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From: "Ard Biesheuvel" <ardb@kernel.org>
Date: Tue, 31 Aug 2021 12:23:32 +0200
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Subject: Re: [edk2-devel] [PATCH 00/17] [RFC] OvmfPkg: Add support for microvm machine type
To: devel@edk2.groups.io, kraxel@redhat.com
Cc: =?UTF-8?B?TWFyYy1BbmRyw6kgTHVyZWF1?= <marcandre.lureau@redhat.com>, 
	Anthony Perard <anthony.perard@citrix.com>, Ard Biesheuvel <ardb+tianocore@kernel.org>, 
	Jiewen Yao <jiewen.yao@intel.com>, Jordan Justen <jordan.l.justen@intel.com>, 
	Julien Grall <julien@xen.org>, Stefan Berger <stefanb@linux.ibm.com>
Content-Type: text/plain; charset="UTF-8"

Hi Gerd,

On Tue, 31 Aug 2021 at 11:57, Gerd Hoffmann <kraxel@redhat.com> wrote:
>
> This patch series adds basic support for the
> microvm machine type to OVMF.
>

Can you provide a bit more background on this machine type, and on why
we'd want to support this? Does it have any relation to confidential
computing?


> Working:
>   - uefi shell @ serial console.
>   - direct kernel boot.
>
> Comming in followup patches:
>   - virtio-mmio support.
>   - pcie support.
>
> TODO:
>   - better timer support.
>
> Usage:
>   qemu-system-x86_64 -nographic -M microvm -bios MICROVM.fd ...
>
> Gerd Hoffmann (17):
>   OvmfPkg/Microvm: copy OvmfPkgX64 files as-is
>   OvmfPkg/Microvm: rename output files, fix includes
>   OvmfPkg/Microvm: no smm
>   OvmfPkg/Microvm: no secure boot
>   OvmfPkg/Microvm: no tpm
>   OvmfPkg/Microvm: no sev
>   OvmfPkg/Microvm: no csm
>   OvmfPkg/Microvm: no emulated scsi
>   OvmfPkg/Microvm: use MdePkg/Library/SecPeiDxeTimerLibCpu
>   OvmfPkg/Microvm: use XenTimerDxe (lapic timer)
>   OvmfPkg/Microvm: PlatformPei/MemDetect tweaks
>   OvmfPkg/Microvm: PlatformPei/Platform memory map tweaks
>   OvmfPkg/Microvm: PlatformPei/Platform misc tweaks
>   OvmfPkg/ResetSystemLib: add driver for microvm
>   OvmfPkg/Microvm: BdsPlatform: PciAcpiInitialization tweak.
>   OvmfPkg/Microvm: use PciHostBridgeLibNull
>   OvmfPkg/Microvm: wire up serial console, drop super-io
>
>  OvmfPkg/Microvm/MicrovmX64.dsc                | 838 ++++++++++++++++++
>  OvmfPkg/Microvm/MicrovmX64.fdf                | 462 ++++++++++
>  .../BaseResetSystemLibMicrovm.inf             |  37 +
>  .../DxeResetSystemLibMicrovm.inf              |  40 +
>  OvmfPkg/Include/IndustryStandard/Microvm.h    |  13 +
>  OvmfPkg/Include/OvmfPlatforms.h               |   1 +
>  .../PlatformBootManagerLib/BdsPlatform.c      |  42 +
>  .../ResetSystemLib/DxeResetSystemLibMicrovm.c |  49 +
>  .../ResetSystemLib/ResetSystemLibMicrovm.c    |  89 ++
>  OvmfPkg/PlatformPei/MemDetect.c               |   4 +
>  OvmfPkg/PlatformPei/Platform.c                |  14 +
>  OvmfPkg/Microvm/rebase-update.sh              |   6 +
>  12 files changed, 1595 insertions(+)
>  create mode 100644 OvmfPkg/Microvm/MicrovmX64.dsc
>  create mode 100644 OvmfPkg/Microvm/MicrovmX64.fdf
>  create mode 100644 OvmfPkg/Library/ResetSystemLib/BaseResetSystemLibMicrovm.inf
>  create mode 100644 OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
>  create mode 100644 OvmfPkg/Include/IndustryStandard/Microvm.h
>  create mode 100644 OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c
>  create mode 100644 OvmfPkg/Library/ResetSystemLib/ResetSystemLibMicrovm.c
>  create mode 100755 OvmfPkg/Microvm/rebase-update.sh
>
> --
> 2.31.1
>
>
>
> 
>
>