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2016-08-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds6-6/+11
Pull networking fixes from David Miller: 1) Segregate namespaces properly in conntrack dumps, from Liping Zhang. 2) tcp listener refcount fix in netfilter tproxy, from Eric Dumazet. 3) Fix timeouts in qed driver due to xmit_more, from Yuval Mintz. 4) Fix use-after-free in tcp_xmit_retransmit_queue(). 5) Userspace header fixups (use of __u32, missing includes, etc.) from Mikko Rapeli. 6) Further refinements to fragmentation wrt gso and tunnels, from Shmulik Ladkani. 7) Trigger poll correctly for zero length UDP packets, from Eric Dumazet. 8) TCP window scaling fix, also from Eric Dumazet. 9) SLAB_DESTROY_BY_RCU is not relevant any more for UDP sockets. 10) Module refcount leak in qdisc_create_dflt(), from Eric Dumazet. 11) Fix deadlock in cp_rx_poll() of 8139cp driver, from Gao Feng. 12) Memory leak in rhashtable's alloc_bucket_locks(), from Eric Dumazet. 13) Add new device ID to alx driver, from Owen Lin. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (83 commits) Add Killer E2500 device ID in alx driver. net: smc91x: fix SMC accesses Documentation: networking: dsa: Remove platform device TODO net/mlx5: Increase number of ethtool steering priorities net/mlx5: Add error prints when validate ETS failed net/mlx5e: Fix memory leak if refreshing TIRs fails net/mlx5e: Add ethtool counter for TX xmit_more net/mlx5e: Fix ethtool -g/G rx ring parameter report with striding RQ net/mlx5e: Don't wait for SQ completions on close net/mlx5e: Don't post fragmented MPWQE when RQ is disabled net/mlx5e: Don't wait for RQ completions on close net/mlx5e: Limit UMR length to the device's limitation rhashtable: fix a memory leak in alloc_bucket_locks() sfc: fix potential stack corruption from running past stat bitmask team: loadbalance: push lacpdus to exact delivery net: hns: dereference ppe_cb->ppe_common_cb if it is non-null 8139cp: Fix one possible deadloop in cp_rx_poll i40e: Change some init flow for the client Revert "phy: IRQ cannot be shared" net: dsa: bcm_sf2: Fix race condition while unmasking interrupts ...
2016-08-29Merge tag 'powerpc-4.8-4' of ↵Linus Torvalds29-38/+148
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Ben Herrenschmidt: "This was meant to be sent early last week, but I has a change pending on one of the fixes and other things made me forget all about. Ugh. We have some misc fixes for powerpc 4.8. Some trivial bits and some regressions, and a trivial cleanup or two that I saw no point in letting rot in patchwork" * tag 'powerpc-4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc: signals: Discard transaction state from signal frames powerpc/powernv : Drop reference added by kset_find_obj() powerpc/tm: do not use r13 for tabort_syscall powerpc: move hmi.c to arch/powerpc/kvm/ powerpc: sysdev: cpm: fix gpio save_regs functions powerpc/pseries: PACA save area fix for MCE vs MCE powerpc/pseries: PACA save area fix for general exception vs MCE powerpc/prom: Fix sub-processor option passed to ibm, client-architecture-support powerpc, hotplug: Avoid to touch non-existent cpumasks. powerpc: migrate exception table users off module.h and onto extable.h powerpc/powernv/pci: fix iterator signedness powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb) cxl: use pcibios_free_controller_deferred() when removing vPHBs powerpc: mpc8349emitx: Delete unnecessary assignment for the field "owner" powerpc/512x: Delete unnecessary assignment for the field "owner" drivers/macintosh: Delete owner assignment powerpc: cputhreads: Add missing include file
2016-08-28net: smc91x: fix SMC accessesRussell King6-6/+11
Commit b70661c70830 ("net: smc91x: use run-time configuration on all ARM machines") broke some ARM platforms through several mistakes. Firstly, the access size must correspond to the following rule: (a) at least one of 16-bit or 8-bit access size must be supported (b) 32-bit accesses are optional, and may be enabled in addition to the above. Secondly, it provides no emulation of 16-bit accesses, instead blindly making 16-bit accesses even when the platform specifies that only 8-bit is supported. Reorganise smc91x.h so we can make use of the existing 16-bit access emulation already provided - if 16-bit accesses are supported, use 16-bit accesses directly, otherwise if 8-bit accesses are supported, use the provided 16-bit access emulation. If neither, BUG(). This exactly reflects the driver behaviour prior to the commit being fixed. Since the conversion incorrectly cut down the available access sizes on several platforms, we also need to go through every platform and fix up the overly-restrictive access size: Arnd assumed that if a platform can perform 32-bit, 16-bit and 8-bit accesses, then only a 32-bit access size needed to be specified - not so, all available access sizes must be specified. This likely fixes some performance regressions in doing this: if a platform does not support 8-bit accesses, 8-bit accesses have been emulated by performing a 16-bit read-modify-write access. Tested on the Intel Assabet/Neponset platform, which supports only 8-bit accesses, which was broken by the original commit. Fixes: b70661c70830 ("net: smc91x: use run-time configuration on all ARM machines") Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Tested-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-29powerpc: signals: Discard transaction state from signal framesCyril Bur2-0/+28
Userspace can begin and suspend a transaction within the signal handler which means they might enter sys_rt_sigreturn() with the processor in suspended state. sys_rt_sigreturn() wants to restore process context (which may have been in a transaction before signal delivery). To do this it must restore TM SPRS. To achieve this, any transaction initiated within the signal frame must be discarded in order to be able to restore TM SPRs as TM SPRs can only be manipulated non-transactionally.. >From the PowerPC ISA: TM Bad Thing Exception [Category: Transactional Memory] An attempt is made to execute a mtspr targeting a TM register in other than Non-transactional state. Not doing so results in a TM Bad Thing: [12045.221359] Kernel BUG at c000000000050a40 [verbose debug info unavailable] [12045.221470] Unexpected TM Bad Thing exception at c000000000050a40 (msr 0x201033) [12045.221540] Oops: Unrecoverable exception, sig: 6 [#1] [12045.221586] SMP NR_CPUS=2048 NUMA PowerNV [12045.221634] Modules linked in: xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables kvm_hv kvm uio_pdrv_genirq ipmi_powernv uio powernv_rng ipmi_msghandler autofs4 ses enclosure scsi_transport_sas bnx2x ipr mdio libcrc32c [12045.222167] CPU: 68 PID: 6178 Comm: sigreturnpanic Not tainted 4.7.0 #34 [12045.222224] task: c0000000fce38600 ti: c0000000fceb4000 task.ti: c0000000fceb4000 [12045.222293] NIP: c000000000050a40 LR: c0000000000163bc CTR: 0000000000000000 [12045.222361] REGS: c0000000fceb7ac0 TRAP: 0700 Not tainted (4.7.0) [12045.222418] MSR: 9000000300201033 <SF,HV,ME,IR,DR,RI,LE,TM[SE]> CR: 28444280 XER: 20000000 [12045.222625] CFAR: c0000000000163b8 SOFTE: 0 PACATMSCRATCH: 900000014280f033 GPR00: 01100000b8000001 c0000000fceb7d40 c00000000139c100 c0000000fce390d0 GPR04: 900000034280f033 0000000000000000 0000000000000000 0000000000000000 GPR08: 0000000000000000 b000000000001033 0000000000000001 0000000000000000 GPR12: 0000000000000000 c000000002926400 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR24: 0000000000000000 00003ffff98cadd0 00003ffff98cb470 0000000000000000 GPR28: 900000034280f033 c0000000fceb7ea0 0000000000000001 c0000000fce390d0 [12045.223535] NIP [c000000000050a40] tm_restore_sprs+0xc/0x1c [12045.223584] LR [c0000000000163bc] tm_recheckpoint+0x5c/0xa0 [12045.223630] Call Trace: [12045.223655] [c0000000fceb7d80] [c000000000026e74] sys_rt_sigreturn+0x494/0x6c0 [12045.223738] [c0000000fceb7e30] [c0000000000092e0] system_call+0x38/0x108 [12045.223806] Instruction dump: [12045.223841] 7c800164 4e800020 7c0022a6 f80304a8 7c0222a6 f80304b0 7c0122a6 f80304b8 [12045.223955] 4e800020 e80304a8 7c0023a6 e80304b0 <7c0223a6> e80304b8 7c0123a6 4e800020 [12045.224074] ---[ end trace cb8002ee240bae76 ]--- It isn't clear exactly if there is really a use case for userspace returning with a suspended transaction, however, doing so doesn't (on its own) constitute a bad frame. As such, this patch simply discards the transactional state of the context calling the sigreturn and continues. Reported-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Tested-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Reviewed-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Acked-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-29powerpc/powernv : Drop reference added by kset_find_obj()Mukesh Ojha2-2/+12
In a situation, where Linux kernel gets notified about duplicate error log from OPAL, it is been observed that kernel fails to remove sysfs entries (/sys/firmware/opal/elog/0xXXXXXXXX) of such error logs. This is because, we currently search the error log/dump kobject in the kset list via 'kset_find_obj()' routine. Which eventually increment the reference count by one, once it founds the kobject. So, unless we decrement the reference count by one after it found the kobject, we would not be able to release the kobject properly later. This patch adds the 'kobject_put()' which was missing earlier. Signed-off-by: Mukesh Ojha <mukesh02@linux.vnet.ibm.com> Cc: stable@vger.kernel.org Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-29powerpc/tm: do not use r13 for tabort_syscallNicholas Piggin1-6/+6
tabort_syscall runs with RI=1, so a nested recoverable machine check will load the paca into r13 and overwrite what we loaded it with, because exceptions returning to privileged mode do not restore r13. Fixes: b4b56f9ecab4 (powerpc/tm: Abort syscalls in active transactions) Cc: stable@vger.kernel.org Signed-off-by: Nick Piggin <npiggin@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-28Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Thomas Gleixner: "A single bugfix to prevent irq remapping when the ioapic is disabled" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Do not init irq remapping if ioapic is disabled
2016-08-27Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds5-79/+73
Pull KVM fixes from Paolo Bonzini: "ARM: - fixes for ITS init issues, error handling, IRQ leakage, race conditions - an erratum workaround for timers - some removal of misleading use of errors and comments - a fix for GICv3 on 32-bit guests MIPS: - fix for where the guest could wrongly map the first page of physical memory x86: - nested virtualization fixes" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: MIPS: KVM: Check for pfn noslot case kvm: nVMX: fix nested tsc scaling KVM: nVMX: postpone VMCS changes on MSR_IA32_APICBASE write KVM: nVMX: fix msr bitmaps to prevent L2 from accessing L0 x2APIC arm64: KVM: report configured SRE value to 32-bit world arm64: KVM: remove misleading comment on pmu status KVM: arm/arm64: timer: Workaround misconfigured timer interrupt arm64: Document workaround for Cortex-A72 erratum #853709 KVM: arm/arm64: Change misleading use of is_error_pfn KVM: arm64: ITS: avoid re-mapping LPIs KVM: arm64: check for ITS device on MSI injection KVM: arm64: ITS: move ITS registration into first VCPU run KVM: arm64: vgic-its: Make updates to propbaser/pendbaser atomic KVM: arm64: vgic-its: Plug race in vgic_put_irq KVM: arm64: vgic-its: Handle errors from vgic_add_lpi KVM: arm64: ITS: return 1 on successful MSI injection
2016-08-26Merge branch 'akpm' (patches from Andrew)Linus Torvalds3-7/+5
Merge fixes from Andrew Morton: "11 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm: silently skip readahead for DAX inodes dax: fix device-dax region base fs/seq_file: fix out-of-bounds read mm: memcontrol: avoid unused function warning mm: clarify COMPACTION Kconfig text treewide: replace config_enabled() with IS_ENABLED() (2nd round) printk: fix parsing of "brl=" option soft_dirty: fix soft_dirty during THP split sysctl: handle error writing UINT_MAX to u32 fields get_maintainer: quiet noisy implicit -f vcs_file_exists checking byteswap: don't use __builtin_bswap*() with sparse
2016-08-26Merge tag 'arm64-fixes' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull ARM64 fix from Catalin Marinas: "ARM64 fix to avoid potential TLB conflict when CONFIG_RANDOMIZE_BASE is enabled" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: avoid TLB conflict with CONFIG_RANDOMIZE_BASE
2016-08-26Merge tag 'pci-v4.8-fixes-1' of ↵Linus Torvalds1-2/+8
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "Resource management: - Update "pci=resource_alignment" documentation (Mathias Koehrer) MSI: - Use positive flags in pci_alloc_irq_vectors() (Christoph Hellwig) - Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors() (Christoph Hellwig) Intel VMD host bridge driver: - Fix infinite loop executing irq's (Keith Busch)" * tag 'pci-v4.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: x86/PCI: VMD: Fix infinite loop executing irq's PCI: Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors() PCI: Use positive flags in pci_alloc_irq_vectors() PCI: Update "pci=resource_alignment" documentation
2016-08-26treewide: replace config_enabled() with IS_ENABLED() (2nd round)Masahiro Yamada3-7/+5
Commit 97f2645f358b ("tree-wide: replace config_enabled() with IS_ENABLED()") mostly killed config_enabled(), but some new users have appeared for v4.8-rc1. They are all used for a boolean option, so can be replaced with IS_ENABLED() safely. Link: http://lkml.kernel.org/r/1471970749-24867-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-25arm64: avoid TLB conflict with CONFIG_RANDOMIZE_BASEMark Rutland1-0/+3
When CONFIG_RANDOMIZE_BASE is selected, we modify the page tables to remap the kernel at a newly-chosen VA range. We do this with the MMU disabled, but do not invalidate TLBs prior to re-enabling the MMU with the new tables. Thus the old mappings entries may still live in TLBs, and we risk violating Break-Before-Make requirements, leading to TLB conflicts and/or other issues. We invalidate TLBs when we uninsall the idmap in early setup code, but prior to this we are subject to issues relating to the Break-Before-Make violation. Avoid these issues by invalidating the TLBs before the new mappings can be used by the hardware. Fixes: f80fb3a3d508 ("arm64: add support for kernel ASLR") Cc: <stable@vger.kernel.org> # 4.6+ Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-24Merge branch 'for-linus-4.8-rc4' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML fix from Richard Weinberger: "This contains a fix for a build regression introduced during the merge window" * 'for-linus-4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Don't discard .text.exit section
2016-08-24Merge tag 'for-linus-4.8b-rc3-tag' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen regression fix from David Vrabel: "Fix a regression in the xenbus device preventing userspace tools from working" * tag 'for-linus-4.8b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: change the type of xen_vcpu_id to uint32_t xenbus: don't look up transaction IDs for ordinary writes
2016-08-24xen: change the type of xen_vcpu_id to uint32_tVitaly Kuznetsov2-2/+2
We pass xen_vcpu_id mapping information to hypercalls which require uint32_t type so it would be cleaner to have it as uint32_t. The initializer to -1 can be dropped as we always do the mapping before using it and we never check the 'not set' value anyway. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-08-24x86/apic: Do not init irq remapping if ioapic is disabledWanpeng Li1-0/+3
native_smp_prepare_cpus -> default_setup_apic_routing -> enable_IR_x2apic -> irq_remapping_prepare -> intel_prepare_irq_remapping -> intel_setup_irq_remapping So IR table is setup even if "noapic" boot parameter is added. As a result we crash later when the interrupt affinity is set due to a half initialized remapping infrastructure. Prevent remap initialization when IOAPIC is disabled. Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1471954039-3942-1-git-send-email-wanpeng.li@hotmail.com Cc: stable@vger.kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-08-23x86/PCI: VMD: Fix infinite loop executing irq'sKeith Busch1-2/+8
We can't initialize the list head on deletion as this causes the node to point to itself, which causes an infinite loop if vmd_irq() happens to be servicing that node. The list initialization was trying to fix a bug from multiple calls to disable the same IRQ. Fix this instead by having the VMD driver track if the interrupt is enabled. [bhelgaas: changelog, add "Fixes"] Fixes: 97e923063575 ("x86/PCI: VMD: Initialize list item in IRQ disable") Reported-by: Grzegorz Koczot <grzegorz.koczot@intel.com> Tested-by: Miroslaw Drost <miroslaw.drost@intel.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by Jon Derrick: <jonathan.derrick@intel.com>
2016-08-23um: Don't discard .text.exit sectionAndrey Ryabinin1-1/+1
Commit e41f501d3912 ("vmlinux.lds: account for destructor sections") added '.text.exit' to EXIT_TEXT which is discarded at link time by default. This breaks compilation of UML: `.text.exit' referenced in section `.fini_array' of /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libc.a(sdlerror.o): defined in discarded section `.text.exit' of /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libc.a(sdlerror.o) Apparently UML doesn't want to discard exit text, so let's place all EXIT_TEXT sections in .exit.text. Fixes: e41f501d3912 ("vmlinux.lds: account for destructor sections") Reported-by: Stefan Traby <stefan@hello-penguin.com> Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: <stable@vger.kernel.org> Acked-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2016-08-23Merge branch 'linus' of ↵Linus Torvalds3-7/+8
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fixes from Herbert Xu: "This fixes a number of memory corruption bugs in the newly added sha256-mb/sha256-mb code" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: sha512-mb - fix ctx pointer crypto: sha256-mb - fix ctx pointer and digest copy
2016-08-22Merge tag 'arc-4.8-rc4-fixes' of ↵Linus Torvalds9-9/+30
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC fixes from Vineet Gupta: - support for Syscall ABI v4 with upstream gcc 6.x - lockdep fix (Daniel Mentz) - gdb register clobber (Liav Rehana) - couple of missing exports for modules - other fixes here and there * tag 'arc-4.8-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: export __udivdi3 for modules ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS ARC: export kmap ARC: Support syscall ABI v4 ARC: use correct offset in pt_regs for saving/restoring user mode r25 ARC: Elide redundant setup of DMA callbacks ARC: Call trace_hardirqs_on() before enabling irqs
2016-08-22powerpc: move hmi.c to arch/powerpc/kvm/Paolo Bonzini5-7/+10
hmi.c functions are unused unless sibling_subcore_state is nonzero, and that in turn happens only if KVM is in use. So move the code to arch/powerpc/kvm/, putting it under CONFIG_KVM_BOOK3S_HV_POSSIBLE rather than CONFIG_PPC_BOOK3S_64. The sibling_subcore_state is also included in struct paca_struct only if KVM is supported by the kernel. Cc: Daniel Axtens <dja@axtens.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@lists.ozlabs.org Cc: kvm-ppc@vger.kernel.org Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc: sysdev: cpm: fix gpio save_regs functionsChristophe Leroy2-3/+6
of_mm_gpiochip_add_data() calls mm_gc->save_regs() before setting the data. Therefore ->save_regs() cannot use gpiochip_get_data() [ 0.275940] Unable to handle kernel paging request for data at address 0x00000130 [ 0.283120] Faulting instruction address: 0xc01b44cc [ 0.288175] Oops: Kernel access of bad area, sig: 11 [#1] [ 0.293343] PREEMPT CMPC885 [ 0.296141] CPU: 0 PID: 1 Comm: swapper Not tainted 4.7.0-g65124df-dirty #68 [ 0.304131] task: c6074000 ti: c6080000 task.ti: c6080000 [ 0.309459] NIP: c01b44cc LR: c0011720 CTR: c0011708 [ 0.314372] REGS: c6081d90 TRAP: 0300 Not tainted (4.7.0-g65124df-dirty) [ 0.322267] MSR: 00009032 <EE,ME,IR,DR,RI> CR: 24000028 XER: 20000000 [ 0.328813] DAR: 00000130 DSISR: c0000000 GPR00: c01b6d0c c6081e40 c6074000 c6017000 c9028000 c601d028 c6081dd8 00000000 GPR08: c601d028 00000000 ffffffff 00000001 24000044 00000000 c0002790 00000000 GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 c05643b0 00000083 GPR24: c04a1a6c c0560000 c04a8308 c04c6480 c0012498 c6017000 c7ffcc78 c6017000 [ 0.360806] NIP [c01b44cc] gpiochip_get_data+0x4/0xc [ 0.365684] LR [c0011720] cpm1_gpio16_save_regs+0x18/0x44 [ 0.370972] Call Trace: [ 0.373451] [c6081e50] [c01b6d0c] of_mm_gpiochip_add_data+0x70/0xdc [ 0.379624] [c6081e70] [c00124c0] cpm_init_par_io+0x28/0x118 [ 0.385238] [c6081e80] [c04a8ac0] do_one_initcall+0xb0/0x17c [ 0.390819] [c6081ef0] [c04a8cbc] kernel_init_freeable+0x130/0x1dc [ 0.396924] [c6081f30] [c00027a4] kernel_init+0x14/0x110 [ 0.402177] [c6081f40] [c000b424] ret_from_kernel_thread+0x5c/0x64 [ 0.408233] Instruction dump: [ 0.411168] 4182fafc 3f80c040 48234c6d 3bc0fff0 3b9c5ed0 4bfffaf4 81290020 712a0004 [ 0.418825] 4182fb34 48234c51 4bfffb2c 81230004 <80690130> 4e800020 7c0802a6 9421ffe0 [ 0.426763] ---[ end trace fe4113ee21d72ffa ]--- fixes: e65078f1f3490 ("powerpc: sysdev: cpm1: use gpiochip data pointer") fixes: a14a2d484b386 ("powerpc: cpm_common: use gpiochip data pointer") Cc: stable@vger.kernel.org Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc/pseries: PACA save area fix for MCE vs MCENicholas Piggin1-1/+20
MCE must not enable MSR_RI until PACA_EXMC is no longer being used. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc/pseries: PACA save area fix for general exception vs MCENicholas Piggin1-4/+4
MCE must not use PACA_EXGEN. When a general exception enables MSR_RI, that means SPRN_SRR[01] and SPRN_SPRG are no longer used. However the PACA save area is still in use. Acked-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc/prom: Fix sub-processor option passed to ibm, ↵Michael Ellerman1-3/+6
client-architecture-support When booting from an OpenFirmware which supports it, we use the "ibm,client-architecture-support" firmware call to communicate our capabilities to firmware. The format of the structure we pass to firmware is specified in PAPR (Power Architecture Platform Requirements), or the public version LoPAPR (Linux on Power Architecture Platform Reference). Referring to table 244 in LoPAPR v1.1, option vector 5 contains a 4 byte field at bytes 17-20 for the "Platform Facilities Enable". This is followed by a 1 byte field at byte 21 for "Sub-Processor Represenation Level". Comparing to the code, there we have the Platform Facilities options (OV5_PFO_*) at byte 17, but we fail to pad that field out to its full width of 4 bytes. This means the OV5_SUB_PROCESSORS option is incorrectly placed at byte 18. Fix it by adding zero bytes for bytes 18, 19, 20, and comment the bytes to hopefully make it clearer in future. As far as I'm aware nothing actually consumes this value at this time, so the effect of this bug is nil in practice. It does mean we've been incorrectly setting bit 15 of the "Platform Facilities Enable" option for the past ~3 1/2 years, so we should avoid allocating that bit to anything else in future. Fixes: df77c7992029 ("powerpc/pseries: Update ibm,architecture.vec for PAPR 2.7/POWER8") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc, hotplug: Avoid to touch non-existent cpumasks.Boqun Feng1-1/+1
We observed a kernel oops when running a PPC guest with config NR_CPUS=4 and qemu option "-smp cores=1,threads=8": [ 30.634781] Unable to handle kernel paging request for data at address 0xc00000014192eb17 [ 30.636173] Faulting instruction address: 0xc00000000003e5cc [ 30.637069] Oops: Kernel access of bad area, sig: 11 [#1] [ 30.637877] SMP NR_CPUS=4 NUMA pSeries [ 30.638471] Modules linked in: [ 30.638949] CPU: 3 PID: 27 Comm: migration/3 Not tainted 4.7.0-07963-g9714b26 #1 [ 30.640059] task: c00000001e29c600 task.stack: c00000001e2a8000 [ 30.640956] NIP: c00000000003e5cc LR: c00000000003e550 CTR: 0000000000000000 [ 30.642001] REGS: c00000001e2ab8e0 TRAP: 0300 Not tainted (4.7.0-07963-g9714b26) [ 30.643139] MSR: 8000000102803033 <SF,VEC,VSX,FP,ME,IR,DR,RI,LE,TM[E]> CR: 22004084 XER: 00000000 [ 30.644583] CFAR: c000000000009e98 DAR: c00000014192eb17 DSISR: 40000000 SOFTE: 0 GPR00: c00000000140a6b8 c00000001e2abb60 c0000000016dd300 0000000000000003 GPR04: 0000000000000000 0000000000000004 c0000000016e5920 0000000000000008 GPR08: 0000000000000004 c00000014192eb17 0000000000000000 0000000000000020 GPR12: c00000000140a6c0 c00000000ffffc00 c0000000000d3ea8 c00000001e005680 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 c00000001e6b3a00 0000000000000000 0000000000000001 GPR24: c00000001ff85138 c00000001ff85130 000000001eb6f000 0000000000000001 GPR28: 0000000000000000 c0000000017014e0 0000000000000000 0000000000000018 [ 30.653882] NIP [c00000000003e5cc] __cpu_disable+0xcc/0x190 [ 30.654713] LR [c00000000003e550] __cpu_disable+0x50/0x190 [ 30.655528] Call Trace: [ 30.655893] [c00000001e2abb60] [c00000000003e550] __cpu_disable+0x50/0x190 (unreliable) [ 30.657280] [c00000001e2abbb0] [c0000000000aca0c] take_cpu_down+0x5c/0x100 [ 30.658365] [c00000001e2abc10] [c000000000163918] multi_cpu_stop+0x1a8/0x1e0 [ 30.659617] [c00000001e2abc60] [c000000000163cc0] cpu_stopper_thread+0xf0/0x1d0 [ 30.660737] [c00000001e2abd20] [c0000000000d8d70] smpboot_thread_fn+0x290/0x2a0 [ 30.661879] [c00000001e2abd80] [c0000000000d3fa8] kthread+0x108/0x130 [ 30.662876] [c00000001e2abe30] [c000000000009968] ret_from_kernel_thread+0x5c/0x74 [ 30.664017] Instruction dump: [ 30.664477] 7bde1f24 38a00000 787f1f24 3b600001 39890008 7d204b78 7d05e214 7d0b07b4 [ 30.665642] 796b1f24 7d26582a 7d204a14 7d29f214 <7d4048a8> 7d4a3878 7d4049ad 40c2fff4 [ 30.666854] ---[ end trace 32643b7195717741 ]--- The reason of this is that in __cpu_disable(), when we try to set the cpu_sibling_mask or cpu_core_mask of the sibling CPUs of the disabled one, we don't check whether the current configuration employs those sibling CPUs(hw threads). And if a CPU is not employed by a configuration, the percpu structures cpu_{sibling,core}_mask are not allocated, therefore accessing those cpumasks will result in problems as above. This patch fixes this problem by adding an addition check on whether the id is no less than nr_cpu_ids in the sibling CPU iteration code. Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc: migrate exception table users off module.h and onto extable.hPaul Gortmaker6-6/+7
These files were only including module.h for exception table related functions. We've now separated that content out into its own file "extable.h" so now move over to that and avoid all the extra header content in module.h that we don't really need to compile these files. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc/powernv/pci: fix iterator signednessAndrzej Hajda1-1/+1
Unsigned type is always non-negative, so the loop could not end in case condition is never true. The problem has been detected using semantic patch scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb)Mauricio Faria de Oliveira4-2/+46
This patch leverages 'struct pci_host_bridge' from the PCI subsystem in order to free the pci_controller only after the last reference to its devices is dropped (avoiding an oops in pcibios_release_device() if the last reference is dropped after pcibios_free_controller()). The patch relies on pci_host_bridge.release_fn() (and .release_data), which is called automatically by the PCI subsystem when the root bus is released (i.e., the last reference is dropped). Those fields are set via pci_set_host_bridge_release() (e.g. in the platform-specific implementation of pcibios_root_bridge_prepare()). It introduces the 'pcibios_free_controller_deferred()' .release_fn() and it expects .release_data to hold a pointer to the pci_controller. The function implictly calls 'pcibios_free_controller()', so an user must *NOT* explicitly call it if using the new _deferred() callback. The functionality is enabled for pseries (although it isn't platform specific, and may be used by cxl). Details on not-so-elegant design choices: - Use 'pci_host_bridge.release_data' field as pointer to associated 'struct pci_controller' so *not* to 'pci_bus_to_host(bridge->bus)' in pcibios_free_controller_deferred(). That's because pci_remove_root_bus() sets 'host_bridge->bus = NULL' (so, if the last reference is released after pci_remove_root_bus() runs, which eventually reaches pcibios_free_controller_deferred(), that would hit a null pointer dereference). The cxl/vphb.c code calls pci_remove_root_bus(), and the cxl folks are interested in this fix. Test-case #1 (hold references) # ls -ld /sys/block/sd* | grep -m1 0021:01:00.0 <...> /sys/block/sdaa -> ../devices/pci0021:01/0021:01:00.0/<...> # ls -ld /sys/block/sd* | grep -m1 0021:01:00.1 <...> /sys/block/sdab -> ../devices/pci0021:01/0021:01:00.1/<...> # cat >/dev/sdaa & pid1=$! # cat >/dev/sdab & pid2=$! # drmgr -w 5 -d 1 -c phb -s 'PHB 33' -r Validating PHB DLPAR capability...yes. [ 594.306719] pci_hp_remove_devices: PCI: Removing devices on bus 0021:01 [ 594.306738] pci_hp_remove_devices: Removing 0021:01:00.0... ... [ 598.236381] pci_hp_remove_devices: Removing 0021:01:00.1... ... [ 611.972077] pci_bus 0021:01: busn_res: [bus 01-ff] is released [ 611.972140] rpadlpar_io: slot PHB 33 removed # kill -9 $pid1 # kill -9 $pid2 [ 632.918088] pcibios_free_controller_deferred: domain 33, dynamic 1 Test-case #2 (don't hold references) # drmgr -w 5 -d 1 -c phb -s 'PHB 33' -r Validating PHB DLPAR capability...yes. [ 916.357363] pci_hp_remove_devices: PCI: Removing devices on bus 0021:01 [ 916.357386] pci_hp_remove_devices: Removing 0021:01:00.0... ... [ 920.566527] pci_hp_remove_devices: Removing 0021:01:00.1... ... [ 933.955873] pci_bus 0021:01: busn_res: [bus 01-ff] is released [ 933.955977] pcibios_free_controller_deferred: domain 33, dynamic 1 [ 933.955999] rpadlpar_io: slot PHB 33 removed Suggested-By: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com> Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Tested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> # cxl Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc: mpc8349emitx: Delete unnecessary assignment for the field "owner"Markus Elfring1-1/+0
The field "owner" is set by the core. Thus delete an unneeded initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc/512x: Delete unnecessary assignment for the field "owner"Markus Elfring1-1/+0
The field "owner" is set by the core. Thus delete an unneeded initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22powerpc: cputhreads: Add missing include fileGuenter Roeck1-0/+1
Powerpc builds may fail with the following build error. Error log: In file included from ./arch/powerpc/include/asm/mmu_context.h:11:0, from ./include/linux/mmu_context.h:4, from mm/mmu_context.c:8: ./arch/powerpc/include/asm/cputhreads.h: In function 'get_tensr': ./arch/powerpc/include/asm/cputhreads.h:101:2: error: implicit declaration of function 'cpu_has_feature' The problem can be triggered by configuring ppc64e_defconfig and selecting CONFIG_TICK_CPU_ACCOUNTING instead of CONFIG_VIRT_CPU_ACCOUNTING_NATIVE. Fixes: b92a226e5284 ("powerpc: Move cpu_has_feature() to a separate file") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-20parisc: Fix order of EREFUSED define in errno.hHelge Deller1-2/+2
When building gccgo in userspace, errno.h gets parsed and the go include file sysinfo.go is generated. Since EREFUSED is defined to the same value as ECONNREFUSED, and ECONNREFUSED is defined later on in errno.h, this leads to go complaining that EREFUSED isn't defined yet. Fix this trivial problem by moving the define of EREFUSED down after ECONNREFUSED in errno.h (and clean up the indenting while touching this line). Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org
2016-08-20parisc: Fix automatic selection of cr16 clocksourceHelge Deller2-20/+0
Commit 54b66800907 (parisc: Add native high-resolution sched_clock() implementation) added support to use the CPU-internal cr16 counters as reliable clocksource with the help of HAVE_UNSTABLE_SCHED_CLOCK. Sadly the commit missed to remove the hack which prevented cr16 to become the default clocksource even on SMP systems. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # 4.7+
2016-08-19ARC: export __udivdi3 for modulesVineet Gupta1-0/+2
Some module using div_u64() was failing to link because the libgcc 64-bit divide assist routine was not being exported for modules Reported-by: avinashp@quantenna.com Cc: stable@vger.kernel.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-08-19ARC: mm: fix build breakage with STRICT_MM_TYPECHECKSVineet Gupta1-1/+1
| CC mm/memory.o | In file included from ../mm/memory.c:53:0: | ../include/linux/pfn_t.h: In function ‘pfn_t_pte’: | ../include/linux/pfn_t.h:78:2: error: conversion to non-scalar type requested | return pfn_pte(pfn_t_to_pfn(pfn), pgprot); With STRICT_MM_TYPECHECKS pte_t is a struct and the offending code forces a cast which ends up shifting a struct and hence the gcc warning. Note that in recent past some of the arches (aarch64, s390) made STRICT_MM_TYPECHECKS default, but we don't for ARC as this leads to slightly worse generated code, given ARC ABI definition of returning structs (which pte_t would become) Quoting from ARC ABI... "Results of type struct are returned in a caller-supplied temporary variable whose address is passed in r0. For such functions, the arguments are shifted so that they are passed in r1 and up." So - struct to be returned would be allocated on stack requiring extra code at call sites - callee updates stack memory to facilitate the return (vs. simple MOV into return reg r0) Hence STRICT_MM_TYPECHECKS is not enabled by default for ARC Cc: <stable@vger.kernel.org> #4.4+ Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-08-19ARC: export kmapVineet Gupta1-0/+1
| MODPOST 7 modules | ERROR: "kmap" [fs/ext2/ext2.ko] undefined! | ../scripts/Makefile.modpost:91: recipe for target '__modpost' failed Cc: <stable@vger.kernel.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-08-19ARC: Support syscall ABI v4Vineet Gupta3-5/+14
The syscall ABI includes the gcc functional calling ABI since a syscall implies userland caller and kernel callee. The current gcc ABI (v3) for ARCv2 ISA required 64-bit data be passed in even-odd register pairs, (potentially punching reg holes when passing such values as args). This was partly driven by the fact that the double-word LDD/STD instructions in ARCv2 expect the register alignment and thus gcc forcing this avoids extra MOV at the cost of a few unused register (which we have plenty anyways). This however was rejected as part of upstreaming gcc port to HS. So the new ABI v4 doesn't enforce the even-odd reg restriction. Do note that for ARCompact ISA builds v3 and v4 are practically the same in terms of gcc code generation. In terms of change management, we infer the new ABI if gcc 6.x onwards is used for building the kernel. This also needs a stable backport to enable older kernels to work with new tools/user-space Cc: <stable@vger.kernel.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-08-19ARC: use correct offset in pt_regs for saving/restoring user mode r25Liav Rehana1-2/+2
User mode callee regs are explicitly collected before signal delivery or breakpoint trap. r25 is special for kernel as it serves as task pointer, so user mode value is clobbered very early. It is saved in pt_regs where generally only scratch (aka caller saved) regs are saved. The code to access the corresponding pt_regs location had a subtle bug as it was using load/store with scaling of offset, whereas the offset was already byte wise correct. So fix this by replacing LD.AS with a standard LD Cc: <stable@vger.kernel.org> Signed-off-by: Liav Rehana <liavr@mellanox.com> Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com> [vgupta: rewrote title and commit log] Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-08-19MIPS: KVM: Check for pfn noslot caseJames Hogan1-1/+1
When mapping a page into the guest we error check using is_error_pfn(), however this doesn't detect a value of KVM_PFN_NOSLOT, indicating an error HVA for the page. This can only happen on MIPS right now due to unusual memslot management (e.g. being moved / removed / resized), or with an Enhanced Virtual Memory (EVA) configuration where the default KVM_HVA_ERR_* and kvm_is_error_hva() definitions are unsuitable (fixed in a later patch). This case will be treated as a pfn of zero, mapping the first page of physical memory into the guest. It would appear the MIPS KVM port wasn't updated prior to being merged (in v3.10) to take commit 81c52c56e2b4 ("KVM: do not treat noslot pfn as a error pfn") into account (merged v3.8), which converted a bunch of is_error_pfn() calls to is_error_noslot_pfn(). Switch to using is_error_noslot_pfn() instead to catch this case properly. Fixes: 858dd5d45733 ("KVM/MIPS32: MMU/TLB operations for the Guest.") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> # 3.10.y- Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-08-18Merge tag 'devicetree-fixes-for-4.8' of ↵Linus Torvalds1-0/+6
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree fixes from Rob Herring: - a couple of DT node ref counting fixes - fix __unflatten_device_tree for PPC PCI hotplug case - rework marking irq controllers as OF_POPULATED in cases where real driver is used. - disable of_platform_default_populate_init on PPC. The change in initcall order causes problems which need to be sorted out later. * tag 'devicetree-fixes-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: fix reference counting in of_graph_get_endpoint_by_regs of/platform: disable the of_platform_default_populate_init() for all the ppc boards ARM: imx6: mark GPC node as not populated after irq init to probe pm domain driver of/irq: Mark interrupt controllers as populated before initialisation drivers/of: Validate device node in __unflatten_device_tree() of: Delete an unnecessary check before the function call "of_node_put"
2016-08-18Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2-10/+24
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "An initrd microcode loading fix, and an SMP bootup topology setup fix to resolve crashes on SGI/UV systems if the BIOS is configured in a certain way" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/smp: Fix __max_logical_packages value setup x86/microcode/AMD: Fix initrd loading with CONFIG_RANDOMIZE_MEMORY=y
2016-08-18Merge tag 'arm64-fixes' of ↵Linus Torvalds3-4/+14
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - Avoid a literal load with the MMU off on the CPU resume path (potential inconsistency between cache and RAM) - Build error with CONFIG_ACPI=n fixed - Compiler warning in the arch/arm64/mm/dump.c code fixed * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Fix shift warning in arch/arm64/mm/dump.c arm64: kernel: avoid literal load of virtual address with MMU off arm64: Fix NUMA build error when !CONFIG_ACPI
2016-08-18Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2-5/+17
Pull ARM fixes from Russell King: "Only three fixes this time: - Emil found an overflow problem with the memory layout sanity check. - Ard Biesheuvel noticed that late-allocated page tables (for EFI) weren't being properly constructed. - Guenter Roeck reported a problem found on qemu caused by the recent addr_limit changes" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: fix address limit restoration for undefined instructions ARM: 8591/1: mm: use fully constructed struct pages for EFI pgd allocations ARM: 8590/1: sanity_check_meminfo(): avoid overflow on vmalloc_limit
2016-08-18Merge tag 'pm-4.8-rc3' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fixes from Rafael Wysocki: "More hibernation-related material: one fix for a recent regression in the core, one small cleanup of the x86-64 resume code and a documentation update. Specifics: - Fix a hibernate core regression resulting from uncovering a latent bug in its implementation of memory bitmaps by a recent commit (James Morse). - Use __pa() to compute a physical address in the x86-64 code finalizing resume from hibernation (Rafael Wysocki). - Update power management documentation related to system sleep states to remove outdated information from it and to add a description of a recently introduced hibernation debug feature to it (Rafael Wysocki)" * tag 'pm-4.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / hibernate: Fix rtree_next_node() to avoid walking off list ends x86/power/64: Use __pa() for physical address computation PM / sleep: Update some system sleep documentation
2016-08-18arm64: Fix shift warning in arch/arm64/mm/dump.cCatalin Marinas1-3/+3
When building with 48-bit VAs and 16K page configuration, it's possible to get the following warning when building the arm64 page table dumping code: arch/arm64/mm/dump.c: In function ‘walk_pud’: arch/arm64/mm/dump.c:274:102: warning: right shift count >= width of type [-Wshift-count-overflow] This is because pud_offset(pgd, 0) performs a shift to the right by 36 while the value 0 has the type 'int' by default, therefore 32-bit. This patch modifies all the p*_offset() uses in arch/arm64/mm/dump.c to use 0UL for the address argument. Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-18Merge tag 'kvm-arm-for-v4.8-rc3' of ↵Paolo Bonzini3-11/+3
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/ARM Fixes for v4.8-rc3 This tag contains the following fixes on top of v4.8-rc1: - ITS init issues - ITS error handling issues - ITS IRQ leakage fix - Plug a couple of ITS race conditions - An erratum workaround for timers - Some removal of misleading use of errors and comments - A fix for GICv3 on 32-bit guests
2016-08-18kvm: nVMX: fix nested tsc scalingPeter Feiner1-4/+12
When the host supported TSC scaling, L2 would use a TSC multiplier of 0, which causes a VM entry failure. Now L2's TSC uses the same multiplier as L1. Signed-off-by: Peter Feiner <pfeiner@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-08-18KVM: nVMX: postpone VMCS changes on MSR_IA32_APICBASE writeRadim Krčmář1-0/+13
If vmcs12 does not intercept APIC_BASE writes, then KVM will handle the write with vmcs02 as the current VMCS. This will incorrectly apply modifications intended for vmcs01 to vmcs02 and L2 can use it to gain access to L0's x2APIC registers by disabling virtualized x2APIC while using msr bitmap that assumes enabled. Postpone execution of vmx_set_virtual_x2apic_mode until vmcs01 is the current VMCS. An alternative solution would temporarily make vmcs01 the current VMCS, but it requires more care. Fixes: 8d14695f9542 ("x86, apicv: add virtual x2apic support") Reported-by: Jim Mattson <jmattson@google.com> Reviewed-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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