ACK: [Pull Request][lunar/linux-azure] Azure: Add PCI pass-thru support to Hyper-V Confidential VMs

Wed May 31 19:45:22 UTC 2023

-- 

Acked-by: Philip Cox <philip.cox at canonical.com>

On Wed, May 31, 2023 at 1:40 PM Tim Gardner <tim.gardner at canonical.com>
wrote:

> SRU Justification
>
> [Impact]
>
> Microsoft has requested the inclusion of this patch set:
>
>
> https://lore.kernel.org/linux-hyperv/1679838727-87310-1-git-send-email-mikelley@microsoft.com/T/
>
> [Regression Potential]
>
> Private memory mappings could be incorrect.
>
> [Test Plan]
>
> Microsoft tested. This patch set is very similar to the set applied to
> k/azure.
>
> [Other Info]
>
> SF: #00355859
> All of the commits from Michael Kelly are headed upstream.
> All of the non-SAUCE patches from Dexuan Cui are also headed upstream.
> ---------------------------------------------------------------
>
> The following changes since commit
> 41a5cc0ba14f18ee2c2b34bd07643bedbb5e3fef:
>
>    UBUNTU: Ubuntu-azure-6.2.0-1004.4 (2023-04-14 16:57:48 +0200)
>
> are available in the Git repository at:
>
>
> git://git.launchpad.net/~timg-tpi/ubuntu/+source/linux-azure/+git/lunar
> lunar-azure-Add-PCI-pass-thru-to-cvm-lp2015369
>
> for you to fetch changes up to 3aec786a79d326dc940e78b76f37ad70fd2f5aaa:
>
>    arm64/hyperv: Use CPUHP_AP_HYPERV_ONLINE state to fix CPU online
> sequencing (2023-05-31 11:32:43 -0600)
>
> ----------------------------------------------------------------
> Dexuan Cui (5):
>        UBUNTU: SAUCE: Drivers: hv: vmbus: Revert Dexuan's changes to
> hv_ringbuffer_init()
>        UBUNTU: SAUCE: Drivers: hv: vmbus: Hardcode MMIO resources in
> vmbus_walk_resources() when necessary
>        UBUNTU: SAUCE: x86/hyperv: Support hypercalls for TDX guests (part
> 2)
>        Drivers: hv: vmbus: Remove the per-CPU post_msg_page
>        PCI: hv: Replace retarget_msi_interrupt_params with
> hyperv_pcpu_input_arg
>
> Jinank Jain (4):
>        x86/hyperv: Add support for detecting nested hypervisor
>        Drivers: hv: Setup synic registers in case of nested root partition
>        x86/hyperv: Add an interface to do nested hypercalls
>        Drivers: hv: Enable vmbus driver for nested root partition
>
> Michael Kelley (14):
>        x86/hyperv: Reorder code to facilitate future work
>        Drivers: hv: Explicitly request decrypted in vmap_pfn() calls
>        x86/mm: Handle decryption/re-encryption of bss_decrypted
> consistently
>        init: Call mem_encrypt_init() after Hyper-V hypercall init is done
>        x86/hyperv: Change vTOM handling to use standard coco mechanisms
>        swiotlb: Remove bounce buffer remapping for Hyper-V
>        Drivers: hv: vmbus: Remove second mapping of VMBus monitor pages
>        Drivers: hv: vmbus: Remove second way of mapping ring buffers
>        hv_netvsc: Remove second mapping of send and recv buffers
>        x86/hyperv: Block root partition functionality in a Confidential VM
>        Drivers: hv: Don't remap addresses that are above
> shared_gpa_boundary
>        PCI: hv: Enable PCI pass-thru devices in Confidential VMs
>        x86/hyperv: Fix hyperv_pcpu_input_arg handling when CPUs go
> online/offline
>        arm64/hyperv: Use CPUHP_AP_HYPERV_ONLINE state to fix CPU online
> sequencing
>
>   arch/arm64/hyperv/mshyperv.c        |   2 +-
>   arch/x86/coco/core.c                |  40 ++++++++++++++++++------
>   arch/x86/hyperv/hv_init.c           |  23 ++++----------
>   arch/x86/hyperv/ivm.c               | 153
>
> ++++++++++++++++++++++++++++++++++++++++++++++++++-----------------------------------------
>   arch/x86/include/asm/coco.h         |   1 -
>   arch/x86/include/asm/hyperv-tlfs.h  |  20 +++++++++++-
>   arch/x86/include/asm/mem_encrypt.h  |   1 +
>   arch/x86/include/asm/mshyperv.h     |  88
> ++++++++++++++++++++++++++++++++---------------------
>   arch/x86/kernel/cpu/mshyperv.c      | 110
> ++++++++++++++++++++++++++++++++++++++++++++++++++++--------------
>   arch/x86/mm/mem_encrypt_amd.c       |  10 ++++--
>   arch/x86/mm/pat/set_memory.c        |   3 --
>   drivers/hv/Kconfig                  |   2 +-
>   drivers/hv/channel_mgmt.c           |   2 +-
>   drivers/hv/connection.c             | 115
> +++++++++++++++++----------------------------------------------------
>   drivers/hv/hv.c                     |  76
> ++++++++++++++++++----------------------------
>   drivers/hv/hv_common.c              |  81
> ++++++++++++++++++++++++++-----------------------
>   drivers/hv/hyperv_vmbus.h           |   6 ----
>   drivers/hv/ring_buffer.c            |  66
> ++++++++++++----------------------------
>   drivers/hv/vmbus_drv.c              |  14 +++++++--
>   drivers/net/hyperv/hyperv_net.h     |   2 --
>   drivers/net/hyperv/netvsc.c         |  48 ++---------------------------
>   drivers/pci/controller/pci-hyperv.c | 280
>
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---------------------------------------------------------------
>   include/asm-generic/hyperv-tlfs.h   |  23 ++++++++++++++
>   include/asm-generic/mshyperv.h      |   5 +--
>   include/linux/cpuhotplug.h          |   1 +
>   include/linux/swiotlb.h             |   2 --
>   init/main.c                         |  19 +++++++-----
>   kernel/dma/swiotlb.c                |  47 +---------------------------
>   28 files changed, 641 insertions(+), 599 deletions(-)
>
> --
> -----------
> Tim Gardner
> Canonical, Inc
>
> --
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team
>
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