx\n", powerpc_firmware_features); 542 pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features);
543 543
544#ifdef CONFIG_PPC_STD_MMU_64 544#ifdef CONFIG_PPC_STD_MMU_64
545 if (htab_address) 545 if (htab_address)
546 printk("htab_address = 0x%p\n", htab_address); 546 pr_info("htab_address = 0x%p\n", htab_address);
547 547
548 printk("htab_hash_mask = 0x%lx\n", htab_hash_mask); 548 pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask);
549#endif 549#endif
550 550
551 if (PHYSICAL_START > 0) 551 if (PHYSICAL_START > 0)
552 printk("physical_start = 0x%llx\n", 552 pr_info("physical_start = 0x%llx\n",
553 (unsigned long long)PHYSICAL_START); 553 (unsigned long long)PHYSICAL_START);
554 printk("-----------------------------------------------------\n"); 554 pr_info("-----------------------------------------------------\n");
555 555
556 DBG(" <- setup_system()\n"); 556 DBG(" <- setup_system()\n");
557} 557}
diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c
index 3d30ef1038e5..ea43a347a104 100644
--- a/arch/powerpc/kernel/stacktrace.c
+++ b/arch/powerpc/kernel/stacktrace.c
@@ -50,7 +50,7 @@ void save_stack_trace(struct stack_trace *trace)
50{ 50{
51 unsigned long sp; 51 unsigned long sp;
52 52
53 asm("mr %0,1" : "=r" (sp)); 53 sp = current_stack_pointer();
54 54
55 save_context_stack(trace, sp, current, 1); 55 save_context_stack(trace, sp, current, 1);
56} 56}
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 649666d5d1c2..e5236c24dc07 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -8,6 +8,8 @@
8 * as published by the Free Software Foundation; either version 8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version. 9 * 2 of the License, or (at your option) any later version.
10 */ 10 */
11#define pr_fmt(fmt) "numa: " fmt
12
11#include <linux/threads.h> 13#include <linux/threads.h>
12#include <linux/bootmem.h> 14#include <linux/bootmem.h>
13#include <linux/init.h> 15#include <linux/init.h>
@@ -1153,6 +1155,22 @@ static int __init early_numa(char *p)
1153} 1155}
1154early_param("numa", early_numa); 1156early_param("numa", early_numa);
1155 1157
1158static bool topology_updates_enabled = true;
1159
1160static int __init early_topology_updates(char *p)
1161{
1162 if (!p)
1163 return 0;
1164
1165 if (!strcmp(p, "off")) {
1166 pr_info("Disabling topology updates\n");
1167 topology_updates_enabled = false;
1168 }
1169
1170 return 0;
1171}
1172early_param("topology_updates", early_topology_updates);
1173
1156#ifdef CONFIG_MEMORY_HOTPLUG 1174#ifdef CONFIG_MEMORY_HOTPLUG
1157/* 1175/*
1158 * Find the node associated with a hot added memory section for 1176 * Find the node associated with a hot added memory section for
@@ -1442,8 +1460,11 @@ static long hcall_vphn(unsigned long cpu, __be32 *associativity)
1442 long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; 1460 long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
1443 u64 flags = 1; 1461 u64 flags = 1;
1444 int hwcpu = get_hard_smp_processor_id(cpu); 1462 int hwcpu = get_hard_smp_processor_id(cpu);
1463 int i;
1445 1464
1446 rc = plpar_hcall9(H_HOME_NODE_ASSOCIATIVITY, retbuf, flags, hwcpu); 1465 rc = plpar_hcall9(H_HOME_NODE_ASSOCIATIVITY, retbuf, flags, hwcpu);
1466 for (i = 0; i < 6; i++)
1467 retbuf[i] = cpu_to_be64(retbuf[i]);
1447 vphn_unpack_associativity(retbuf, associativity); 1468 vphn_unpack_associativity(retbuf, associativity);
1448 1469
1449 return rc; 1470 return rc;
@@ -1539,6 +1560,9 @@ int arch_update_cpu_topology(void)
1539 struct device *dev; 1560 struct device *dev;
1540 int weight, new_nid, i = 0; 1561 int weight, new_nid, i = 0;
1541 1562
1563 if (!prrn_enabled && !vphn_enabled)
1564 return 0;
1565
1542 weight = cpumask_weight(&cpu_associativity_changes_mask); 1566 weight = cpumask_weight(&cpu_associativity_changes_mask);
1543 if (!weight) 1567 if (!weight)
1544 return 0; 1568 return 0;
@@ -1592,6 +1616,15 @@ int arch_update_cpu_topology(void)
1592 cpu = cpu_last_thread_sibling(cpu); 1616 cpu = cpu_last_thread_sibling(cpu);
1593 } 1617 }
1594 1618
1619 pr_debug("Topology update for the following CPUs:\n");
1620 if (cpumask_weight(&updated_cpus)) {
1621 for (ud = &updates[0]; ud; ud = ud->next) {
1622 pr_debug("cpu %d moving from node %d "
1623 "to %d\n", ud->cpu,
1624 ud->old_nid, ud->new_nid);
1625 }
1626 }
1627
1595 /* 1628 /*
1596 * In cases where we have nothing to update (because the updates list 1629 * In cases where we have nothing to update (because the updates list
1597 * is too short or because the new topology is same as the old one), 1630 * is too short or because the new topology is same as the old one),
@@ -1800,8 +1833,12 @@ static const struct file_operations topology_ops = {
1800 1833
1801static int topology_update_init(void) 1834static int topology_update_init(void)
1802{ 1835{
1803 start_topology_update(); 1836 /* Do not poll for changes if disabled at boot */
1804 proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops); 1837 if (topology_updates_enabled)
1838 start_topology_update();
1839
1840 if (!proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops))
1841 return -ENOMEM;
1805 1842
1806 return 0; 1843 return 0;
1807} 1844}
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index 426814a2ede3..eba9cb10619c 100644
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -373,7 +373,7 @@ static int ioda_eeh_get_pe_state(struct eeh_pe *pe)
373 * moving forward, we have to return operational 373 * moving forward, we have to return operational
374 * state during PE reset. 374 * state during PE reset.
375 */ 375 */
376 if (pe->state & EEH_PE_RESET) { 376 if (pe->state & EEH_PE_CFG_BLOCKED) {
377 result = (EEH_STATE_MMIO_ACTIVE | 377 result = (EEH_STATE_MMIO_ACTIVE |
378 EEH_STATE_DMA_ACTIVE | 378 EEH_STATE_DMA_ACTIVE |
379 EEH_STATE_MMIO_ENABLED | 379 EEH_STATE_MMIO_ENABLED |
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 3e89cbf55885..1d19e7917d7f 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -169,6 +169,26 @@ static int powernv_eeh_dev_probe(struct pci_dev *dev, void *flag)
169 } 169 }
170 170
171 /* 171 /*
172 * If the PE contains any one of following adapters, the
173 * PCI config space can't be accessed when dumping EEH log.
174 * Otherwise, we will run into fenced PHB caused by shortage
175 * of outbound credits in the adapter. The PCI config access
176 * should be blocked until PE reset. MMIO access is dropped
177 * by hardware certainly. In order to drop PCI config requests,
178 * one more flag (EEH_PE_CFG_RESTRICTED) is introduced, which
179 * will be checked in the backend for PE state retrival. If
180 * the PE becomes frozen for the first time and the flag has
181 * been set for the PE, we will set EEH_PE_CFG_BLOCKED for
182 * that PE to block its config space.
183 *
184 * Broadcom Austin 4-ports NICs (14e4:1657)
185 * Broadcom Shiner 2-ports 10G NICs (14e4:168e)
186 */
187 if ((dev->vendor == PCI_VENDOR_ID_BROADCOM && dev->device == 0x1657) ||
188 (dev->vendor == PCI_VENDOR_ID_BROADCOM && dev->device == 0x168e))
189 edev->pe->state |= EEH_PE_CFG_RESTRICTED;
190
191 /*
172 * Cache the PE primary bus, which can't be fetched when 192 * Cache the PE primary bus, which can't be fetched when
173 * full hotplug is in progress. In that case, all child 193 * full hotplug is in progress. In that case, all child
174 * PCI devices of the PE are expected to be removed prior 194 * PCI devices of the PE are expected to be removed prior
@@ -383,6 +403,39 @@ static int powernv_eeh_err_inject(struct eeh_pe *pe, int type, int func,
383 return ret; 403 return ret;
384} 404}
385 405
406static inline bool powernv_eeh_cfg_blocked(struct device_node *dn)
407{
408 struct eeh_dev *edev = of_node_to_eeh_dev(dn);
409
410 if (!edev || !edev->pe)
411 return false;
412
413 if (edev->pe->state & EEH_PE_CFG_BLOCKED)
414 return true;
415
416 return false;
417}
418
419static int powernv_eeh_read_config(struct device_node *dn,
420 int where, int size, u32 *val)
421{
422 if (powernv_eeh_cfg_blocked(dn)) {
423 *val = 0xFFFFFFFF;
424 return PCIBIOS_SET_FAILED;
425 }
426
427 return pnv_pci_cfg_read(dn, where, size, val);
428}
429
430static int powernv_eeh_write_config(struct device_node *dn,
431 int where, int size, u32 val)
432{
433 if (powernv_eeh_cfg_blocked(dn))
434 return PCIBIOS_SET_FAILED;
435
436 return pnv_pci_cfg_write(dn, where, size, val);
437}
438
386/** 439/**
387 * powernv_eeh_next_error - Retrieve next EEH error to handle 440 * powernv_eeh_next_error - Retrieve next EEH error to handle
388 * @pe: Affected PE 441 * @pe: Affected PE
@@ -440,8 +493,8 @@ static struct eeh_ops powernv_eeh_ops = {
440 .get_log = powernv_eeh_get_log, 493 .get_log = powernv_eeh_get_log,
441 .configure_bridge = powernv_eeh_configure_bridge, 494 .configure_bridge = powernv_eeh_configure_bridge,
442 .err_inject = powernv_eeh_err_inject, 495 .err_inject = powernv_eeh_err_inject,
443 .read_config = pnv_pci_cfg_read, 496 .read_config = powernv_eeh_read_config,
444 .write_config = pnv_pci_cfg_write, 497 .write_config = powernv_eeh_write_config,
445 .next_error = powernv_eeh_next_error, 498 .next_error = powernv_eeh_next_error,
446 .restore_config = powernv_eeh_restore_config 499 .restore_config = powernv_eeh_restore_config
447}; 500};
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index b642b0562f5a..d019b081df9d 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -194,6 +194,27 @@ static int __init opal_register_exception_handlers(void)
194 * fwnmi area at 0x7000 to provide the glue space to OPAL 194 * fwnmi area at 0x7000 to provide the glue space to OPAL
195 */ 195 */
196 glue = 0x7000; 196 glue = 0x7000;
197
198 /*
199 * Check if we are running on newer firmware that exports
200 * OPAL_HANDLE_HMI token. If yes, then don't ask OPAL to patch
201 * the HMI interrupt and we catch it directly in Linux.
202 *
203 * For older firmware (i.e currently released POWER8 System Firmware
204 * as of today <= SV810_087), we fallback to old behavior and let OPAL
205 * patch the HMI vector and handle it inside OPAL firmware.
206 *
207 * For newer firmware (in development/yet to be released) we will
208 * start catching/handling HMI directly in Linux.
209 */
210 if (!opal_check_token(OPAL_HANDLE_HMI)) {
211 pr_info("opal: Old firmware detected, OPAL handles HMIs.\n");
212 opal_register_exception_handler(
213 OPAL_HYPERVISOR_MAINTENANCE_HANDLER,
214 0, glue);
215 glue += 128;
216 }
217
197 opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue); 218 opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue);
198#endif 219#endif
199 220
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index b3ca77ddf36d..b2187d0068b8 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -505,7 +505,7 @@ static bool pnv_pci_cfg_check(struct pci_controller *hose,
505 edev = of_node_to_eeh_dev(dn); 505 edev = of_node_to_eeh_dev(dn);
506 if (edev) { 506 if (edev) {
507 if (edev->pe && 507 if (edev->pe &&
508 (edev->pe->state & EEH_PE_RESET)) 508 (edev->pe->state & EEH_PE_CFG_BLOCKED))
509 return false; 509 return false;
510 510
511 if (edev->mode & EEH_DEV_REMOVED) 511 if (edev->mode & EEH_DEV_REMOVED)
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index fdf01b660d59..6ad83bd11fe2 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -25,11 +25,11 @@
25#include <asm/rtas.h> 25#include <asm/rtas.h>
26 26
27struct cc_workarea { 27struct cc_workarea {
28 u32 drc_index; 28 __be32 drc_index;
29 u32 zero; 29 __be32 zero;
30 u32 name_offset; 30 __be32 name_offset;
31 u32 prop_length; 31 __be32 prop_length;
32 u32 prop_offset; 32 __be32 prop_offset;
33}; 33};
34 34
35void dlpar_free_cc_property(struct property *prop) 35void dlpar_free_cc_property(struct property *prop)
@@ -49,11 +49,11 @@ static struct property *dlpar_parse_cc_property(struct cc_workarea *ccwa)
49 if (!prop) 49 if (!prop)
50 return NULL; 50 return NULL;
51 51
52 name = (char *)ccwa + ccwa->name_offset; 52 name = (char *)ccwa + be32_to_cpu(ccwa->name_offset);
53 prop->name = kstrdup(name, GFP_KERNEL); 53 prop->name = kstrdup(name, GFP_KERNEL);
54 54
55 prop->length = ccwa->prop_length; 55 prop->length = be32_to_cpu(ccwa->prop_length);
56 value = (char *)ccwa + ccwa->prop_offset; 56 value = (char *)ccwa + be32_to_cpu(ccwa->prop_offset);
57 prop->value = kmemdup(value, prop->length, GFP_KERNEL); 57 prop->value = kmemdup(value, prop->length, GFP_KERNEL);
58 if (!prop->value) { 58 if (!prop->value) {
59 dlpar_free_cc_property(prop); 59 dlpar_free_cc_property(prop);
@@ -79,7 +79,7 @@ static struct device_node *dlpar_parse_cc_node(struct cc_workarea *ccwa,
79 if (!dn) 79 if (!dn)
80 return NULL; 80 return NULL;
81 81
82 name = (char *)ccwa + ccwa->name_offset; 82 name = (char *)ccwa + be32_to_cpu(ccwa->name_offset);
83 dn->full_name = kasprintf(GFP_KERNEL, "%s/%s", path, name); 83 dn->full_name = kasprintf(GFP_KERNEL, "%s/%s", path, name);
84 if (!dn->full_name) { 84 if (!dn->full_name) {
85 kfree(dn); 85 kfree(dn);
@@ -126,7 +126,7 @@ void dlpar_free_cc_nodes(struct device_node *dn)
126#define CALL_AGAIN -2 126#define CALL_AGAIN -2
127#define ERR_CFG_USE -9003 127#define ERR_CFG_USE -9003
128 128
129struct device_node *dlpar_configure_connector(u32 drc_index, 129struct device_node *dlpar_configure_connector(__be32 drc_index,
130 struct device_node *parent) 130 struct device_node *parent)
131{ 131{
132 struct device_node *dn; 132 struct device_node *dn;
@@ -414,7 +414,7 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count)
414 if (!parent) 414 if (!parent)
415 return -ENODEV; 415 return -ENODEV;
416 416
417 dn = dlpar_configure_connector(drc_index, parent); 417 dn = dlpar_configure_connector(cpu_to_be32(drc_index), parent);
418 if (!dn) 418 if (!dn)
419 return -EINVAL; 419 return -EINVAL;
420 420
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index b174fa751d26..5c375f93c669 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -247,7 +247,7 @@ static int pseries_add_processor(struct device_node *np)
247 unsigned int cpu; 247 unsigned int cpu;
248 cpumask_var_t candidate_mask, tmp; 248 cpumask_var_t candidate_mask, tmp;
249 int err = -ENOSPC, len, nthreads, i; 249 int err = -ENOSPC, len, nthreads, i;
250 const u32 *intserv; 250 const __be32 *intserv;
251 251
252 intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len); 252 intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len);
253 if (!intserv) 253 if (!intserv)
@@ -293,7 +293,7 @@ static int pseries_add_processor(struct device_node *np)
293 for_each_cpu(cpu, tmp) { 293 for_each_cpu(cpu, tmp) {
294 BUG_ON(cpu_present(cpu)); 294 BUG_ON(cpu_present(cpu));
295 set_cpu_present(cpu, true); 295 set_cpu_present(cpu, true);
296 set_hard_smp_processor_id(cpu, *intserv++); 296 set_hard_smp_processor_id(cpu, be32_to_cpu(*intserv++));
297 } 297 }
298 err = 0; 298 err = 0;
299out_unlock: 299out_unlock:
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index de1ec54a2a57..e32e00976a94 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -30,7 +30,6 @@
30#include <linux/mm.h> 30#include <linux/mm.h>
31#include <linux/memblock.h> 31#include <linux/memblock.h>
32#include <linux/spinlock.h> 32#include <linux/spinlock.h>
33#include <linux/sched.h> /* for show_stack */
34#include <linux/string.h> 33#include <linux/string.h>
35#include <linux/pci.h> 34#include <linux/pci.h>
36#include <linux/dma-mapping.h> 35#include <linux/dma-mapping.h>
@@ -168,7 +167,7 @@ static int tce_build_pSeriesLP(struct iommu_table *tbl, long tcenum,
168 printk("\tindex = 0x%llx\n", (u64)tbl->it_index); 167 printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
169 printk("\ttcenum = 0x%llx\n", (u64)tcenum); 168 printk("\ttcenum = 0x%llx\n", (u64)tcenum);
170 printk("\ttce val = 0x%llx\n", tce ); 169 printk("\ttce val = 0x%llx\n", tce );
171 show_stack(current, (unsigned long *)__get_SP()); 170 dump_stack();
172 } 171 }
173 172
174 tcenum++; 173 tcenum++;
@@ -257,7 +256,7 @@ static int tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
257 printk("\tindex = 0x%llx\n", (u64)tbl->it_index); 256 printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
258 printk("\tnpages = 0x%llx\n", (u64)npages); 257 printk("\tnpages = 0x%llx\n", (u64)npages);
259 printk("\ttce[0] val = 0x%llx\n", tcep[0]); 258 printk("\ttce[0] val = 0x%llx\n", tcep[0]);
260 show_stack(current, (unsigned long *)__get_SP()); 259 dump_stack();
261 } 260 }
262 return ret; 261 return ret;
263} 262}
@@ -273,7 +272,7 @@ static void tce_free_pSeriesLP(struct iommu_table *tbl, long tcenum, long npages
273 printk("tce_free_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc); 272 printk("tce_free_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc);
274 printk("\tindex = 0x%llx\n", (u64)tbl->it_index); 273 printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
275 printk("\ttcenum = 0x%llx\n", (u64)tcenum); 274 printk("\ttcenum = 0x%llx\n", (u64)tcenum);
276 show_stack(current, (unsigned long *)__get_SP()); 275 dump_stack();
277 } 276 }
278 277
279 tcenum++; 278 tcenum++;
@@ -292,7 +291,7 @@ static void tce_freemulti_pSeriesLP(struct iommu_table *tbl, long tcenum, long n
292 printk("\trc = %lld\n", rc); 291 printk("\trc = %lld\n", rc);
293 printk("\tindex = 0x%llx\n", (u64)tbl->it_index); 292 printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
294 printk("\tnpages = 0x%llx\n", (u64)npages); 293 printk("\tnpages = 0x%llx\n", (u64)npages);
295 show_stack(current, (unsigned long *)__get_SP()); 294 dump_stack();
296 } 295 }
297} 296}
298 297
@@ -307,7 +306,7 @@ static unsigned long tce_get_pSeriesLP(struct iommu_table *tbl, long tcenum)
307 printk("tce_get_pSeriesLP: plpar_tce_get failed. rc=%lld\n", rc); 306 printk("tce_get_pSeriesLP: plpar_tce_get failed. rc=%lld\n", rc);
308 printk("\tindex = 0x%llx\n", (u64)tbl->it_index); 307 printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
309 printk("\ttcenum = 0x%llx\n", (u64)tcenum); 308 printk("\ttcenum = 0x%llx\n", (u64)tcenum);
310 show_stack(current, (unsigned long *)__get_SP()); 309 dump_stack();
311 } 310 }
312 311
313 return tce_ret; 312 return tce_ret;
diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h
index 361add62abf1..1796c5438cc6 100644
--- a/arch/powerpc/platforms/pseries/pseries.h
+++ b/arch/powerpc/platforms/pseries/pseries.h
@@ -56,7 +56,8 @@ extern void hvc_vio_init_early(void);
56/* Dynamic logical Partitioning/Mobility */ 56/* Dynamic logical Partitioning/Mobility */
57extern void dlpar_free_cc_nodes(struct device_node *); 57extern void dlpar_free_cc_nodes(struct device_node *);
58extern void dlpar_free_cc_property(struct property *); 58extern void dlpar_free_cc_property(struct property *);
59extern struct device_node *dlpar_configure_connector(u32, struct device_node *); 59extern struct device_node *dlpar_configure_connector(__be32,
60 struct device_node *);
60extern int dlpar_attach_node(struct device_node *); 61extern int dlpar_attach_node(struct device_node *);
61extern int dlpar_detach_node(struct device_node *); 62extern int dlpar_detach_node(struct device_node *);
62 63
diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c
index 0c75214b6f92..73b64c73505b 100644
--- a/arch/powerpc/sysdev/msi_bitmap.c
+++ b/arch/powerpc/sysdev/msi_bitmap.c
@@ -145,59 +145,64 @@ void msi_bitmap_free(struct msi_bitmap *bmp)
145 145
146#ifdef CONFIG_MSI_BITMAP_SELFTEST 146#ifdef CONFIG_MSI_BITMAP_SELFTEST
147 147
148#define check(x) \
149 if (!(x)) printk("msi_bitmap: test failed at line %d\n", __LINE__);
150
151static void __init test_basics(void) 148static void __init test_basics(void)
152{ 149{
153 struct msi_bitmap bmp; 150 struct msi_bitmap bmp;
154 int i, size = 512; 151 int rc, i, size = 512;
155 152
156 /* Can't allocate a bitmap of 0 irqs */ 153 /* Can't allocate a bitmap of 0 irqs */
157 check(msi_bitmap_alloc(&bmp, 0, NULL) != 0); 154 WARN_ON(msi_bitmap_alloc(&bmp, 0, NULL) == 0);
158 155
159 /* of_node may be NULL */ 156 /* of_node may be NULL */
160 check(0 == msi_bitmap_alloc(&bmp, size, NULL)); 157 WARN_ON(msi_bitmap_alloc(&bmp, size, NULL));
161 158
162 /* Should all be free by default */ 159 /* Should all be free by default */
163 check(0 == bitmap_find_free_region(bmp.bitmap, size, 160 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
164 get_count_order(size)));
165 bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); 161 bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
166 162
167 /* With no node, there's no msi-available-ranges, so expect > 0 */ 163 /* With no node, there's no msi-available-ranges, so expect > 0 */
168 check(msi_bitmap_reserve_dt_hwirqs(&bmp) > 0); 164 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
169 165
170 /* Should all still be free */ 166 /* Should all still be free */
171 check(0 == bitmap_find_free_region(bmp.bitmap, size, 167 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
172 get_count_order(size)));
173 bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); 168 bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
174 169
175 /* Check we can fill it up and then no more */ 170 /* Check we can fill it up and then no more */
176 for (i = 0; i < size; i++) 171 for (i = 0; i < size; i++)
177 check(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0); 172 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0);
178 173
179 check(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0); 174 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0);
180 175
181 /* Should all be allocated */ 176 /* Should all be allocated */
182 check(bitmap_find_free_region(bmp.bitmap, size, 0) < 0); 177 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, 0) >= 0);
183 178
184 /* And if we free one we can then allocate another */ 179 /* And if we free one we can then allocate another */
185 msi_bitmap_free_hwirqs(&bmp, size / 2, 1); 180 msi_bitmap_free_hwirqs(&bmp, size / 2, 1);
186 check(msi_bitmap_alloc_hwirqs(&bmp, 1) == size / 2); 181 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) != size / 2);
182
183 /* Free most of them for the alignment tests */
184 msi_bitmap_free_hwirqs(&bmp, 3, size - 3);
187 185
188 /* Check we get a naturally aligned offset */ 186 /* Check we get a naturally aligned offset */
189 check(msi_bitmap_alloc_hwirqs(&bmp, 2) % 2 == 0); 187 rc = msi_bitmap_alloc_hwirqs(&bmp, 2);
190 check(msi_bitmap_alloc_hwirqs(&bmp, 4) % 4 == 0); 188 WARN_ON(rc < 0 && rc % 2 != 0);
191 check(msi_bitmap_alloc_hwirqs(&bmp, 8) % 8 == 0); 189 rc = msi_bitmap_alloc_hwirqs(&bmp, 4);
192 check(msi_bitmap_alloc_hwirqs(&bmp, 9) % 16 == 0); 190 WARN_ON(rc < 0 && rc % 4 != 0);
193 check(msi_bitmap_alloc_hwirqs(&bmp, 3) % 4 == 0); 191 rc = msi_bitmap_alloc_hwirqs(&bmp, 8);
194 check(msi_bitmap_alloc_hwirqs(&bmp, 7) % 8 == 0); 192 WARN_ON(rc < 0 && rc % 8 != 0);
195 check(msi_bitmap_alloc_hwirqs(&bmp, 121) % 128 == 0); 193 rc = msi_bitmap_alloc_hwirqs(&bmp, 9);
194 WARN_ON(rc < 0 && rc % 16 != 0);
195 rc = msi_bitmap_alloc_hwirqs(&bmp, 3);
196 WARN_ON(rc < 0 && rc % 4 != 0);
197 rc = msi_bitmap_alloc_hwirqs(&bmp, 7);
198 WARN_ON(rc < 0 && rc % 8 != 0);
199 rc = msi_bitmap_alloc_hwirqs(&bmp, 121);
200 WARN_ON(rc < 0 && rc % 128 != 0);
196 201
197 msi_bitmap_free(&bmp); 202 msi_bitmap_free(&bmp);
198 203
199 /* Clients may check bitmap == NULL for "not-allocated" */ 204 /* Clients may WARN_ON bitmap == NULL for "not-allocated" */
200 check(bmp.bitmap == NULL); 205 WARN_ON(bmp.bitmap != NULL);
201 206
202 kfree(bmp.bitmap); 207 kfree(bmp.bitmap);
203} 208}
@@ -219,14 +224,13 @@ static void __init test_of_node(void)
219 of_node_init(&of_node); 224 of_node_init(&of_node);
220 of_node.full_name = node_name; 225 of_node.full_name = node_name;
221 226
222 check(0 == msi_bitmap_alloc(&bmp, size, &of_node)); 227 WARN_ON(msi_bitmap_alloc(&bmp, size, &of_node));
223 228
224 /* No msi-available-ranges, so expect > 0 */ 229 /* No msi-available-ranges, so expect > 0 */
225 check(msi_bitmap_reserve_dt_hwirqs(&bmp) > 0); 230 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
226 231
227 /* Should all still be free */ 232 /* Should all still be free */
228 check(0 == bitmap_find_free_region(bmp.bitmap, size, 233 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
229 get_count_order(size)));
230 bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); 234 bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
231 235
232 /* Now create a fake msi-available-ranges property */ 236 /* Now create a fake msi-available-ranges property */
@@ -240,11 +244,11 @@ static void __init test_of_node(void)
240 of_node.properties = &prop; 244 of_node.properties = &prop;
241 245
242 /* msi-available-ranges, so expect == 0 */ 246 /* msi-available-ranges, so expect == 0 */
243 check(msi_bitmap_reserve_dt_hwirqs(&bmp) == 0); 247 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp));
244 248
245 /* Check we got the expected result */ 249 /* Check we got the expected result */
246 check(0 == bitmap_parselist(expected_str, expected, size)); 250 WARN_ON(bitmap_parselist(expected_str, expected, size));
247 check(bitmap_equal(expected, bmp.bitmap, size)); 251 WARN_ON(!bitmap_equal(expected, bmp.bitmap, size));
248 252
249 msi_bitmap_free(&bmp); 253 msi_bitmap_free(&bmp);
250 kfree(bmp.bitmap); 254 kfree(bmp.bitmap);