linux-kernel - Found an smp affinity issue during DDA of mpt3sas controllers on Hyperv 2016

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Message-ID: <CABxdwOxsf-3aBJawrnUyrhs02c9_gvwXx=SEj=dzjN68MKQmrQ@mail.gmail.com>
Date:   Sat, 14 Oct 2017 00:39:18 +0530
From:   bk rakesh <rakeshbkrish@...il.com>
To:     linux-kernel@...r.kernel.org
Subject: Found an smp affinity issue during DDA of mpt3sas controllers on
 Hyperv 2016

Hi,

I had found an issue during assigning mpt3sas controllers as DDA on
fedora-25 VM with kernel(4.11.x/4.14.0-rc4+) on microsoft Hyperv 2016.

Below is the logs after insmod of mpt3sas and pci-hyperv on
upstream(4.14.0-rc4+) kernel,
# dmesg
[   37.442924] hv_vmbus: registering driver hv_pci
[   37.445729] hv_pci 84e4a645-c888-42bd-baed-0c318f405004: PCI VMBus
probing: Using version 0x10002
[   37.491216] ACPI: \: failed to evaluate _DSM (0x1001)
[   37.492419] hv_pci 84e4a645-c888-42bd-baed-0c318f405004: PCI host
bridge to bus 6a05:00
[   37.493593] pci_bus 6a05:00: root bus resource [mem
0xfe0000000-0xfe004ffff window]
[   37.498918] pci 6a05:00:00.0: [1000:0097] type 00 class 0x010700
[   37.514280] pci 6a05:00:00.0: reg 0x14: [mem 0xfe0040000-0xfe004ffff 64bit]
[   37.517963] pci 6a05:00:00.0: reg 0x1c: [mem 0xfe0000000-0xfe003ffff 64bit]
[   37.539500] pci 6a05:00:00.0: supports D1 D2
[   37.546826] pci 6a05:00:00.0: BAR 3: assigned [mem
0xfe0000000-0xfe003ffff 64bit]
[   37.553840] pci 6a05:00:00.0: BAR 1: assigned [mem
0xfe0040000-0xfe004ffff 64bit]
[   50.432349] hv_balloon: Max. dynamic memory size: 6144 MB
[   63.544379] mpt3sas version 15.100.00.00 loaded
[   63.547088] mpt3sas 6a05:00:00.0: can't derive routing for PCI INT A
[   63.548274] mpt3sas 6a05:00:00.0: PCI INT A: no GSI
[   63.551308] mpt3sas_cm0: 64 BIT PCI BUS DMA ADDRESSING SUPPORTED,
total mem (6100208 kB)
[   63.612608] mpt3sas_cm0: MSI-X vectors supported: 96, no of cores:
8, max_msix_vectors: -1
[   63.618711] mpt3sas0-msix0: PCI-MSI-X enabled: IRQ 24
[   63.619867] mpt3sas0-msix1: PCI-MSI-X enabled: IRQ 25
[   63.620912] mpt3sas0-msix2: PCI-MSI-X enabled: IRQ 26
[   63.621971] mpt3sas0-msix3: PCI-MSI-X enabled: IRQ 27
[   63.623033] mpt3sas0-msix4: PCI-MSI-X enabled: IRQ 28
[   63.624468] mpt3sas0-msix5: PCI-MSI-X enabled: IRQ 29
[   63.625660] mpt3sas0-msix6: PCI-MSI-X enabled: IRQ 30
[   63.626844] mpt3sas0-msix7: PCI-MSI-X enabled: IRQ 31
[   63.627876] mpt3sas_cm0: iomem(0x0000000fe0040000),
mapped(0xffffa48881870000), size(65536)
[   63.628838] mpt3sas_cm0: ioport(0x0000000000000000), size(0)
[   63.769014] mpt3sas_cm0: Allocated physical memory: size(17854 kB)
[   63.770292] mpt3sas_cm0: Current Controller Queue Depth(11196),Max
Controller Queue Depth(11264)
[   63.771380] mpt3sas_cm0: Scatter Gather Elements per IO(128)
[   63.817884] mpt3sas_cm0: LSISAS3008: FWVersion(12.00.02.00),
ChipRevision(0x02), BiosVersion(08.29.02.00)
[   63.818869] mpt3sas_cm0: Protocol=(
[   63.818869] Initiator
[   63.819836] ,Target
[   63.820883] ),
[   63.821907] Capabilities=(
[   63.823080] TLR
[   63.824033] ,EEDP
[   63.824884] ,Snapshot Buffer
[   63.825765] ,Diag Trace Buffer
[   63.826568] ,Task Set Full
[   63.827485] ,NCQ
[   63.828251] )
[   63.829822] scsi host1: Fusion MPT SAS Host
[   63.831036] mpt3sas_cm0: sending port enable !!
[   63.832098] do_IRQ: 6.178 No irq handler for vector
[   63.832144] do_IRQ: 1.98 No irq handler for vector

Thanks,
Rakesh