Re: [PATCH v2 00/32] powerpc: Add MSI IRQ domains to PCI drivers

On Thu, 1 Jul 2021 15:27:18 +0200, Cédric Le Goater wrote:

This series adds support for MSI IRQ domains on top of the XICS (P8)
and XIVE (P9/P10) IRQ domains for the PowerNV (baremetal) and pSeries
(VM) platforms. It should simplify and improve IRQ affinity of PCI
MSIs under these PowerPC platforms, specially for drivers distributing
multiple RX/TX queues on the different CPUs of the system.

Data locality can still be improved with an interrupt controller node
per chip but this requires FW changes. It could be done under OPAL.

[...]

Patches 1-31 applied to powerpc/next.

[01/32] powerpc/pseries/pci: Introduce __find_pe_total_msi()
        https://git.kernel.org/powerpc/c/786e5b102a0007d81579822eac23cb5bfaa0b65f
[02/32] powerpc/pseries/pci: Introduce rtas_prepare_msi_irqs()
        https://git.kernel.org/powerpc/c/e81202007363bd694b711f307f02320b5f98edaa
[03/32] powerpc/xive: Add support for IRQ domain hierarchy
        https://git.kernel.org/powerpc/c/14be098c5387eb93b794f299f3c3e2ddf6038ec7
[04/32] powerpc/xive: Ease debugging of xive_irq_set_affinity()
        https://git.kernel.org/powerpc/c/6c2ab2a5d634d4e30445ee5d52d5d1469bf74aa2
[05/32] powerpc/pseries/pci: Add MSI domains
        https://git.kernel.org/powerpc/c/a5f3d2c17b07e69166b93209f34a5fb8271a6810
[06/32] powerpc/xive: Drop unmask of MSIs at startup
        https://git.kernel.org/powerpc/c/5690bcae186084a8544b1819f0d89399268bd0cf
[07/32] powerpc/xive: Remove irqd_is_started() check when setting the affinity
        https://git.kernel.org/powerpc/c/292145a6e598c1e6633b8f5f607706b46f552ab9
[08/32] powerpc/pseries/pci: Add a domain_free_irqs() handler
        https://git.kernel.org/powerpc/c/07817a578a7a79638537480b8847dc7a12f293c5
[09/32] powerpc/pseries/pci: Add a msi_free() handler to clear XIVE data
        https://git.kernel.org/powerpc/c/9a014f456881e947bf8cdd8c984a207097e6c096
[10/32] powerpc/pseries/pci: Add support of MSI domains to PHB hotplug
        https://git.kernel.org/powerpc/c/174db9e7f775ce06fc6949c9abbe758b3eb8171c
[11/32] powerpc/powernv/pci: Introduce __pnv_pci_ioda_msi_setup()
        https://git.kernel.org/powerpc/c/2c50d7e99e39eba92b93210e740f3f9e5a06ba54
[12/32] powerpc/powernv/pci: Add MSI domains
        https://git.kernel.org/powerpc/c/0fcfe2247e75070361af2b6845030cada92cdbf8
[13/32] KVM: PPC: Book3S HV: Use the new IRQ chip to detect passthrough interrupts
        https://git.kernel.org/powerpc/c/ba418a0278265ad65f2f9544e743b7dbff3b994b
[14/32] KVM: PPC: Book3S HV: XIVE: Change interface of passthrough interrupt routines
        https://git.kernel.org/powerpc/c/e5e78b15113a73d0294141d9796969fa7b10fa3c
[15/32] KVM: PPC: Book3S HV: XIVE: Fix mapping of passthrough interrupts
        https://git.kernel.org/powerpc/c/51be9e51a8000ffc6a33083ceca9da9303ed4dc5
[16/32] powerpc/xics: Remove ICS list
        https://git.kernel.org/powerpc/c/298f6f952885eeb1f25461f085c6c238bcd9fc5e
[17/32] powerpc/xics: Rename the map handler in a check handler
        https://git.kernel.org/powerpc/c/248af248a8f45461662fb633eca4adf24ae704ad
[18/32] powerpc/xics: Give a name to the default XICS IRQ domain
        https://git.kernel.org/powerpc/c/7d14f6c60b76fa7f3f89d81a95385576ca33b483
[19/32] powerpc/xics: Add debug logging to the set_irq_affinity handlers
        https://git.kernel.org/powerpc/c/53b34e8db73af98fa652641bf490384dc665d0f2
[20/32] powerpc/xics: Add support for IRQ domain hierarchy
        https://git.kernel.org/powerpc/c/e4f0aa3b4731430ad73fb4485e97f751c7500668
[21/32] powerpc/powernv/pci: Customize the MSI EOI handler to support PHB3
        https://git.kernel.org/powerpc/c/bbb25af8fbdba4acaf955e412a84eb2eea48697c
[22/32] powerpc/pci: Drop XIVE restriction on MSI domains
        https://git.kernel.org/powerpc/c/679e30b9536eeb93bc8c9a39c0ddc77dec536f6b
[23/32] powerpc/xics: Drop unmask of MSIs at startup
        https://git.kernel.org/powerpc/c/1e661f81a522eadfe4bc5bb1ec9fbae27c13f163
[24/32] powerpc/pseries/pci: Drop unused MSI code
        https://git.kernel.org/powerpc/c/3005123eea0daa18d98602ab64b2ce3ad087d849
[25/32] powerpc/powernv/pci: Drop unused MSI code
        https://git.kernel.org/powerpc/c/6d9ba6121b1cf453985d08c141970a1b44cd9cf1
[26/32] powerpc/powernv/pci: Adapt is_pnv_opal_msi() to detect passthrough interrupt
        https://git.kernel.org/powerpc/c/f1a377f86f51b381cfc30bf2270f8a5f81e35ee9
[27/32] powerpc/xics: Fix IRQ migration
        https://git.kernel.org/powerpc/c/c80198a21792ac59412871e4e6fad5041c9be8e4
[28/32] powerpc/powernv/pci: Set the IRQ chip data for P8/CXL devices
        https://git.kernel.org/powerpc/c/5cd69651ceeed15e021cf7d19f1b1be0a80c0c7a
[29/32] powerpc/powernv/pci: Rework pnv_opal_pci_msi_eoi()
        https://git.kernel.org/powerpc/c/c325712b5f85e561ea89bae2ba5d0104e797e42c
[30/32] KVM: PPC: Book3S HV: XICS: Fix mapping of passthrough interrupts
        https://git.kernel.org/powerpc/c/1753081f2d445f9157550692fcc4221cd3ff0958
[31/32] powerpc/xive: Use XIVE domain under xmon and debugfs
        https://git.kernel.org/powerpc/c/59b2bc18b1492b46d45b6b6828ba098f09b9ba67

cheers