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

[Cengiz Can]

On 23-05-31 11:39:24, Tim Gardner 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)
> 
> ----------------------------------------------------------------

- 9 Backports
- 12 cherry picks
- 2 Ubuntu SAUCE patches

Acked-by: Cengiz Can <cengiz.can at canonical.com>

> 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
> 
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