- 15 Sep, 2016 40 commits
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Tomas Henzl authored
[ Upstream commit b99dbe56 ] A barrier should be added to ensure proper ordering of memory mapped writes. Signed-off-by:
Tomas Henzl <thenzl@redhat.com> Reviewed-by:
Kashyap Desai <kashyap.desai@broadcom.com> Acked-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Sasha Levin <alexander.levin@verizon.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Sumit Saxena authored
[ Upstream commit ea1c928b ] Inside compat IOCTL hook of driver, driver was using wrong address of ioc->frame.raw which leads sense_ioc_ptr to be calculated wrongly and failing IOCTL. Signed-off-by:
Sumit Saxena <sumit.saxena@avagotech.com> Reviewed-by:
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Sumit Saxena authored
[ Upstream commit 11c71cb4 ] This patch will do synhronization between OCR function and AEN function using "reset_mutex" lock. reset_mutex will be acquired only in the first half of the AEN function which issues a DCMD. Second half of the function which calls SCSI API (scsi_add_device/scsi_remove_device) should be out of reset_mutex to avoid deadlock between scsi_eh thread and driver. During chip reset (inside OCR function), there should not be any PCI access and AEN function (which is called in delayed context) may be firing DCMDs (doing PCI writes) when chip reset is happening in parallel which will cause FW fault. This patch will solve the problem by making AEN thread and OCR thread mutually exclusive. Signed-off-by:
Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by:
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Sebastian Ott authored
[ Upstream commit 9f3d6d7a ] Per channel path measurement characteristics are obtained during channel path registration. However if some properties of a channel path change we don't update the measurement characteristics. Make sure to update the characteristics when we change the properties of a channel path or receive a notification from FW about such a change. Signed-off-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by:
Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Sebastian Ott authored
[ Upstream commit 61f0bfcf ] Make sure that in all cases where we could not obtain measurement characteristics the associated fields are set to invalid values. Note: without this change the "shared" capability of a channel path for which we could not obtain the measurement characteristics was incorrectly displayed as 0 (not shared). We will now correctly report "unknown" in this case. Signed-off-by:
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Sebastian Ott authored
[ Upstream commit 0d9bfe91 ] Measurement characteristics are allocated during channel path registration but not freed during deregistration. Fix this by embedding these characteristics inside struct channel_path. Signed-off-by:
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Ursula Braun authored
[ Upstream commit e5ebe632 ] /sys/class/net/<interface>/operstate for an active qeth network interface offen shows "unknown", which translates to "state UNKNOWN in output of "ip link show". It is caused by a missing initialization of the __LINK_STATE_NOCARRIER bit in the net_device state field. This patch adds a netif_carrier_off() invocation when creating the net_device for a qeth device. Signed-off-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Acked-by:
Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Reference-ID: Bugzilla 133209 Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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James Smart authored
[ Upstream commit 4360ca9c ] Fix external loopback failure. Rx sequence reassembly was incorrect. Signed-off-by:
Dick Kennedy <dick.kennedy@avagotech.com> Signed-off-by:
James Smart <james.smart@avagotech.com> Reviewed-by:
Hannes Reinicke <hare@suse.de> Signed-off-by:
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James Smart authored
[ Upstream commit 01c73bbc ] Fix mbox reuse in PLOGI completion. Moved allocations so that buffer properly init'd. Signed-off-by:
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James Smart authored
[ Upstream commit 81e75177 ] Fix RDP Speed reporting. Signed-off-by:
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James Smart authored
[ Upstream commit c90261dc ] Fix crash in fcp command completion path. Missed null check. Signed-off-by:
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James Smart authored
[ Upstream commit 6690e0d4 ] Fix driver crash when module parameter lpfc_fcp_io_channel set to 16 Signed-off-by:
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James Smart authored
[ Upstream commit 4b7789b7 ] Fix RegLogin failed error seen on Lancer FC during port bounce Fix the statemachine and ref counting. Signed-off-by:
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James Smart authored
[ Upstream commit d6de08cc ] Fix the FLOGI discovery logic to comply with T11 standards We weren't properly setting fabric parameters, such as R_A_TOV and E_D_TOV, when we registered the vfi object in default configs and pt2pt configs. Revise to now pass service params with the values to the firmware and ensure they are reset on link bounce. Required reworking the call sequence in the discovery threads. Signed-off-by:
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James Smart authored
[ Upstream commit f5cb5304 ] Fix FCF Infinite loop in lpfc_sli4_fcf_rr_next_index_get. Signed-off-by:
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Uma Krishnan authored
[ Upstream commit 68adb7bf ] Add support for future IBM Coherent Accelerator (CXL) device with ID of 0x0601. Signed-off-by:
Uma Krishnan <ukrishn@linux.vnet.ibm.com> Reviewed-by:
Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
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Brian Norris authored
[ Upstream commit aa095455 ] GCC 4.6.3 does not support -Wno-unused-const-variable. Instead, use the kbuild infrastructure that checks if this options exists. Fixes: 2cd55c68 ("cxl: Fix build failure due to -Wunused-variable behaviour change") Suggested-by:
Michal Marek <mmarek@suse.com> Suggested-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Brian Norris <computersforpeace@gmail.com> Signed-off-by:
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Manoj Kumar authored
[ Upstream commit a2746fb1 ] This drop enables a future card with a device id of 0x0600 to be recognized by the cxlflash driver. As per the design, the Accelerator Function Unit (AFU) for this new IBM CXL Flash Adapter retains the same host interface as the previous generation. For the early prototypes of the new card, the driver with this change behaves exactly as the driver prior to this behaved with the earlier generation card. Therefore, no card specific programming has been added. These card specific changes can be staged in later if needed. Signed-off-by:
Manoj N. Kumar <manoj@linux.vnet.ibm.com> Acked-by:
Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by:
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Manoj Kumar authored
[ Upstream commit b45cdbaf ] If an async error interrupt is generated, and the error requires the FC link to be reset, it cannot be performed in the interrupt context. So a work element is scheduled to complete the link reset in a process context. If either an EEH event or an escalation occurs in between when the interrupt is generated and the scheduled work is started, the MMIO space may no longer be available. This will cause an oops in the worker thread. [ 606.806583] NIP kthread_data+0x28/0x40 [ 606.806633] LR wq_worker_sleeping+0x30/0x100 [ 606.806694] Call Trace: [ 606.806721] 0x50 (unreliable) [ 606.806796] wq_worker_sleeping+0x30/0x100 [ 606.806884] __schedule+0x69c/0x8a0 [ 606.806959] schedule+0x44/0xc0 [ 606.807034] do_exit+0x770/0xb90 [ 606.807109] die+0x300/0x460 [ 606.807185] bad_page_fault+0xd8/0x150 [ 606.807259] handle_page_fault+0x2c/0x30 [ 606.807338] wait_port_offline.constprop.12+0x60/0x130 [cxlflash] To prevent the problem space area from being unmapped, when there is pending work, a mapcount (using the kref mechanism) is held. The mapcount is released only when the work is completed. The last reference release is tied to the unmapping service. Signed-off-by:
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Manoj Kumar authored
[ Upstream commit ee91e332 ] After a few iterations of resetting the card, either during EEH recovery, or a host_reset the following is seen in the logs. cxlflash 0008:00: cxlflash_queuecommand: could not get a free command At every reset of the card, the commands that are outstanding are being leaked. No effort is being made to reap these commands. A few more resets later, the above error message floods the logs and the card is rendered totally unusable as no free commands are available. Iterated through the 'cmd' queue and printed out the 'free' counter and found that on each reset certain commands were in-use and stayed in-use through subsequent resets. To resolve this issue, when the card is reset, reap all the commands that are active/outstanding. Signed-off-by:
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Vaibhav Jain authored
[ Upstream commit 7b8ad495 ] Presently when a user-space process issues CXL_IOCTL_START_WORK ioctl we store the pid of the current task_struct and use it to get pointer to the mm_struct of the process, while processing page or segment faults from the capi card. However this causes issues when the thread that had originally issued the start-work ioctl exits in which case the stored pid is no more valid and the cxl driver is unable to handle faults as the mm_struct corresponding to process is no more accessible. This patch fixes this issue by using the mm_struct of the next alive task in the thread group. This is done by iterating over all the tasks in the thread group starting from thread group leader and calling get_task_mm on each one of them. When a valid mm_struct is obtained the pid of the associated task is stored in the context replacing the exiting one for handling future faults. The patch introduces a new function named get_mem_context that checks if the current task pointed to by ctx->pid is dead? If yes it performs the steps described above. Also a new variable cxl_context.glpid is introduced which stores the pid of the thread group leader associated with the context owning task. Reported-by:
Frank Haverkamp <HAVERKAM@de.ibm.com> Suggested-by:
Ian Munsie <imunsie@au1.ibm.com> Signed-off-by:
Vaibhav Jain <vaibhav@linux.vnet.ibm.com> Acked-by:
Frederic Barrat <fbarrat@linux.vnet.ibm.com> Reviewed-by:
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Vaibhav Jain authored
[ Upstream commit 1b5df59e ] An idr warning is reported when a context is release after the capi card is unbound from the cxl driver via sysfs. Below are the steps to reproduce: 1. Create multiple afu contexts in an user-space application using libcxl. 2. Unbind capi card from cxl using command of form echo <capi-card-pci-addr> > /sys/bus/pci/drivers/cxl-pci/unbind 3. Exit/kill the application owning afu contexts. After above steps a warning message is usually seen in the kernel logs of the form "idr_remove called for id=<context-id> which is not allocated." This is caused by the function cxl_release_afu which destroys the contexts_idr table. So when a context is release no entry for context pe is found in the contexts_idr table and idr code prints this warning. This patch fixes this issue by increasing & decreasing the ref-count on the afu device when a context is initialized or when its freed respectively. This prevents the afu from being released until all the afu contexts have been released. The patch introduces two new functions namely cxl_afu_get/put that manage the ref-count on the afu device. Also the patch removes code inside cxl_dev_context_init that increases ref on the afu device as its guaranteed to be alive during this function. Reported-by:
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Dexuan Cui authored
[ Upstream commit 34c6801e ] In the path vmbus_onoffer_rescind() -> vmbus_device_unregister() -> device_unregister() -> ... -> __device_release_driver(), we can see for a device without a driver loaded: dev->driver is NULL, so dev->bus->remove(dev), namely vmbus_remove(), isn't invoked. As a result, vmbus_remove() -> hv_process_channel_removal() isn't invoked and some cleanups(like sending a CHANNELMSG_RELID_RELEASED message to the host) aren't done. We can demo the issue this way: 1. rmmod hv_utils; 2. disable the Heartbeat Integration Service in Hyper-V Manager and lsvmbus shows the device disappears. 3. re-enable the Heartbeat in Hyper-V Manager and modprobe hv_utils, but lsvmbus shows the device can't appear again. This is because, the host thinks the VM hasn't released the relid, so can't re-offer the device to the VM. We can fix the issue by moving hv_process_channel_removal() from vmbus_close_internal() to vmbus_device_release(), since the latter is always invoked on device_unregister(), whether or not the dev has a driver loaded. Signed-off-by:
Dexuan Cui <decui@microsoft.com> Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
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Dexuan Cui authored
[ Upstream commit 63d55b2a ] process_chn_event(), running in the tasklet, can race with vmbus_close_internal() in the case of SMP guest, e.g., when the former is accessing channel->inbound.ring_buffer, the latter could be freeing the ring_buffer pages. To resolve the race, we can serialize them by disabling the tasklet when the latter is running here. Signed-off-by:
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Olaf Hering authored
[ Upstream commit ed9ba608 ] The Backup integration service on WS2012 has appearently trouble to negotiate with a guest which does not support the provided util version. Currently the VSS driver supports only version 5/0. A WS2012 offers only version 1/x and 3/x, and vmbus_prep_negotiate_resp correctly returns an empty icframe_vercnt/icmsg_vercnt. But the host ignores that and continues to send ICMSGTYPE_NEGOTIATE messages. The result are weird errors during boot and general misbehaviour. Check the Windows version to work around the host bug, skip hv_vss_init on WS2012 and older. Signed-off-by:
Olaf Hering <olaf@aepfle.de> Signed-off-by:
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Andrey Smetanin authored
[ Upstream commit 17efbee8 ] Before vmbus_connect() synic is setup per vcpu - this means hypervisor receives writes at synic msr's and probably allocate hypervisor resources per synic setup. If vmbus_connect() failed for some reason it's neccessary to cleanup synic setup by call hv_synic_cleanup() at each vcpu to get a chance to free allocated resources by hypervisor per synic. This patch does appropriate cleanup in case of vmbus_connect() failure. Signed-off-by:
Andrey Smetanin <asmetanin@virtuozzo.com> Signed-off-by:
Denis V. Lunev <den@openvz.org> Reviewed-by:
Vitaly Kuznetsov <vkuznets@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by:
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Olaf Hering authored
[ Upstream commit cdc0c0c9 ] Catch allocation errors in hvutil_transport_send. Fixes: 14b50f80 ('Drivers: hv: util: introduce hv_utils_transport abstraction') Signed-off-by:
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Olaf Hering authored
[ Upstream commit b4ed5d16 ] Currently some "Unspecified error 0x80004005" is reported on the Windows side if something fails. Handle the ENOSPC case and return ERROR_DISK_FULL, which allows at least Copy-VMFile to report a meaning full error. Signed-off-by:
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Olaf Hering authored
[ Upstream commit 3cace4a6 ] All channel interrupts are bound to specific VCPUs in the guest at the point channel is created. While currently, we invoke the polling function on the correct CPU (the CPU to which the channel is bound to) in some cases we may run the polling function in a non-interrupt context. This potentially can cause an issue as the polling function can be interrupted by the channel callback function. Fix the issue by running the polling function on the appropriate CPU at interrupt level. Additional details of the issue being addressed by this patch are given below: Currently hv_fcopy_onchannelcallback is called from interrupts and also via the ->write function of hv_utils. Since the used global variables to maintain state are not thread safe the state can get out of sync. This affects the variable state as well as the channel inbound buffer. As suggested by KY adjust hv_poll_channel to always run the given callback on the cpu which the channel is bound to. This avoids the need for locking because all the util services are single threaded and only one transaction is active at any given point in time. Additionally, remove the context variable, they will always be the same as recv_channel. Signed-off-by:
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K. Y. Srinivasan authored
[ Upstream commit c0b200cf ] Util services such as KVP and FCOPY need assistance from daemon's running in user space. Increase the timeout so we don't prematurely terminate the transaction in the kernel. Host sets up a 60 second timeout for all util driver transactions. The host will retry the transaction if it times out. Set the guest timeout at 30 seconds. Signed-off-by:
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Matias Bjørling authored
[ Upstream commit b5d4acd4 ] The get/set bad block interface defines good block, factory bad block, grown bad block, device reserved block, and host reserved block. Unfortunately the grown bad block was missing, leaving the offsets wrong for device and host side reserved blocks. This patch adds the missing type and corrects the offsets. Signed-off-by:
Matias Bjørling <m@bjorling.me> Signed-off-by:
Jens Axboe <axboe@fb.com> Signed-off-by:
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Wenwei Tao authored
[ Upstream commit b262924b ] This patch fix two issues in rrpc_lun_gc 1. prio_list is protected by rrpc_lun's lock not nvm_lun's, so acquire rlun's lock instead of lun's before operate on the list. 2. we delete block from prio_list before allocating gcb, but gcb allocation may fail, we end without putting it back to the list, this makes the block won't get reclaimed in the future. To solve this issue, delete block after gcb allocation. Signed-off-by:
Wenwei Tao <ww.tao0320@gmail.com> Signed-off-by:
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Wenwei Tao authored
[ Upstream commit c27278bd ] When rrpc_write_ppalist_rq and rrpc_read_ppalist_rq succeed, we setup rq correctly, but nvm_submit_io may afterward fail since it cannot allocate request or nvme_nvm_command, we return error but forget to cleanup the previous work. Signed-off-by:
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Javier Gonzalez authored
[ Upstream commit 3bfbc6ad ] The mempool allocation might fail. Make sure to return error when it does, instead of causing a kernel panic. Signed-off-by:
Javier Gonzalez <javier@cnexlabs.com> Signed-off-by:
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Chao Yu authored
[ Upstream commit bdded155 ] When initing bad block list in gennvm_block_bb, once we move bad block from free_list to bb_list, we should maintain both stat info nr_free_blocks and nr_bad_blocks. So this patch fixes to add missing operation related to nr_free_blocks. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
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Wenwei Tao authored
[ Upstream commit 3cd485b1 ] Put bio when submission fails, since we get it before submission. And return error when backend device driver doesn't provide a submit_io method, thus we can end IO properly. Signed-off-by:
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Dan Carpenter authored
[ Upstream commit e37390be ] The "> MAX_CONTEXT" should be ">= MAX_CONTEXT". Otherwise we go one step beyond the end of the cfg->ctx_tbl[] array. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Acked-by:
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Alexander Duyck authored
[ Upstream commit e00e23bc ] This patch addresses two issues. First is the fact that the fm10k_mbx_free_irq was assuming msix_entries was valid and that will not always be the case. As such we need to add a check for if it is NULL. Second is the fact that we weren't freeing the IRQ if the mailbox API returned an error on trying to connect. Signed-off-by:
Alexander Duyck <aduyck@mirantis.com> Reviewed-by:
Bruce Allan <bruce.w.allan@intel.com> Tested-by:
Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by:
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Alexander Duyck authored
[ Upstream commit 587731e6 ] If the q_vector allocation fails we should free the resources associated with the MSI-X vector table. Signed-off-by:
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Jacob Keller authored
[ Upstream commit 875328e4 ] The init_hw function may fail, and in the case of VFs, it might change the number of maximum queues available. Thus, for every flow which checks init_hw, we need to ensure that we clear the queue scheme before, and initialize it after. The fm10k_io_slot_reset path will end up triggering a reset so fm10k_reinit needs this change. The fm10k_io_error_detected and fm10k_io_resume also need to properly clear and reinitialize the queue scheme. Signed-off-by:
Jacob Keller <jacob.e.keller@intel.com> Reviewed-by:
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