[SRU][P/N/J:linux-azure][PULL] Additional MANA patch support

John Cabaj john.cabaj at canonical.com
Mon Jul 14 19:36:30 UTC 2025


BugLink: https://bugs.launchpad.net/bugs/2115309
BugLink: https://bugs.launchpad.net/ubuntu/bugs/2115356

SRU Justification

[Impact]

* Microsoft requested MANA patches for the following:
     * Better spread IRQs per cpu
     * Allocate MSI-X vectors in PCI dynamically
     * Represent packets transmitted after GSO processing
     * Support holes in device list reply msg
     * Support multi vports on bare-metal
     * Action on receiving the special EQE notification

[Fix]

* Plucky:
     * 1 clean cherry-pick from upstream
     * 290e5d3c49f6: "net: mana: Add support for Multi Vports on Bare metal"
     * 5 clean cherry-picks from linux-next
     * 5da8a8b8090b: "PCI/MSI: Export pci_msix_prepare_desc() for 
dynamic MSI-X allocations"
     * ad518f2557b9: "PCI: hv: Allow dynamic MSI-X vector allocation"
     * 4607617af1b4: "net: mana: explain irq_setup() algorithm"
     * 845c62c543d6: "net: mana: Allow irq_setup() to skip cpus for 
affinity"
     * 7399ef984022: "net: mana: Set tx_packets to post gso processing 
packet count"
     * 2 backports from linux-next
     * 755391121038: "net: mana: Allocate MSI-X vectors dynamically"
     * 7768c5f41733: "net: mana: Add handler for hardware servicing events"

* Noble:
     * 6 clean cherry-picks from upstream
     * c1f5204efcbc: "cpumask: add cpumask_weight_andnot()"
     * dcee228078c3: "cpumask: define cleanup function for cpumasks"
     * 91bfe210e196: "net: mana: add a function to spread IRQs per CPUs"
     * 8afefc361209: "net: mana: Assigning IRQ affinity on HT cores"
     * 2fc8a346625e: "net: mana: Support holes in device list reply msg"
     * 290e5d3c49f6: "net: mana: Add support for Multi Vports on Bare metal"
     * 5 clean cherry-picks from linux-next
     * 5da8a8b8090b: "PCI/MSI: Export pci_msix_prepare_desc() for 
dynamic MSI-X allocations"
     * ad518f2557b9: "PCI: hv: Allow dynamic MSI-X vector allocation"
     * 845c62c543d6: "net: mana: explain irq_setup() algorithm"
     * 845c62c543d6: "net: mana: Allow irq_setup() to skip cpus for 
affinity"
     * 7399ef984022: "net: mana: Set tx_packets to post gso processing 
packet count"
     * 2 backports from linux-next
     * 755391121038: "net: mana: Allocate MSI-X vectors dynamically"
     * 7768c5f41733: "net: mana: Add handler for hardware servicing events"

* Jammy:
     * 2 clean cherry-picks from upstream
     * 2fc8a346625e: "net: mana: Support holes in device list reply msg"
     * 290e5d3c49f6: "net: mana: Add support for Multi Vports on Bare metal"
     * 2 clean cherry-picks from linux-next
     * 7399ef984022: "net: mana: Set tx_packets to post gso processing 
packet count"
     * 7768c5f41733: "net: mana: Add handler for hardware servicing events"

[Test Plan]

* Compile tested
* Microsoft tested

[Regression potential]

* Changes are largely localized to MANA and Hyper-V, and either already 
upstream or queued for upstream in the next merge window. Possible 
regressions could result in unexpected behavior of MANA driver.

[Other info]

* SF#00413058
* SF#00413050
* SF#00413245
* SF#00413047
* SF#00411917
* SF#00413476



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