Linux kernel documentation tree maintained by Jonathan Corbet http://mirrors.hust.edu.cn/git/lwn.git/atom?h=v3.14.5 2014-01-31T16:37:32+00:00 2014-01-31T16:37:32+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-01-31T16:37:32+00:00 urn:sha1:e2a0f813e0d53014b78aae76f0359c8a41f05eeb Pull more KVM updates from Paolo Bonzini: "Second batch of KVM updates. Some minor x86 fixes, two s390 guest features that need some handling in the host, and all the PPC changes. The PPC changes include support for little-endian guests and enablement for new POWER8 features" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (45 commits) x86, kvm: correctly access the KVM_CPUID_FEATURES leaf at 0x40000101 x86, kvm: cache the base of the KVM cpuid leaves kvm: x86: move KVM_CAP_HYPERV_TIME outside #ifdef KVM: PPC: Book3S PR: Cope with doorbell interrupts KVM: PPC: Book3S HV: Add software abort codes for transactional memory KVM: PPC: Book3S HV: Add new state for transactional memory powerpc/Kconfig: Make TM select VSX and VMX KVM: PPC: Book3S HV: Basic little-endian guest support KVM: PPC: Book3S HV: Add support for DABRX register on POWER7 KVM: PPC: Book3S HV: Prepare for host using hypervisor doorbells KVM: PPC: Book3S HV: Handle new LPCR bits on POWER8 KVM: PPC: Book3S HV: Handle guest using doorbells for IPIs KVM: PPC: Book3S HV: Consolidate code that checks reason for wake from nap KVM: PPC: Book3S HV: Implement architecture compatibility modes for POWER8 KVM: PPC: Book3S HV: Add handler for HV facility unavailable KVM: PPC: Book3S HV: Flush the correct number of TLB sets on POWER8 KVM: PPC: Book3S HV: Context-switch new POWER8 SPRs KVM: PPC: Book3S HV: Align physical and virtual CPU thread numbers KVM: PPC: Book3S HV: Don't set DABR on POWER8 kvm/ppc: IRQ disabling cleanup ... 2014-01-29T17:29:01+00:00 Paolo Bonzini pbonzini@redhat.com 2014-01-29T17:29:01+00:00 urn:sha1:b73117c49364551ff789db7c424a115ac5b77850 Conflicts: arch/powerpc/kvm/book3s_hv_rmhandlers.S arch/powerpc/kvm/booke.c 2014-01-29T05:55:25+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2014-01-29T05:55:25+00:00 urn:sha1:6e677ef6fbe9513051bd753ae670b586e8ea7df1 << This contains a fix for a chroma_defconfig build break that was introduced by e6500 tablewalk support, and a device tree binding patch that missed the previous pull request due to some last-minute polishing. >> 2014-01-29T05:53:55+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2014-01-29T05:53:55+00:00 urn:sha1:e9a371100dfdfa4c9f994059d19d98c9b4fd80af << Switch mpc512x to the common clock framework and adapt mpc512x drivers to use the new clock driver. Old PPC_CLOCK code is removed entirely since there are no users any more. >> 2014-01-28T05:11:26+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-01-28T05:11:26+00:00 urn:sha1:1b17366d695c8ab03f98d0155357e97a427e1dce Pull powerpc updates from Ben Herrenschmidt: "So here's my next branch for powerpc. A bit late as I was on vacation last week. It's mostly the same stuff that was in next already, I just added two patches today which are the wiring up of lockref for powerpc, which for some reason fell through the cracks last time and is trivial. The highlights are, in addition to a bunch of bug fixes: - Reworked Machine Check handling on kernels running without a hypervisor (or acting as a hypervisor). Provides hooks to handle some errors in real mode such as TLB errors, handle SLB errors, etc... - Support for retrieving memory error information from the service processor on IBM servers running without a hypervisor and routing them to the memory poison infrastructure. - _PAGE_NUMA support on server processors - 32-bit BookE relocatable kernel support - FSL e6500 hardware tablewalk support - A bunch of new/revived board support - FSL e6500 deeper idle states and altivec powerdown support You'll notice a generic mm change here, it has been acked by the relevant authorities and is a pre-req for our _PAGE_NUMA support" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (121 commits) powerpc: Implement arch_spin_is_locked() using arch_spin_value_unlocked() powerpc: Add support for the optimised lockref implementation powerpc/powernv: Call OPAL sync before kexec'ing powerpc/eeh: Escalate error on non-existing PE powerpc/eeh: Handle multiple EEH errors powerpc: Fix transactional FP/VMX/VSX unavailable handlers powerpc: Don't corrupt transactional state when using FP/VMX in kernel powerpc: Reclaim two unused thread_info flag bits powerpc: Fix races with irq_work Move precessing of MCE queued event out from syscall exit path. pseries/cpuidle: Remove redundant call to ppc64_runlatch_off() in cpu idle routines powerpc: Make add_system_ram_resources() __init powerpc: add SATA_MV to ppc64_defconfig powerpc/powernv: Increase candidate fw image size powerpc: Add debug checks to catch invalid cpu-to-node mappings powerpc: Fix the setup of CPU-to-Node mappings during CPU online powerpc/iommu: Don't detach device without IOMMU group powerpc/eeh: Hotplug improvement powerpc/eeh: Call opal_pci_reinit() on powernv for restoring config space powerpc/eeh: Add restore_config operation ... 2014-01-28T03:45:43+00:00 Michael Ellerman mpe@ellerman.id.au 2014-01-15T07:14:28+00:00 urn:sha1:3405d230b374b6923878b21b8d708d7db1f734ef This commit adds the architecture support required to enable the optimised implementation of lockrefs. That's as simple as defining arch_spin_value_unlocked() and selecting the Kconfig option. We also define cmpxchg64_relaxed(), because the lockref code does not need the cmpxchg to have barrier semantics. Using Linus' test case[1] on one system I see a 4x improvement for the basic enablement, and a further 1.3x for cmpxchg64_relaxed(), for a total of 5.3x vs the baseline. On another system I see more like 2x improvement. [1]: http://marc.info/?l=linux-fsdevel&m=137782380714721&w=4 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 2014-01-27T15:01:18+00:00 Michael Neuling mikey@neuling.org 2014-01-08T10:25:31+00:00 urn:sha1:7b37a1232273912dd57cd72b82fe70407bff7683 There are no processors in existence that have TM but no VMX or VSX. So let's makes CONFIG_PPC_TRANSACTIONAL_MEM select both CONFIG_VSX and CONFIG_ALTIVEC. This makes the code a lot simpler by removing the need for a bunch of #ifdefs. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> 2014-01-25T01:17:30+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-01-25T01:17:30+00:00 urn:sha1:1b59bab55e36082b1db3dc81bb32475616487a98 Pull input subsystem updates from Dmitry Torokhov: "Just a swath of driver fixes and cleanups, no new drivers this time (although ALPS now supports one of the newer protocols, more to come)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits) Input: wacom - add support for DTU-1031 Input: wacom - fix wacom->shared guards for dual input devices Input: edt_ft5x06 - use devm_* functions where appropriate Input: hyperv-keyboard - pass through 0xE1 prefix Input: logips2pp - fix spelling s/reciver/receiver/ Input: delete non-required instances of include <linux/init.h> Input: twl4030-keypad - convert to using managed resources Input: twl6040-vibra - remove unneeded check for CONFIG_OF Input: twl4030-keypad - add device tree support Input: twl6040-vibra - add missing of_node_put Input: twl4030-vibra - add missing of_node_put Input: i8042 - cleanup SERIO_I8042 dependencies Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on x86 Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on unicore32 Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on sparc Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO for SH_CAYMAN Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on powerpc Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on mips Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on IA64 Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on ARM/Footbridge ... 2014-01-24T00:37:03+00:00 Alexandre Bounine alexandre.bounine@idt.com 2014-01-23T23:56:04+00:00 urn:sha1:56abde7239cb76d4dffcb79c8f96c1dab1cc81d1 Allow modular build option for RapidIO subsystem core in MIPS and PowerPC architectural branches. At this moment modular RapidIO subsystem build is enabled only for platforms that use PCI/PCIe based RapidIO controllers (e.g. Tsi721). Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Jean Delvare <jdelvare@suse.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2014-01-18T00:43:14+00:00 Scott Wood scottwood@freescale.com 2014-01-18T00:36:38+00:00 urn:sha1:9841c79c890cf7ef9ffa2c86c9924113c9a88244 ...and make CONFIG_PPC_FSL_BOOK3E conflict with CONFIG_PPC_64K_PAGES. This fixes a build break with CONFIG_PPC_64K_PAGES on 64-bit book3e, that was introduced by commit 28efc35fe68dacbddc4b12c2fa8f2df1593a4ad3 ("powerpc/e6500: TLB miss handler with hardware tablewalk support"). Signed-off-by: Scott Wood <scottwood@freescale.com>