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When Linux runs as the root partition on Microsoft Hypervisor, its
interrupts are remapped. Linux will need to explicitly map and unmap
interrupts for hardware.
Implement an MSI domain to issue the correct hypercalls. And initialize
this irq domain as the default MSI irq domain.
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-16-wei.liu@kernel.org
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Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-15-wei.liu@kernel.org
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We will need to identify the device we want Microsoft Hypervisor to
manipulate. Introduce the data structures for that purpose.
They will be used in a later patch.
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-14-wei.liu@kernel.org
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We will soon use the same structure to handle IO-APIC interrupts as
well. Introduce an enum to identify the source and a data structure for
IO-APIC RTE.
While at it, update pci-hyperv.c to use the enum.
No functional change.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-13-wei.liu@kernel.org
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We will soon need to access fields inside the MSI address and MSI data
fields. Introduce hv_msi_address_register and hv_msi_data_register.
Fix up one user of hv_msi_entry in mshyperv.h.
No functional change expected.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-12-wei.liu@kernel.org
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Microsoft Hypervisor requires the root partition to make a few
hypercalls to setup application processors before they can be used.
Signed-off-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Co-Developed-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-11-wei.liu@kernel.org
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They are used to deposit pages into Microsoft Hypervisor and bring up
logical and virtual processors.
Signed-off-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Co-Developed-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Co-Developed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-10-wei.liu@kernel.org
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There is already a stub function for pxm_to_node but conversion to the
other direction is missing.
It will be used by Microsoft Hypervisor code later.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20210203150435.27941-9-wei.liu@kernel.org
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When Linux is running as the root partition, the hypercall page will
have already been setup by Hyper-V. Copy the content over to the
allocated page.
Add checks to hv_suspend & co to bail early because they are not
supported in this setup yet.
Signed-off-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Co-Developed-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Co-Developed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-8-wei.liu@kernel.org
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We will need the partition ID for executing some hypercalls later.
Signed-off-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-7-wei.liu@kernel.org
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When Linux runs as the root partition, it will need to make hypercalls
which return data from the hypervisor.
Allocate pages for storing results when Linux runs as the root
partition.
Signed-off-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Co-Developed-by: Lillian Grassin-Drake <ligrassi@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-6-wei.liu@kernel.org
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When Linux runs as the root partition, the setup required for TSC page
is different. Luckily Linux also has access to the MSR based
clocksource. We can just disable the TSC page clocksource if Linux is
the root partition.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-5-wei.liu@kernel.org
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There is no VMBus and the other infrastructures initialized in
hv_acpi_init when Linux is running as the root partition.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-4-wei.liu@kernel.org
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For now we can use the privilege flag to check. Stash the value to be
used later.
Put in a bunch of defines for future use when we want to have more
fine-grained detection.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-3-wei.liu@kernel.org
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This makes the name match Hyper-V TLFS.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-2-wei.liu@kernel.org
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icmsg_negotiate
There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].
Refactor the code according to the use of a flexible-array member in
struct icmsg_negotiate, instead of a one-element array.
Also, this helps the ongoing efforts to enable -Warray-bounds and fix the
following warnings:
drivers/hv/channel_mgmt.c:315:23: warning: array subscript 1 is above array bounds of ‘struct ic_version[1]’ [-Warray-bounds]
drivers/hv/channel_mgmt.c:316:23: warning: array subscript 1 is above array bounds of ‘struct ic_version[1]’ [-Warray-bounds]
[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.9/process/deprecated.html#zero-length-and-one-element-arrays
Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/109
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210201174334.GA171933@embeddedor
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Restrict the NVSP protocol version(s) that will be negotiated with the
host to be NVSP_PROTOCOL_VERSION_61 or greater if the guest is running
isolated. Moreover, do not advertise the SR-IOV capability and ignore
NVSP_MSG_4_TYPE_SEND_VF_ASSOCIATION messages in isolated guests, which
are not supposed to support SR-IOV. This reduces the footprint of the
code that will be exercised by Confidential VMs and hence the exposure
to bugs and vulnerabilities.
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210201144814.2701-5-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Restrict the protocol version(s) that will be negotiated with the host
to be 5.2 or greater if the guest is running isolated. This reduces the
footprint of the code that will be exercised by Confidential VMs and
hence the exposure to bugs and vulnerabilities.
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210201144814.2701-4-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Only the VSCs or ICs that have been hardened and that are critical for
the successful adoption of Confidential VMs should be allowed if the
guest is running isolated. This change reduces the footprint of the
code that will be exercised by Confidential VMs and hence the exposure
to bugs and vulnerabilities.
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210201144814.2701-3-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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If bit 22 of Group B Features is set, the guest has access to the
Isolation Configuration CPUID leaf. On x86, the first four bits
of EAX in this leaf provide the isolation type of the partition;
we entail three isolation types: 'SNP' (hardware-based isolation),
'VBS' (software-based isolation), and 'NONE' (no isolation).
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: x86@kernel.org
Cc: linux-arch@vger.kernel.org
Link: https://lore.kernel.org/r/20210201144814.2701-2-parri.andrea@gmail.com
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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There is a spelling mistake in an error message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210127233136.623465-1-colin.king@canonical.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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When a Linux VM runs on Hyper-V, if the host toolstack doesn't support
hibernation for the VM (this happens on old Hyper-V hosts like Windows
Server 2016, or new Hyper-V hosts if the admin or user doesn't declare
the hibernation intent for the VM), the VM is discouraged from trying
hibernation (because the host doesn't guarantee that the VM's virtual
hardware configuration will remain exactly the same across hibernation),
i.e. the VM should not try to set up the swap partition/file for
hibernation, etc.
x86 Hyper-V uses the presence of the virtual ACPI S4 state as the
indication of the host toolstack support for a VM. Currently there is
no easy and reliable way for the userspace to detect the presence of
the state (see https://lkml.org/lkml/2020/12/11/1097). Add
/sys/bus/vmbus/hibernation for this purpose.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210107014552.14234-1-decui@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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The old implementation wasn't consistend on this.
But it looks like we depend on this so better bring it back.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reported-and-tested-by: Mike Galbraith <efault@gmx.de>
Fixes: d099fc8f540a ("drm/ttm: new TT backend allocation pool v3")
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210210160549.1462-1-christian.koenig@amd.com
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When the auxiliary device code is built into the kernel, it can be executed
before the auxiliary bus is registered. This causes bus->p to be not
allocated and triggers a NULL pointer dereference when the auxiliary bus
device gets added with bus_add_device(). Call the auxiliary_bus_init()
under driver_init() so the bus is initialized before devices.
Below is the kernel splat for the bug:
[ 1.948215] BUG: kernel NULL pointer dereference, address: 0000000000000060
[ 1.950670] #PF: supervisor read access in kernel mode
[ 1.950670] #PF: error_code(0x0000) - not-present page
[ 1.950670] PGD 0
[ 1.950670] Oops: 0000 1 SMP NOPTI
[ 1.950670] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.0-intel-nextsvmtest+ #2205
[ 1.950670] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 1.950670] RIP: 0010:bus_add_device+0x64/0x140
[ 1.950670] Code: 00 49 8b 75 20 48 89 df e8 59 a1 ff ff 41 89 c4 85 c0 75 7b 48 8b 53 50 48 85 d2 75 03 48 8b 13 49 8b 85 a0 00 00 00 48 89 de <48> 8
78 60 48 83 c7 18 e8 ef d9 a9 ff 41 89 c4 85 c0 75 45 48 8b
[ 1.950670] RSP: 0000:ff46032ac001baf8 EFLAGS: 00010246
[ 1.950670] RAX: 0000000000000000 RBX: ff4597f7414aa680 RCX: 0000000000000000
[ 1.950670] RDX: ff4597f74142bbc0 RSI: ff4597f7414aa680 RDI: ff4597f7414aa680
[ 1.950670] RBP: ff46032ac001bb10 R08: 0000000000000044 R09: 0000000000000228
[ 1.950670] R10: ff4597f741141b30 R11: ff4597f740182a90 R12: 0000000000000000
[ 1.950670] R13: ffffffffa5e936c0 R14: 0000000000000000 R15: 0000000000000000
[ 1.950670] FS: 0000000000000000(0000) GS:ff4597f7bba00000(0000) knlGS:0000000000000000
[ 1.950670] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.950670] CR2: 0000000000000060 CR3: 000000002140c001 CR4: 0000000000f71ef0
[ 1.950670] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1.950670] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
[ 1.950670] PKRU: 55555554
[ 1.950670] Call Trace:
[ 1.950670] device_add+0x3ee/0x850
[ 1.950670] __auxiliary_device_add+0x47/0x60
[ 1.950670] idxd_pci_probe+0xf77/0x1180
[ 1.950670] local_pci_probe+0x4a/0x90
[ 1.950670] pci_device_probe+0xff/0x1b0
[ 1.950670] really_probe+0x1cf/0x440
[ 1.950670] ? rdinit_setup+0x31/0x31
[ 1.950670] driver_probe_device+0xe8/0x150
[ 1.950670] device_driver_attach+0x58/0x60
[ 1.950670] __driver_attach+0x8f/0x150
[ 1.950670] ? device_driver_attach+0x60/0x60
[ 1.950670] ? device_driver_attach+0x60/0x60
[ 1.950670] bus_for_each_dev+0x79/0xc0
[ 1.950670] ? kmem_cache_alloc_trace+0x323/0x430
[ 1.950670] driver_attach+0x1e/0x20
[ 1.950670] bus_add_driver+0x154/0x1f0
[ 1.950670] driver_register+0x70/0xc0
[ 1.950670] __pci_register_driver+0x54/0x60
[ 1.950670] idxd_init_module+0xe2/0xfc
[ 1.950670] ? idma64_platform_driver_init+0x19/0x19
[ 1.950670] do_one_initcall+0x4a/0x1e0
[ 1.950670] kernel_init_freeable+0x1fc/0x25c
[ 1.950670] ? rest_init+0xba/0xba
[ 1.950670] kernel_init+0xe/0x116
[ 1.950670] ret_from_fork+0x1f/0x30
[ 1.950670] Modules linked in:
[ 1.950670] CR2: 0000000000000060
[ 1.950670] --[ end trace cd7d1b226d3ca901 ]--
Fixes: 7de3697e9cbd ("Add auxiliary bus support")
Reported-by: Jacob Pan <jacob.jun.pan@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20210210201611.1611074-1-dave.jiang@intel.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When commit 1852ebd13542 ("of: irq: make a stub for of_irq_parse_one()")
added a stub for of_irq_parse_one() it set the return value to 0. Return
value of 0 in this instance means the call succeeded and the out_irq
pointer was filled with valid data. So, fix it to return an error value.
Fixes: 1852ebd13542 ("of: irq: make a stub for of_irq_parse_one()")
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210210200050.4106032-1-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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write-zeros has a bio, but does not have any data buffers associated
with it. Hence should not initialize the request iter for it (which
attempts to reference the bi_io_vec (and crash).
--
run blktests nvme/012 at 2021-02-05 21:53:34
BUG: kernel NULL pointer dereference, address: 0000000000000008
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] SMP NOPTI
CPU: 15 PID: 12069 Comm: kworker/15:2H Tainted: G S I 5.11.0-rc6+ #1
Hardware name: Dell Inc. PowerEdge R640/06NR82, BIOS 2.10.0 11/12/2020
Workqueue: kblockd blk_mq_run_work_fn
RIP: 0010:nvme_tcp_init_iter+0x7d/0xd0 [nvme_tcp]
RSP: 0018:ffffbd084447bd18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffa0bba9f3ce80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000002000000
RBP: ffffa0ba8ac6fec0 R08: 0000000002000000 R09: 0000000000000000
R10: 0000000002800809 R11: 0000000000000000 R12: 0000000000000000
R13: ffffa0bba9f3cf90 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffffa0c9ff9c0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 00000001c9c6c005 CR4: 00000000007706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
nvme_tcp_queue_rq+0xef/0x330 [nvme_tcp]
blk_mq_dispatch_rq_list+0x11c/0x7c0
? blk_mq_flush_busy_ctxs+0xf6/0x110
__blk_mq_sched_dispatch_requests+0x12b/0x170
blk_mq_sched_dispatch_requests+0x30/0x60
__blk_mq_run_hw_queue+0x2b/0x60
process_one_work+0x1cb/0x360
? process_one_work+0x360/0x360
worker_thread+0x30/0x370
? process_one_work+0x360/0x360
kthread+0x116/0x130
? kthread_park+0x80/0x80
ret_from_fork+0x1f/0x30
--
Fixes: cb9b870fba3e ("nvme-tcp: fix wrong setting of request iov_iter")
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Tested-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Based on the comment block in this function and the FIXME for this, peer
being present for the offchannel tx is unlikely. Peer is deleted once tx
is complete. Change peer present msg to a warn to detect this condition.
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/3b1f71272d56ee1d7f567fbce13bdb56cc06d342.1612915444.git.skhan@linuxfoundation.org
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When trying to set the noise floor via debugfs, a "data bus error"
crash like the following can happen:
[ 88.433133] Data bus error, epc == 80221c28, ra == 83314e60
[ 88.438895] Oops[#1]:
[ 88.441246] CPU: 0 PID: 7263 Comm: sh Not tainted 4.14.195 #0
[ 88.447174] task: 838a1c20 task.stack: 82d5e000
[ 88.451847] $ 0 : 00000000 00000030 deadc0de 83141de4
[ 88.457248] $ 4 : b810a2c4 0000a2c4 83230fd4 00000000
[ 88.462652] $ 8 : 0000000a 00000000 00000001 00000000
[ 88.468055] $12 : 7f8ef318 00000000 00000000 77f802a0
[ 88.473457] $16 : 83230080 00000002 0000001b 83230080
[ 88.478861] $20 : 83a1c3f8 00841000 77f7adb0 ffffff92
[ 88.484263] $24 : 00000fa4 77edd860
[ 88.489665] $28 : 82d5e000 82d5fda8 00000000 83314e60
[ 88.495070] Hi : 00000000
[ 88.498044] Lo : 00000000
[ 88.501040] epc : 80221c28 ioread32+0x8/0x10
[ 88.505671] ra : 83314e60 ath9k_hw_loadnf+0x88/0x520 [ath9k_hw]
[ 88.512049] Status: 1000fc03 KERNEL EXL IE
[ 88.516369] Cause : 5080801c (ExcCode 07)
[ 88.520508] PrId : 00019374 (MIPS 24Kc)
[ 88.524556] Modules linked in: ath9k ath9k_common pppoe ppp_async l2tp_ppp cdc_mbim batman_adv ath9k_hw ath sr9700 smsc95xx sierra_net rndis_host qmi_wwan pppox ppp_generic pl2303 nf_conntrack_ipv6 mcs7830 mac80211 kalmia iptable_nat ipt_REJECT ipt_MASQUERADE huawei_cdc_ncm ftdi_sio dm9601 cfg80211 cdc_subset cdc_ncm cdc_ether cdc_eem ax88179_178a asix xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_ecn xt_dscp xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_NETMAP xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CLASSIFY usbserial usbnet usbhid slhc rtl8150 r8152 pegasus nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack
[ 88.597894] libcrc32c kaweth iptable_mangle iptable_filter ipt_ECN ipheth ip_tables hso hid_generic crc_ccitt compat cdc_wdm cdc_acm br_netfilter hid evdev input_core nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 l2tp_netlink l2tp_core udp_tunnel ip6_udp_tunnel xfrm6_mode_tunnel xfrm6_mode_transport xfrm6_mode_beet ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel xfrm4_mode_tunnel xfrm4_mode_transport xfrm4_mode_beet ipcomp esp4 ah4 tunnel6 tunnel4 tun xfrm_user xfrm_ipcomp af_key xfrm_algo sha256_generic sha1_generic jitterentropy_rng drbg md5 hmac echainiv des_generic deflate zlib_inflate zlib_deflate cbc authenc crypto_acompress ehci_platform ehci_hcd gpio_button_hotplug usbcore nls_base usb_common crc16 mii aead crypto_null cryptomgr crc32c_generic
[ 88.671671] crypto_hash
[ 88.674292] Process sh (pid: 7263, threadinfo=82d5e000, task=838a1c20, tls=77f81efc)
[ 88.682279] Stack : 00008060 00000008 00000200 00000000 00000000 00000000 00000000 00000002
[ 88.690916] 80500000 83230080 82d5fe22 00841000 77f7adb0 00000000 00000000 83156858
[ 88.699553] 00000000 8352fa00 83ad62b0 835302a8 00000000 300a00f8 00000003 82d5fe38
[ 88.708190] 82d5fef4 00000001 77f54dc4 77f80000 77f7adb0 c79fe901 00000000 00000000
[ 88.716828] 80510000 00000002 00841000 77f54dc4 77f80000 801ce4cc 0000000b 41824292
[ 88.725465] ...
[ 88.727994] Call Trace:
[ 88.730532] [<80221c28>] ioread32+0x8/0x10
[ 88.734765] Code: 00000000 8c820000 0000000f <03e00008> 00000000 08088708 00000000 aca40000 03e00008
[ 88.744846]
[ 88.746464] ---[ end trace db226b2de1b69b9e ]---
[ 88.753477] Kernel panic - not syncing: Fatal exception
[ 88.759981] Rebooting in 3 seconds..
The "REG_READ(ah, AR_PHY_AGC_CONTROL)" in ath9k_hw_loadnf() does not
like being called when the hardware is asleep, leading to this crash.
The easiest way to reproduce this is trying to set nf_override while
the hardware is down:
$ ip link set down dev wlan0
$ echo "-85" > /sys/kernel/debug/ieee80211/phy0/ath9k/nf_override
Fixing this crash by waking the hardware up before trying to set the
noise floor. Similar to what other ath9k debugfs files do.
Tested on a Lima board from 8devices, which has a QCA 4531 chipset.
Fixes: b90189759a7f ("ath9k: add noise floor override option")
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Linus Lüssing <ll@simonwunderlich.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210209184352.4272-1-linus.luessing@c0d3.blue
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After Commit 3499ba8198cad ("xen: Fix event channel callback via
INTX/GSI"), xenbus_probe() will be called too early on Arm. This will
recent to a guest hang during boot.
If the hang wasn't there, we would have ended up to call
xenbus_probe() twice (the second time is in xenbus_probe_initcall()).
We don't need to initialize xenbus_probe() early for Arm guest.
Therefore, the call in xen_guest_init() is now removed.
After this change, there is no more external caller for xenbus_probe().
So the function is turned to a static one. Interestingly there were two
prototypes for it.
Cc: stable@vger.kernel.org
Fixes: 3499ba8198cad ("xen: Fix event channel callback via INTX/GSI")
Reported-by: Ian Jackson <iwj@xenproject.org>
Signed-off-by: Julien Grall <jgrall@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/20210210170654.5377-1-julien@xen.org
Signed-off-by: Juergen Gross <jgross@suse.com>
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The SPR parameter set comprises OBSS PD threshold for SRG
and non SRG and Bitmap of BSS color and partial BSSID. This adds
support to configure fields of SPR element to firmware.
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.1.0.1-01238-QCAHKSWPL_SILICONZ-2
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1-01164-QCAHKSWPL_SILICONZ-1
Tested-by: Muna Sinada <msinada@codeaurora.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1612843714-29174-1-git-send-email-rmanohar@codeaurora.org
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ieee80211_report_used_skb of mac80211 use the frame_control of
ieee80211_hdr in sk_buff and indicate it to another function
ieee80211_mgd_conn_tx_status, then it queue work ieee80211_sta_work,
but ieee80211_is_auth(fc) in ieee80211_sta_work check fail when the
authentication has transmitted by ath10k.
When the ath10k report it with HTT_TX_COMPL_STATE_DISCARD, it will be
set without flag IEEE80211_TX_STAT_ACK, then mac80211 should try the
next authentication immeditely, but in fact mac80211 wait 1 second for
it, the reason is ieee80211_is_auth(fc) in ieee80211_sta_work check
fail for the sk_buff which is not restored, the data of sk_buff is not
the begin of ieee80211_hdr, in fact it is the begin of htt_cmd_hdr.
dmesg without this patch, it wait 1 second for the next retry when
ath10k report without IEEE80211_TX_STAT_ACK for authentication:
[ 6973.883116] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 1/3)
[ 6974.705471] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 2/3)
[ 6975.712962] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 3/3)
Restore the sk_buff make mac8011 retry the next authentication
immeditely which meet logic of mac80211.
dmesg with this patch, it retry the next immeditely when ath10k
report without IEEE80211_TX_STAT_ACK for authentication:
[ 216.734813] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 1/3)
[ 216.739914] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 2/3)
[ 216.745874] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 3/3)
Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1612839530-2263-1-git-send-email-wgong@codeaurora.org
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ac_classify() expects a struct sk_buff* as its second argument, which is
a member of struct tx_complete_data. priv happens to be a pointer to
struct tx_complete_data, so passing it directly to ac_classify() leads
to wrong behaviour and occasional panics.
Since there is only one caller of wilc_wlan_txq_add_net_pkt and it
already knows the type behind this pointer, and the structure is already
in the header file, change the function signature to use the real type
instead of void* in order to prevent confusion.
Signed-off-by: Vsevolod Kozlov <zaba@mm.st>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/YCQomJ1mO5BLxYOT@Vsevolods-Mini.lan
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s/configation/configuration/
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210209232921.1255425-1-unixbhaskar@gmail.com
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Commit 68ad28a4cdd4 ("KVM: PPC: Book3S HV: Fix radix guest SLB side
channel") incorrectly removed the radix host instruction patch to skip
re-loading the host SLB entries when exiting from a hash
guest. Restore it.
Fixes: 68ad28a4cdd4 ("KVM: PPC: Book3S HV: Fix radix guest SLB side channel")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Commit 68ad28a4cdd4 ("KVM: PPC: Book3S HV: Fix radix guest SLB side
channel") changed the older guest entry path, with the side effect
that vcpu->arch.slb_max no longer gets cleared for a radix guest.
This means that a HPT guest which loads some SLB entries, switches to
radix mode, runs the guest using the old guest entry path (e.g.,
because the indep_threads_mode module parameter has been set to
false), and then switches back to HPT mode would now see the old SLB
entries being present, whereas previously it would have seen no SLB
entries.
To avoid changing guest-visible behaviour, this adds a store
instruction to clear vcpu->arch.slb_max for a radix guest using the
old guest entry path.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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"GPL v2" is the same as "GPL". It exists for historic reasons.
See Documentation/process/license-rules.rst
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210122070634.12825-8-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Use no_pm versions for write and read.
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210122070634.12825-7-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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sdw_update_slave_status will be invoked when a codec is attached,
and the codec driver will initialize the codec with regmap functions
while the codec device is pm_runtime suspended.
regmap routines currently rely on regular SoundWire IO functions,
which will call pm_runtime_get_sync()/put_autosuspend.
This causes a deadlock where the resume routine waits for an
initialization complete signal that while the initialization complete
can only be reached when the resume completes.
The only solution if we allow regmap functions to be used in resume
operations as well as during codec initialization is to use _no_pm
routines. The duty of making sure the bus is operational needs to be
handled above the regmap level.
Fixes: 7c22ce6e21840 ('regmap: Add SoundWire bus support')
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210122070634.12825-6-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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acpi_walk_namespace can return success without executing our
callback which initializes info->handle.
If the random value in this structure is a valid address (which
is on the stack, so it's quite possible), then nothing bad will
happen, because:
sdw_intel_scan_controller
-> acpi_bus_get_device
-> acpi_get_device_data
-> acpi_get_data_full
-> acpi_ns_validate_handle
will reject this handle.
However, if the value from the stack doesn't point to a valid
address, we get this:
BUG: kernel NULL pointer dereference, address: 0000000000000050
PGD 0 P4D 0
Oops: 0000 [#1] SMP NOPTI
CPU: 6 PID: 472 Comm: systemd-udevd Tainted: G W 5.10.0-1-amd64 #1 Debian 5.10.4-1
Hardware name: HP HP Pavilion Laptop 15-cs3xxx/86E2, BIOS F.05 01/01/2020
RIP: 0010:acpi_ns_validate_handle+0x1a/0x23
Code: 00 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 1f 44 00 00 48 8d 57 ff 48 89 f8 48 83 fa fd 76 08 48 8b 05 0c b8 67 01 c3 <80> 7f 08 0f 74 02 31 c0 c3 0f 1f 44 00 00 48 8b 3d f6 b7 67 01 e8
RSP: 0000:ffffc388807c7b20 EFLAGS: 00010213
RAX: 0000000000000048 RBX: ffffc388807c7b70 RCX: 0000000000000000
RDX: 0000000000000047 RSI: 0000000000000246 RDI: 0000000000000048
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffc0f5f4d1 R11: ffffffff8f0cb268 R12: 0000000000001001
R13: ffffffff8e33b160 R14: 0000000000000048 R15: 0000000000000000
FS: 00007f24548288c0(0000) GS:ffff9f781fb80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000050 CR3: 0000000106158004 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
acpi_get_data_full+0x4d/0x92
acpi_bus_get_device+0x1f/0x40
sdw_intel_acpi_scan+0x59/0x230 [soundwire_intel]
? strstr+0x22/0x60
? dmi_matches+0x76/0xe0
snd_intel_dsp_driver_probe.cold+0xaf/0x163 [snd_intel_dspcfg]
azx_probe+0x7a/0x970 [snd_hda_intel]
local_pci_probe+0x42/0x80
? _cond_resched+0x16/0x40
pci_device_probe+0xfd/0x1b0
really_probe+0x205/0x460
driver_probe_device+0xe1/0x150
device_driver_attach+0xa1/0xb0
__driver_attach+0x8a/0x150
? device_driver_attach+0xb0/0xb0
? device_driver_attach+0xb0/0xb0
bus_for_each_dev+0x78/0xc0
bus_add_driver+0x12b/0x1e0
driver_register+0x8b/0xe0
? 0xffffffffc0f65000
do_one_initcall+0x44/0x1d0
? do_init_module+0x23/0x250
? kmem_cache_alloc_trace+0xf5/0x200
do_init_module+0x5c/0x250
__do_sys_finit_module+0xb1/0x110
do_syscall_64+0x33/0x80
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CC: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210208120104.204761-1-marcin.slusarz@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Fix to return negative error code -ENOMEM from the ioremap() error
handling case instead of 0, as done elsewhere in this function.
Fixes: 1958fc2f0712 ("net/mlx5: SF, Add auxiliary device driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Fix to return negative error code from the mlx5e_tc_tun_init() error
handling case instead of 0, as done elsewhere in this function.
This commit also using 0 instead of 'ret' when success since it is
always equal to 0.
Fixes: 8914add2c9e5 ("net/mlx5e: Handle FIB events to update tunnel endpoint device")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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The mlx5_chains_get_table() function doesn't return NULL, it returns
error pointers so we need to fix this condition.
Fixes: 34ca65352ddf ("net/mlx5: E-Switch, Indirect table infrastructure")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Commit 142d93d12dc1 ("net/mlx5: Add devlink subfunction port
documentation") refers to a section 'mlx5 port function' in the table of
contents, but includes a section 'mlx5 function attributes' instead.
Hence, make htmldocs warns:
mlx5.rst:16: WARNING: Unknown target name: "mlx5 port function".
Correct the section reference in table of contents to the actual name of
section in the documentation.
Also, tune another section underline while visiting this document.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Exclude contents of tc_tun.h header when CONFIG_MLX5_ESWITCH is disabled to
prevent compile-time errors when compiling with such config.
Fixes: 0d9f96471493 ("net/mlx5e: Extract tc tunnel encap/decap code to dedicated file")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Fix the following coccicheck warnings:
./drivers/net/ethernet/mellanox/mlx5/core/fs_core.c:575:2-14: WARNING:
Assignment of 0/1 to bool variable.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Zhong <abaci-bugfix@linux.alibaba.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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There is a spelling mistake in a netdev_warn message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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There is a spelling mistake in a netdev_warn message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Device list is not stored in mlx5_priv anymore, so delete it as it's not
used.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Remove including <generated/utsrelease.h> that don't need it.
Fixes: 17a7612b99e6 ("net/mlx5_core: Clean driver version and name")
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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There are some spelling mistakes in the Kconfig. Fix these.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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