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* Merge branch 'for-linus' of ↵Linus Torvalds2017-05-163-4/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: - convert the debug feature to refcount_t - reduce the copy size for strncpy_from_user - 8 bug fixes * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/virtio: change virtio_feature_desc:features type to __le32 s390: convert debug_info.ref_count from atomic_t to refcount_t s390: move _text symbol to address higher than zero s390/qdio: increase string buffer size s390/ccwgroup: increase string buffer size s390/topology: let topology_mnest_limit() return unsigned char s390/uaccess: use sane length for __strncpy_from_user() s390/uprobes: fix compile for !KPROBES s390/ftrace: fix compile for !MODULES s390/cputime: fix incorrect system time
| * s390/virtio: change virtio_feature_desc:features type to __le32Heiko Carstens2017-05-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The feature member of virtio_feature_desc contains little endian values, given that it contents will be converted with le32_to_cpu(). The "wrong" __u32 type leads to the sparse warnings below. In order to avoid them, use the correct __le32 type instead. drivers/s390/virtio/virtio_ccw.c:749:14: warning: cast to restricted __le32 drivers/s390/virtio/virtio_ccw.c:762:28: warning: cast to restricted __le32 Acked-by: Halil Pasic <pasic@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/qdio: increase string buffer sizeHeiko Carstens2017-05-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid false positive warnings like this with gcc 7.1: drivers/s390/cio/qdio_debug.h:63:4: note: 'snprintf' output between 8 and 17 bytes into a destination of size 16 snprintf(debug_buffer, QDIO_DBF_LEN, text); and simply increase the size of the string buffer. Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/ccwgroup: increase string buffer sizeHeiko Carstens2017-05-091-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid false positive warnings like this with gcc 7.1: drivers/s390/cio/ccwgroup.c:41:21: warning: '%d' directive writing between 1 and 10 bytes into a region of size 4 sprintf(str, "cdev%d", i); and simply increase the size of the string buffer. Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2017-05-167-24/+69
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Track alignment in BPF verifier so that legitimate programs won't be rejected on !CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS architectures. 2) Make tail calls work properly in arm64 BPF JIT, from Deniel Borkmann. 3) Make the configuration and semantics Generic XDP make more sense and don't allow both generic XDP and a driver specific instance to be active at the same time. Also from Daniel. 4) Don't crash on resume in xen-netfront, from Vitaly Kuznetsov. 5) Fix use-after-free in VRF driver, from Gao Feng. 6) Use netdev_alloc_skb_ip_align() to avoid unaligned IP headers in qca_spi driver, from Stefan Wahren. 7) Always run cleanup routines in BPF samples when we get SIGTERM, from Andy Gospodarek. 8) The mdio phy code should bring PHYs out of reset using the shared GPIO lines before invoking bus->reset(). From Florian Fainelli. 9) Some USB descriptor access endian fixes in various drivers from Johan Hovold. 10) Handle PAUSE advertisements properly in mlx5 driver, from Gal Pressman. 11) Fix reversed test in mlx5e_setup_tc(), from Saeed Mahameed. 12) Cure netdev leak in AF_PACKET when using timestamping via control messages. From Douglas Caetano dos Santos. 13) netcp doesn't support HWTSTAMP_FILTER_ALl, reject it. From Miroslav Lichvar. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits) ldmvsw: stop the clean timer at beginning of remove ldmvsw: unregistering netdev before disable hardware net: netcp: fix check of requested timestamping filter ipv6: avoid dad-failures for addresses with NODAD qed: Fix uninitialized data in aRFS infrastructure mdio: mux: fix device_node_continue.cocci warnings net/packet: fix missing net_device reference release net/mlx4_core: Use min3 to select number of MSI-X vectors macvlan: Fix performance issues with vlan tagged packets net: stmmac: use correct pointer when printing normal descriptor ring net/mlx5: Use underlay QPN from the root name space net/mlx5e: IPoIB, Only support regular RQ for now net/mlx5e: Fix setup TC ndo net/mlx5e: Fix ethtool pause support and advertise reporting net/mlx5e: Use the correct pause values for ethtool advertising vmxnet3: ensure that adapter is in proper state during force_close sfc: revert changes to NIC revision numbers net: ch9200: add missing USB-descriptor endianness conversions net: irda: irda-usb: fix firmware name on big-endian hosts net: dsa: mv88e6xxx: add default case to switch ...
| * | s390/qeth: add missing hash table initializationsUrsula Braun2017-05-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 5f78e29ceebf ("qeth: optimize IP handling in rx_mode callback") added new hash tables, but missed to initialize them. Fixes: 5f78e29ceebf ("qeth: optimize IP handling in rx_mode callback") Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Reviewed-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: avoid null pointer dereference on OSNJulian Wiedmann2017-05-111-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | Access card->dev only after checking whether's its valid. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: unbreak OSM and OSN supportJulian Wiedmann2017-05-117-20/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit b4d72c08b358 ("qeth: bridgeport support - basic control") broke the support for OSM and OSN devices as follows: As OSM and OSN are L2 only, qeth_core_probe_device() does an early setup by loading the l2 discipline and calling qeth_l2_probe_device(). In this context, adding the l2-specific bridgeport sysfs attributes via qeth_l2_create_device_attributes() hits a BUG_ON in fs/sysfs/group.c, since the basic sysfs infrastructure for the device hasn't been established yet. Note that OSN actually has its own unique sysfs attributes (qeth_osn_devtype), so the additional attributes shouldn't be created at all. For OSM, add a new qeth_l2_devtype that contains all the common and l2-specific sysfs attributes. When qeth_core_probe_device() does early setup for OSM or OSN, assign the corresponding devtype so that the ccwgroup probe code creates the full set of sysfs attributes. This allows us to skip qeth_l2_create_device_attributes() in case of an early setup. Any device that can't do early setup will initially have only the generic sysfs attributes, and when it's probed later qeth_l2_probe_device() adds the l2-specific attributes. If an early-setup device is removed (by calling ccwgroup_ungroup()), device_unregister() will - using the devtype - delete the l2-specific attributes before qeth_l2_remove_device() is called. So make sure to not remove them twice. What complicates the issue is that qeth_l2_probe_device() and qeth_l2_remove_device() is also called on a device when its layer2 attribute changes (ie. its layer mode is switched). For early-setup devices this wouldn't work properly - we wouldn't remove the l2-specific attributes when switching to L3. But switching the layer mode doesn't actually make any sense; we already decided that the device can only operate in L2! So just refuse to switch the layer mode on such devices. Note that OSN doesn't have a layer2 attribute, so we only need to special-case OSM. Based on an initial patch by Ursula Braun. Fixes: b4d72c08b358 ("qeth: bridgeport support - basic control") Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: handle sysfs error during initializationUrsula Braun2017-05-114-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When setting up the device from within the layer discipline's probe routine, creating the layer-specific sysfs attributes can fail. Report this error back to the caller, and handle it by releasing the layer discipline. Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> [jwi: updated commit msg, moved an OSN change to a subsequent patch] Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds2017-05-102-6/+9
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull virtio updates from Michael Tsirkin: "Fixes, cleanups, performance A bunch of changes to virtio, most affecting virtio net. Also ptr_ring batched zeroing - first of batching enhancements that seems ready." * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: s390/virtio: change maintainership tools/virtio: fix spelling mistake: "wakeus" -> "wakeups" virtio_net: tidy a couple debug statements ptr_ring: support testing different batching sizes ringtest: support test specific parameters ptr_ring: batch ring zeroing virtio: virtio_driver doc virtio_net: don't reset twice on XDP on/off virtio_net: fix support for small rings virtio_net: reduce alignment for buffers virtio_net: rework mergeable buffer handling virtio_net: allow specifying context for rx virtio: allow extra context per descriptor tools/virtio: fix build breakage virtio: add context flag to find vqs virtio: wrap find_vqs ringtest: fix an assert statement
| * | virtio: add context flag to find vqsMichael S. Tsirkin2017-05-022-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allows maintaining extra context per vq. For ease of use, passing in NULL is legal and disables the feature for all vqs. Includes fixes by Christian for s390, acked by Cornelia. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* | | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2017-05-081-1/+3
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM updates from Paolo Bonzini: "ARM: - HYP mode stub supports kexec/kdump on 32-bit - improved PMU support - virtual interrupt controller performance improvements - support for userspace virtual interrupt controller (slower, but necessary for KVM on the weird Broadcom SoCs used by the Raspberry Pi 3) MIPS: - basic support for hardware virtualization (ImgTec P5600/P6600/I6400 and Cavium Octeon III) PPC: - in-kernel acceleration for VFIO s390: - support for guests without storage keys - adapter interruption suppression x86: - usual range of nVMX improvements, notably nested EPT support for accessed and dirty bits - emulation of CPL3 CPUID faulting generic: - first part of VCPU thread request API - kvm_stat improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits) kvm: nVMX: Don't validate disabled secondary controls KVM: put back #ifndef CONFIG_S390 around kvm_vcpu_kick Revert "KVM: Support vCPU-based gfn->hva cache" tools/kvm: fix top level makefile KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING KVM: Documentation: remove VM mmap documentation kvm: nVMX: Remove superfluous VMX instruction fault checks KVM: x86: fix emulation of RSM and IRET instructions KVM: mark requests that need synchronization KVM: return if kvm_vcpu_wake_up() did wake up the VCPU KVM: add explicit barrier to kvm_vcpu_kick KVM: perform a wake_up in kvm_make_all_cpus_request KVM: mark requests that do not need a wakeup KVM: remove #ifndef CONFIG_S390 around kvm_vcpu_wake_up KVM: x86: always use kvm_make_request instead of set_bit KVM: add kvm_{test,clear}_request to replace {test,clear}_bit s390: kvm: Cpu model support for msa6, msa7 and msa8 KVM: x86: remove irq disablement around KVM_SET_CLOCK/KVM_GET_CLOCK kvm: better MWAIT emulation for guests KVM: x86: virtualize cpuid faulting ...
| * | | s390/sclp: Detect KSS facilityFarhan Ali2017-04-211-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Let's detect the keyless subset facility. Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* | | | Merge tag 'libnvdimm-for-4.12' of ↵Linus Torvalds2017-05-062-12/+34
|\ \ \ \ | |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "The bulk of this has been in multiple -next releases. There were a few late breaking fixes and small features that got added in the last couple days, but the whole set has received a build success notification from the kbuild robot. Change summary: - Region media error reporting: A libnvdimm region device is the parent to one or more namespaces. To date, media errors have been reported via the "badblocks" attribute attached to pmem block devices for namespaces in "raw" or "memory" mode. Given that namespaces can be in "device-dax" or "btt-sector" mode this new interface reports media errors generically, i.e. independent of namespace modes or state. This subsequently allows userspace tooling to craft "ACPI 6.1 Section 9.20.7.6 Function Index 4 - Clear Uncorrectable Error" requests and submit them via the ioctl path for NVDIMM root bus devices. - Introduce 'struct dax_device' and 'struct dax_operations': Prompted by a request from Linus and feedback from Christoph this allows for dax capable drivers to publish their own custom dax operations. This fixes the broken assumption that all dax operations are related to a persistent memory device, and makes it easier for other architectures and platforms to add customized persistent memory support. - 'libnvdimm' core updates: A new "deep_flush" sysfs attribute is available for storage appliance applications to manually trigger memory controllers to drain write-pending buffers that would otherwise be flushed automatically by the platform ADR (asynchronous-DRAM-refresh) mechanism at a power loss event. Support for "locked" DIMMs is included to prevent namespaces from surfacing when the namespace label data area is locked. Finally, fixes for various reported deadlocks and crashes, also tagged for -stable. - ACPI / nfit driver updates: General updates of the nfit driver to add DSM command overrides, ACPI 6.1 health state flags support, DSM payload debug available by default, and various fixes. Acknowledgements that came after the branch was pushed: - commmit 565851c972b5 "device-dax: fix sysfs attribute deadlock": Tested-by: Yi Zhang <yizhan@redhat.com> - commit 23f498448362 "libnvdimm: rework region badblocks clearing" Tested-by: Toshi Kani <toshi.kani@hpe.com>" * tag 'libnvdimm-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (52 commits) libnvdimm, pfn: fix 'npfns' vs section alignment libnvdimm: handle locked label storage areas libnvdimm: convert NDD_ flags to use bitops, introduce NDD_LOCKED brd: fix uninitialized use of brd->dax_dev block, dax: use correct format string in bdev_dax_supported device-dax: fix sysfs attribute deadlock libnvdimm: restore "libnvdimm: band aid btt vs clear poison locking" libnvdimm: fix nvdimm_bus_lock() vs device_lock() ordering libnvdimm: rework region badblocks clearing acpi, nfit: kill ACPI_NFIT_DEBUG libnvdimm: fix clear length of nvdimm_forget_poison() libnvdimm, pmem: fix a NULL pointer BUG in nd_pmem_notify libnvdimm, region: sysfs trigger for nvdimm_flush() libnvdimm: fix phys_addr for nvdimm_clear_poison x86, dax, pmem: remove indirection around memcpy_from_pmem() block: remove block_device_operations ->direct_access() block, dax: convert bdev_dax_supported() to dax_direct_access() filesystem-dax: convert to dax_direct_access() Revert "block: use DAX for partition table reads" ext2, ext4, xfs: retrieve dax_device for iomap operations ...
| * | | block: remove block_device_operations ->direct_access()Dan Williams2017-04-251-16/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that all the producers and consumers of dax interfaces have been converted to using dax_operations on a dax_device, remove the block device direct_access enabling. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| * | | dcssblk: add dax_operations supportDan Williams2017-04-202-9/+47
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Setup a dax_dev to have the same lifetime as the dcssblk block device and add a ->direct_access() method that is equivalent to dcssblk_direct_access(). Once fs/dax.c has been converted to use dax_operations the old dcssblk_direct_access() will be removed. Reported-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2017-05-0310-483/+318
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Millar: "Here are some highlights from the 2065 networking commits that happened this development cycle: 1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri) 2) Add a generic XDP driver, so that anyone can test XDP even if they lack a networking device whose driver has explicit XDP support (me). 3) Sparc64 now has an eBPF JIT too (me) 4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei Starovoitov) 5) Make netfitler network namespace teardown less expensive (Florian Westphal) 6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana) 7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger) 8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky) 9) Multiqueue support in stmmac driver (Joao Pinto) 10) Remove TCP timewait recycling, it never really could possibly work well in the real world and timestamp randomization really zaps any hint of usability this feature had (Soheil Hassas Yeganeh) 11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay Aleksandrov) 12) Add socket busy poll support to epoll (Sridhar Samudrala) 13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso, and several others) 14) IPSEC hw offload infrastructure (Steffen Klassert)" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits) tipc: refactor function tipc_sk_recv_stream() tipc: refactor function tipc_sk_recvmsg() net: thunderx: Optimize page recycling for XDP net: thunderx: Support for XDP header adjustment net: thunderx: Add support for XDP_TX net: thunderx: Add support for XDP_DROP net: thunderx: Add basic XDP support net: thunderx: Cleanup receive buffer allocation net: thunderx: Optimize CQE_TX handling net: thunderx: Optimize RBDR descriptor handling net: thunderx: Support for page recycling ipx: call ipxitf_put() in ioctl error path net: sched: add helpers to handle extended actions qed*: Fix issues in the ptp filter config implementation. qede: Fix concurrency issue in PTP Tx path processing. stmmac: Add support for SIMATIC IOT2000 platform net: hns: fix ethtool_get_strings overflow in hns driver tcp: fix wraparound issue in tcp_lp bpf, arm64: fix jit branch offset related to ldimm64 bpf, arm64: implement jiting of BPF_XADD ...
| * | | s390/qeth: remove unimplemented gdev routinesJulian Wiedmann2017-04-112-19/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | prepare() and complete() are not implemented by any discipline, so just drop all the indirection. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Reviewed-by: Hans Wippel <hwippel@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: use LINK_MODE_* to report the link characteristicsJulian Wiedmann2017-04-111-24/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LINK_MODE_* replaces the u32-limited SUPPORTED_* / ENABLED_* definitions. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: convert to ETHTOOL_GLINKSETTINGS APIJulian Wiedmann2017-04-114-42/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | get_settings() is deprecated and lacks support for higher link speeds, so implement get_link_ksettings() instead. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: clean up qeth_set_ecmd_adv_sup()Julian Wiedmann2017-04-111-29/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for moving to get_link_ksettings(), clean up how we build the supported and advertised port/speed masks. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: use and remove some definesJulian Wiedmann2017-04-112-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. a buffer has 16 is_header flags, because that's its # of elements 2. replace the last occurrence of QETH_HEADER_SIZE, and remove it Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: use correct return type for hard_start_xmit()Julian Wiedmann2017-04-112-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ndo_start_xmit() expects us to return netdev_tx_t here... Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: remove unused parameterJulian Wiedmann2017-04-114-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'elements_needed' is not used in qeth_do_send_packet_fast(), so consequently remove it. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: move gdev shutdown handler to coreJulian Wiedmann2017-04-114-27/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Duplicated code. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: move NAPI poll routine to coreJulian Wiedmann2017-04-114-169/+97
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Identical code, we just need to call a layer-specific hook to process any received buffer. qeth_buffer_reclaim_work() is shuffled around to avoid a forward declaration for qeth_queue_input_buffer(). Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: move common ioctl handling to coreJulian Wiedmann2017-04-114-99/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's a number of layer-independent ioctls that we can handle in core, and reduce code duplication. For layer-specific ioctls, add a do_ioctl() discipline hook. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/netiucv: improve endianness handlingHans Wippel2017-04-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace ntohs with endianness conversion for the SKB protocol assignment to avoid an endianness warning reported by sparse. No functional change. Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/ctcm: improve endianness handlingHans Wippel2017-04-072-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use endianness conversions for SKB protocol assignments and usage to avoid endianness warnings reported by sparse. No functional changes. Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: improve endianness handlingHans Wippel2017-04-074-31/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid endianness warnings reported by sparse by (1) using endianness conversions for assigning and using network packet fields, and (2) removing unnecessary endianness conversions from qeth_l3_rebuild_skb. No functional changes. Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: Remove unused codeJulian Wiedmann2017-04-076-32/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. options.add_hhlen is set but never used, drop it 2. clean up no longer required forward declarations 3. delete all sorts of unused defines Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: remove unused return valueJulian Wiedmann2017-04-072-11/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qeth_qdio_output_handler() is the only caller of qeth_handle_send_error() and doesn't care about the return value. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: fix up ssqd tracingJulian Wiedmann2017-04-071-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ac fields are bitmaps, so format them as hex. While at it, also print the ac2 field. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | s390/qeth: use QDIO_*_QFMT definesJulian Wiedmann2017-04-071-6/+4
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | better use the constant definitions. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2017-05-0214-53/+2077
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: - three merges for KVM/s390 with changes for vfio-ccw and cpacf. The patches are included in the KVM tree as well, let git sort it out. - add the new 'trng' random number generator - provide the secure key verification API for the pkey interface - introduce the z13 cpu counters to perf - add a new system call to set up the guarded storage facility - simplify TASK_SIZE and arch_get_unmapped_area - export the raw STSI data related to CPU topology to user space - ... and the usual churn of bug-fixes and cleanups. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (74 commits) s390/crypt: use the correct module alias for paes_s390. s390/cpacf: Introduce kma instruction s390/cpacf: query instructions use unique parameters for compatibility with KMA s390/trng: Introduce s390 TRNG device driver. s390/crypto: Provide s390 specific arch random functionality. s390/crypto: Add new subfunctions to the cpacf PRNO function. s390/crypto: Renaming PPNO to PRNO. s390/pageattr: avoid unnecessary page table splitting s390/mm: simplify arch_get_unmapped_area[_topdown] s390/mm: make TASK_SIZE independent from the number of page table levels s390/gs: add regset for the guarded storage broadcast control block s390/kvm: Add use_cmma field to mm_context_t s390/kvm: Add PGSTE manipulation functions vfio: ccw: improve error handling for vfio_ccw_mdev_remove vfio: ccw: remove unnecessary NULL checks of a pointer s390/spinlock: remove compare and delay instruction s390/spinlock: use atomic primitives for spinlocks s390/cpumf: simplify detection of guest samples s390/pci: remove forward declaration s390/pci: increase the PCI_NR_FUNCTIONS default ...
| * | Merge tag 'vfio-ccw-20170413' of ↵Martin Schwidefsky2017-04-242-33/+7
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw into features Pull vfio-ccw fixes from Cornelia Huck: Two fixes for the new vfio-ccw support.
| | * | vfio: ccw: improve error handling for vfio_ccw_mdev_removeDong Jia Shi2017-04-121-11/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When vfio_ccw_mdev_reset fails during the remove process of the mdev, the current implementation simply returns. The failure indicates that the subchannel device is in a NOT_OPER state, thus the right thing to do should be removing the mdev. While we are at here, reverse the condition check to make the code more concise and readable. Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170412090816.79108-3-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: remove unnecessary NULL checks of a pointerDong Jia Shi2017-04-122-22/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove several unnecessary checks for the @private pointer, since it can never be NULL in these places. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170412090816.79108-2-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| * | | Merge branch 'vfio-ccw-for-martin' of ↵Martin Schwidefsky2017-03-3110-46/+2023
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw into features Pull vfio-ccw branch to add the basic channel I/O passthrough intrastructure based on vfio. The focus is on supporting dasd-eckd(cu_type/dev_type = 0x3990/0x3390) as the target device. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| | * | vfio: ccw: introduce support for ccw0Dong Jia Shi2017-03-311-3/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Although Linux does not use format-0 channel command words (CCW0) these are a non-optional part of the platform spec, and for the sake of platform compliance, and possibly some non-Linux guests, we have to support CCW0. Making the kernel execute a format 0 channel program is too much hassle because we would need to allocate and use memory which can be addressed by 24 bit physical addresses (because of CCW0.cda). So we implement CCW0 support by translating the channel program into an equivalent CCW1 program instead. Based upon an orginal patch by Kai Yue Wang. Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-16-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: introduce a finite state machineDong Jia Shi2017-03-315-107/+287
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current implementation doesn't check if the subchannel is in a proper device state when handling an event. Let's introduce a finite state machine to manage the state/event change. Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-14-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: return I/O results asynchronouslyDong Jia Shi2017-03-313-31/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce a singlethreaded workqueue to handle the I/O interrupts. With the work added to this queue, we store the I/O results to the io_region of the subchannel, then signal the userspace program to handle the results. Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-13-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: realize VFIO_DEVICE_G(S)ET_IRQ_INFO ioctlsDong Jia Shi2017-03-312-1/+126
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Realize VFIO_DEVICE_GET_IRQ_INFO ioctl to retrieve VFIO_CCW_IO_IRQ information. Realize VFIO_DEVICE_SET_IRQS ioctl to set an eventfd fd for VFIO_CCW_IO_IRQ. Once a write operation to the ccw_io_region was performed, trigger a signal on this fd. Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Message-Id: <20170317031743.40128-12-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: realize VFIO_DEVICE_RESET ioctlDong Jia Shi2017-03-311-14/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce VFIO_DEVICE_RESET ioctl for vfio-ccw to make it possible to hot-reset the device. We try to achieve a reset by first disabling the subchannel and then enabling it again: this should clear all state at the subchannel. Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-11-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: realize VFIO_DEVICE_GET_REGION_INFO ioctlDong Jia Shi2017-03-311-0/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce device information about vfio-ccw: VFIO_DEVICE_FLAGS_CCW. Realize VFIO_DEVICE_GET_REGION_INFO ioctl for vfio-ccw. Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Message-Id: <20170317031743.40128-10-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: handle ccw command requestDong Jia Shi2017-03-313-4/+148
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We implement the basic ccw command handling infrastructure here: 1. Translate the ccw commands. 2. Issue the translated ccw commands to the device. 3. Once we get the execution result, update the guest SCSW with it. Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-9-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: introduce ccw_io_regionDong Jia Shi2017-03-312-0/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To provide user-space a set of interfaces to: 1. pass in a ccw program to perform an I/O operation. 2. read back I/O results of the completed I/O operations. We introduce an MMIO region for the vfio-ccw device here. This region is defined to content: 1. areas to store arguments that an ssch required. 2. areas to store the I/O results. Using pwrite/pread to the device on this region, a user-space program could write/read data to/from the vfio-ccw device. Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-8-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: register vfio_ccw to the mediated device frameworkDong Jia Shi2017-03-314-2/+170
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To make vfio support subchannel devices, we need to leverage the mediated device framework to create a mediated device for the subchannel device. This registers the subchannel device to the mediated device framework during probe to enable mediated device creation. Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-7-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: introduce channel program interfacesDong Jia Shi2017-03-313-1/+859
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce ccwchain structure and helper functions that can be used to handle a channel program issued from a virtual machine. The following limitations apply: 1. Supports only prefetch enabled mode. 2. Supports idal(c64) ccw chaining. 3. Supports 4k idaw. 4. Supports ccw1. 5. Supports direct ccw chaining by translating them to idal ccws. CCW translation requires to leverage the vfio_(un)pin_pages interfaces to pin/unpin sets of mem pages frequently. Currently we have a lack of support to do this in an efficient way. So we introduce pfn_array data structure and helper functions to handle pin/unpin operations here. Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-6-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| | * | vfio: ccw: basic implementation for vfio_ccw driverDong Jia Shi2017-03-313-0/+290
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To make vfio support subchannel devices, we need a css driver for the vfio subchannels. This patch adds a basic vfio-ccw subchannel driver for this purpose. To enable VFIO for vfio-ccw, enable S390_CCW_IOMMU config option and configure VFIO as required. Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-5-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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