linux-kernel - Re: [RFC PATCH 00/18] Microsoft Hypervisor root partition ioctl interface

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Message-ID: <20201124161859.wkbyppzirf7nwggt@liuwe-devbox-debian-v2>
Date:   Tue, 24 Nov 2020 16:18:59 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Nuno Das Neves <nunodasneves@...ux.microsoft.com>
Cc:     linux-hyperv@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, mikelley@...rosoft.com,
        viremana@...ux.microsoft.com, sunilmut@...rosoft.com,
        wei.liu@...nel.org, ligrassi@...rosoft.com, kys@...rosoft.com
Subject: Re: [RFC PATCH 00/18] Microsoft Hypervisor root partition ioctl
 interface

On Fri, Nov 20, 2020 at 04:30:19PM -0800, Nuno Das Neves wrote:
> This patch series provides a userspace interface for creating and running guest
> virtual machines while running on the Microsoft Hypervisor [0].
> 
> Since managing guest machines can only be done when Linux is the root partition,
> this series depends on the RFC already posted by Wei Liu:
> https://lore.kernel.org/linux-hyperv/20201105165814.29233-1-wei.liu@kernel.org/T/#t
> 
> The first two patches provide some helpers for converting hypervisor status
> codes to linux error codes, and easily printing hypervisor status codes to dmesg
> for debugging.
> 
> Hyper-V related headers asm-generic/hyperv-tlfs.h and x86/asm/hyperv-tlfs.h are
> split into uapi and non-uapi. The uapi versions contain structures used in both
> the ioctl interface and the kernel.
> 
> The mshv API is introduced in virt/mshv/mshv_main.c. As each interface is

Given this new file is placed under an arch-agnostic directory, please
make sure it doesn't break builds for other architecture. We can start
with running ARM builds for this series.

Wei.